All Wiring Diagrams for Audi A4 2.0T 2012

AIR CONDITIONING

Automatic A/C Wiring Diagram, Basic (1 of 2) for Audi A4 2.0T 2012

List of elements for Automatic A/C Wiring Diagram, Basic (1 of 2) for Audi A4 2.0T 2012:

• (left side of center tunnel) g687
• 10a
• 3.0l
• A/c compressor regulator valve (rear of a/c compressor)
• A/c pressure/ temperature sensor (left side of condenser)
• Air flow door motor (left side of air intake housing)
• Brake light switch (top of brake pedal assembly)
• Center vent adjustment motor (right side of a/c unit)
• Center vent temperature sensor
• Climatronic control module
• Computer data lines system
• Coolant pump (if equipped)
• Defroster door motor (left side of a/c unit)
• Driver's side fuse panel (behind left end of dash)
• Engine coolant level (ecl) sensor
• Evaporator vent temperature sensor (in evaporator housing)
• Footwell door motor (left side of a/c unit)
• Footwell vent temperature sensor
• Fuse 10a
• Fuse 40a
• Fuse 5a
• Fuse carrier
• G638 (behind right kick panel)
• G639 (behind left kick panel)
• Hot at all times
• Outside air temperature sensor (behind front grille)
• Passenger's side fuse panel (behind right end of dash)
• Recirculation door motor (left side of air intake housing)
• Red
• Sunlight photo sensor (under center of dash)
• T16b
• T16i
• T17b
• T17i
• T17q
• T17r
• T20e
• T32b
• Temperature regulator door motor (lower left side of a/c unit)
• Vehicle electrical system control module (under left side of dash)

Automatic A/C Wiring Diagram, Basic (2 of 2) for Audi A4 2.0T 2012

List of elements for Automatic A/C Wiring Diagram, Basic (2 of 2) for Audi A4 2.0T 2012:

• 11a
• 2.ol
• 3.0l
• 400a
• 600w
• After run coolant pump (lower left side of engine)
• Auxiliary engine coolant (ec) pump relay (on vehicle electrical system control module relay/fuse carrier)
• Battery jump start terminal (middle of engine compt plenum chamber)
• Climatronic refrigerant shut-off valve (on refrigerant tube)
• Computer data lines system
• Coolant fan (400w & 600w) (behind radiators)
• Coolant fan (800w)
• Coolant fan (fc) control module (on coolant fan motors)
• Coolant fan (fc) control module 2 (800w) (on coolant fan motors)
• Coolant fan 2 (600w) (behind radiators)
• Coolant fan 2 (800w) (behind radiators)
• Engine control module (ecm) (except 3.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Engine coolant temperature (ect) sensor (lower left rear of engine)
• Fresh air blower (under right side of air intake housing)
• Fresh air blower control module (lower right side of air intake housing)
• Fuse 15a
• Fuse 40a
• Fuse 5a
• Fuse 60a 40a
• Fuse carrier 1
• Fuse panel b (in plenum chamber electronics box)
• G12 (left rear of engine compt)
• G685 (on right front long member)
• G687 (left side of center tunnel)
• Hot at all times
• Instrument cluster control module (behind instrument cluster)
• Nca
• Red
• T14f
• T17b
• T17q
• T32f
• T5l
• T60
• T94

Automatic A/C Wiring Diagram, Comfort (1 of 3) for Audi A4 2.0T 2012

List of elements for Automatic A/C Wiring Diagram, Comfort (1 of 3) for Audi A4 2.0T 2012:

• 10a
• 3.0l
• Air flow door motor (left side of air intake housing)
• Brake light switch (top of brake pedal assembly)
• Climatronic control module
• Computer data lines system
• Coolant recirculation pump (if equipped)
• Defroster door motor (left side of a/c unit)
• Fuse 10a
• Fuse 40a
• Fuse carrier
• G638 (behind right kick panel)
• G687 (left side of center tunnel)
• Hot at all times
• Instrument cluster control module (behind instrument cluster)
• Interior lights system
• Left center vent motor (upper left side of a/c unit)
• Left footwell door motor (left side of a/c unit)
• Left temperature door motor (left side of a/c unit)
• Passenger's side fuse panel (behind right end of dash)
• Rear temperature flap motor
• Rear temperature selection potentiometer (w/ additional lighting equipment)
• Recirculation door motor (left side of air intake housing)
• Red
• Right center vent motor (left side of air intake housing)
• Right footwell door motor
• Right temperature door motor (top left side of air intake housing)
• Sunlight photo sensor (under center of dash)
• T16i
• T17b
• T17d
• T20e
• T32f

Automatic A/C Wiring Diagram, Comfort (2 of 3) for Audi A4 2.0T 2012

List of elements for Automatic A/C Wiring Diagram, Comfort (2 of 3) for Audi A4 2.0T 2012:

• (behind front grille) outside air temperature sensor
• (bottom of hvac unit) air quality sensor
• A/c pressure/ temperature sensor (left side of condenser)
• Automatic dimming interior rearview mirror
• Computer data lines system
• Engine coolant level (ecl) sensor
• Evaporator vent temperature sensor (in evaporator housing)
• Fresh air blower (under right side of air intake housing)
• Fresh air blower control module (lower right side of air intake housing)
• Fuse 5a
• Fuse carrier
• Fuse panel c
• G639 (behind left kick panel)
• G687 (left side of center tunnel)
• Humidity sensor
• Left footwell temperature sensor (left side of a/c unit)
• Left front upper body vent temperature sensor
• Nca
• Right footwell temperature sensor (lower right side of a/c unit)
• Right front upper body vent temperature sensor
• T16b
• T17i
• T17r
• T32b
• T8c
• Vehicle electrical system control module (under left side of dash)

Automatic A/C Wiring Diagram, Comfort (3 of 3) for Audi A4 2.0T 2012

List of elements for Automatic A/C Wiring Diagram, Comfort (3 of 3) for Audi A4 2.0T 2012:

• 11a
• 2.ol
• 3.0l
• 400a
• 40a
• 600w
• A/c compressor regulator valve (rear of a/c compressor)
• After run coolant pump (lower left side of engine)
• Auxiliary engine coolant (ec) pump relay (on vehicle electrical system control module relay/fuse carrier)
• Battery jump start terminal (middle of engine compt plenum chamber)
• Climatronic refrigerant shut-off valve (on refrigerant tube)
• Computer data lines system
• Coolant fan (400w & 600w) (behind radiator)
• Coolant fan (800w)
• Coolant fan (fc) control module (on coolant fan motors)
• Coolant fan (fc) control module 2 (800w) (on coolant fan motors)
• Coolant fan 2 (600w) (behind radiator)
• Coolant fan 2 (800w) (behind radiator)
• Engine control module (ecm) (except 3.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Engine coolant temperature (ect) sensor (lower left rear of engine)
• Fuse 15a
• Fuse 40a
• Fuse 5a
• Fuse 60a
• Fuse carrier 1
• Fuse panel b (in plenum chamber electronics box)
• G12 (left rear of engine compt)
• G685 (on right front long member)
• Hot at all times
• Nca
• Red
• T14f
• T17b
• T17q
• T5l
• T60
• T94

ANTI-LOCK BRAKES

Anti-lock Brakes Wiring Diagram (1 of 2) for Audi A4 2.0T 2012

List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Audi A4 2.0T 2012:

• (not used)
• 40a
• Abs control module (left side of engine compt)
• Abs control module fuse 1
• Abs hydraulic pump
• Abs hydraulic unit
• Asr/esp button
• Auto hold button
• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Driving dynamics regulation high pressure switch valve 1
• Driving dynamics regulation high pressure switch valve 2
• Driving dynamics regulation switch valve 1
• Driving dynamics regulation switch valve 2
• Fuse 10a
• Fuse 5a
• Fuse carrier
• G671 (on left front long member)
• Hot at all times
• Interior lights system
• Left front abs inlet valve
• Left front abs outlet valve
• Left front abs wheel speed sensor (left front wheel hub assembly)
• Left rear abs inlet valve
• Left rear abs outlet valve
• Left rear abs wheel speed sensor (left rear wheel hub assembly)
• Red
• Right front abs inlet valve
• Right front abs outlet valve
• Right front abs wheel speed sensor (right front wheel hub assembly)
• Right rear abs inlet valve
• Right rear abs outlet valve
• Right rear abs wheel speed sensor (right rear wheel hub assembly)
• T17c
• T17d
• T17e
• W/ navigation

Anti-lock Brakes Wiring Diagram (2 of 2) for Audi A4 2.0T 2012

List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Audi A4 2.0T 2012:

• (behind left kick panel) g639
• (on steering column, behind steering wheel) steering column electronic systems control module
• 10a
• 12a
• 15a
• 2.0l
• 3.0l
• Abs warning lamp
• Active steering control module (under driver's footwell carpet)
• Asr/esp control lamp
• Brake light switch (top of brakk pedal assembly)
• Climatronic control module
• Comfort system control module (right side of trunk)
• Computer data
• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Engine control module (ecm) (except 3.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Esp sensor unit (w/ awd) (under driver's seat)
• Esp sensor unit 2 (under driver's seat)
• Fuse 25a
• Fuse 5a
• Fuse carrier
• G687 (left side of center tunnel)
• Hot at all times
• Instrument cluster control module
• Lines system
• Nca
• Passenger's side fuse panel (behind right end of dash)
• Steering angle sensor (behind steering wheel)
• T10h
• T17e
• T17r
• T20e
• T32c
• T32d
• T5d
• T8g
• T94

ANTI-THEFT

Anti-theft Wiring Diagram (1 of 2) for Audi A4 2.0T 2012

List of elements for Anti-theft Wiring Diagram (1 of 2) for Audi A4 2.0T 2012:

• (4f2/4k7) left front exterior door handle touch sensor
• (4f2/4k7) right front exterior door handle touch sensor
• (behind left kick panel) g639
• (behind right kick panel) g638
• 12a
• Alarm horn (right rear of roof)
• Antenna amplifier 3 (sedan: left side of trunk) (avant: left side of cargo area)
• Anti-theft alarm system sensor (in front interior/ reading light assembly)
• Central locking & anti-theft alarm system antenna (sedan)
• Central locking & anti-theft alarm system antenna (wagon)
• Comfort system control module (right side of trunk)
• Computer data lines system
• Fuse 5a
• Fuse carrier 2
• Fuse carrier 3
• Fuse panel c
• Fuse panel d (lower right side of dash)
• G51 (right side of luggage compt)
• G639 (behind left kick panel)
• Hot at all times
• Interior access/ start authorization antenna 1 (under front of center console)
• Left access/start authorization antenna (4f2/4k7) (in left rear door)
• Luggage compartment access/start authorization antenna (left front of luggage compt)
• Nca
• T17o
• T27a
• T27b
• T27c
• T32c
• T32d
• T32e
• Tih
• W/ mmi
• W/o mmi
• Wagon

Anti-theft Wiring Diagram (2 of 2) for Audi A4 2.0T 2012

List of elements for Anti-theft Wiring Diagram (2 of 2) for Audi A4 2.0T 2012:

• (on shifter unit) (a/t) selector lever sensor system control module
• (right side of center tunnel) g688
• Access/start authorization button
• Access/start authorization switch
• Computer data lines system
• Driver's door control module (in driver's front door)
• Electronic steering column lock control module (on steering column)
• Engine hood contact switch
• G51 (right side of luggage compt)
• G639 (behind left kick panel)
• G654 (top of right "d" pillar)
• G687 (left side of center tunnel)
• G730 (base of right "c" pillar)
• Headlights system
• Horns system
• Interior lights system
• Interior monitoring switch & alaram switch deactivation switch
• Left rear exterior door control module (4f2/4k7)
• Rear lid lock/alaram/ central locking switch/ central locking system motor (integral to rear lid lock)
• Rear lid lock/alaram/ central locking switch/ rear lid central locking system motor (integral to rear lid lock)
• Right rear exterior door handle touch sensor (4f2/4k7)
• Sedan
• T17g
• T17m
• T20f
• T27b
• T27d
• T32b
• T32j
• Vehicle electrical system control module (under left side of dash)
• Wagon

BODY CONTROL MODULES

Comfort System Central Control Module Wiring Diagram for Audi A4 2.0T 2012

List of elements for Comfort System Central Control Module Wiring Diagram for Audi A4 2.0T 2012:

• 10a
• 11a
• Anti-lock brakes system
• Anti-theft system
• Anti-theft system & trunk, tailgate, fuel doors systems
• Anti-theft, trunk, tailgate, fuel doors & door locks systems
• Anti-theft, trunk, tailgate, fuel doors & door locks systems engine controls system
• Comfort system control module (right side of trunk)
• Computer data lines system
• Defogger system
• Door locks system
• Door locks system & anti-theft systems
• Engine controls system
• Exterior lights system
• Fuse 20a
• Fuse 30a
• Fuse carrier 2
• G51 (right side of luggage compt)
• Hot at all times
• Interior lights systems
• Nca
• Power distribution system
• Power tops & anti-theft systems
• Power windows system
• Relay/fuse panel f (right side of luggage compt)
• Shift interlock system
• T17o
• T17p
• T1h
• T32c
• T32d
• T32e
• Transmissions system
• Trunk, tailgate, fuel doors &
• Trunk, tailgate, fuel doors & defogger systems
• Trunk, tailgate, fuel doors system

Steering Column Electronic Systems Control Module Wiring Diagram for Audi A4 2.0T 2012

List of elements for Steering Column Electronic Systems Control Module Wiring Diagram for Audi A4 2.0T 2012:

• (in steering column) (w/ slip ring) air bag spiral return/slip ring
• 12a
• Air bag control module (below center console)
• Computer data lines system
• Cruise control switch
• Driver's air bag igniter
• Driver's air bag igniter 2
• Engine controls system
• Fuse 5a
• Fuse carrier 1
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G687 (left side of center tunnel)
• Hot at all times
• Ignition/ starter switch
• Left multi- function buttons
• Mode
• Multi-function steering wheel control module
• Nca
• Right multi-function buttons
• Signal horn activation
• Steering angle sensor (behind steering wheel)
• Steering column electronic systems control module (on steering column, behind steering wheel)
• Steering wheel control unit
• Steering wheel vibration motor (w/ lane assistance)
• T17x
• T4ac
• Tiptronic downshift button (if equipped)
• Tiptronic upshift button (if equipped)
• Turn signal switch
• W/ lane assistance
• W/ tiptronic
• Windshield wiper/ intermittent mode switch

Vehicle Electrical System Control Module Wiring Diagram for Audi A4 2.0T 2012

List of elements for Vehicle Electrical System Control Module Wiring Diagram for Audi A4 2.0T 2012:

• 10a
• 12a
• Air conditioning & seats systems
• Air conditioning system
• Anti-theft & transmissions systems
• Anti-theft system
• Computer data lines & air conditioning systems
• Computer data lines system
• Engine controls system
• Exterior lights system
• Fuse 20a
• Fuse 30a
• Fuse 35a
• Fuse 5a
• Fuse carrier 1
• Fuse carrier 2
• Fuse carrier 3
• Fuse panel c
• G639 (behind left kick panel)
• G688 (right side of center tunnel)
• Headlights system
• Horns system
• Hot at all times
• Instrument cluster system
• Interior lights system
• Navigation
• Navigation system
• Power distribution system
• Power windows system
• Seats system
• Shift interlock system
• Start/stop mode button & driving profile selection switch module
• System
• T16b
• T17c
• T17l
• T17m
• T17n
• T32a
• T32b
• T6f
• Transmissions system
• Vehicle electrical system control module (under left side of dash)
• Warning systems
• Wiper/washer system

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram (1 of 3) for Audi A4 2.0T 2012

List of elements for Computer Data Lines Wiring Diagram (1 of 3) for Audi A4 2.0T 2012:

• (left side of center tunnel) g687
• 11a
• Abs control module (left side of engine compt)
• Active steering control module (awd) (under driver's footwell carpet)
• Air bag control module (below center console)
• All wheel drive control module (in spare tire well)
• Automatic day/ night interior mirror
• Data bus on board diagnostic interface (behind right center of dash)
• Data link connector (under left side of dash)
• Direct shift gearbox (dsg) mechatronic (if equipped)
• Directional stabilization assistance control module (in automatic day/night interior mirror)
• Distance regulation control module (if equipped) (right side of front bumper)
• Engine control module (except 3.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Esp sensor unit (under driver's seat)
• Esp sensor unit 2 (if equipped) (under driver's seat)
• Fuse 10a
• Fuse 5a
• Fuse carrier 1
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G687 (left side of center tunnel)
• Generator & voltage regulator
• Hot at all times
• Lane change assistance control module (if equipped) (behind right side of rear bumper)
• Lane change assistance control module 2 (behind left side of rear bumper)
• Left headlamp assembly
• Level control system control module
• Multitronic
• Nca
• Right headlamp assembly
• Sound systems
• Structure borne sound control module
• T10h
• T16b
• T16v
• T17b
• T17c
• T17e
• T17f
• T17r
• T20d
• T2dl
• T94
• Trans- mission control module (in mecha- tronic unit)
• Vehicle electrical system control module (under left side of dash)
• Voltage stabilizer (w/ engine start/ stop system) (in spare tire well)
• W/ directional stabilization assistance
• W/o direct shift gear box

