All Wiring Diagrams for Audi S8 2003 – Wiring diagrams for cars

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Audi S8 2003

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Audi S8 2003:

(behind lower left center of dash, on hvac assembly)
(behind lower left center of dash, on hvac assembly) left footwell flap motor/position sensor
(behind lower right center of dash, on hvac assembly) right footwell flap motor/position sensor
(behind right center of dash, on hvac assembly) flap motor temperature regulator/position sensor
(left rear of engine compt)
(left rear of engine compt) recirculation flap motor/ position sensor
1/+
2/-
A/c control head
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
Air flow flap motor/ back pressure flap motor position sensor
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
Center vent adjusting motor/position sensor
Fresh air blower (center rear of engine compt)
Fresh air blower control module (right rear of engine compt)
G43 (above right kick panel)
Interior monitoring sensors control module
Left center vent motor/position sensor (behind upper left center of dash, on hvac assembly)
Rear footwell vent motor/position sensor (behind lower left center of dash, on hvac assembly)
Red
Right center vent motor/position sensor (behind upper right center of dash, on hvac assembly)
Solid state

Automatic A/C Wiring Diagram (2 of 3) for Audi S8 2003

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List of elements for Automatic A/C Wiring Diagram (2 of 3) for Audi S8 2003:

(above left kick panel) g44
(above right kick panel) g43
(behind left center of dash) left vent temperature sensor
(behind left center of dash, on hvac assembly) defroster flap motor/ position sensor
(behind right center of dash) right vent temperature sensor
(left rear of engine compt) fresh air intake duct temperature sensor
(on right front footwell e-box relay panel) solar cell separation relay
(or red)
40a
60a
Air quality sensor
Blower fan fuse
Central electric panel
Coolant fan
Coolant fan control relay (below left side of dash)
Coolant fan control series resistance (lower left front of engine compt)
Coolant fan control thermal switch (lower right side of radiator)
Coolant fan fuse
Fuse 4 (st2) 5a
Fuse panel (right front foot- well)
G43 (above right kick panel)
Hot at all times
Hot w/ load reduction relay energized
Left center vent switch (behind upper left center of dash, on vent)
Nca
Red
Second speed coolant fan control relay (below left side of dash)
Solar cells
Solar operation control module
Solid state
Third speed coolant fan control relay (below left side of dash)

Automatic A/C Wiring Diagram (3 of 3) for Audi S8 2003

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List of elements for Automatic A/C Wiring Diagram (3 of 3) for Audi S8 2003:

(2000)
(above left kick panel) g43
(behind center of lower radiator grill) outside air temperature sensor
(in plenum chamber e-box) motronic engine control module
(integral with coolant pump)
(on top center
1/+
2/-
A/c clutch
A/c clutch relay (on right front footwell e-box relay panel)
A/c control head
A/c pressure switch
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
Center vent position sensor (behind upper center of dash, on hvac assembly)
Computer data lines system
Coolant pump (left rear of engine compt)
D10
D11
D12
E10
E11
E12
Fuse 4 (st3) 10a
Fuse 5 (st3) 10a
Fuse 7 (st3) 15a
Fuse 8 (st3) 10a
Fuse panel (right front footwell)
G43 (above left kick panel)
Hot at all times
Hot in run and start
Instrument cluster combination processor
Interior lights system
Left heat regulating valve
Nca
Of middle defrost vent) sunlight photo sensor
Right center vent switch (behind upper right center of dash, on vent)
Right heat regulating valve
Solid state
T16a
T32b
Wiper/washer system

ANTI-THEFT

Power Door Locks Wiring Diagram (1 of 2) for Audi S8 2003

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List of elements for Power Door Locks Wiring Diagram (1 of 2) for Audi S8 2003:

2002-03
50b
86s
Acc
Alarm
All times
Antenna
B12
Battery
Central locking/ alarm system/ interior light delay control module (at left side of luggage compt, near wheelwell)
Data link connector
Driver's side door lock switch
Driver's side lock cylinder lock switch
Exterior lights system
Fuse 3 (st5) 15a (or 10a)
Fuse 4 (st5) 10a
Fuse 5 (st5) 15a
Fuse panel
G43 (above right
G44 (above left
G44 (above left kick panel)
G59 (near left taillight)
G98 (in rear
Hood alarm switch (on right rear of engine compt)
Horn
Hot at
Hot in run
Ignition switch
Instrument cluster combination processor
Interior lights system
Interior lights system, power windows system
Key switch
Kick panel)
Lid harness)
Memory systems
Nca
Off
Parking aid control module (below cd changer unit, on left side of luggage compartment)
Power windows system
Radio
Red
Right footwell e-box auxiliary fuse & relay panel
Start
Starter
Starting interlock relay
T10o
T12
T16
T26b
Telephone/ telematic control module
Trunk lid alarm switch (in trunk lid latch)
Trunk lock alarm/ central locking switch (on trunk lock cylinder housing)
Trunk release system

Power Door Locks Wiring Diagram (2 of 2) for Audi S8 2003

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List of elements for Power Door Locks Wiring Diagram (2 of 2) for Audi S8 2003:

All times
Blower motor
Driver's side door contact switch (on door latch mechanism)
Fuse 1 (st5) 10a
Fuse panel
G43 (above right
G44 (above left
G59 (near left taillight)
Hot at
Interior monitoring sensor
Interior monitoring sensors (ultra sound) control module (left side of luggage compt)
Interior monitoring switch
Interior monitoring transmitter
Kick panel)
Left door warning light
Motor blower
Passenger's side door contact switch (on door latch mechanism)
Right door warning light
T4aa
T4ab

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram for Audi S8 2003

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List of elements for Computer Data Lines Wiring Diagram for Audi S8 2003:

2002-03
A/c control head
Abs control module (below left left side of dash)
Air bag control module (below center of dash, on transmission tunnel)
B14
C24
Central locking/ alarm system/ interior light delay control module (at left side of luggage compt, near wheelwell)
Data link connector
Fuse 1 (st3) 15a
Fuse 9 (st1) 10a
Fuse panel
G44 (above left kick panel)
Headlight beam adjusting control module (at base of right "b" pillar)
Hot at all times
Hot in run
Instrument cluster combination processor
Motronic engine control module (in plenum chamber e-box)
Multi-function steering wheel control module (on relay panel)
Navigation control unit w/ cd
Parking aid control module (below cd changer unit, on left side of lugg compt)
Radio
T16
T32a
T8n
Telephone/ telematic control module (front of lugg compt, bottom of parcel shelf)
Tire pressure monitoring control module
Transmission control module (in plenum chamber e-box)
Ultra sound sensors control module (left side of luggage compt)

High/Low Bus Wiring Diagram for Audi S8 2003

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List of elements for High/Low Bus Wiring Diagram for Audi S8 2003:

A/c control head
Abs control module (below left side of dash)
C17
C18
Instrument cluster
Motronic engine control module (in plenum chamber e-box)
Multi-function steering wheel control module (on relay panel)
Navigation control module w/ cd
Parking aid control module (below cd changer unit, on left side of lugg compt)
Radio
Steering angle sensor
T10f
T32a
T6ap
T6h
Telephone/ telematics control module (at front of luggage compt, on bottom of parcel shelf)
Transmission control module (in plenum chamber e-box)

COOLING FAN

Cooling Fan Wiring Diagram for Audi S8 2003

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List of elements for Cooling Fan Wiring Diagram for Audi S8 2003:

(2000)
60a
A/c control head
A/c refrigerant high pressure switch (below left headlight)
A/c system
C17
C18
C24
Central electric panel
Computer data lines system
Coolant fan
Coolant fan control relay (on relay panel)
Coolant fan control series resistance (lower left front of engine compt)
Coolant fan control thermal switch (lower right side of radiator)
Coolant fan fuse
D10
Data link connector
E12
Fuse 4 (st2) 5a
Fuse panel (right front footwell)
G44 (above left kick panel)
G79 (on filler neck)
Hot at all times
Hot w/ load reduction relay energized
Instrument cluster combination processor
Motronic engine control module (in plenum chamber e-box)
Red
Second speed coolant fan control relay (on relay panel)
Solid state
T16a
T32b
Third speed coolant fan control relay (below left side of dash)

CRUISE CONTROL

Cruise Control Wiring Diagram for Audi S8 2003

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List of elements for Cruise Control Wiring Diagram for Audi S8 2003:

10a
Anti-lock brakes system
Brakelight switch (above brake pedal, on bracket)
Computer data lines system
Cruise control switch
Exterior lights system
Fuse 1 (st3) 15a
Fuse 10 (st4) 10a
Fuse 5a
Fuse 6 (st3) 10a
Fuse 9 (st2) 10a
Fuse panel (right front footwell)
G43 (above right kick panel)
Hot at all times
Hot in run or start
Instrument cluster
Motronic engine control module (in plenum chamber e-box)
Plenum chamber e-box relay & fuse panel (in plenum chamber e-box)
Speedometer vehicle speed sensor (on left side of transmission)
T32
T32a
T32b
Throttle position sensor/ accelerator pedal position sensor (above accelerator pedal)
Throttle valve control module (on throttle body, left front of eng)

DEFOGGERS

Defoggers Wiring Diagram for Audi S8 2003

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List of elements for Defoggers Wiring Diagram for Audi S8 2003:

75x
A/c control head
Central electric panel
Defogger switch
Driver's side heated mirror
Fuse 1 (st2) 10a
Fuse 6 (st2) 30a
Fuse panel
G43 (above right kick panel)
G44 (above left kick panel)
G75 (on right rear pillar, near filler neck)
Hot at all times
Hot in run
Load reduction relay
Passenger's side heated mirror
Rear window defogger heat element
S1/31
Solid state

ELECTRONIC POWER STEERING

Electronic Power Steering Wiring Diagram for Audi S8 2003

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List of elements for Electronic Power Steering Wiring Diagram for Audi S8 2003:

(1997-99)
(2000-03)
G43 (above right kick panel)
Hot at all times
Ignition switch
Instrument cluster
Off
Run
Servotronic control module (right front footwell e-box relay panel)
Servotronic solenoid valve
Speed signal
Start
T26
T32b

Power Steering Column Wiring Diagram for Audi S8 2003

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List of elements for Power Steering Column Wiring Diagram for Audi S8 2003:

86s
Fuse 9 (st5) 20a
Fuse panel (right front footwell)
G44 (above left kick panel)
Hot at all times
Ignition switch
Key-in ignition switch
Red
Steering column adjustment axial motor
Steering column adjustment switch
Steering column adjustment vertical motor
Steering column/ belt height adjustment control module (below left front seat)