Computer Data Lines Wiring Diagram (2 of 3) for Audi A4 2.0T 2012

List of elements for Computer Data Lines Wiring Diagram (2 of 3) for Audi A4 2.0T 2012:

• (behind center of front grille) garage door opener control module
• (bottom of hvac unit) (comfort) air quality sensor
• (center front of roof) (sedan) power sunroof control module
• (center front of roof) (wagon) power sunroof control module
• (in automatic day/night interior mirror) (if equipped) humidity sensor
• (in front interior/reading light assembly) anti-theft alarm system sensor
• (integral to sunroof blind motor assembly) (wagon) roof blind control module
• (left side of condenser)
• 10h
• 10l
• 11h
• 11l
• 15h
• 15l
• 16h
• 16l
• 17h
• 17l
• A/c pressure/ temperature sensor
• Digital sound system control module (wagon: left rear of cargo area) (sedan: left rear of trunk)
• Driver's door control module (in driver's front door)
• Driver's side can separating plug
• Garage door opener control head
• Left front seat ventilation control module (under driver's seat cushion)
• Memory seat/ steering column adjustment control module (w/ power memory seats)
• Power steering control module
• Premium
• Right front seat ventilation control module (under front passenger's seat cushion)
• Standard
• T10p
• T16b
• T16i
• T17b
• T17c
• T17r
• T18b
• T20f
• T27a
• T32g
• T32h
• T6e
• T6h
• T6k
• Telephone transceiver (under front passenger's seat)
• Transmission control module (in mechatronic unit)
• Tv tuner (left side of trunk)
• Vehicle electrical system control module (under left side of dash)
• W/ mmi high

Computer Data Lines Wiring Diagram (3 of 3) for Audi A4 2.0T 2012

List of elements for Computer Data Lines Wiring Diagram (3 of 3) for Audi A4 2.0T 2012:

• (avant) rear lid control module
• (if equipped) vehicle positioning system interface control module
• (not used) 12 pin connector
• (on steering column) electronic steering column lock control module
• (right side of trunk) (if equipped) rear view camera system control module
• (right side of trunk) (w/ tailor socket) towing recognition control module
• (right side of trunk) comfort system central control module
• (right side of trunk) electro-mechanical parking brake control module
• 10h
• 10l
• 11h
• 11l
• 12h
• 12l
• 15h
• 15l
• 16h
• 16l
• 17h
• 17l
• 18h
• 18l
• Access/start authorization switch
• Climatronic control module
• External audio source connection
• Front passenger's door control module (in front passenger's front door)
• Instrument cluster control module
• Passenger's side can separating plug
• Radio
• Steering column electronic systems control module (on steering column, behind steering wheel)
• T10ag
• T12u
• T16i
• T17f
• T17g
• T20e
• T20g
• T27c
• T32c
• T8m
• Tire pressure monitoring control module (behind right side of dash)
• W/ mmi 2 generator
• W/ mmi 3 generator

COOLING FAN

Cooling Fan Wiring Diagram for Audi A4 2.0T 2012

List of elements for Cooling Fan Wiring Diagram for Audi A4 2.0T 2012:

• 11a
• 2.ol
• 3.0l
• 400a
• 600w
• After run coolant pump (lower left side of engine)
• Auxiliary engine coolant (ec) pump relay (on vehicle electrical system control module relay/fuse carrier)
• Battery jump start terminal (middle of engine compt plenum chamber)
• Computer data lines system
• Coolant fan (400w & 600w) (behind radiator)
• Coolant fan (800w)
• Coolant fan (fc) control module (on coolant fan motors)
• Coolant fan (fc) control module 2 (800w) (on coolant fan motors)
• Coolant fan 2 (600w) (behind radiator)
• Coolant fan 2 (800w) (behind radiator)
• Engine control module (ecm) (except 3.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Engine coolant level (ecl) sensor
• Engine coolant temperature (ect) sensor (lower left rear of engine)
• Fuse 15a
• Fuse 40a
• Fuse 5a
• Fuse 60a 40a
• Fuse carrier 1
• Fuse panel b (in plenum chamber electronics box)
• G12 (left rear of engine compt)
• G685 (on right front long member)
• Hot at all times
• Nca
• Red
• T14f
• T16b
• T32b
• T5l
• T60
• T94
• Vehicle electrical system control module (under left side of dash)

CRUISE CONTROL

Cruise Control Wiring Diagram for Audi A4 2.0T 2012

List of elements for Cruise Control Wiring Diagram for Audi A4 2.0T 2012:

• (in mechatronic unit) transmission control module (tcm)
• 12a
• 2.0l
• 3.0l
• 3.ol
• 6-speed a/t
• Accelerator pedal position sensor & accelerator pedal position sensor 2 (accelerator pedal position sensor 2: in accelerator module)
• Brake light switch (top of brake pedal assembly)
• Climatronic control module
• Clutch position sensor (m/t)
• Computer data lines system
• Control valve control module (rear of engine)
• Cruise control switch
• Cvt
• Direct shift gearbox (dsg) mechatronic
• Distance regulation control module (if equipped) (right side of front bumper)
• Driver's side fuse panel (behind left end of dash)
• Engine control module (ecm) (except 3.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Fuse 5a
• Fuse carrier
• G638 (behind right kick panel)
• G687 (left side of center tunnel)
• Hot at all times
• Nca
• Passenger's side fuse panel (behind right end of dash)
• Steering column electronic systems control module (on steering column, behind steering wheel)
• T11r
• T16f
• T16r
• T17b
• T17e
• T17q
• T17r
• T20e
• T60
• T94
• Throttle valve control module (2.0l: left side of intake manifold) (3.0l: on throttle valve housing)
• Transmission control module (tcm)
• W/ direct shift gear box
• W/o direct shift gear box

DEFOGGERS

Defoggers Wiring Diagram for Audi A4 2.0T 2012

List of elements for Defoggers Wiring Diagram for Audi A4 2.0T 2012:

• (behind left kick panel) g639
• (behind right kick panel) g638
• (in front passenger front door) front passenger door control module
• (on relay/ fuse panel f) rear window defogger relay
• 11a
• 40a
• Comfort system control module (right side of trunk)
• Computer data lines system
• Driver's door control module (in driver's front door)
• Driver's exterior mirror assembly
• Driver's heated exterior rearview mirror
• Fm frequency filter (in positive wire)
• Front passenger's exterior mirror assembly
• Front passenger's heated exterior rearview mirror
• Fuse 110a
• Fuse 20a
• Fuse 30a
• Fuse carrier
• Fuse panel a (on battery, in luggage compt)
• Fuse panel c
• G51 (right side of luggage compt)
• G654 (wagon) (top of right "d" pillar)
• G657 (sedan)
• Hot at all times
• Mirrors system
• Nca
• Power distribution system
• Rear window defogger
• Rear window defogger fuse
• Red
• Relay/fuse panel f (right side of luggage compt)
• T16m
• T16n
• T17o
• T20f
• T20g
• T27a
• T27c
• T32c
• Windshield antenna suppression filter

ELECTRONIC POWER STEERING

Electromechanical Power Steering Wiring Diagram for Audi A4 2.0T 2012

List of elements for Electromechanical Power Steering Wiring Diagram for Audi A4 2.0T 2012:

• 15a
• Column, behind
• Computer data lines system
• Fuse 110a
• Fuse 5a
• Fuse carrier
• Fuse panel b (in plenum chamber electronics)
• G12 (left rear of engine compt)
• G672
• Hot at all times
• N/a
• Nca
• Power steering control module
• Steering angle sensor (behind steering wheel)
• Steering column electronic systems control module (on steering
• Steering torque sensor
• Steering torque sensor 2
• Steering wheel)
• T16f
• T2n
• T6h
• T6i
• Terminal 30 wire junction (middle of engine compt plenum chamber)

Power Steering Column Wiring Diagram for Audi A4 2.0T 2012

List of elements for Power Steering Column Wiring Diagram for Audi A4 2.0T 2012:

• 12a
• Air bag spiral return/ slip ring (in steering column)
• Computer data lines system
• Driver's air bag igniter
• Driver's air bag igniter 2
• Fuse 5a
• Fuse carrier
• Fuse panel d (lower right side of dash)
• G687 (left side of center tunnel)
• Hot at all times
• Left multi- function buttons
• Mode
• Multi-function steering wheel control module
• Nca
• Right multi-function buttons
• Signal horn activation
• Steering angle sensor (behind steering wheel)
• Steering column electronic systems control module (on steering column, behind steering wheel)
• Steering wheel control unit
• Steering wheel vibration motor (w/ lane assist)
• T16f
• Tiptronic downshift button (if equipped)
• Tiptronic upshift button (if equipped)
• W/ lane assist
• W/ tiptronic

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for Audi A4 2.0T 2012

List of elements for Electronic Suspension Wiring Diagram for Audi A4 2.0T 2012:

• Active steering control module (under driver's footwell carpet)
• Computer data
• Computer data lines system
• Energized
• Fuse 15a
• Fuse 35a
• Fuse 5a
• Fuse carrier 1
• Fuse carrier 2
• Fuse carrier 3
• Fuse panel c
• Fuse panel f (right side of luggage compt)
• G51 (right side of luggage compt)
• Hot at all times
• Left front damping adjustment valve (on left front suspension strut assembly)
• Left rear damping adjustment valve (on left rear shock absorber assembly)
• Level control system control module
• Lines system
• Nca
• Red
• Right front damping adjustment valve (on right front suspension strut assembly)
• Right rear damping adjustment valve (on right rear shock absorber assembly)
• T10h
• T15
• T17b
• T17e
• T18
• T5d
• T8g

ENGINE PERFORMANCE

2.0L TURBO

2.0L Turbo, Engine Performance Wiring Diagram (1 of 6) for Audi A4 2.0T 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (1 of 6) for Audi A4 2.0T 2012:

• (left rear of engine compt) g12
• (right side of trunk) comfort system control module
• Accelerator pedal position sensor & accelerator pedal position sensor 2 (accelerator pedal position sensor 2: in in accelerator module)
• Cooling fans system
• Cruise control system
• Engine control module (ecm) (left side of engine compt plenum chamber)
• Exterior lights system
• Fuse 15a
• Fuse 20a
• Fuse 5a
• Fuse carrier 1
• G12 (left rear of engine compt)
• Nca
• Oil level thermal sensor
• Oxygen sensor (o2s) after 3-way catalytic converter (twc) & oxygen sensor 1 (o2s) after catalytic converter (twc) heater (downstream of catalytic converter)
• Red
• Relay/fuse panel b (in plenum chamber electronics box)
• Starting/ charging system
• System
• T17e
• T17q
• T17r
• T32d
• T94
• Transmissions
• Transmissions system

2.0L Turbo, Engine Performance Wiring Diagram (2 of 6) for Audi A4 2.0T 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (2 of 6) for Audi A4 2.0T 2012:

• 10a
• Coil 1
• Coil 2
• Coil 3
• Coil 4
• Fuse 10a
• Fuse 110a
• Fuse 15a
• Fuse carrier 1
• Fuse panel a (on battery, in luggage compt)
• G12 (left rear of engine compt)
• G15
• Hot at all times
• Ignition coils 1, 2, 3 & 4 w/ power output stage (above 1, 2, 3 & 4 cylinders)
• Nca
• Red
• Reduced oil pressure switch
• Relay/ fuse panel b (in plenum chamber electronics box)
• T17q
• To spark plug

2.0L Turbo, Engine Performance Wiring Diagram (3 of 6) for Audi A4 2.0T 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (3 of 6) for Audi A4 2.0T 2012:

• (top of brake pedal assembly) brake light switch
• (top of fuel tank) fuel pump (fp) control module
• (top right side of engine)
• Auxiliary engine coolant pump relay (on vehicle electrical system control module relay/ fuse carrier)
• Cam adjustment actuator 1
• Cam adjustment actuator 2
• Cam adjustment actuator 3
• Cam adjustment actuator 4
• Cam adjustment actuator 5
• Cam adjustment actuator 6
• Cam adjustment actuator 7
• Cam adjustment actuator 8
• Computer data lines system
• Fuel level sensor & transfer pump (fp)
• Fuse 25a
• Fuse 5a
• Fuse carrier
• Fuse carrier 2
• Fuse panel c
• Fuse panel d (lower right side of dash )
• G687 (left side of center tunnel)
• G730 (base of right "c" pillar)
• Hot at all times
• Instrument cluster control module
• Speedometer
• T17e
• Tachometer

2.0L Turbo, Engine Performance Wiring Diagram (4 of 6) for Audi A4 2.0T 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (4 of 6) for Audi A4 2.0T 2012:

• (m/t) clutch position sensor
• (right side of trunk) electro mechanical parking brake control module
• (under left side of dash) vehicle electrical system control module
• 10a
• Camshaft adjustment valve 1 (lower front of engine)
• Climatronic control module
• Climatronic refrigerant shut-off valve (on refrigerant tube)
• Computer data lines system
• Engine coolant level (ecl) sensor
• Fuse 5a
• Fuse carrier
• Fuse panel c
• G639 (behind left kick panel)
• G687 (left side of center tunnel)
• Intake manifold runner control (imrc) valve (left side of engine)
• Leak detection pump (ldp)
• Left electro hydraulic engine mount solenoid valve (a/t) (left side of engine)
• Oil pressure regulation valve (lower left front of engine)
• Power distribution system
• T14f
• T16b
• T17b
• T17i
• T17q
• T20e
• T32b
• Turbocharger recirculating valve (right front of engine)
• Wastegate bypass regulator valve (right front of engine)

2.0L Turbo, Engine Performance Wiring Diagram (5 of 6) for Audi A4 2.0T 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (5 of 6) for Audi A4 2.0T 2012:

• (above 1, 2, 3 & 4 cylinders) fuel injectors 1,2,3 & 4
• (left front of engine compt) charge air pressure sensor
• (left side of engine, in intake manifold) intake manifold runner position sensor
• (left side of engine, on fuel line) fuel pressure sensor
• (left side of intake manifold) intake air temperature (iat) sensor
• (lower left rear of engine) engine coolant temperature (ect) sensor
• Engine control module (ecm) (left side of engine compt plenum chamber)
• Engine speed (rpm) sensor (lower left rear of engine)
• Evaporative emission (evap) canister purge regulator valve 1 (left rear of engine)
• Servotronic solenoid valve
• T14f
• T17q
• T60
• T8w

2.0L Turbo, Engine Performance Wiring Diagram (6 of 6) for Audi A4 2.0T 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (6 of 6) for Audi A4 2.0T 2012:

• (on air intake duct) mass air flow (maf) sensor
• (right rear of engine) fuel pressure regulator valve
• Camshaft position (cmp) sensor (top center of engine)
• Computer data lines system
• Engine control module (ecm) (left side of engine compt plenum chamber)
• Fuse 5a
• Fuse carrier 1
• Heated oxygen sensor (ho2s) & oxygen sensor (o2s) heater (in exhaust, at turbocharger exit)
• Hot at all times
• Knock sensor (ks) 1 (left side of cylinder head)
• Nca
• Relay/fuse panel b (in plenum chamber electronics box)
• Starting/charging system
• T14f
• T60
• T94
• Throttle valve control module (left side of intake manifold)

EXTERIOR LIGHTS

Backup Lamps Wiring Diagram for Audi A4 2.0T 2012

List of elements for Backup Lamps Wiring Diagram for Audi A4 2.0T 2012:

• 8 speed a/t
• Automatic day/ night interior mirror
• Backup lamp
• Comfort system control module (right side of trunk)
• Computer data lines system
• Cvt
• Direct shift gearbox (dsg) mechatronic
• Fuse 30a
• Fuse carrier
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G51 (w/o led rear lights) (right side of luggage compt) g50 (w/ led rear lights) (left side of luggage compt)
• G688 (right side of center tunnel)
• Hot at all times
• Left rear taillamp assembly 1
• Left rear taillamp assembly 2 (w/o led rear lights) left rear taillamp assembly 1 (w/ led rear lights)
• Relay/fuse panel f (right side of luggage compt)
• Right rear taillamp assembly 1
• Right rear taillamp assembly 2
• Sedan
• Selector lever sensor system control module (on shifter unit)
• T17o
• T17p
• T17q
• T32c
• Transmission control module (tcm)
• Transmission control module (tcm) (in mechatronic unit)
• Transmission park selector switch
• W/ direct shift gear box
• W/ led rear lights
• W/o direct shift gear box
• W/o led rear lights
• Wagon

Exterior Lamps Wiring Diagram, Sedan (1 of 3) for Audi A4 2.0T 2012

List of elements for Exterior Lamps Wiring Diagram, Sedan (1 of 3) for Audi A4 2.0T 2012:

• (left side of center tunnel) g687
• 12a
• 13a
• Computer data lines system
• Day time running lamp bulb
• Driver's side fuse panel (behind left end of dash)
• Electronic steering column lock control module (on steering column)
• Emergency flasher button
• Emergency flasher ind
• Fog lamp button
• Fuse 30a
• Fuse 5a
• Fuse carrier
• G638 (behind left kick panel)
• G639 (behind left kick panel)
• G687 (left side of center tunnel)
• Hot at all times
• Instrument cluster control module
• Instrument panel & illumination dimmer switch
• Interior lights system
• Left daytime running lamp & parking lamp control module
• Left front side marker lamp
• Left front turn signal lamp
• Left headlight assembly
• Light switch
• Nca
• Passenger's side fuse panel (behind right end of dash)
• Power output stage
• Rear fog lamp button
• Relay/fuse panel f (right side of luggage compt)
• Right daytime running lamp & parking lamp control module
• Right front side marker lamp
• Right front turn signal lamp
• Right headlight assembly
• T12e
• T16b
• T16f
• T17f
• T17m
• T17n
• T32a
• T4ad
• T4ae
• Turn signal switch
• Valet parking ind lamp
• Valet parking lock button
• Vehicle electrical system control module (under left side of dash)
• W/ hid
• W/o hid

Exterior Lamps Wiring Diagram, Sedan (2 of 3) for Audi A4 2.0T 2012

List of elements for Exterior Lamps Wiring Diagram, Sedan (2 of 3) for Audi A4 2.0T 2012:

• (right side of luggage compt)
• (right side of luggage compt) g51
• Back up
• Backup lamp
• Backup lamps circuit
• Brake/ turn signal lamp 2
• Brake/ turn/ taillamp
• Brake/turn signal/ tail lamp
• Comfort system control module (right side of trunk)
• Computer data lines system
• Fog lamp
• G51
• G51 (right side of luggage compt)
• G638 (behind right kick panel)
• G654 (top of right "d" pillar)
• Left rear taillamp assembly 2
• Right daytime
• Right front side marker lamp
• Right front turn signal lamp
• Right headlight assembly
• Right rear taillamp assembly 1
• Right tail lamp
• Running lamp
• Side marker lamp
• T17o
• T17p
• T32c
• T32d
• Tail lamp
• Turn signal lamp
• W/ hid
• W/ led rear lights
• W/o hid
• W/o led rear lights

Exterior Lamps Wiring Diagram, Sedan (3 of 3) for Audi A4 2.0T 2012

List of elements for Exterior Lamps Wiring Diagram, Sedan (3 of 3) for Audi A4 2.0T 2012:

• (left side of center tunnel) g687
• 2.0l
• 3.0l
• Assembly 2
• Backup lamp
• Backup lamps circuit
• Brake light switch (top of brake pedal assembly)
• Brake/ turn signal lamp 2
• Brake/ turn signal/ tail lamp
• Brake/ turn/ tail lamp
• Climatronic control module
• Clutch position sensor (m/t)
• Driver's side fuse panel (behind left end of dash)
• Engine control module (ecm) (2.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Fuse 5a
• Fuse carrier
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G639 (behind left kick panel)
• G690
• High-mount brake light
• Left license plate light
• Left rear taillamp assembly
• Left rear taillamp assembly 1
• Parking/ fog lamp
• Rear fog lamp
• Right license plate light
• Right rear taillamp
• Right rear taillamp assembly 2
• Side marker lamp
• T12u
• T17e
• T17r
• T20e
• T94
• Tail lamp
• Turn signal lamp
• Vehicle positioning system interface control module
• W/ led rear lights
• W/o led rear lights

Exterior Lamps Wiring Diagram, Wagon (1 of 3) for Audi A4 2.0T 2012

List of elements for Exterior Lamps Wiring Diagram, Wagon (1 of 3) for Audi A4 2.0T 2012:

• (left side of center tunnel) g687
• 12a
• 13a
• Computer data lines system
• Day time running lamp bulb
• Driver's side fuse panel (behind left end of dash)
• Electronic steering column lock control module (near steering column)
• Emergency flasher button
• Emergency flasher ind
• Fog lamp button
• Fuse 30a
• Fuse 5a
• Fuse carrier
• Fuse panel d (lower right side of dash)
• G638 (behind left kick panel)
• G639
• G687 (left side of center tunnel)
• Hot at all times
• Instrument cluster control module
• Instrument panel illumination dimmer switch
• Interior lights system
• Left daytime running lamp & parking lamp control module
• Left front side marker lamp
• Left front turn signal lamp
• Left headlight assembly
• Light switch
• Nca
• Power output stage
• Rear fog lamp button
• Relay/fuse panel f (right side of luggage compt)
• Right daytime running lamp & parking lamp control module
• Right front side marker lamp
• Right front turn signal lamp
• Right headlight assembly
• T12k
• T16b
• T16f
• T17f
• T17m
• T17n
• T32a
• T4ad
• T4ae
• Turn signal switch
• Valet parking ind lamp
• Valet parking lock button
• Vehicle electrical system control module (under left side of dash)
• W/ hid
• W/o hid

Exterior Lamps Wiring Diagram, Wagon (2 of 3) for Audi A4 2.0T 2012

List of elements for Exterior Lamps Wiring Diagram, Wagon (2 of 3) for Audi A4 2.0T 2012:

• Backup lamp
• Backup lamps circuit
• Brake lamp/ turn signal lamp
• Brake lamp/ turn signal lamp 2
• Brake/ turn signal 3
• Brake/ turn signal 4
• Brake/ turn signal/ tail lamp
• Comfort system control module (right side of trunk)
• Computer data lines system
• Fog lamp
• G51 (right side of luggage compt)
• G638 (behind right kick panel)
• G654 (top of right "d" pillar)
• Left rear taillamp assembly 2
• Right daytime
• Right front side marker lamp
• Right front turn signal lamp
• Right headlight assembly
• Right rear taillamp assembly 1
• Running lamp
• Side marker lamp
• T17o
• T17p
• T32c
• T32d
• Tail lamp
• Tail lamp 2
• Taillight lamp 2
• W/ hid
• W/ led rear lights
• W/o hid
• W/o led rear lights

Exterior Lamps Wiring Diagram, Wagon (3 of 3) for Audi A4 2.0T 2012

List of elements for Exterior Lamps Wiring Diagram, Wagon (3 of 3) for Audi A4 2.0T 2012:

• (left side of center tunnel) g687
• Backup lamp
• Backup lamps circuit
• Brake light switch (top of brake pedal assembly)
• Brake/ turn signal lamp
• Brake/ turn signal lamp 2
• Brake/ turn signal lamp 3
• Brake/ turn signal lamp 4
• Brake/ turn signal/ tail lamp
• Climatronic control module
• Clutch position sensor (m/t)
• Driver's side fuse panel (behind left end of dash)
• Engine control module (ecm) (left side of engine compt plenum chamber)
• Fuse 5a
• Fuse carrier
• G50 (left side of luggage compt)
• G639 (behind left kick panel)
• G654 (top of right "d" pillar)
• High-mount brake light
• Left license plate light
• Left rear taillamp assembly 1
• Rear fog lamp
• Right license plate light
• Right rear taillamp assembly 2
• Side marker lamp
• T17e
• T17r
• T20e
• T94
• Tail lamp
• Tail- lamp 2
• Taillight lamp 2
• Vehicle positioning system interface control module
• W/ led rear lights
• W/o led rear lights

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 3) for Audi A4 2.0T 2012

List of elements for Ground Distribution Wiring Diagram (1 of 3) for Audi A4 2.0T 2012:

• 12v socket, asr/esp button (w/o navigation), rear window shade switch, transmission park selector switch, parking aid button (w/o navigation), access/start authorization button (start/stop mode button), electro mechanical parking brake button, temperature control switch illumination bulb (optional equipment) driving profile selection switch module & telephone base plate
• Abs control module
• Battery monitoring control module
• Cigarette lighter illumination, telephone transceiver & telephone base plate
• Comfort system central control module shield & antenna amplifier 3 shield
• Coolant fan control module & coolant control module 2
• Diagnostic connector, light switch, chip card reader control module, access/start authorization switch, instrument cluster control module, steering column electronic systems control module, center instrument panel vent illumination bulb (if equipped), instrument panel illumination dimmer switch, left front footwell illumination bulb (if equipped), electronic steering column lock control module, climatronic control module, front passenger air bag igniter 1 & 2, brake lamp switch, radio, 20-pin connector, front information display control head, front information display control head control module, dvd changer, driver knee air bag igniter, external audio source connection & cd changer
• Driver seat back rest bolster heater & driver's back rest heating element
• Dvd, cd changer, front information display control head & chip card reader control module
• Emergency flasher indicator lamp, left instrument panel vent illumination bulb (if equipped), right instrument panel vent illumination bulb (if equipped), asr/esp button (w/ navigation), data bus on board diagnostic interface, front passenger air bag igniter 1 & 2, front passenger knee air bag igniter, parking aid button (w/ navigation) & fresh air blower control module
• External audio source connection shield
• Front passenger seat lumbar support adjustment switch (if equipped), passenger backrest adjustment switch, right rear door control module, front passenger back rest heating element, front passenger's power seat switch memory seat/steering column adjustment control module & front passenger's seat bolster heater
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• G624 (middle of luggage compt, near battery)
• G663
• G671 (on left front long member)
• G672
• G685 (on right front long member)
• G687 (left side of center tunnel)
• G688 (right side of center tunnel)
• G690
• G730 (base of right "c" pillar)
• Glove compartment lamp switch, right front footwell illumination bulb (if equipped), valet parking lock button & valet parking indicator lamp
• High- mounted brake lamp bulb (sedan)
• Information electronics control module 1
• Left rear heated seat temperature sensor (if equipped), front passenger's seat bolster heater, right rear footwell lamp (if equipped), socket illumination bulb (if equipped), converter w/ socket 12v & 230v, front passenger's seat lumbar support adjustment switch, fuel pump (fp) control module, 20-pin connector, fuel delivery unit, left rear bench seat heating element (if equipped), right rear bench seat heating element (if equipped), front passenger's side air bag igniter, right rear heated seat temperature sensor (if equipped), 12v socket 2 (if equipped), right rear door control module, vehicle positioning interface control module, passenger thorax air bag igniter, front passenger seat back- rest bolster heater & multimedia system preparation connector
• Nca
• Power steering control module
• Right front seat ventilation control module
• Right rear exterior door handle touch sensor & right rear door control module
• Right rear seat heating button, seat heating control module & left rear heating button
• Telephone transceiver (w/ navigation), telephone base plate, 18-pin connector & socket illumination

Ground Distribution Wiring Diagram (2 of 3) for Audi A4 2.0T 2012

List of elements for Ground Distribution Wiring Diagram (2 of 3) for Audi A4 2.0T 2012:

• Antenna amplifier 3 shield
• Antenna amplifier 3 shield, all wheel drive control module & voltage stabilizer (engine start/stop system)
• Antenna amplifier 3 shield, telephone base plate shield
• Charge air cooling pump, transmission range (tr) gear recognition switch (m/t), oil pressure switch, oil level thermal sensor, after run coolant pump & engine control module (ecm)
• Digital sound system control module, navigation system w/ cd drive control module, radio, satellite radio, tv tuner & antenna amplifier 3
• Engine control module (ecm), suppressor & transmission control module
• External audio source connection shield
• Fm frequency filter (-)
• G12 (3.0l) (left rear of engine compt)
• G15 (2.0l)
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G600 (3.0l)
• G601 (3.0l)
• G615 (on left front strut tower)
• G62 (right "c" pillar)
• G654 (top of right "d" pillar)
• Ignition coil 1 w/ power output stage, ignition coil 2 w/ power output stage, ignition coil 3 w/ power output stage & ignition coil 4 w/ power output stage
• Ignition coils 1, 2 & 3 w/ power output stage
• Ignition coils 1, 2 & 3 w/ power output stage & secondary air injection (air) pump motor
• Ignition coils 1, 2, 3 & 4 w/ power output stage
• Ignition coils 4, 5 & 6 w/ power output stage
• Left luggage compartment lamp, left rear taillamp assembly 1, left rear window breakage sensor, left brake/turn signal/taillamp, left rear footwell lamp (if equipped), left rear side marker lamp, radio frequency controlled clock receiver, driver's side rear thorax air bag igniter & fm frequency filter
• Radio, telephone, navigation system antenna shield
• Rear window wiper motor, left rear taillamp assembly 2, ambient lamp 1, right rear taillamp assembly 2, rear lid lock button (in luggage compartment), rear lid lock/ alarm/central locking switch, rear lid lock cylinder unlock button, left license plate light, right license plate light, high-mount brake lamp bulb, left brake/tail light lamp 2, left rear fog lamp & left brake lamp 2
• Right license plate light (sedan), rear window defogger relay, rear view camera system control module, left license plate light (sedan), cellular telephone amplifier, level control system control module, lane change assistance control module, lane change assistance control module 2, rear lid lock cylinder unlock button (sedan) & electro mechanical parking brake control module
• Right rear taillamp, left rear taillamp 2, rear sun shade motor (sedan if equipped), 12v socket 3 (if equipped), comfort system central control module, rear lid opening assist unlock stop switch, rear lid closing assist lock stop switch, right rear taillamp assembly 1, rear lid control module, rear lid control module 2, sockets relay, parallel parking assistance control module, right luggage compartment lamp, rear lid central locking system motor (sedan), right rear parking/fog lamp, right rear taillamp assembly 2 & high-mount brake light

Ground Distribution Wiring Diagram (3 of 3) for Audi A4 2.0T 2012

List of elements for Ground Distribution Wiring Diagram (3 of 3) for Audi A4 2.0T 2012:

• Automatic dimming interior rearview mirror relay, coolant recirculation pump (3.0l) (if equipped), driver's door control module, vehicle electrical system control module, wiper motor control module, alarm horn, automatic day/night interior mirror relay, right washer nozzle heater, left washer nozzle heater, clutch position sensor (m/t), garage door opener control module, air quality sensor, left front brake pad wear sensor & esp sensor unit
• Driver's backrest heating element & driver's seat backrest side bolster heater
• Driver's seat lumbar support adjustment switch, engine hood contact switch, driver thorax air bag igniter, multimedia system preparation connector, esp sensor unit 2 (if equipped), high tone horn, multi-media on driver's seat, headlamp washer pump (if equipped), left front fog lamp, left low beam headlamp, driver's thorax air bag igniter, left rear door control module, a/c pressure/temperature sensor, left headlamp assembly, driver's seat backrest bolster heater, horn relay, esp sensor unit, left high beam headlamp, left rear door control module & driver seat bolster heater
• Engine control module (ecm) & suppressor
• Fm frequency filter
• Fuel pump (fp) control module
• G12 (2.0l) (left rear of engine compt)
• G638 (behind right kick panel)
• G639 (behind left kick panel)
• G657
• G663
• Ignition coils 1, 2, 3 & 4 w/ power output stage & transmission control module (tcm)
• Left front seat ventilation control module & driver's seat bolster heater
• Left rear exterior door handle touch sensor & left rear door control module
• Low tone horn, front passenger's door control module, right front fog lamp bulb, left front turn signal/side marker lamp, right high beam headlamp, right low beam headlamp, right front brake pad wear sensor (optional equipment), right rear brake pad wear sensor, coolant recirculation pump (3.0l), front passenger thorax air bag igniter, headlamp range control module, right headlamp assembly, front passenger's side air bag igniter, headlamp range/cornering lamp control module, tire pressure monitoring control module, distance regulation control module (w/ adaptive cruise control), right high intensity gas discharge lamp control module, right headlamp power output stage, left low beam headlamp, right parking lamp, right day time running light (drl) lamp, right headlamp beam adjustment motor, right front turn signal lamp & left front side marker lamp
• Memory seat/steering column adjustment control module, driver's seat lumbar support adjustment switch, driver's seat angle adjustment switch, driver's backrest heating element & driver's seat height adjustment switch
• Power sunroof control module & roof shade control module
• Rain/light recognition sensor, driver's vanity mirror light contact switch, front passenger's vanity mirror light contact switch, power sunroof control module (sedan), anti-theft alarm system sensor, garage door opener control head, automatic day/night interior mirror, directional stabilization assistance control module, 6-pin connector, sunroof adjustment regulator (sedan), directional stabilization assistance windshield defogger humidity sensor (if equipped), driver's reading light button, light recognition sensor, assistance windshield heater & structure borne sound control module
• Right front exterior door handle touch sensor
• Transmission range (tr) gear recognition switch (m/t), oil level thermal sensor & after run coolant pump
• Vehicle positioning system interface control module

HEADLIGHTS

Headlights Wiring Diagram, with Bi-Xenon with Cornering Headlights (1 of 2) for Audi A4 2.0T 2012

List of elements for Headlights Wiring Diagram, with Bi-Xenon with Cornering Headlights (1 of 2) for Audi A4 2.0T 2012:

• 13a
• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Emergency flasher button
• Emergency flasher indicator lamp
• Fog lamp button
• Front passenger air bag disabled indicator lamp
• Fuse 5a
• Fuse carrier 1
• Fuse carrier 2
• G639 (behind left kick panel)
• G687 (left side of center tunnel)
• Hot at all times
• Instrument cluster control module
• Instrument panel illumination dimmer switch
• Interior lights system
• Left adaptive cornering light motor
• Left headlamp beam adjustment motor
• Left headlamp power output stage
• Left headlight assembly
• Left high intensity gas discharge (hid) lamp
• Left high intensity gas discharge (hid) lamp control module
• Left led parking lamp/drl module (w/ light sensor package)
• Left low beam reflector motor
• Light switch
• Marker lamp left front side
• Output stage lamp power left side marker
• Passenger's side fuse panel (behind right end of dash)
• Rear fog lamp button
• Signal lamp left front turn
• T12k
• T16b
• T17m
• T17n
• T32a
• T4ad
• Valet parking indicator lamp
• Valet parking lock button
• Vehicle electrical system control module (under left side of dash)

Headlights Wiring Diagram, with Bi-Xenon with Cornering Headlights (2 of 2) for Audi A4 2.0T 2012

List of elements for Headlights Wiring Diagram, with Bi-Xenon with Cornering Headlights (2 of 2) for Audi A4 2.0T 2012:

• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Fuse 5a
• Fuse carrier 1
• G638 (behind right kick panel)
• G639 (behind left kick panel)
• Left front fog lamp
• Output stage lamp power right side marker
• Right adaptive cornering light motor
• Right front fog lamp
• Right front side marker lamp
• Right front turn signal lamp
• Right headlamp beam adjustment motor
• Right headlamp power output stage
• Right headlight assembly
• Right high intensity gas discharge (hid) lamp
• Right high intensity gas discharge (hid) lamp control module
• Right led parking lamp/drl module (w/ light sensor package)
• Right low beam reflector motor
• T4ae

Headlights Wiring Diagram, with Bi-Xenon without Cornering Headlights (1 of 2) for Audi A4 2.0T 2012

List of elements for Headlights Wiring Diagram, with Bi-Xenon without Cornering Headlights (1 of 2) for Audi A4 2.0T 2012:

• 13a
• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Emergency flasher button
• Emergency flasher indicator lamp
• Fog lamp button
• Front passenger air bag disabled indicator lamp
• Fuse 5a
• Fuse carrier 1
• Fuse carrier 2
• G639 (behind left kick panel)
• G687 (left side of center tunnel)
• Hot at all times
• Instrument cluster control module
• Instrument panel illumination dimmer switch
• Interior lights system
• Left front side marker lamp
• Left front turn signal lamp
• Left headlamp beam adjustment motor
• Left headlight assembly
• Left high intensity gas discharge (hid) lamp
• Left high intensity gas discharge lamp control module
• Left led parking lamp/drl module (w/ light sensor package)
• Left side marker lamp power output stage
• Let low beam reflector motor
• Light switch
• Passenger's side fuse panel (behind right end of dash)
• Rear fog lamp button
• T12k
• T16b
• T17m
• T17n
• T32a
• T4ad
• Valet parking indicator lamp
• Valet parking lock button
• Vehicle electrical system control module (under left side of dash)

Headlights Wiring Diagram, with Bi-Xenon without Cornering Headlights (2 of 2) for Audi A4 2.0T 2012

List of elements for Headlights Wiring Diagram, with Bi-Xenon without Cornering Headlights (2 of 2) for Audi A4 2.0T 2012:

• G638 (behind right kick panel)
• G639 (behind left kick panel)
• Left front fog lamp
• Output stage lamp power right side marker
• Right front fog lamp
• Right front side marker lamp
• Right headlamp beam adjustment motor
• Right headlight assembly
• Right high intensity gas discharge (hid) lamp
• Right high intensity gas discharge lamp control module
• Right led parking lamp/drl module (w/ light sensor package)
• Right low beam reflector motor
• Signal lamp right front turn
• T4ae

Headlights Wiring Diagram, without Bi-Xenon Headlights for Audi A4 2.0T 2012

List of elements for Headlights Wiring Diagram, without Bi-Xenon Headlights for Audi A4 2.0T 2012:

• (behind left kick panel)
• 10a
• 13a
• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Emergency flasher button
• Emergency flasher indicator lamp
• Fog lamp button
• Front passenger air bag disabled indicator lamp
• Fuse 30a
• Fuse 5a
• Fuse carrier 1
• Fuse carrier 2
• Fuse carrier 3
• G638 (behind right kick panel)
• G639
• G639 (behind left kick panel)
• G687 (left side of center tunnel)
• Hot at all times
• Instrument cluster control module
• Instrument panel illumination dimmer switch
• Interior lights system
• Left front fog lamp
• Left headlight assembly
• Left high beam headlamp
• Left low beam headlamp
• Light switch
• Marker lamp left front side
• Marker lamp right front side
• Passenger's side fuse panel (behind right end of dash)
• Rear fog lamp button
• Right front fog lamp
• Right headlight assembly
• Right high beam headlamp
• Right low beam headlamp
• Sensor package) (w/ light (drl) lamp running light left daytime
• Sensor package) (w/ light (drl) lamp running light right daytime
• Signal lamp left front turn
• Signal lamp right front turn
• T12k
• T16b
• T17m
• T17n
• T32a
• Valet parking indicator lamp
• Valet parking lock button
• Vehicle electrical system control module (under left side of dash)

HORN

Horn Wiring Diagram for Audi A4 2.0T 2012

List of elements for Horn Wiring Diagram for Audi A4 2.0T 2012:

• Air bag spiral return/ slip ring (in steering column)
• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Fuse 25a
• Fuse carrier
• G638 (behind right kick panel)
• G639 (behind left kick panel)
• High tone horn (left end of front impact member)
• Horn relay (on vehicle electrical system control module relay/fuse carrier)
• Hot at all times
• Low tone horn (right end of front impact member)
• Nca
• Signal horn activation
• Steering column electronic systems control module (on steering column, behind steering wheel)
• Steering wheel control unit
• T16b
• T32b
• Vehicle electrical system control module (under left side of dash)

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram for Audi A4 2.0T 2012

List of elements for Instrument Cluster Wiring Diagram for Audi A4 2.0T 2012:

• (left side of center tunnel) g687
• Abs ind lamp
• Air bag indicator lamp
• Asr/ esp control lamp ind
• Computer data lines system
• Fuel delivery unit
• Fuel level sensor
• Fuel level sensor 2
• Fuse 5a
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G50 (left side of luggage compt)
• Hot at all times
• Instrument cluster
• Instrument cluster control module
• Radio frequency controlled clock
• Radio frequency controlled clock receiver
• Speedometer
• T17c
• T17f
• T17g
• Tachometer

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for Audi A4 2.0T 2012

List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Audi A4 2.0T 2012:

• 12a
• Ambient light 1
• Comfort system control module (right side of trunk)
• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Driver's vanity mirror light contact switch
• Front passenger's vanity mirror light contact switch
• Fuse 5a
• Fuse carrier 1
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G639 (behind left kick panel)
• G654 (top of right "d" pillar)
• G687 (left side of center tunnel)
• G730 (base of right "c" pillar)
• Glove compartment lamp switch
• Glove compartment light
• Left front footwell light (w/ additional lighting equipment)
• Left luggage compartment light
• Left rear footwell light (w/ additional lighting equipment)
• Luggage compartment light
• Rear lid lock button
• Right front footwell light (w/ additional lighting equipment)
• Right luggage compartment light
• Right rear footwell light (w/ additional lighting equipment)
• Sedan
• T10m
• T10p
• T12k
• T16b
• T17d
• T17l
• T17m
• T17p
• T32a
• T32b
• T32c
• Vanity mirror illumination (w/ additional lighting equipment)
• Vehicle electrical system control module (under left side of dash)
• Wagon

Courtesy Lamps Wiring Diagram (2 of 2) for Audi A4 2.0T 2012

List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Audi A4 2.0T 2012:

• Automatic day/ night interior mirror
• Computer data lines system
• Driver door control module (in driver front door)
• Driver reading lamp
• Driver reading lamp button
• Driver's door contact switch
• Driver's door warning light
• Front interior lamp
• Front interior lamp assembly
• Front passenger door control module (in front passenger front door)
• Front passenger reading lamp
• Front passenger reading lamp button
• Front passenger's door contact switch
• Front passenger's door warning light
• G639 (behind left kick panel)
• Instrument illumination circuit
• Interior lighting switch
• Left front entry light
• Left rear door contact switch
• Left rear door control module (in left rear door)
• Left rear door warning light
• Left rear entry light
• Left rear interior light
• Left rear reading light switch
• Rear interior lamp assembly
• Red
• Right front entry light
• Right rear door contact switch
• Right rear door control module (in right rear door)
• Right rear door warning light
• Right rear entry light
• Right rear interior light
• Right rear reading light switch 1
• T16o
• T16p
• T20f
• T20g
• T20h
• T20i
• T27a
• T27b
• T27c
• T27d
• T32j
• T32l
• T8b

Instrument Illumination Wiring Diagram (1 of 2) for Audi A4 2.0T 2012

List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Audi A4 2.0T 2012:

• (in left rear door) left rear door control module
• 12 v socket (if equipped)
• 12a
• Center instrument panel vent illumination (w/ additional lighting equipment)
• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Electromechanical parking brake button
• Fog lamp button
• Fuse 5a
• Fuse carrier
• G639 (behind left kick panel)
• G687 (left side of center tunnel)
• G688 (right side of center tunnel)
• Garage door opener control module (behind center of front grille)
• Hot at all times
• Instrument panel illumination dimmer switch
• Left instrument panel vent illumination (w/ additional lighting equipment)
• Left rear door opener illumination
• Left rear door warning light
• Left rear entry light
• Left rear interior lock switch
• Left rear window switch
• Light switch
• Parking aid button, asr/esp button & rear window shade switch
• Passenger's side fuse panel (behind right end of dash)
• Rear fog lamp button
• Rear temperature selection potentiometer
• Right instrument panel vent illumination (w/ additional lighting equipment)
• Right rear door control module (in right rear door)
• Right rear door opener illumination
• Right rear door warning light
• Right rear entry light
• Right rear interior lock switch
• Right rear window switch
• T12k
• T16b
• T16o
• T16p
• T17m
• T20h
• T20i
• T27b
• T27d
• T32a
• T32b
• Valet parking lock button
• Vehicle electrical system control module (under left side of dash)
• W/ navigation system
• W/o navigation system

Instrument Illumination Wiring Diagram (2 of 2) for Audi A4 2.0T 2012

List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Audi A4 2.0T 2012:

• (if equipped)
• (right side of center tunnel) g688
• 12 v socket 2 (if equipped)
• Alarm system deacti- vation switch
• Central locking safe indicator lamp
• Cigarette lighter illumi- nation
• Computer data lines system
• Driver door control module (in driver front door)
• Driver memory seat control head (w/ memory)
• Driver's door opener illumination
• Driver's door warning light
• Driver's interior locking switch
• Front interior lamp assembly
• Front passenger door control module (in front passenger front door)
• Front passenger's door opener illumination
• Front passenger's door warning light
• Front passenger's interior lock switch
• Front passenger's window regulator switch
• G639 (behind left kick panel)
• G688 (right side of center tunnel)
• G730 (base of right "c" pillar)
• Left front entry light
• Left rear heated seat regulating switch (if equipped)
• Left rear seat head restraint adjustment button
• Mirror adjustment switch
• Power window control head
• Rear lid remote unlock switch
• Right front entry light
• Right rear heated seat regulating switch
• Sunroof adjustment regulator
• T20f
• T20g
• T27a
• T27c
• T32j
• T32l
• T6e
• T8b
• Telephone base plate (if equipped)

MEMORY SYSTEMS

Memory Systems Wiring Diagram (1 of 3) for Audi A4 2.0T 2012

List of elements for Memory Systems Wiring Diagram (1 of 3) for Audi A4 2.0T 2012:

• (under driver's seat front seat cushion) driver's seat in angle adjustment motor/tilt adjustment sensor
• (under driver's seat front seat) driver's seat fore/back adjustment motor/sensor
• (under rear of driver seat cushion) driver's seat height adjustment motor/sensor
• Backrest
• Circuit breaker 1 15a
• Computer data lines system
• Driver power seat adjustment
• Driver's backrest adjustment motor/sensor (in driver front seat back)
• Driver's seat adjustment control head
• Fore/back
• G639 (behind left kick panel)
• Height
• Hot at all times
• Memory seat/ steering column adjustment control module (under driver's seat)
• Red
• Seats system
• T10p
• T10q
• T12l
• T16h
• T27a
• T32g
• T8u
• Tilt

Memory Systems Wiring Diagram (2 of 3) for Audi A4 2.0T 2012

List of elements for Memory Systems Wiring Diagram (2 of 3) for Audi A4 2.0T 2012:

• Adjustment motors
• Computer data lines system
• Day/night (if equipped)
• Driver door control module (in driver front door)
• Driver's exterior mirror assembly
• Driver's seat memory seat control head
• Entry lamp
• Fold-in
• Fuse 30a
• Fuse carrier
• Fuse panel c
• G639 (behind left kick panel)
• Heater
• Horizontal
• Hot at all times
• Interior lights system
• Lane change (if equipped)
• Memory button
• Navigation system
• Nca
• Off
• Pnk
• Position 1 button
• Position 2 button
• Power distribution system
• Red
• T16m
• T20f
• T27a
• T32j
• Turn signal lamp
• Vertical

Memory Systems Wiring Diagram (3 of 3) for Audi A4 2.0T 2012

List of elements for Memory Systems Wiring Diagram (3 of 3) for Audi A4 2.0T 2012:

• Adjustment motor
• Adjustment switch
• Computer data lines system
• Day/night (if equipped)
• Entry lamp
• Fold away switch
• Fold-in
• Front passenger's door control module (in front passenger front door)
• Front passenger's exterior mirror assembly
• Fuse 30a
• Fuse carrier 3
• G638 (behind right kick panel)
• Heater
• Horizontal
• Hot at all times
• Interior lights system
• Lane change (if equipped)
• Mirror adjustment switch assembly
• Motor adjustment
• Navigation system
• Nca
• Power distribution system
• Red
• Relay/fuse panel f (right side of luggage compt)
• Selector switch
• T16n
• T20g
• T27c
• Turn signal lamp
• Vertical

NAVIGATION

Lane Departure Warning Wiring Diagram for Audi A4 2.0T 2012

List of elements for Lane Departure Warning Wiring Diagram for Audi A4 2.0T 2012:

• 11a
• Change lane
• Computer data lines system
• Directional stabilization assistance control module (in automatic day/night interior mirror)
• Directional stabilization assistance windshield defogger
• Driver's exterior mirror assembly
• Driver's side fuse panel (behind left end of dash)
• Front passenger's exterior mirror assembly
• Fuse 10a
• Fuse 5a
• Fuse carrier
• G51 (right side of luggage compt)
• G639 (behind left kick panel)
• Interior lights system
• Lane change
• Lane change assistance button
• Lane change assistance control module (behind right side of rear bumper)
• Lane change assistance control module 2 (behind left side of rear bumper)
• Lane change assistance ind lamp
• Nca
• T16v
• T27a
• T27c

Navigation Wiring Diagram, Basic MMI (1 of 2) for Audi A4 2.0T 2012

List of elements for Navigation Wiring Diagram, Basic MMI (1 of 2) for Audi A4 2.0T 2012:

• 18-pin connector
• 5-door
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Antenna amplifier 4 (left side of cargo area)
• Central locking & anti-theft alarm system antenna
• Comfort system control module (right side of trunk)
• Computer data lines system
• Fuse 30a
• Fuse 7.5a
• Fuse carrier
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• Hot at all times
• Most data bus circuit
• Nca
• Radio
• Relay/fuse panel f (right side of luggage compt)
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid-bass speaker
• Right rear treble speaker
• Sedan
• T10ag
• T12w
• T17f
• T18a
• T1ai
• T1ao
• T1ap
• T1aq
• T1ar
• T1as
• T1h
• T1i
• T1l
• T1m
• T20c
• T27b
• T27c
• T27d
• T2ap
• T2df
• T2dg
• T2dh
• T2dn
• T2do
• T8ag
• Tv tuner (if equipped) (left side of trunk)
• Wagon

Navigation Wiring Diagram, Basic MMI (2 of 2) for Audi A4 2.0T 2012

List of elements for Navigation Wiring Diagram, Basic MMI (2 of 2) for Audi A4 2.0T 2012:

• Antenna amplifier 2 (if equipped) (right rear of roof)
• Auxiliary heater antenna (if equipped)
• Auxiliary heater radio receiver (if equipped)
• Cd/dvd changer
• Computer data lines system
• Digital radio antenna
• Fuse 5a
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G62 (right "c" pillar)
• G687 (left side of center tunnel)
• Gps antenna
• Hot at all times
• Information electronics control module 1
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid-bass speaker
• Left rear treble speaker
• Most data bus circuit
• Nca
• Radio/telephone & navigation system antenna (center rear of roof)
• Satellite antenna (if equipped)
• T17d
• T1ac
• T1ae
• T1af
• T1ag
• T1ah
• T1ai
• T1n
• T1o
• T1w
• T27a
• T2dm
• T8aa
• Telephone antenna (if equipped)
• Telephone baseplate (if equipped)