ENGINE PERFORMANCE

4.2L

4.2L, Engine Performance Wiring Diagram (1 of 4) for Audi S8 2003

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List of elements for 4.2L, Engine Performance Wiring Diagram (1 of 4) for Audi S8 2003:

(above right kick panel) g43
Air conditioning system
Anti-lock brakes system
Brake light switch (above brake pedal, on bracket)
Computer data lines system
Cruise control system
Data link connector (rapid data transfer)
Exterior lights system
Fuse panel (at right front of foot- well)
Fuse s10 (st4) 10a
Fuse s102 5a
Fuse s117 20a
Fuse s130 50a
Fuse s2 (st4) 30a
Fuse s9 (st2) 10a
G43 (above right kick panel)
Hot at all times
Hot in start and run
Instrument cluster system
Mass air flow sensor (inside upper air cleaner housing)
Motronic engine control module (in plenum chamber e-box)
Plenum chamber e-box relay & fuse panel (in plenum chamber e-box)
Red
Secon- dary air injection pump relay
Secondary air injection pump motor
Throttle position sensor (on throttle body)
Transmission control module (tcm) (in plenum chamber e-box)

4.2L, Engine Performance Wiring Diagram (2 of 4) for Audi S8 2003

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List of elements for 4.2L, Engine Performance Wiring Diagram (2 of 4) for Audi S8 2003:

(on front of intake manifold) intake manifold changed over valve
(on right side of eng compt, near air cleaner assembly) evaporative emission canister purge regulator valve
Camshaft position sensor (cmp) (on rear of left cylinder head)
Camshaft position sensor (cmp) 2
Engine coolant temperature sensor (on rear of right cylinder head)
G269 (in instrument panel harness)
Heated oxygen sensor (ho2s) (near rear of right exhaust manifold)
Heated oxygen sensor (ho2s) 2 (near rear of left exhaust manifold)
Intake manifold tuning valve 2
Leak detection pump (ldp)
Left electro- hydraulic engine solenoid valve
Nca
Oxygen sensor (behind twc) (in right exhaust pipe, downstream from three way catalytic converter)
Oxygen sensor 2 (behind twc) (in left exhaust pipe, downstream from three way catalytic converter)
Red
Right electro- hydraulic engine solenoid valve
Secondary air injection solenoid valve

4.2L, Engine Performance Wiring Diagram (3 of 4) for Audi S8 2003

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List of elements for 4.2L, Engine Performance Wiring Diagram (3 of 4) for Audi S8 2003:

87a
87f
Camshaft adjustment valve 1
Camshaft adjustment valve 2
Central electric panel
Distributor ignition capacitor
Dti
Fuel gauge sender
Fuel pump (in right side of fuel tank, accessible from right front of trunk)
Fuel pump relay
Fuse panel (at right front of foot- well)
Fuse s1 (st4) 20a
Fuse s3 (st4) 20a
G17 (on intake manifold)
G269 (in instrument panel harness)
G43 (above right kick panel)
G49 (near fuel pump)
Hot at all times
Ignition coil 1
Ignition coil 2
Ignition coil 3
Ignition coil 4
Ignition coil 5
Ignition coil 6
Ignition coil 7
Ignition coil 8
Nca
Plug spark
Spark plug

4.2L, Engine Performance Wiring Diagram (4 of 4) for Audi S8 2003

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List of elements for 4.2L, Engine Performance Wiring Diagram (4 of 4) for Audi S8 2003:

Anti-lock brakes system
Central electric panel
Cruise control system
Engine speed sensor (on left front of transmission)
Fuel gauge sender 2 (in left side of fuel tank, accessible from left front of trunk)
Fuel injectors
Fuse s113 15a
Fuse s116 20a
Hot at all times
Instrument cluster
Instrument cluster combination processor
Knock sensor 1 (under intake manifold, below right cylinder head)
Knock sensor 2 (on left side of eng block)
Motronic engine control module (in plenum chamber e-box)
Nca
Plenum chamber e-box relay & fuse panel (in plenum chamber e-box)
Red
T32
Throttle valve control module

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Audi S8 2003

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List of elements for Back-up Lamps Wiring Diagram for Audi S8 2003:

B18
Fuse 6 (st3) 10a
Fuse panel (right front footwell)
G98 (in rear lid harness)
Hot in run or start
Left back-up light
Mirror memory control module (if equipped) (base of left "b" compt)
Multi-function transmission range switch (left side of transmission)
Navigation control unit (if equipped)
Nca
Parking aid control module (if equipped) (left side of luggage compt)
Reverse
Right back-up light

Exterior Lamps Wiring Diagram, with DRL (1 of 2) for Audi S8 2003

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List of elements for Exterior Lamps Wiring Diagram, with DRL (1 of 2) for Audi S8 2003:

(above right kick panel)
Brake
Daytime running lights switch-on relay (on right front footwell e-box relay panel)
Emergency flasher relay (on relay panel)
Fuse 1 (st1) 5a
Fuse 1 200a
Fuse 2 (st1) 5a
Fuse panel (right front footwell)
G43
G43 (above right kick panel)
G44 (above left kick panel)
G59 (near left taillight)
G60 (near right taillight)
G98 (in rear lid harness)
Head
Headlights system
High mount brake light
Hot at all times
Ignition switch
Lamp control module (on right front footwell e-box relay panel)
Left
Left front side turn light
Left front turn/ side marker light
Left headlamp assembly
Left rear side marker light
Left tail light
Left taillamp assembly
Light switch
Mark
Off
Park
Red
Right
Run
Start
T14
Tail
Turn