Navigation Wiring Diagram, Premium MMI (1 of 2) for Audi A4 2.0T 2012

List of elements for Navigation Wiring Diagram, Premium MMI (1 of 2) for Audi A4 2.0T 2012:

• Antenna amplifier 2 (right rear of roof)
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Antenna amplifier 4 (left side of cargo area)
• Auxiliary heater antenna (if equipped)
• Auxiliary heater radio receiver (if equipped)
• Cd/dvd changer
• Central locking & anti-theft alarm system antenna
• Comfort system control module (right side of trunk)
• Computer data lines system
• Digital radio antenna (if equipped)
• Fuse 30a
• Fuse 5a
• Fuse 7.5a
• Fuse carrier
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• G62 (right "c" pillar)
• G687 (left side of center tunnel)
• Gps antenna (w/ navigation)
• Hot at all times
• Information electronics control module 1
• Most data bus circuit
• Nca
• Radio
• Radio/telephone & navigation system antenna (center rear of roof)
• Relay/fuse panel f (right side of luggage compt)
• Satellite antenna (if equipped)
• Sedan
• T10ag
• T1ac
• T1ae
• T1af
• T1ag
• T1ah
• T1ai
• T1ao
• T1ap
• T1aq
• T1ar
• T1as
• T1h
• T1i
• T1m
• T1n
• T1o
• T1w
• T20c
• T2ap
• T2df
• T2dg
• T2dh
• T2dm
• T2dn
• T2do
• T8aa
• Telephone antenna (if equipped)
• Telephone baseplate
• Tv tuner (if equipped) (left side of trunk)
• Wagon

Navigation Wiring Diagram, Premium MMI (2 of 2) for Audi A4 2.0T 2012

List of elements for Navigation Wiring Diagram, Premium MMI (2 of 2) for Audi A4 2.0T 2012:

• (left side of luggage compt) g50
• (sedan: left rear of trunk)
• Center mid- treble speaker
• Computer data lines system
• Digital sound system control module (wagon: left rear of cargo area)
• Inside microphone
• Left front bass speaker
• Left front mid-range speaker
• Left front treble speaker
• Left rear mid- bass speaker
• Left rear midrange speaker
• Left rear treble speaker
• Microphone unit (in front roof module)
• Most data bus circuit
• Nca
• Right front bass speaker
• Right front midrange speaker
• Right front treble speaker
• Right rear mid- bass speaker
• Right rear midrange speaker
• Right rear treble speaker
• Subwoofer
• T17c
• T17d
• T17f
• T18b
• T27a
• T27b
• T27c
• T27d
• T2dk
• T32h

Navigation Wiring Diagram, Standard MMI (1 of 2) for Audi A4 2.0T 2012

List of elements for Navigation Wiring Diagram, Standard MMI (1 of 2) for Audi A4 2.0T 2012:

• 18-pin connector
• 5-door
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Antenna amplifier 4
• Central locking & anti-theft alarm system antenna
• Comfort system control module (right side of trunk)
• Computer data lines system
• Fuse 30a
• Fuse 7.5a
• Fuse carrier
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• Hot at all times
• Most data bus circuit
• Nca
• Radio
• Relay/fuse panel f (right side of luggage compt)
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid-bass speaker
• Right rear treble speaker
• Sedan
• T10ag
• T12w
• T17c
• T17f
• T18a
• T1ai
• T1ao
• T1ap
• T1aq
• T1ar
• T1as
• T1h
• T1i
• T1l
• T1m
• T20c
• T27b
• T27c
• T27d
• T2ap
• T2df
• T2dg
• T2dh
• T2dn
• T2do
• T8ag
• Tv tuner (if equipped) (left side of trunk)
• Wagon

Navigation Wiring Diagram, Standard MMI (2 of 2) for Audi A4 2.0T 2012

List of elements for Navigation Wiring Diagram, Standard MMI (2 of 2) for Audi A4 2.0T 2012:

• (if equipped) spare wheel well subwoofer
• Antenna amplifier 2 (if equipped) (right rear of roof)
• Auxiliary heater antenna (if equipped)
• Auxiliary heater radio receiver (if equipped)
• Cd/dvd changer
• Center mid-treble speaker
• Computer data lines system
• Digital radio antenna
• Fuse 5a
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G62 (right "c" pillar)
• G687 (left side of center tunnel)
• Gps antenna (w/ navigation)
• Hot at all times
• Information electronics control module 1
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid-bass speaker
• Left rear treble speaker
• Most data bus circuit
• Nca
• Radio/telephone & navigation system antenna (center rear of roof)
• Satellite antenna (if equipped)
• T17d
• T1ac
• T1ae
• T1af
• T1ag
• T1ah
• T1ai
• T1n
• T1o
• T1w
• T27a
• T2dm
• T8aa
• Telephone antenna (if equipped)
• Telephone baseplate (if equipped)

Parking Assistant Wiring Diagram for Audi A4 2.0T 2012

List of elements for Parking Assistant Wiring Diagram for Audi A4 2.0T 2012:

• (left side of center tunnel) (w/ navigation) g687 g688 (w/o navigation) (right side of center tunnel)
• Computer data lines system
• Front parking aid warning buzzer (under center console)
• Fuse 30a
• Fuse carrier 3
• Fuse panel c
• G639 (behind left kick panel)
• Hot at all times
• Indicator
• Left front center parking aid sensor (in radiator grille)
• Left front parking aid sensor (in front bumper)
• Left rear center parking aid sensor (on rear bumper)
• Left rear parking aid sensor (on rear bumper)
• Parking aid button
• Parking aid switch
• Rear parking aid warning buzzer (left side of cargo area)
• Right front center parking aid sensor (on front bumper)
• Right front parking aid sensor (front bumper)
• Right rear center parking aid sensor (on rear bumper)
• Right rear parking aid sensor (on rear bumper)
• T16b
• T16v
• T17m
• T32a
• T32b
• T6v
• T8r
• Vehicle electrical system control module (under left side of dash)
• W/ navigation
• W/o navigation

Rear Camera Wiring Diagram for Audi A4 2.0T 2012

List of elements for Rear Camera Wiring Diagram for Audi A4 2.0T 2012:

• Computer data lines system
• Fuse 5a
• Fuse carrier
• G51 (right side of luggage compt)
• Hot at all times
• Information electronics control module 1 (if equipped)
• Nca
• Pins: 1-38 (not used)
• Rear view camera (in rear lid handle)
• Rear view camera system control module (right side of trunk)
• Relay/ fuse panel f (right side of luggage compt)
• T12x
• T1m
• T1o
• T1r
• T1s
• T1y
• T54b
• Tv tuner (left side of trunk)

Vehicle Positioning Interface Control Module Wiring Diagram for Audi A4 2.0T 2012

List of elements for Vehicle Positioning Interface Control Module Wiring Diagram for Audi A4 2.0T 2012:

• (right side of luggage compt)
• 12a
• Brake light switch (top of brake pedal assembly)
• Comfort system control module (right side of trunk)
• Computer data lines system
• Engine control module (right rear of engine compt)
• Fuse 5a
• Fuse carrier 2
• G663
• Hot at all times
• Relay/fuse panel f
• T17e
• T17r
• T32c
• T94
• Vehicle positioning system interface control module

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 6) for Audi A4 2.0T 2012

List of elements for Power Distribution Wiring Diagram (1 of 6) for Audi A4 2.0T 2012:

• (not used)
• 10a
• 12a
• 18 pin connector
• 40a
• A/c pressure/ temperature sensor
• Abs control module
• Air quality sensor (comfort)
• Automatic day/night interior mirror
• Automatic day/night interior mirror relay (w/ start/ stop system)
• Automatic dimming interior rearview mirror
• Automatic dimming interior rearview mirror relay
• Battery
• Clutch position sensor (m/t)
• Comfort system central control module
• Data bus on board diagnostic interface
• Data link connector (dlc)
• Directional stabilization assistance control module
• Distance regulation control module (w/ adaptive cruise control)
• Driver's side fuse panel (behind left end of dash)
• Electro- mechanical parking brake button & auto hold button
• From driver's fuse panel (diagram 6 of 6)
• From fuse panel c (diagram 4 of 6)
• Fuse
• Fuse 10a
• Fuse 110a
• Fuse 15a
• Fuse 30a
• Fuse 5a
• Fuse 7.5a
• Fuse carrier
• Fuse carrier 1
• Fuse panel a (on battery, in luggage compt)
• G624 (middle of luggage compt, near battery)
• Garage door opener control head
• Garage door opener control module
• Generator & voltage regulator
• High heat output relay
• Information electronics control module 1
• Left headlamp assembly (w/ bi-xenon & cornering lights)
• Parking aid button, asr/esp button & rear window shade switch
• Passenger side fuse panel (behind right end of dash)
• Radio (premium mmi)
• Rear view camera system control module
• Rear window defogger fuse
• Rear window defogger relay
• Red
• Relay/ fuse panel f (right side of luggage compt)
• Relay/fuse panel f (diagram 3 of 6)
• Right front seat ventilation control module
• Right headlamp assembly (w/ bi-xenon & cornering lights)
• Seat heating control module
• Sedan
• Selector lever sensor system control module
• Steering column electronic systems control module
• T10ag
• T12n
• T17e
• T17r
• T20c
• T20d
• T32b
• T32d
• T54b
• T6k
• T8ao
• T8c
• T8f
• Telephone base plate
• To fuse 14 (diagram 4 of 6)
• To fuse 2 (diagram 2 of 6)
• To passenger side fuse panel (diagram 2 of 6)
• To relay/fuse panel f (diagram 3 of 6)
• To voltage stabilizer (diagram 3 of 6)
• Transmission park selector switch & shift lock solenoid
• Tv tuner
• Vehicle electrical system control module
• W/ navigation
• W/ start/stop system
• Wagon

Power Distribution Wiring Diagram (2 of 6) for Audi A4 2.0T 2012

List of elements for Power Distribution Wiring Diagram (2 of 6) for Audi A4 2.0T 2012:

• (not used)
• 10a
• 11a
• 12a
• 2.0l turbo
• 3.0l
• 400w
• 40a
• 50a
• 600w
• Abs control module
• Abs control module fuse 1
• Access/ start authorization switch
• Air bag control module
• Auxiliary heater fuse
• Auxiliary heater fuse 2
• Battery interrupt igniter
• Battery jump start terminal (middle of engine compt plenum chamber)
• Cd changer & dvd changer
• Climatronic control module
• Coolant fan control (fc) control module
• Coolant fan control (fc) control module 2 (800w)
• Data bus on board diagnostic interface
• Data link connector (dlc)
• Electronic steering column lock control module
• Engine control module (ecm)
• External audio source connection
• Fresh air blower control module
• From a fuse 1 (diagram 1 of 6)
• From relay/fuse panel f (diagram 1 of 6)
• Front information display control head
• Fuse 10a
• Fuse 110a
• Fuse 20a
• Fuse 40a
• Fuse 5a
• Fuse 60a 40a
• Fuse carrier
• Fuse panel a (on battery, in luggage compt)
• Generator & voltage regulator
• High heat output relay
• Instrument cluster control module
• Light switch
• Low heat output relay
• Passenger's side fuse panel (behind right end of dash)
• Power steering control module
• Radio
• Red
• Relay/fuse panel b (diagram 5 of 6)
• Secondary air injection (air) pump fuse
• Secondary air injection (air) pump relay
• Starter
• Steering column electronic systems control module
• Suppressor
• T16l
• T17g
• T20d
• T20e
• T2n
• T8aa
• T94
• To driver power seat adjustment circuit breaker 1 (diagram 6 of 6)
• To driver's side fuse panel (diagram 6 of 6)
• To relay/fuse panel b (diagram 5 of 6)
• W/ start/stop system
• W/o start/stop system

Power Distribution Wiring Diagram (3 of 6) for Audi A4 2.0T 2012

List of elements for Power Distribution Wiring Diagram (3 of 6) for Audi A4 2.0T 2012:

• (not used)
• (right side of luggage compt) relay/fuse panel f
• 10a
• 11a
• 12a
• All wheel drive control module
• Auxiliary heater control module
• Auxiliary heater radio receiver
• Cellular telephone amplifier
• Comfort system central control module
• Digital sound system control module
• Electro- mechanical parking brake button
• Electro- mechanical parking brake control module
• From battery monitoring control module (diagram 1 of 6)
• From driver's side fuse panel (diagram 4 of 6)
• From fuse panel a (diagram 1 of 6)
• From fuse panel a (diagram 1 of 6) x
• From relay/fuse panel f (diagram 1 of 6)
• From sockets relay (diagram 4 of 6)
• Front passenger's door control module
• Fuse
• Fuse 15a
• Fuse 20a
• Fuse 25a
• Fuse 30a
• Fuse 35a
• Fuse 40a
• Fuse 5a
• Fuse carrier
• Fuse carrier 2
• Fuse carrier 3
• G51 (right side of luggage compt)
• Level control system control module
• Multimedia system preparation connector
• Premium sound system
• Radio (basic & standard)
• Rear lid control module (wagon)
• Rear lid control module 2 (wagon)
• Red
• Reducing agent metering system control module
• Relay/fuse panel f (right side of luggage compt)
• Right rear door control module
• Seat heating control module (if equipped)
• T10ag
• T12c
• T17o
• T17p
• T20g
• T20i
• T27c
• T27d
• T2da
• T2db
• T2dy
• T2dz
• T32h
• T4aj
• T4ak
• T54a
• T8am
• T8f
• Telephone baseplate (w/ center armrest)
• Telephone transceiver
• Tire pressure monitoring control module
• To converter w/ socket 12v & 230v (diagram 4 of 6)
• To sockets relay (diagram 4 of 6)
• Towing recognition control module
• Vehicle positioning system interface control module
• Voltage stabilizer (w/ engine start/stop system) (in spare tire well)
• W/ standard sound system

Power Distribution Wiring Diagram (4 of 6) for Audi A4 2.0T 2012

List of elements for Power Distribution Wiring Diagram (4 of 6) for Audi A4 2.0T 2012:

• (not used)
• (right side of luggage compt) g51
• 10a
• 11a
• 12 v socket (if equipped)
• 12 v socket 2 (if equipped)
• 12 v socket 3 (sedan)
• 12 v socket 3 (wagon)
• 12a
• 13a
• 14a
• 15a
• 16a
• 18 pin conncetors
• 2.0l turbo
• 3.0l
• Air bag control module
• All wheel drive control module
• Cigarette lighter
• Comfort system central control module
• Converter w/ socket, 12v & 230v (if equipped)
• Driver's side fuse panel (behind left end of dash)
• Electro mechnical parking brake control module
• From fuse 3 (diagram 1 of 6)
• From relay/ fuse panel f e (diagram 3 of 6)
• From relay/fuse panel b (diagram 5 of 6)
• From relay/fuse panel f (diagram 3 of 6)
• Front passenger's air bag disabled indicator lamp
• Fuse
• Fuse 10a
• Fuse 15a
• Fuse 40a
• Fuse 5a
• Fuse 7.5a
• Fuse carrier
• G51 (right side of luggage compt)
• G688 (right side of center tunnel)
• G730 (base of right "c" pillar)
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Interior lights system
• Lane change assistance control module
• Lane change assistance control module 2
• Level control system control module
• Passenger occupant detection system control module (if equipped)
• Rear window wiper motor
• Relay/fuse panel f (right side of luggage compt)
• Sockets relay (luggage compt relay/ fuse carrier)
• Structure borne sound control module
• T10n
• T12d
• T16v
• T17c
• T17f
• T32c
• To passenger's side fuse panel (diagram 1 of 6)
• To relay/fuse panel f (diagram 3 of 6)
• To starter relay 2 (diagram 5 of 6)
• To voltage stabilizer (diagram 3 of 6)
• Towing recognition control module
• W/ power output stage

Power Distribution Wiring Diagram (5 of 6) for Audi A4 2.0T 2012

List of elements for Power Distribution Wiring Diagram (5 of 6) for Audi A4 2.0T 2012:

• (in plenum chamber electronics box) relay/ fuse panel b
• 10a
• 11a
• 12a
• 15a
• 2.0l t94
• 2.0l turbo
• 3.0l
• 3.0l t94
• 8 speed a/t
• Auxiliary engine coolant (ec) pump relay
• Cam adjustment actuator 1
• Cam adjustment actuator 2
• Cam adjustment actuator 3
• Cam adjustment actuator 4
• Cam adjustment actuator 5
• Cam adjustment actuator 6
• Cam adjustment actuator 7
• Cam adjustment actuator 8
• Camshaft adjustment valve 1
• Camshaft adjustment valve 2 (3.0l)
• Charge air cooling pump (3.0l)
• Climatronic refrigerant shut-off valve
• Coolant fan control (fc) control module
• Coolant fan control (fc) control module 2 (800w)
• Cvt
• Direct shift gearbox (dsg) mechatronic (7 speed a/t)
• Engine control module (ecm)
• Evap canister purge regulator valve (2.0l turbo)
• From driver's side fuse panel (diagram 4 of 6)
• From fuse panel a (diagram 2 of 6)
• From fuse q panel a (diagram 2 of 6)
• Fuel pressure regulator valve
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 5a
• Fuse 9
• Fuse carrier 1
• Heater oxygen sensor (ho2s) & oxygen sensor (o2s) heater
• Heater oxygen sensor (ho2s) 2 & oxygen sensor (o2s) 2 heater
• Intake manifold runner control (imrc) valve (2.0l turbo)
• Leak detection pump (ldp) (2.0l turbo)
• Left electo- hydraulic engine mount solenoid valve
• Mass air flow sensor
• Nca
• Oil level thermal sensor
• Oil pressure regulation valve (2.0l turbo)
• Oxygen sensor (o2s) (after 3-way catalytic converter (twc)) & oxygen sensor (o2s) 1 (after 3-way catalytic converter (twc)) heater
• Oxygen sensor (o2s) 2 (after 3-way catalytic converter (twc)) & oxygen sensor (o2s) 2 (after 3-way catalytic converter (twc)) heater
• Power steering control module
• Red
• Right electro- hydraulic engine mount solenoid valve (3.0l)
• Starter relay
• Starter relay 2
• T14f
• T16r
• T17q
• T17r
• T5l
• T6h
• T94
• To drivers side fuse panel (diagram 6 of 6)
• To ignition coils (diagram 4 of 6)
• To intake manifold runner control (imrc) valve (diagram 6 of 6)
• Transmission control module (tcm)
• Turbocharger recirculating valve (2.0l turbo)
• Wastegate bypass regulator valve (2.0l turbo)

Power Distribution Wiring Diagram (6 of 6) for Audi A4 2.0T 2012

List of elements for Power Distribution Wiring Diagram (6 of 6) for Audi A4 2.0T 2012:

• (if equipped)
• (not used)
• 10a
• 11a
• 12a
• 15a
• 3.0l
• Abs control module
• Alarm horn
• Anti-theft alarm system sensor
• Automatic dimming interior rearview mirror
• Brake light switch
• Clutch position sensor (m/t)
• Driver power seat adjustment circuit breaker 1
• Driver's door control module
• Driver's power seat switch (w/o memory)
• Driver's seat lumbar support adjustment switch (w/ power seats)
• Driver's seat lumbar support adjustment switch (w/o power seats)
• Driver's side fuse panel (behind left end of dash)
• Evap canister purge regul- ator valve
• From fuse panel a (diagram 2 of 6)
• From relay/ fuse panel b (diagram 5 of 6)
• Front passenger power seat adjustment circuit breaker 1
• Front passenger's seat lumbar support adjustment switch (w/ power seats)
• Front passenger's seat lumbar support adjustment switch (w/o power seats)
• Fuel metering valve
• Fuel pump (fp) control module
• Fuse
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 25a
• Fuse 30a
• Fuse 35a
• Fuse 5a
• Fuse carrier
• Horn relay
• Intake manifold runner control (imrc) valve
• Leak detection pump (ldp)
• Left front seat ventilation control module
• Left rear door control module
• Memory seat/ steering column adjustment control module (w/ memory)
• Oil pressure regulation valve
• Passenger's power seat switch
• Power sunroof control module
• Rain/light recognition sensor
• Red
• Reducing agent metering system pressure sensor
• Roof shade control module (if equipped)
• Secondary air injection (air) pump relay
• Secondary air injection (air) solenoid valve
• Secondary air injection (air) solenoid valve 2
• T10m
• T10p
• T12l
• T13c
• T14e
• T17e
• T17l
• T17m
• T17n
• T20f
• T20h
• T27a
• T27b
• T6bn
• T6e
• T6f
• T6i
• T8am
• T8e
• Vehicle electrical system control module
• W/ roof shade
• W/ seat ventilation
• W/o seat ventilation
• Wiper motor control module

POWER DOOR LOCKS

Power Door Locks Wiring Diagram (1 of 3) for Audi A4 2.0T 2012

List of elements for Power Door Locks Wiring Diagram (1 of 3) for Audi A4 2.0T 2012:

• (right side of trunk) comfort system control module
• (sedan) rear lid lock cylinder unlock button
• 11a
• Antenna amplifier 3 (sedan: left side of trunk) (avant: left side of cargo area)
• Central locking & anti-theft alarm system antenna (sedan)
• Computer data lines system
• Driver's door central locking lock unit
• Driver's door control module (in driver's front door)
• Fuse 15a
• Fuse 30a
• Fuse carrier 2
• Fuse panel c
• G51 (right side of luggage compt)
• G638 (behind right kick panel)
• G639 (behind left kick panel)
• G654 (top of right "d" pillar)
• Ground distribution system
• Hot at all times
• Left front exterior door handle touch sensor
• Nca
• Rear lid lock/ alarm/ central locking switch & rear lid central locking system motor
• Red
• Right front exterior door handle touch sensor
• Sedan
• T17o
• T1h
• T20f
• T27a
• T27c
• T32c
• T32d
• T32e
• T32j
• Trunk lid lock/ alarm/ central locking switch & rear lid central locking system motor
• W/ mmi
• W/ safe function
• W/o mmi
• Wagon

Power Door Locks Wiring Diagram (2 of 3) for Audi A4 2.0T 2012

List of elements for Power Door Locks Wiring Diagram (2 of 3) for Audi A4 2.0T 2012:

• (if equipped) left rear interior lock switch
• Central locking safe indicator lamp
• Driver's interior locking switch
• G639 (behind left kick panel)
• G730 (base of right "c" pillar)
• Ground distribution system
• Interior lights system
• Left rear central locking lock unit
• Left rear door control module (in left rear door)
• Left rear exterior door handle touch sensor
• Power windows system
• Rear lid remote unlock switch
• Red
• Right rear exterior door handle touch sensor
• Right rear interior lock switch (if equipped)
• T16o
• T20h
• T27a
• T27b
• T27d
• W/ safe function

Power Door Locks Wiring Diagram (3 of 3) for Audi A4 2.0T 2012

List of elements for Power Door Locks Wiring Diagram (3 of 3) for Audi A4 2.0T 2012:

• (if equipped)
• 11a
• Computer data lines system
• Front passenger door central locking lock unit
• Front passenger interior lock switch
• Front passenger's door control module (in front passenger's door)
• Fuse 15a
• Fuse 30a
• Fuse carrier 3
• G638 (behind right kick panel)
• G730 (base of right "c" pillar)
• Ground distribution system
• Hot at all times
• Interior lights system
• Power windows system
• Relay/ fuse panel f (right side of luggage compt)
• Right rear central locking lock unit
• Right rear door control module (in right rear door)
• T16p
• T20g
• T20i
• T27c
• T27d
• T32i
• W/ safe function

POWER MIRRORS

Automatic Day/Night Mirror Wiring Diagram for Audi A4 2.0T 2012

List of elements for Automatic Day/Night Mirror Wiring Diagram for Audi A4 2.0T 2012:

• (right side of luggage compt)
• 12a
• Automatic day/night interior mirror
• Automatic dimming interior rearview mirror
• Automatic dimming interior rearview mirror relay
• Beam control
• Comfort system control module (right side of trunk)
• Computer data lines system
• Day/night
• Driver door control module (in driver front door)
• Driver's
• Exterior lights system
• Exterior mirror assembly
• Front passenger's door control module (in passenger front door)
• Front passenger's exterior mirror assembly
• Fuse 30a
• Fuse 5a
• Fuse carrier
• Fuse panel c
• G638 (behind right kick panel)
• G639 (behind left kick panel)
• Hot at all times
• Humidity sensor (if equipped)
• Interior lights system
• Rain/light recognisa- tion sensor
• Relay/fuse panel f
• System
• T16b
• T16m
• T16n
• T17p
• T20f
• T20g
• T27a
• T27c
• T3c
• T8c
• Vehicle electrical system control module (under left side of dash)
• W/ automatic high
• W/ start/stop
• W/o automatic high
• W/o start/stop
• Wiper/washer system

Power Mirrors Wiring Diagram (1 of 2) for Audi A4 2.0T 2012

List of elements for Power Mirrors Wiring Diagram (1 of 2) for Audi A4 2.0T 2012:

• Adjustment motors
• Computer data lines system
• Day/night (if equipped)
• Driver door control module (in driver front door)
• Driver's exterior mirror assembly
• Entry lamp
• Fold-in
• Fuse 30a
• Fuse carrier 2
• Fuse carrier 3
• Fuse panel c
• G639 (behind left kick panel)
• Heater
• Horizontal
• Hot at all times
• Interior lights system
• Lane change (if equipped)
• Navigation system
• Nca
• Pnk
• Power distribution system
• Red
• Relay/fuse panel f (right side of luggage compt)
• T16m
• T20f
• T27a
• T27c
• T32j
• Turn signal lamp
• Vertical

Power Mirrors Wiring Diagram (2 of 2) for Audi A4 2.0T 2012

List of elements for Power Mirrors Wiring Diagram (2 of 2) for Audi A4 2.0T 2012:

• Adjustment motors
• Adjustment switch
• Computer data lines system
• Day/night (if equipped)
• Entry lamp
• Fold away switch
• Fold-in
• Front passenger's door control module (in front passenger door)
• Front passenger's exterior mirror assembly
• G638 (behind right kick panel)
• Heater
• Horizontal
• Interior lights
• Interior lights system
• Lane change (if equipped)
• Mirror adjustment switch assembly
• Navigation system
• Nca
• Red
• Selector switch
• System
• T16n
• T20g
• T27c
• Turn signal lamp
• Vertical

POWER SEATS

Front Heated Seats Wiring Diagram, with Memory Seats with Ventilation for Audi A4 2.0T 2012

List of elements for Front Heated Seats Wiring Diagram, with Memory Seats with Ventilation for Audi A4 2.0T 2012:

• Backrest heating element
• Circuit breaker 1 15a
• Driver power seat adjustment
• Driver's backrest heating element
• Driver's seat backrest blower fan (top of driver seat backrest)
• Driver's seat backrest blower fan 2 (middle of driver seat backrest)
• Driver's seat cushion blower fan (under front of driver seat cushion)
• Driver's seat cushion blower fan 2 (under rear of driver seat cushion)
• Driver's seat heater
• G639 (behind left kick panel)
• Hot at all times
• Left front seat temp sensor
• Memory seat/steering column adjustment control module (under driver's seat)
• Red
• Seat bolster heater
• Seat heating element
• T12l
• T16h
• T8z

Front Heated Seats Wiring Diagram, without Memory Seats with Ventilation for Audi A4 2.0T 2012

List of elements for Front Heated Seats Wiring Diagram, without Memory Seats with Ventilation for Audi A4 2.0T 2012:

• (behind left kick panel) g639
• Driver backrest heating element
• Driver seat backrest blower fan (top of driver seat backrest)
• Driver seat backrest blower fan 2 (middle of driver seat backrest)
• Driver seat cushion blower fan (under front of driver seat cushion)
• Driver seat cushion blower fan 2 (under rear of driver seat cushion)
• Front passenger backrest heating element
• Front passenger seat backrest blower fan (top of front passenger seat backrest)
• Front passenger seat backrest blower fan 2 (middle of front passenger seat backrest)
• Front passenger seat cushion blower fan (under front of front passenger seat cushion)
• Front passenger seat cushion blower fan 2 (under rear of front passenger seat cushion)
• Fuse 15a
• Fuse 30a
• Fuse carrier
• Fuse panel c
• G730 (base of right "c" pillar)
• Heating element
• Hot at all times
• Left front seat heater
• Left front seat ventilation control module (under driver's seat cushion)
• Red
• Relay/fuse panel f (right side of luggage compt)
• Right front seat heater
• Right front seat ventilation control module (under front passenger's seat cushion)
• Seat bolster heater
• Seat temperature sensor
• T16b
• T6i
• T6k
• T8y
• T8z
• Temperature sensor
• Vehicle electrical system control module (under left side of dash)

Front Heated Seats Wiring Diagram, without Ventilation for Audi A4 2.0T 2012

List of elements for Front Heated Seats Wiring Diagram, without Ventilation for Audi A4 2.0T 2012:

• Backrest heating element
• Backrest side bolster heater (if equipped)
• Climatronic control module
• Computer data lines system
• Driver's backrest heating element
• Driver's seat heater
• Front passenger's backrest heating element
• Front passenger's seat heater
• Fuse 30a
• Fuse carrier 2
• Fuse panel c
• G639 (behind left kick panel)
• G730 (base of right "c" pillar)
• Heated driver's seat adjuster
• Heated front passenger's seat adjuster
• Hot at all times
• Left front seat temp sensor
• Right front seat temp sensor
• Seat bolster heater (if equipped)
• Seat heating element
• Side bolster heater (if equipped)
• T16b
• T20e
• T32b
• T6f
• Vehicle electrical system control module (under left side of dash)

Lumbar Wiring Diagram for Audi A4 2.0T 2012

List of elements for Lumbar Wiring Diagram for Audi A4 2.0T 2012:

• Driver seat lumbar support curvature adjustment motor (in driver front seat back)
• Driver seat lumbar support height adjustment motor (in driver front seat back)
• Driver's seat lumbar support adjustment switch
• Front passenger seat lumbar support height adjustment motor (in passenger front seat back)
• Front passenger's seat lumbar support adjustment switch
• Front passenger's seat lumbar support curvature adjustment motor (in passenger front seat back)
• Fuse 10a
• Fuse carrier 3
• Fuse panel c
• G639 (behind left kick panel)
• G730 (base of right "c" pillar)
• Hot at all times
• Lumbar curv- ature
• Lumbar height
• T10m
• T10p
• T4u
• T4v

Power Seats Wiring Diagram for Audi A4 2.0T 2012

List of elements for Power Seats Wiring Diagram for Audi A4 2.0T 2012:

• Backrest
• Circuit breaker 15a
• Driver power seat adjustment
• Driver's backrest adjustment motor (in driver front seat back)
• Driver's power seat switch
• Driver's seat angle adjustment motor (under driver front seat cushion)
• Driver's seat forward/back adjustment motor (under driver front seat)
• Driver's seat height adjustment motor (under rear of driver seat cushion)
• Driver's seat lumbar support adjustment switch
• Driver's seat lumbar support curvature adjustment motor (in driver front seat back)
• Driver's seat lumbar support eight adjustment motor (in driver front seat back)
• Fore/ back
• Front passenger power seat adjustment
• Front passenger seat lumbar support adjustment switch
• Front passenger seat lumbar support curvature adjustment motor (in passenger front seat back)
• Front passenger seat lumbar support height adjustment motor (in passenger front seat back)
• Front passenger's backrest adjustment motor (in passenger front seat back)
• Front passenger's power seat switch
• Front passenger's seat angle adjustment motor (under passenger front seat cushion)
• Front passenger's seat forward/back adjustment motor (under passenger front seat)
• Front passenger's seat height adjustment motor (under rear of passenger seat cushion)
• G639 (behind left kick panel)
• G730 (base of right "c" pillar)
• Height
• Hot at all times
• T10m
• T8u
• T8v
• Tilt

Rear Heated Seats Wiring Diagram for Audi A4 2.0T 2012

List of elements for Rear Heated Seats Wiring Diagram for Audi A4 2.0T 2012:

• (base of right "c" pillar) g730
• Bench seat heating element
• Computer data lines system
• Fuse 30a
• Fuse 5a
• Fuse carrier
• Fuse panel c
• G688 (right side of center tunnel)
• Hot at all times
• Left rear backrest heating element
• Left rear seat heating
• Left rear seat heating button
• Relay/fuse panel f (right side of luggage compt)
• Right rear backrest heating element
• Right rear seat heating
• Right rear seat heating button
• Seat heating control module
• T16b
• T32b
• T8f
• Temperature sensor
• Vehicle electrical system control module (under left side of dash)

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagram, with Roof Blind for Audi A4 2.0T 2012

List of elements for Power Top/Sunroof Wiring Diagram, with Roof Blind for Audi A4 2.0T 2012:

• 11a
• Computer data lines system
• Fuse 20a
• Fuse carrier 3
• Fuse panel c
• G639 (behind left kick panel)
• G639 (behind left left kick panel)
• Hot at all times
• Interior lights system
• Power sunroof control module (center front of roof)
• Red
• Roof shade control module
• Sunroof adjustment regulator
• Sunroof motor
• T6e

Power Top/Sunroof Wiring Diagram, without Roof Blind for Audi A4 2.0T 2012

List of elements for Power Top/Sunroof Wiring Diagram, without Roof Blind for Audi A4 2.0T 2012:

• Comfort system central control module (right side of trunk)
• Computer data lines system
• Fuse 20a
• Fuse carrier 3
• Fuse panel c
• G639 (behind left kick panel)
• Hot at all times
• Interior lights system
• Power sunroof control module (center front of roof)
• Sunroof adjustment regulator
• Sunroof motor
• T32c

POWER WINDOWS

Power Windows Wiring Diagram (1 of 2) for Audi A4 2.0T 2012

List of elements for Power Windows Wiring Diagram (1 of 2) for Audi A4 2.0T 2012:

• 11a
• Computer data lines system g639 (behind left kick panel)
• Driver window regulator motor
• Driver's door control module (in driver's front door)
• Front passenger window regulator motor
• Front passenger's door control module (in front passenger's front door)
• Fuse 15a
• Fuse 30a
• Fuse carrier
• Fuse panel c
• G638 (behind right kick panel)
• Ground distribution system
• Hot at all times
• Interior lights system
• Relay/fuse panel f (right side of luggage compt)
• Right front window regulator switch
• T20f
• T20g
• T27a
• T27c
• T2og
• T32j
• T32l
• T6a0
• T6am
• W/ additional lighting equipment

Power Windows Wiring Diagram (2 of 2) for Audi A4 2.0T 2012

List of elements for Power Windows Wiring Diagram (2 of 2) for Audi A4 2.0T 2012:

• Child safety lock button
• Driver's door power window control head
• Interior lights system
• Left front window regulator switch
• Left rear door control module (in left rear door)
• Left rear power window switch
• Left rear window regulator motor
• Left rear window regulator switch
• Right front window regulator switch
• Right rear door control module (in right rear door)
• Right rear window regulator motor
• Right rear window regulator switch
• Right rear window switch
• Switch illumination bulb
• T16o
• T16p
• T20h
• T20i
• T27b
• T27d
• T6au
• T6av
• W/ additional lighting equipment

Rear Window Sun Shade Wiring Diagram for Audi A4 2.0T 2012

List of elements for Rear Window Sun Shade Wiring Diagram for Audi A4 2.0T 2012:

• 10a
• 11a
• Comfort system central control module (right side of trunk)
• Computer data lines system
• Fuse 20a
• Fuse 30a
• Fuse carrier
• Fuse panel c
• G51 (right side of luggage compt)
• G639 (behind left kick panel)
• G687 (w/ navigation) (left side of center tunnel)
• G688 (w/o navigation) (right side of center tunnel)
• Hot at all times
• Rear sun shade motor
• Rear window shade switch
• Relay/ fuse panel f (right side of lugg- age compt)
• T16b
• T17g
• T17m
• T17n
• T17o
• T17p
• T32a
• T32c
• Vehicle electrical system control module (under left side of dash)
• W/o navigation

RADIO

MOST Data Bus Wiring Diagram for Audi A4 2.0T 2012

List of elements for MOST Data Bus Wiring Diagram for Audi A4 2.0T 2012:

• Cd changer/ dvd changer
• Data bus on board diagnostic interface (behind right center of dash)
• Digital sound system control module (if equipped) (wagon: left rear of cargo area) (sedan: left rear of trunk)
• Information electronics control module 1
• Lwl in
• Lwl out
• Nca
• Radio
• T2bg
• T2dg
• T2di
• T2dk
• T2dl
• T2dm
• T2do
• Tv tuner (left side of trunk)

Multimedia Interface Wiring Diagram (1 of 2) for Audi A4 2.0T 2012

List of elements for Multimedia Interface Wiring Diagram (1 of 2) for Audi A4 2.0T 2012:

• (left side of center tunnel) g687
• (right side of center tunnel) g688
• (w/o speaker phone)
• 12a
• 18 pin connector t18a
• Computer data lines system
• Front information display control head control module (behind glove box)
• Fuse 5a
• Fuse 7.5a
• Fuse carrier
• Fuse carrier 2
• G687 (left side of center tunnel)
• Hot at all times
• Information electronics control module 1
• Left front microphone
• Microphone unit (in front roof module)
• Mmi basic
• Mmi high
• Most data bus circuit
• Multimedia control head
• Nca
• Passenger's side fuse panel (behind right end of dash)
• Rear view camera system control module (if equipped) (right side of trunk)
• Red
• Relay/fuse panel f (right side of luggage compt)
• Right front microphone
• T12x
• T1o
• T1p
• T1s
• T1w
• T2di
• T32b
• T4aj
• T4al
• T4am
• T4an
• T4ao
• T8ah
• T8ai
• T8ao
• Telephone baseplate (w/ center armrest & w/o speaker)
• Telephone baseplate (w/o center armrest & w/ speaker)
• Vehicle electrical system control module (under left side of dash)
• W/ center armrest & w/o speaker
• W/ mmi basic
• W/ mmi high
• W/o center armrest & w/ speaker

Multimedia Interface Wiring Diagram (2 of 2) for Audi A4 2.0T 2012

List of elements for Multimedia Interface Wiring Diagram (2 of 2) for Audi A4 2.0T 2012:

• (behind left kick panel) g639
• Antenna amplifier
• Antenna amplifier 2 (sedan) (right rear of roof)
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Antenna amplifier 4 (wagon) (left side of cargo area)
• Auxiliary heater antenna
• Auxiliary heater radio receiver (if equipped)
• Central
• Comfort system control module (right side of trunk)
• Computer data lines system
• External audio source connection
• Fuse 10a
• Fuse 5a
• Fuse carrier 5
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• G62 (right "c" pillar)
• G730 (base of right "c" pillar)
• Gps system antenna
• Hot at all times
• Information electronics control module 1
• Locking & anti-theft alarm system antenna
• Most data bus circuit
• Multimedia system preparation connector
• Nca
• Radio (if equipped)
• Radio/ telephone & & navigation system antenna (sedan) (center rear of roof)
• Red
• Relay/fuse panel f (right side of luggage compt)
• Satellite antenna
• Sedan
• T12n
• T12y
• T1ac
• T1ae
• T1af
• T1ag
• T1ah
• T1ai
• T1ao
• T1ap
• T1aq
• T1ar
• T1as
• T1h
• T1i
• T1l
• T1m
• T1n
• T20c
• T2aq
• T2da
• T2db
• T2df
• T2dh
• T2dn
• T2do
• T2dy
• T2dz
• T4ap
• T5g
• Telephone antenna
• Tv tuner (if equipped) (left side of trunk)
• W/ aux-in connection
• W/o aux-in connection
• Wagon

Radio Wiring Diagram, Basic Infotainment (1 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Basic Infotainment (1 of 2) for Audi A4 2.0T 2012:

• Antenna amplifier (right rear of roof)
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Computer data lines system
• External audio source connection
• Fuse 20a
• Fuse 5a
• Fuse carrier
• Fuse panel d (lower right side of dash)
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• G687 (left side of center tunnel)
• G688 (right side of center tunnel)
• Hot at all times
• Nca
• Radio
• Radio/ telephone & navigation system antenna (w/ roof antenna) (center rear of roof)
• Satellite antenna
• T12a
• T12s
• T16l
• T1a0
• T1ac
• T1ah
• T1ap
• T1i
• T1l
• T2de
• T2df
• T8k
• Telephone transceiver (under front passenger's seat)
• W/ aux-in connection
• W/o aux-in connection

Radio Wiring Diagram, Basic Infotainment (2 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Basic Infotainment (2 of 2) for Audi A4 2.0T 2012:

• Cd/dvd changer
• Computer data lines system
• Front information display control head control module (behind glove box)
• Front information display control head control module (if equipped) (behind glove box)
• Fuse 5a
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G687 (left side of center tunnel)
• Hot at all times
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid/low range speaker
• Left rear treble speaker
• Most data bus circuit
• Nca
• Pnk
• Radio
• Red
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid-bass range speaker
• Right rear treble speaker
• T10v
• T17d
• T17f
• T27a
• T27b
• T27c
• T27d
• T2dm
• T8aa

Radio Wiring Diagram, Basic MMI (1 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Basic MMI (1 of 2) for Audi A4 2.0T 2012:

• 18-pin connector
• 5-door
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Antenna amplifier 4 (left side of cargo area)
• Central locking & anti-theft alarm system antenna
• Comfort system control module (right side of trunk)
• Computer data lines system
• Fuse 30a
• Fuse 7.5a
• Fuse carrier
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• Hot at all times
• Most data bus circuit
• Nca
• Radio
• Relay/fuse panel f (right side of luggage compt)
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid-bass speaker
• Right rear treble speaker
• Sedan
• T10ag
• T12w
• T17f
• T18a
• T1ai
• T1ao
• T1ap
• T1aq
• T1ar
• T1as
• T1h
• T1i
• T1l
• T1m
• T20c
• T27b
• T27c
• T27d
• T2ap
• T2df
• T2dg
• T2dh
• T2dn
• T2do
• T8ag
• Tv tuner (if equipped) (left side of trunk)
• Wagon

Radio Wiring Diagram, Basic MMI (2 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Basic MMI (2 of 2) for Audi A4 2.0T 2012:

• Antenna amplifier 2 (if equipped) (right rear of roof)
• Auxiliary heater antenna (if equipped)
• Auxiliary heater radio receiver (if equipped)
• Cd/dvd changer
• Computer data lines system
• Digital radio antenna
• Fuse 5a
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G62 (right "c" pillar)
• G687 (left side of center tunnel)
• Gps antenna
• Hot at all times
• Information electronics control module 1
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid-bass speaker
• Left rear treble speaker
• Most data bus circuit
• Nca
• Radio/telephone & navigation system antenna (center rear of roof)
• Satellite antenna (if equipped)
• T17d
• T1ac
• T1ae
• T1af
• T1ag
• T1ah
• T1ai
• T1n
• T1o
• T1w
• T27a
• T2dm
• T8aa
• Telephone antenna (if equipped)
• Telephone baseplate (if equipped)

Radio Wiring Diagram, Premium Infotainment (1 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Premium Infotainment (1 of 2) for Audi A4 2.0T 2012:

• Antenna amplifier (right rear of roof)
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Computer data lines system
• External audio source connection
• Fuse 20a
• Fuse 5a
• Fuse carrier
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• G687 (left side of center tunnel)
• G688 (right side of center tunnel)
• Hot at all times
• Nca
• Passenger's side fuse panel (behind right end of dash)
• Radio
• Radio/telephone & navigation system antenna (w/ roof antenna) (center rear of roof)
• Satellite antenna
• T12a
• T12s
• T16l
• T1ac
• T1ah
• T1ao
• T1ap
• T1i
• T1l
• T2df
• T8k
• Telephone transceiver (under front passenger's seat)
• W/ aux-in connector
• W/o aux-in connector

Radio Wiring Diagram, Premium Infotainment (2 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Premium Infotainment (2 of 2) for Audi A4 2.0T 2012:

• Center mid-treble range speaker
• Computer data lines system
• Digital sound system control module (sedan: left rear of trunk) (wagon: left rear of cargo area)
• Front information display control head control module (w/ radio concert or symphony) (behind glove box)
• Fuse 30a
• Fuse carrier 3
• G50 (left side of luggage compt)
• Hot at all times
• Inside microphone
• Left front bass speaker
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid-bass speaker
• Left rear midrange speaker
• Left rear treble speaker
• Microphone unit (in front roof module)
• Pnk
• Radio
• Red
• Relay/fuse panel f (right side of luggage compt)
• Right front bass speaker
• Right front midrange speaker
• Right front treble speaker
• Right rear mid-bass range speaker
• Right rear midrange speaker
• Right rear treble speaker
• Subwoofer
• T10v
• T17c
• T17d
• T17f
• T18b
• T27a
• T27b
• T27c
• T27d
• T32h
• Telephone microphone

Radio Wiring Diagram, Premium MMI (1 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Premium MMI (1 of 2) for Audi A4 2.0T 2012:

• Antenna amplifier 2 (right rear of roof)
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Antenna amplifier 4 (left side of cargo area)
• Auxiliary heater antenna (if equipped)
• Auxiliary heater radio receiver (if equipped)
• Cd/dvd changer
• Central locking & anti-theft alarm system antenna
• Comfort system control module (right side of trunk)
• Computer data lines system
• Digital radio antenna (if equipped)
• Fuse 30a
• Fuse 5a
• Fuse 7.5a
• Fuse carrier
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• G62 (right "c" pillar)
• G687 (left side of center tunnel)
• Gps antenna (w/ navigation)
• Hot at all times
• Information electronics control module 1
• Most data bus circuit
• Nca
• Radio
• Radio/telephone & navigation system antenna (center rear of roof)
• Relay/fuse panel f (right side of luggage compt)
• Satellite antenna (if equipped)
• Sedan
• T10ag
• T1ac
• T1ae
• T1af
• T1ag
• T1ah
• T1ai
• T1ao
• T1ap
• T1aq
• T1ar
• T1as
• T1h
• T1i
• T1m
• T1n
• T1o
• T1w
• T20c
• T2ap
• T2df
• T2dg
• T2dh
• T2dm
• T2dn
• T2do
• T8aa
• Telephone antenna (if equipped)
• Telephone baseplate
• Tv tuner (if equipped) (left side of trunk)
• Wagon

Radio Wiring Diagram, Premium MMI (2 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Premium MMI (2 of 2) for Audi A4 2.0T 2012:

• (left side of luggage compt) g50
• (sedan: left rear of trunk)
• Center mid- treble speaker
• Computer data lines system
• Digital sound system control module (wagon: left rear of cargo area)
• Inside microphone
• Left front bass speaker
• Left front mid-range speaker
• Left front treble speaker
• Left rear mid- bass speaker
• Left rear midrange speaker
• Left rear treble speaker
• Microphone unit (in front roof module)
• Most data bus circuit
• Nca
• Right front bass speaker
• Right front midrange speaker
• Right front treble speaker
• Right rear mid- bass speaker
• Right rear midrange speaker
• Right rear treble speaker
• Subwoofer
• T17c
• T17d
• T17f
• T18b
• T27a
• T27b
• T27c
• T27d
• T2dk
• T32h

Radio Wiring Diagram, Standard Infotainment (1 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Standard Infotainment (1 of 2) for Audi A4 2.0T 2012:

• Antenna amplifier (right rear of roof)
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Computer data lines system
• External audio source connection
• Fuse 20a
• Fuse 5a
• Fuse carrier 2
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• G687 (left side of center tunnel)
• G688 (right side of center tunnel)
• Hot at all times
• Nca
• Passenger's side fuse panel (behind right end of dash)
• Radio
• Radio/telephone & navigation system antenna (w/ roof antenna) (center rear of roof)
• Satellite antenna
• T12a
• T12s
• T16l
• T1ac
• T1ah
• T1al
• T1ao
• T1i
• T1l
• T2df
• T8k
• Telephone transceiver (under front passenger's seat)
• W/ aux-in connection
• W/o aux-in connection

Radio Wiring Diagram, Standard Infotainment (2 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Standard Infotainment (2 of 2) for Audi A4 2.0T 2012:

• Center mid-treble speaker
• Computer data lines system
• Digital sound system control module (wagon: left rear of cargo area) (sedan: left rear of trunk)
• Front information display control head control module (w/ radio concert or symphony) (behind glove box)
• Fuse 30a
• Fuse carrier 3
• G50 (left side of luggage compt)
• Hot at all times
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid-bass speaker
• Left rear treble speaker
• Pnk
• Radio
• Red
• Relay/fuse panel f (right side of luggage compt)
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid-bass speaker
• Right rear treble speaker
• Subwoofer
• T10v
• T17c
• T17d
• T17f
• T27a
• T27b
• T27c
• T27d

Radio Wiring Diagram, Standard MMI (1 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Standard MMI (1 of 2) for Audi A4 2.0T 2012:

• 18-pin connector
• 5-door
• Antenna amplifier 3 (sedan: left side of trunk) (wagon: left side of cargo area)
• Antenna amplifier 4
• Central locking & anti-theft alarm system antenna
• Comfort system control module (right side of trunk)
• Computer data lines system
• Fuse 30a
• Fuse 7.5a
• Fuse carrier
• G50 (left side of luggage compt)
• G51 (right side of luggage compt)
• G61 (sedan: left "c" pillar) (wagon: behind left quarterpanel)
• Hot at all times
• Most data bus circuit
• Nca
• Radio
• Relay/fuse panel f (right side of luggage compt)
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid-bass speaker
• Right rear treble speaker
• Sedan
• T10ag
• T12w
• T17c
• T17f
• T18a
• T1ai
• T1ao
• T1ap
• T1aq
• T1ar
• T1as
• T1h
• T1i
• T1l
• T1m
• T20c
• T27b
• T27c
• T27d
• T2ap
• T2df
• T2dg
• T2dh
• T2dn
• T2do
• T8ag
• Tv tuner (if equipped) (left side of trunk)
• Wagon

Radio Wiring Diagram, Standard MMI (2 of 2) for Audi A4 2.0T 2012

List of elements for Radio Wiring Diagram, Standard MMI (2 of 2) for Audi A4 2.0T 2012:

• (if equipped) spare wheel well subwoofer
• Antenna amplifier 2 (if equipped) (right rear of roof)
• Auxiliary heater antenna (if equipped)
• Auxiliary heater radio receiver (if equipped)
• Cd/dvd changer
• Center mid-treble speaker
• Computer data lines system
• Digital radio antenna
• Fuse 5a
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G62 (right "c" pillar)
• G687 (left side of center tunnel)
• Gps antenna (w/ navigation)
• Hot at all times
• Information electronics control module 1
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid-bass speaker
• Left rear treble speaker
• Most data bus circuit
• Nca
• Radio/telephone & navigation system antenna (center rear of roof)
• Satellite antenna (if equipped)
• T17d
• T1ac
• T1ae
• T1af
• T1ag
• T1ah
• T1ai
• T1n
• T1o
• T1w
• T27a
• T2dm
• T8aa
• Telephone antenna (if equipped)
• Telephone baseplate (if equipped)