Exterior Lamps Wiring Diagram, with DRL (2 of 2) for Audi S8 2003

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List of elements for Exterior Lamps Wiring Diagram, with DRL (2 of 2) for Audi S8 2003:

10a
Abs control module (below left side of dash)
Airbag control module (below left side of dash)
Brake
Brake light switch (above pedal, on bracket)
Brake warn
Central locking/ alarm system/interior light delay module (left side of luggage compt, near wheelwell)
Emergency flasher switch
Fuse 1 (st3) 15a
Fuse 10 (st4) 10a
Fuse 7 (st1) 15a
Fuse 8 (st2) 10a
Fuse 9 (st2) 10a
Fuse panel (right front footwell)
G43 (above right kick panel)
G44 (above left kick panel)
G60 (near right taillight)
G98 (in rear lid harness)
Hot at all times
Hot in run or start
Hot w/ load reduction relay energized
Instrument cluster
Interior lights system
Left turn
License plate lights
Mark
Motronic engine control module (in plenum chamber e-box)
Park
Red
Right front side turn light
Right front turn/ side marker light
Right headlamp assembly
Right rear side marker light
Right tail light
Right taillamp assembly
Right turn
T10
T16
T32
T32a
Tail
Telephone/ telematic control module (if equipped) (front of luggage compt)
Turn

Exterior Lamps Wiring Diagram, without DRL (1 of 2) for Audi S8 2003

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List of elements for Exterior Lamps Wiring Diagram, without DRL (1 of 2) for Audi S8 2003:

(above right kick panel)
Brake
Emergency flasher relay (on relay panel)
Fuse 1 (st1) 5a
Fuse 1 200a
Fuse 2 (st1) 5a
Fuse 3 (st2) 5a
Fuse panel (right front footwell)
G43
G44 (above left kick panel)
G59 (near left taillight)
G60 (near right taillight)
G98 (in rear lid harness)
Head
Headlights system
High mount brake light
Hot at all times
Interior lights system
Lamp control module (on right front footwell e-box relay panel)
Left
Left front side turn light
Left front turn/ side marker light
Left headlamp assembly
Left rear side marker light
Left tail light
Left taillamp assembly
License plate lights
Light switch
Mark
Off
Park
Red
Right
T14
Tail
Turn

Exterior Lamps Wiring Diagram, without DRL (2 of 2) for Audi S8 2003

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List of elements for Exterior Lamps Wiring Diagram, without DRL (2 of 2) for Audi S8 2003:

10a
Abs control module (below left side of dash)
Airbag control module (below left side of dash)
Brake
Brake light switch (above pedal, on bracket)
Brake warn
Central locking/ alarm system/interior light delay module (left side of luggage compt, near wheelwell)
Emergency flasher switch
Fuse 1 (st3) 15a
Fuse 10 (st4) 10a
Fuse 7 (st1) 15a
Fuse 8 (st2) 10a
Fuse 9 (st2) 10a
Fuse panel (right front footwell)
G43 (above right kick panel)
G44 (above left kick panel)
G60 (near right taillight)
G98 (in rear lid harness)
Hot at all times
Hot in run or start
Hot w/ load reduction relay energized
Instrument cluster
Interior lights system
Left turn
Mark
Motronic engine control module (in plenum chamber e-box)
Park
Red
Right front side turn light
Right front turn/ side marker light
Right headlamp assembly
Right rear side marker light
Right tail light
Right taillamp assembly
Right turn
T10
T16
T32
T32a
Tail
Telephone/ telematic control module (if equipped) (front of luggage compt)
Turn

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 2) for Audi S8 2003

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List of elements for Ground Distribution Wiring Diagram (1 of 2) for Audi S8 2003:

(2000)
(2000-01)
(2001-03)
(2002-03 w/ bose)
(2002-03)
A/c control head
Aerial selection control unit telematic control head telephone/telematic control unit
Air quality sensor foglight control module headlight adjuster hood alarm switch left washer nozzle heater right washer nozzle heater
Airbag control module drivers side crash sensor drivers side head airbag igniter left front a pillar microswitch passengers side airbag key switch passengers side crash sensor passengers side head airbag igniter right front a pillar microswitch
Amplifier amplifier shield
Anti-slip switch ashtray light asr/esp button center vent position sensor coin holder illumination cup holder illumination emergency flasher switch fog light switch parking aid button parking brake warning light switch rear foglight switch rear seat outlet light (center) rear seat outlet light (left) rear seat outlet light (right) storage tray illumination tiptronic switch
Battery
Board computer function selector switch i central electric panel cigarette lighter daytime running lights switch-on relay lamp control module load reduction relay sevotronic control module wiper/washer intermittent relay
Brake pad wear element coolant fan control thermal switch headlight beam adjusting control module headlght washer pump right front turn/side marker light right headlamp assembly right side turn signal light tire pressure monitoring control module windshield washer pump
Combustion air blower capacitor drivers side rear airbag igniter front map/reading light switch high mount brake light left rear heated seat regulating switch left rear heated seat temperature sensor left rear seat backrest heater passengers side rear airbag igniter power sunroof control module rear window shade control module right front make-up mirror light right rear ashtray light right rear door contact switch right rear door opener light right rear heated seat regulating switch right rear heated seat temperature sensor right rear power window control module right rear seat backrest heater
Drivers heated seat adjuster entry & floor light relay glove box compartment light glove box compartment light switch interior & map/reading light relay mirror fold-away function control module passengers heated seat adjuster passengers heated seat temperature sensor passengers seat backrest heating element passengers seat side bolster heater passenger side airbag key switch rear cigarette lighter rear headrest adjust switch rear window shade switch storage tray illumination
Fresh air blower
G43 (above right kick panel)
G51 (right side of luggage compt)
G60 (near right taillight)
G79 (on filler neck)
Ignition coils motronic engine control module oil level thermal sensor secondary air injection pump motor
Left instrument panel vent illumination right instrument panel vent illumination
Left rear headrest lower relay left rear seat headrest adjustment switch left rear seat lumbar height adjustment switch right rear headrest lower relay right rear seat headrest adjustment switch right rear seat lumbar height adjustment switch
Luggage compartment light right rear side marker light right taillamp assembly
Multi-function transmission range switch transmission control module vehicle speed sensor (speedometer)
Passengers door contact switch passengers door opener light passengers heated side mirror right front power window control module
Power antenna
Radio radio shields telephone shields

Ground Distribution Wiring Diagram (2 of 2) for Audi S8 2003

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List of elements for Ground Distribution Wiring Diagram (2 of 2) for Audi S8 2003:

(2000 w/o stability)
(2000-01)
(2001-03)
(2002-03)
(w/ bose)
(w/ memory)
A/c pressure switch engine coolant level warning switch left front turn/side marker light left headlamp assembly parking aid control module
Abs control module
Abs shield coolant fan left side turn signal light
Alarm horn auto dimmer inside mirror central locking/alarm system/ interior light delay control module front interior light switch garage door opener module left front make-up mirror light left luggage compartment light left rear make-up mirror light switch left rear side marker light left taillamp assembly right rear make-up mirror light switch ultra sound sensors control module
Board computer function selector switch ii engine coolant temperature sensor fuel gauge sensor instrument cluster outside air temperature sensor
Brake fluid level warning switch data link connector emergency flasher relay horn button instrument cluster kick down switch multi-function steering wheel control module navigation control unit steering angle sensor steering wheel control unit windshield wiper motor
Cd changer unit radio
Combustion air blower capacitor passengers belt height adjustment switch passengers seat adjustment switches passengers seat lumbar switch
Deck lid central locking system motor left backup light left rear fog light left tail light license plate lights right backup light right tail light trunk lid alarm switch trunk lock alarm/central locking switch
Drivers backrest heating element drivers heated seat temperature sensor drivers seat side bolster heater left front a pillar microswitch left rear ashtray light left rear door contact switch left rear door opener light left rear power window control module memory mirror control module steering column adjustment switches steering column/belt adjustment control module
Drivers belt height adjustment switch drivers seat adjustment switches drivers seat lumbar switch passengers seat adjustment switches
Drivers door contact switch drivers door lock switch drivers door lock cylinder switch drivers door opener light drivers heated side mirror heated door lock control module left front power window control module left front window switch left rear window console switch mirror selector switch right front window switch right rear window console switch window lockout switch
Fresh air blower abs control module
Fuel pump
G140 (in passenger seat harness)
G17 (on intake manifold)
G269 (in instrument panel harness)
G348 (in front bumper harness)
G352 (in rear bumper harness)
G44 (above left kick panel)
G45 (behind center of dash)
G49 (near fuel pump)
G59 (near left taillight)
G75 (on right rear pillar, near filler neck)
G98 (in rear lid harness)
High tone horn low tone horn
Ignition coils
Left front center parking aid sensor left front parking aid sensor parking aid control module right front center parking aid sensor right front parking aid sensor
Left front fog light right front fog light
Left rear center parking aid sensor left rear parking aid sensor parking aid control module right rear center parking aid sensor right rear parking aid sensor
Rear window defogger rear window defogger/antenna right rear bass speaker

HEADLIGHTS

Headlamp Beam Adjustment Wiring Diagram for Audi S8 2003

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List of elements for Headlamp Beam Adjustment Wiring Diagram for Audi S8 2003:

(above right kick panel)
(below
2000-
2002-
Abs control module
Data link connector
Fuse 1 (st3) 15a
Fuse panel (right front footwell)
G43
Head
Headlight beam adjusting control module (at base of right "b" pillar, behind trim)
Hot at all times
Hot in run
Hot in run or start
Ignition switch
Instrument cluster
Left front level control system sensor
Left headlight beam adjusting motor
Left side of dash) (w/ edl)
Light switch
Off
Park
Right front level control system sensor
Right headlight beam adjusting motor
Run
Start
T14
T32
T32b
Vehicle speed signal

Headlamps & Fog Lamps Wiring Diagram, with DRL for Audi S8 2003

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List of elements for Headlamps & Fog Lamps Wiring Diagram, with DRL for Audi S8 2003:

(above
(above right kick panel)
Daytime running lights switch-on relay (on right front footwell e-box auxiliary fuse & relay panel)
Exterior lights system
Fog
Fog light switch
Front/rear fog light control module (on right front footwell e-box relay panel)
Fuse 1 (st1) 5a
Fuse 1 (st3) 15a
Fuse 1 200a
Fuse 2 (st1) 5a
Fuse 3 (st1) 15a
Fuse 4 (st1) 15a
Fuse 5 (st1) 10a
Fuse 5 (st2) 15a
Fuse 6 (st1) 10a
Fuse panel (right front foot- well)
Fuse panel (right front footwell)
G43
G43 (above right kick panel)
G44 (above
G44 (above left kick panel)
G98 (in rear lid harness)
Head
Headlamp dimmer switch
High beam
Hot at all times
Hot in run or start
Hot w/ load reduction relay energized
Ignition switch
Illum
Instrument cluster
Interior lights system
Lamp control module (on right front footwell e-box relay panel)
Left fog light
Left headlamp assembly
Left kick panel)
Left rear fog light
Light switch
Low beam
Off
Park
Power distribution system (load reduction relay)
Rear fog light switch
Red
Right fog light
Right headlamp assembly
Right kick panel)
Run
Start
T14
T32
W/ high intensity gas discharge headlamps
W/o high intensity gas discharge headlamps
Wiper/ washer intermittent relay

Headlamps & Fog Lamps Wiring Diagram, without DRL for Audi S8 2003

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List of elements for Headlamps & Fog Lamps Wiring Diagram, without DRL for Audi S8 2003:

(above
Dimmer switch
Fog
Fog light switch
Front/rear fog light control module (on right front footwell e-box relay panel)
Fuse 1 (st3) 15a
Fuse 1 200a
Fuse 3 (st1) 15a
Fuse 4 (st1) 15a
Fuse 5 (st1) 10a
Fuse 5 (st2) 15a
Fuse 6 (st1) 10a
Fuse panel (right front footwell)
G43
G43 (above right kick panel)
G44 (above
G44 (above left kick panel)
G98 (in rear lid harness)
Head
Headlamp
High beam
Hot at all times
Hot in run or start
Hot w/ load reduction relay energized
Ignition switch
Illum
Instrument cluster
Interior lights system
Lamp control module (on right front footwell e-box relay panel)
Left fog light
Left headlamp assembly
Left kick panel)
Left rear fog light
Light switch
Load reduction relay
Low beam
Off
Park
Rear fog light switch
Red
Right fog light
Right headlamp assembly
Right kick panel)
Run
Start
T14
T32
W/ high intensity gas discharge headlamps
W/o high intensity gas discharge headlamps
Wiper/ washer intermittent relay (on right front footwell e-box relay panel)

HORN

Horn Wiring Diagram, with Telematics for Audi S8 2003

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List of elements for Horn Wiring Diagram, with Telematics for Audi S8 2003:

Central electric panel
Dual horn relay
Fuse 1 (204) 200a
Fuse 8 (st1) 15a
Fuse panel (at right front footwell)
G44 (above left kick panel)
High tone horn
Horn button
Hot at all times
Ignition switch
Light switch
Low tone horn
Micro central electric panel (in right front footwell e-box)
Off
Power distribution system
Red
Run
S1/30ah
S1/71
S1/75
S2/87h
Start
Steering wheel
T5b
Telephone/ telematic control module (front of luggage compt, at bottom of parcel shelf)

Horn Wiring Diagram, without Telematics for Audi S8 2003

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List of elements for Horn Wiring Diagram, without Telematics for Audi S8 2003:

Central electric panel
Dual horn relay
Fuse 1 (204) 200a
Fuse 8 (st1) 15a
Fuse panel (at right front footwell)
G44 (above left kick panel)
High tone horn
Horn button
Hot at all times
Ignition switch
Light switch
Low tone horn
Off
Power distribution system
Red
Run
S1/30ah
S1/71
S1/75
S2/87h
Start
Steering wheel
T5b

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 3) for Audi S8 2003

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List of elements for Instrument Cluster Wiring Diagram (1 of 3) for Audi S8 2003:

(at right front footwell) fuse panel
(below center of dash) airbag control module
(in right side of fuel tank)
(left side of engine block) fuel gauge sensor 2
(turn signal switch)
Abs control module (w/edl) (below left side of dash)
Abs warning
Air bag mil
Anti-theft immobilizer
Anti-theft immobilizer induction coil
Brake fluid level
Brake fluid warning switch (on brake fluid reservoir)
Brake pad wear ind
Combination processor
Computer data lines system
Data link connector
Digital clock
Ect gauge
Engine coolant temperature sensor
Epc warning
Exterior lights system
Fuel gauge
Fuel gauge sensor
Fuel reserve warning
Fuse 1 (st3) 15a
G269 (in instru- ment panel harness)
G269 (in instrument panel harness)
G43 (above right kick panel)
G44 (above left kick panel)
Gen warning
Generator
Headlights system
Hot at all times
Ignition switch
Instrument cluster
Left turn signal
Light switch
Off
Oil pressure switch (right side of engine)
Oil pressure warning
Outside air temp
Outside air temperature sensor
Parking brake
Parking brake warning light switch (below brake lever)
Red
Right turn signal
Run
Seat belt warning
Start
T32
T32/1
T32/10
T32/12
T32/14
T32/15
T32/17
T32/18
T32/19
T32/2
T32/20
T32/22
T32/23
T32/24
T32/26
T32/27
T32/28
T32/29
T32/3
T32/30
T32/31
T32/32
T32/4
T32/5
T32/8
T32/9
T32a
T32a/1
T32a/11
T32a/12
T32a/13
T32a/14
T32a/15
T32a/16
T32a/17
T32a/18
T32a/2
T32a/20
T32a/21
T32a/22
T32a/23
T32a/24
T32a/27
T32a/28
T32a/31
T32a/32
T32a/5
T32a/6
T3ar
Traction control
Trailer operation