Structure Borne Sound Actuator Wiring Diagram for Audi A4 2.0T 2012

List of elements for Structure Borne Sound Actuator Wiring Diagram for Audi A4 2.0T 2012:

• (behind left kick panel) g639
• Computer data lines system
• Fuse 5a
• Fuse carrier
• Fuse panel c
• Structure borne sound actuator
• Structure borne sound control module

SHIFT INTERLOCK

Park Brake Release Wiring Diagram for Audi A4 2.0T 2012

List of elements for Park Brake Release Wiring Diagram for Audi A4 2.0T 2012:

• Abs control module (left side of engine compt)
• Auto- hold button
• Clutch position sensor (m/t)
• Computer data lines system
• Electro- mechanical parking brake control module (right side of trunk)
• Electro-mechanical parking brake button
• Fuse 30a
• Fuse 5a
• Fuse carrier
• Fuse carrier 1
• Fuse panel c
• Fuse panel f (right side of luggage compt)
• G51 (right side of luggage compt)
• Hot at all times
• Interior lights system
• Left parking brake motor
• Right parking brake motor

Shift Interlock Wiring Diagram for Audi A4 2.0T 2012

List of elements for Shift Interlock Wiring Diagram for Audi A4 2.0T 2012:

• (in mechatronic unit) transmission control module (tcm)
• (on shifter unit) shift lock solenoid
• 10a
• 2.0l
• 3.0l
• Access/start authorization button
• Brake light switch (top of brake pedal assembly)
• Climatronic control module
• Comfort system control module (right side of trunk)
• Computer data lines system
• Direct shift gearbox (dsg) transmission mechatronic
• Engine control module (ecm) (2.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Fuse 5a
• Fuse carrier 1
• Fuse panel c
• G687 (left side of center tunnel)
• G688 (right side of center tunnel)
• Interior lighting switch
• Power distribution system
• Selector lever sensor system control module (on shifter unit)
• T16r
• T17e
• T17q
• T17r
• T20e
• T32b
• T32d
• T94
• Transmission control module (tcm)
• Vehicle electrical system control module (under left side of dash)
• Vehicle positioning system interface control module
• W/ 8 speed a/t
• W/ cvt
• W/ direct shift
• W/o direct shift

Steering Column Wiring Diagram for Audi A4 2.0T 2012

List of elements for Steering Column Wiring Diagram for Audi A4 2.0T 2012:

• Access/start authorization switch
• Comfort system control module (right side of trunk)
• Electronic steering column lock control module (on steering column)
• Fuse 5a
• Fuse carrier 2
• Fuse panel d (lower right side of dash)
• G687 (left side of center tunnel)
• Hot at all times
• T17f
• T17g
• T17p
• T32a
• T32c
• T32d
• Vehicle electrical system control module (under left side of dash)

STARTING/CHARGING

Charging Wiring Diagram for Audi A4 2.0T 2012

List of elements for Charging Wiring Diagram for Audi A4 2.0T 2012:

• (not used)
• 2.0l
• Battery
• Battery interrupt igniter
• Battery jump start terminal (middle of engine compt plenum chamber)
• Data bus on board diagnostic interface (behind right center of dash)
• Fuse panel a (on battery, in luggage compt)
• G624 (middle of luggage compt, near battery)
• Generator & voltage regulator
• Starter
• T17e
• T17q
• T17r
• T2y
• Voltage stabilizer (w/ engine start/ stop system) (in spare tire well)

Starting Wiring Diagram for Audi A4 2.0T 2012

List of elements for Starting Wiring Diagram for Audi A4 2.0T 2012:

• (in mechatronic unit) transmission control module (tcm)
• (right side of trunk) electro mechanical parking brake control module
• 10a
• 12a
• 16a
• 2.0l
• 3.0l
• Battery
• Battery interrupt igniter
• Battery jump start terminal d4 (middle of engine compt plenum chamber)
• Charging circuit
• Clutch position sensor (m/t)
• Comfort system central control module (right side of trunk)
• Computer data lines system
• Control
• Direct shift
• Engine control module (ecm) (2.0l: left side of engine compt plenum chamber) (3.0l: right rear of engine compt)
• Engine controls system
• Fuse (2.0l) 5a
• Fuse 110a
• Fuse 40a
• Fuse 5a
• Fuse carrier
• Fuse panel a (on battery, in luggage compt)
• Fuse panel c
• G624 (middle of luggage compt, near battery)
• G639 (behind left kick panel)
• G688 (right side of center tunnel)
• Gearbox (dsg)
• Mechatronic
• Module (tcm)
• Power distribution
• Prnds
• Red
• Relay energized
• Relay/ fuse panel b (in plenum chamber electronics box)
• Selector lever sensor system control module (on shifter unit)
• Shift interlock system
• Sockets relay (3.0l) (on relay/fuse panel f)
• Starter
• Starter relay (on relay/fuse panel b)
• Starter relay 2 (on relay/fuse panel b)
• System
• T16r
• T17q
• T17r
• T2y
• T30a
• T32b
• T32d
• T5l
• T94
• Transmission
• Vehicle electrical system control module (under left side of dash)
• W/ direct shift gearbox
• W/o direct shift gearbox

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram (1 of 3) for Audi A4 2.0T 2012

List of elements for Supplemental Restraints Wiring Diagram (1 of 3) for Audi A4 2.0T 2012:

• (base of right "c" pillar) g730
• (left side of luggage compt) g50
• 13a
• Air bag control module (below center console)
• Air bag spiral return/slip ring (in steering column)
• Battery interrupt igniter
• Computer data lines system
• Driver air bag igniter & igniter 2 (in steering wheel)
• Driver's front air bag crash sensor (on left headlamp housing bracket)
• Driver's side air bag crash sensor (in driver's front door)
• Front passenger's air bag disabled indicator lamp
• Front passenger's front air bag crash sensor (on right headlamp housing bracket)
• Front passenger's side air bag crash sensor (in passenger's front door)
• Fuse 5a
• Fuse carrier
• Fuse panel c
• Hot at all times
• Igniter
• Igniter 2
• Main fuse panel sa
• Nca
• Power distribution system
• Rear passenger's side air bag igniter (driver's side) (left "c" pillar)
• Rear passenger's side air bag igniter (front passenger's side) (right "c" pillar)
• Rear side air bag crash sensor (driver's side) (in left "c" pillar)
• Rear side air bag crash sensor (front passenger's side) (in right "c" pillar)
• Red
• Solid state
• T10n
• T17f
• T17x
• T27a
• T27c

Supplemental Restraints Wiring Diagram (2 of 3) for Audi A4 2.0T 2012

List of elements for Supplemental Restraints Wiring Diagram (2 of 3) for Audi A4 2.0T 2012:

• (behind left kick panel) g639
• (behind right kick panel) g638
• Air bag malfunction indicator lamp (mil)
• Computer data lines system
• Data bus on board diagnostic interface (behind right center of dash)
• Driver's seat belt tensioner & driver's belt force limiter (base of left "b" pillar)
• Driver's side air bag igniter (outer side of driver's seat back)
• Force limiter
• Front passenger's safety belt switch & seat occupied recognition safety belt force sensor
• Front passenger's seat belt tensioner & front passenger's belt force limiter (base of right "b" pillar)
• Front passenger's side air bag igniter (outer side of front passenger's seat back)
• Fuse 5a
• Fuse carrier
• G687 (left side of center tunnel)
• Hot at all times
• Igniter
• Instrument cluster
• Instrument cluster control module
• Nca
• Passenger's side can separating plug
• Passenger's side fuse panel (behind right end of dash)
• Red
• Seat occupied recognition control module (under front passenger's seat)
• Seat occupied recognition pressure sensor (in front passenger's seat cushion)
• Solid state
• T10n
• T20d
• T2ai
• T2ca
• T2cd
• T2ce

Supplemental Restraints Wiring Diagram (3 of 3) for Audi A4 2.0T 2012

List of elements for Supplemental Restraints Wiring Diagram (3 of 3) for Audi A4 2.0T 2012:

• (if equipped) front passenger's air bag deactivation key switch
• (in left automatic belt retractor) left rear seat belt tensioner igniter
• (left side of center tunnel) g687
• (under driver's front seat) driver's seat position sensor
• (under front passenger's seat) front passenger seat position sensor
• Air bag control module (below center console)
• Center rear seat belt tensioner igniter
• Driver's head curtain air bag igniter
• Driver's safety belt switch
• Front passenger's air bag igniter 1 & 2 (behind right side of dash)
• Front passenger's head curtain air bag igniter
• Igniter
• Nca
• Red
• Right rear seat belt tensioner igniter (in right automatic belt retractor)
• Solid state
• T10n
• T10o
• T12k
• T17g
• T17x
• T2bh
• T2cl

TRANSMISSION

A/T Wiring Diagram, 8 Speed A/T (1 of 2) for Audi A4 2.0T 2012

List of elements for A/T Wiring Diagram, 8 Speed A/T (1 of 2) for Audi A4 2.0T 2012:

• 10a
• 12a
• Automatic transmission pressure regulating valve 1
• Automatic transmission pressure regulating valve 2
• Automatic transmission pressure regulating valve 3
• Automatic transmission pressure regulating valve 4
• Automatic transmission pressure regulating valve 5
• Automatic transmission pressure regulating valve 6
• Automatic transmission pressure regulating valve 7
• Comfort system central control module (right side of trunk)
• Computer data lines system
• Drive position sensor
• Fuse 15a
• Fuse 5a
• Fuse carrier 1
• Fuse panel c
• G12 (left rear of engine compt)
• G688 (right side of center tunnel)
• Hot at all times
• Relay/ fuse panel b (in plenum chamber on electronics box)
• Selector lever sensor system control module (on shifter unit)
• Solenoid valve 1
• T17q
• T32b
• T32d
• Transmission control module (tcm) (in mechatronic unit)
• Transmission fluid temperature sensor
• Transmission input speed sensor
• Transmission output speed sensor
• Transmission park selector switch & shift lock solenoid (shift lock solenoid: on shifter unit)
• Vehicle electrical system control module (under left side of dash)

A/T Wiring Diagram, 8 Speed A/T (2 of 2) for Audi A4 2.0T 2012

List of elements for A/T Wiring Diagram, 8 Speed A/T (2 of 2) for Audi A4 2.0T 2012:

• (lower right side of dash)
• (right rear of engine compt) engine control module
• 12a
• Air bag spiral spring/return spring w/ slip ring (in steering column)
• Computer data lines system
• Fuse 5a
• Fuse carrier 1
• Fuse carrier 2
• Fuse panel d
• G687 (left side of center tunnel)
• Hot at all times
• Left multi-function buttons on steering wheel
• Mode
• Multi-function steering wheel control module
• Nca
• Right multi-function buttons on steering wheel
• Steering column electronics control module (on steering column, behind steering wheel)
• Steering wheel control unit
• Steering wheel vibration motor (w/ lane assist)
• T16f
• T17b
• T17q
• T94
• Tiptronic downshift button on steering wheel (w/ tiptronic)
• Tiptronic upshift button on steering wheel (w/ tiptronic)
• W/ lane assist
• W/ tiptronic

A/T Wiring Diagram, CVT for Audi A4 2.0T 2012

List of elements for A/T Wiring Diagram, CVT for Audi A4 2.0T 2012:

• (left rear of engine compt) g12
• 10a
• 12a
• Access/start authorization button
• Comfort system control module (right side of trunk)
• Computer data lines system
• Engine control module (ecm) (left side of engine compt plenum chamber)
• Engine controls system
• Fuse 15a
• Fuse 5a
• Fuse carrier
• Fuse carrier 1
• Fuse panel c
• G688 (right side of center tunnel)
• Hot at all times
• Interior lights system
• Power distribution system
• Relay/fuse panel b (in plenum chamber electronics box)
• Selector lever sensor system control module (on shifter unit)
• T17q
• T32b
• T32d
• T94
• Transmission control module (tcm) (in mechatronic unit)
• Transmission park selector switch & shift lock solenoid (shift lock solenoid: on shifter unit)
• Vehicle electrical system control module (under left side of dash)

AWD Wiring Diagram for Audi A4 2.0T 2012

List of elements for AWD Wiring Diagram for Audi A4 2.0T 2012:

• Abs control module (left side of engine compt)
• Active steering control module (w/ special equipment) (under driver's footwell carpet)
• All wheel drive clutch valve
• All wheel drive clutch valve 2
• All wheel drive control module (in spare tire well)
• All wheel drive pump
• Computer data lines system
• Esp sensor unit (under driver's seat)
• Esp sensor unit 2 (w/ special equipment) (under driver's seat)
• Fuse 35a
• Fuse carrier 2
• G51 (right side of luggage compt)
• G639 (behind left kick panel)
• Hot at all times
• Oil pressure/ temperature sensor
• Oil pressure/ temperature sensor 2
• Power distribution system
• Relay/fuse panel f (right side of luggage compt)
• Rotation rate sensor
• Transverse acceleration sensor
• Transverse acceleration sensor (if equipped)

TRUNK, TAILGATE, FUEL DOOR

Trunk & Fuel Door Release Wiring Diagram for Audi A4 2.0T 2012

List of elements for Trunk & Fuel Door Release Wiring Diagram for Audi A4 2.0T 2012:

• (behind left kick panel) g639
• (right side of luggage compt) g51
• 10a
• 11a
• Comfort system control module (right side of trunk)
• Computer data lines system
• Driver's door control module (in driver's front door)
• Fuel tank lid unlock motor
• Fuse 20a
• Fuse 30a
• Fuse carrier
• Fuse panel c
• G51 (right side of luggage compt)
• G654 (top of right "d" pillar)
• Ground distribution system
• Hot at all times
• Interior lights system
• Power distribution system
• Rear lid closing assist motor/rear lid opening assist unlock stop switch/rear lid closing assist lock stop switch
• Rear lid control module
• Rear lid control module 2
• Rear lid lock button
• Rear lid lock cylinder unlock button
• Rear lid remote unlock switch
• Red
• Relay/fuse panel f (right side of luggage compt)
• Sedan
• T17o
• T17p
• T20f
• T27a
• T32c
• T32d
• T32e
• T32j
• Trunk lid alarm switch & rear lid central locking system motor
• Wagon

WARNING SYSTEMS

Brake Wear Sensor Wiring Diagram for Audi A4 2.0T 2012

List of elements for Brake Wear Sensor Wiring Diagram for Audi A4 2.0T 2012:

• Computer data lines system
• Driver's side fuse panel (behind left end of dash)
• Fuse 20a
• Fuse carrier
• G639 (behind left kick panel)
• Hot at all times
• Instrument cluster control module
• Left front brake pad wear sensor
• T16b
• T17l
• T32b
• Vehicle electrical system control module (under left side of dash)

Tire Pressure Monitoring Wiring Diagram for Audi A4 2.0T 2012

List of elements for Tire Pressure Monitoring Wiring Diagram for Audi A4 2.0T 2012:

• Computer data lines system
• Fuse 5a
• Fuse carrier 2
• G638 (behind right kick panel)
• Hot at all times
• Instrument cluster control module
• Left front tire pressure monitoring sensor (in left front wheel assembly)
• Left rear tire pressure monitoring sensor (in left rear wheel assembly)
• Power distribution system
• Relay/ fuse panel f (right side of luggage compt)
• Right front tire pressure monitoring sensor (in right front wheel assembly)
• Right rear tire pressure monitoring sensor (in right rear wheel assembly)
• Tire pressure monitoring control module (behind right side of dash)

WIPER/WASHER

Jet Heater Wiring Diagram for Audi A4 2.0T 2012

List of elements for Jet Heater Wiring Diagram for Audi A4 2.0T 2012:

• Fuse 35a
• Fuse carrier
• Fuse panel c
• G639 (behind left kick panel)
• Left washer nozzle heater
• Right washer nozzle heater
• T17l
• T17m
• T17n
• T32b
• Vehicle electrical system control module (under left side of dash)

Wiper/Washer Wiring Diagram for Audi A4 2.0T 2012

List of elements for Wiper/Washer Wiring Diagram for Audi A4 2.0T 2012:

• 12a
• 14a
• Automatic dimming interior rearview mirror
• Computer data lines system
• Fuse 15a
• Fuse 30a
• Fuse 35a
• Fuse 5a
• Fuse carrier
• Fuse carrier 1
• Fuse carrier 3
• Fuse panel c
• Fuse panel d (lower right side of dash)
• G639 (behind left kick panel)
• G654 (top of right "d" pillar)
• G687 (left side of center tunnel)
• Headlamp washer pump (if equipped)
• Hot at all times
• Instrument cluster control module
• Nca
• Rain/light recognition sensor
• Rear window wiper motor (wagon)
• Relay/fuse panel f (right side of luggage compt)
• Steering column electronic systems control module (on steering column, behind steering wheel)
• T16b
• T17l
• T17m
• T17n
• T32b
• T3c
• Vehicle electrical system control module (under left side of dash)
• Wagon
• Windshield washer fluid level sensor
• Windshield washer pump
• Windshield wiper intermittent mode switch
• Wiper control module (left rear of engine compt, in plenum chamber)