Instrument Cluster Wiring Diagram (2 of 3) for Audi S8 2003

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List of elements for Instrument Cluster Wiring Diagram (2 of 3) for Audi S8 2003:

(at right front footwell)
86s
Board computer function selector switch
Board computer function selector switch ii
Fuse 4 (st3) 10a
Fuse 6 (st1) 10a
Fuse 8 (st4) 5a
Fuse panel
G269 (in instru- ment panel harness)
G43 (above right kick panel)
G79 (on filler neck)
Hot at all times
Hot with high beams on
Ignition switch
Interior lights system
Key switch
Left brake pad wear indicator element
Nca
Oil level thermal sensor (sri)
Red
Right brake pad wear indicator element

Instrument Cluster Wiring Diagram (3 of 3) for Audi S8 2003

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List of elements for Instrument Cluster Wiring Diagram (3 of 3) for Audi S8 2003:

(at base of right "b" pillar) headlight beam adjusting control module
(on left side of transmission) speedometer vehicle speed sensor
(on right front footwell e-box relay panel)
(on right front footwell e-box relay panel) lamp control module
Abs control module (w/edl) (below left side of dash)
Brake warning
Central locking/alarm system/interior light delay control module (left side of luggage compt)
Combination processor
Coolant level/temp
Cooling fans system
Driver side door contact switch (on driver door latch mechanism)
Engine coolant level warning switch (bottom of coolant reservoir)
G43 (above right kick panel)
G44 (above left kick panel)
G98 (in rear lid harness)
Headlight high beam
Hood alarm switch (right rear of engine compt)
Instrument cluster
Interior lights system
Left front "a" pillar micro- switch
Nca
Park light
Red
Speedometer
Suppressor filter
T12
T16
T32b
T32b/10
T32b/11
T32b/14
T32b/15
T32b/16
T32b/18
T32b/19
T32b/2
T32b/20
T32b/23
T32b/24
T32b/25
T32b/26
T32b/27
T32b/28
T32b/29
T32b/3
T32b/30
T32b/31
T32b/5
T32b/7
T32b/9
Trunk lid alarm switch (in trunk lid latch)
Washer fluid level
Wiper/washer intermittent relay
Wiper/washer system

INTERIOR LIGHTS

Interior Lights Wiring Diagram (1 of 3) for Audi S8 2003

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List of elements for Interior Lights Wiring Diagram (1 of 3) for Audi S8 2003:

(above left kick panel) g44
(above right kick panel) g43
(at right front footwell) fuse panel
A/c control head
Ashtray light
Asr/esp button
Board computer function selector switch ii
Center instrument panel vent illumination
Cigarette lighter
Coin holder illumination
Combination processor
Cup holder illumination
Driver seat memory program switch
Emergency flasher switch
Exterior lights system
Fog light switch
Fuse 1 (st1) 5a
Fuse 1 (st5) 10a
Fuse 2 (st1) 5a
Fuse 2 (st5) 10a
Fuse 3 (st2) 5a
Fuse panel (at right front foot- well)
G269 (in instrument panel harness)
G43 (above right kick panel)
G44 (above left kick panel)
Head
Heated driver's seat adjuster
Heated passenger's seat adjuster
Hot at all times
Hot w/ load reduction relay energized
Instrument cluster
Left instrument panel vent illumination
Light switch
Mirror selector switch
Off
Park
Parking aid button
Passenger seat memory program switch
Radio
Rear fog light switch
Rear seat center outlet light
Rear seat left outlet light
Rear seat right outlet light
Rear window shade switch
Right front map/reading light and left front reading light
Right instrument panel vent illumination
Storage tray illumination
T10u
T32a
T32b
T5n
Tiptronic switch

Interior Lights Wiring Diagram (2 of 3) for Audi S8 2003

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List of elements for Interior Lights Wiring Diagram (2 of 3) for Audi S8 2003:

(near left taillight) g59
E-box relay panel
Entry & floor light relay
Front interior light
Fuse 3 (st5) 10a
Fuse 4 (st5) 10a
Fuse panel (at right front foot- well)
G43 (above right kick panel)
G44 (above left kick panel)
G59 (near left taillight)
G60 (near right taillight)
Glove box compartment light
Glove box compartment light switch
Glove box lock switch
Hot at all times
Hot in run and start
Interior and map reading light relay (on relay panel)
Left front make- up mirror light
Left front make-up mirror light switch
Left luggage compartment light
Left rear ashtray light
Left rear heated seat regulating switch
Left rear make- up mirror light
Left rear make-up mirror light switch
Luggage compartment light
Mirrors system
Nca
Rear cigarette lighter
Rear headrest adjust switch
Rear reading/courtesy light
Right front make- up mirror light
Right front make-up mirror light switch
Right rear ashtray light
Right rear heated seat regulating switch
Right rear make- up mirror light
Right rear make-up mirror light switch
Storage compartment illumination
T6aa
T6ac

Interior Lights Wiring Diagram (3 of 3) for Audi S8 2003

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List of elements for Interior Lights Wiring Diagram (3 of 3) for Audi S8 2003:

Central locking/alarm system/ interior light delay module (left side of luggage compt)
Combination processor
Driver's door lock switch
Driver's side door contact switch
Driver's side door opener light
Driver's side door warning light
G43 (above right kick panel)
G44 (above left kick panel)
Instrument cluster
Interior monitoring sensors control module
Left door central locking warning light
Left footwell light
Left front entry light
Left front window switch
Left rear console window switch
Left rear door contact switch
Left rear door opener light
Left rear door warning light
Left rear entry light
Left rear footwell light
Luggage compartment release switch
Passenger compartment monitoring switch
Passenger's door warning light
Passenger's side door contact switch
Passenger's side door opener light
Power windows system
Right door central locking warning light
Right foot- well light
Right front entry light
Right front window switch
Right rear console window switch
Right rear door contact switch
Right rear door opener light
Right rear door warning light
Right rear entry light
Right rear footwell light
T10o
T12
T16
T32b
Window lockout switch

MEMORY SYSTEMS

Driver"s Memory Seat Wiring Diagram (1 of 2) for Audi S8 2003

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List of elements for Driver"s Memory Seat Wiring Diagram (1 of 2) for Audi S8 2003:

Central locking/ alarm system/ interior light delay control module (left side of luggage compt)
Driver side door contact switch (on driver door latch mechanism, inside door)
Driver's seat backrest adjusting motor
Driver's seat fore/ aft adjusting motor
Driver's seat front height adjusting motor
Driver's seat headrest adjusting motor
Driver's seat rear height adjusting motor
G44 (above left kick panel)
Memory mirrors circuit
Memory seat control module (on bottom of left front seat)
Red
Steering column/ belt height control module (below left front seat)
T16

Driver"s Memory Seat Wiring Diagram (2 of 2) for Audi S8 2003

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List of elements for Driver"s Memory Seat Wiring Diagram (2 of 2) for Audi S8 2003:

Back- rest
Circuit breaker 44 30a
Driver's seat adjustment switch
Fore/ aft
Front height
Fuse 2 (st5) 10a
Fuse 3 (st5) 15a
Fuse panel (at right front footwell)
G44 (above left kick panel)
Head- rest
Hot at all times
Hot w/ load reduction relay energized
Memory program switch
Rear height
Red
Right front footwell e-box auxiliary fuse & relay panel

Memory Column & Belt Height Wiring Diagram for Audi S8 2003

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List of elements for Memory Column & Belt Height Wiring Diagram for Audi S8 2003:

86s
Circuit breaker 44 30a
Driver's belt height adjustment switch
Driver's memory seat circuit
Fuse 3 (st5) 15a
Fuse 9 (st5) 20a
Fuse panel (at right front footwell)
G44 (above left kick panel)
Hot at all times
Ignition switch
Key-in ignition switch
Left seat belt motor
Memory mirror control module (base of left "b" pillar)
Memory program switch
Memory seat control module (bottom of left front seat)
Red
Right front footwell e-box auxiliary fuse & relay panel
Steering column adjustment axial motor (right side of steering column)
Steering column adjustment switch
Steering column adjustment vertical motor (left side of steering column)
Steering column/ belt height control module (below left front seat)

Memory Mirrors Wiring Diagram for Audi S8 2003

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List of elements for Memory Mirrors Wiring Diagram for Audi S8 2003:

(above left kick panel) g44
(above right kick panel) g43
A10
B10
Back-up lights
De- fog
Driver's side mirror
Fold- away
Fuse 1 (st2) 10a
Fuse 2 (st5) 10a
Fuse 3 (st5) 15a
Fuse panel (at right front footwell)
G43 (above right kick panel)
G44 (above left kick panel)
Hot at all times
Hot w/ load reduction relay energized
Memory mirror control module (at base of left "b" pillar, behind trim)
Memory seat control module
Mirror adjustment switch
Mirror fold-away control module (if equipped) (on right front footwell e-box relay panel)
Passenger's side mirror
Position
Steering column/ belt height adjustment control module

Passenger"s Memory Seat Wiring Diagram (1 of 2) for Audi S8 2003

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List of elements for Passenger"s Memory Seat Wiring Diagram (1 of 2) for Audi S8 2003:

Driver's seat memory program switch
G44 (above left kick panel)
Passenger's memory seat control module (on bottom of right front seat)
Passenger's seat backrest adjusting motor
Passenger's seat fore/ aft adjusting motor
Passenger's seat front height adjusting motor
Passenger's seat headrest adjusting motor
Passenger's seat rear height adjusting motor
Passenger's side door contact switch (on right front latch mechanism, inside door)
Red

Passenger"s Memory Seat Wiring Diagram (2 of 2) for Audi S8 2003

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List of elements for Passenger"s Memory Seat Wiring Diagram (2 of 2) for Audi S8 2003:

Back- rest
Circuit breaker 80 30a
Fore/ aft
Front height
Fuse 2 (st5) 10a
Fuse 3 (st5) 15a
Fuse panel (at right front footwell)
G44 (above left kick panel)
Head- rest
Hot at all times
Hot w/ load reduction relay energized
Passenger's seat adjustment switch
Passenger's seat memory program switch
Rear height
Red
Right front footwell e-box auxiliary fuse & relay panel

NAVIGATION

Navigation Wiring Diagram for Audi S8 2003

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List of elements for Navigation Wiring Diagram for Audi S8 2003:

(at right front footwell)
Board computer function selector switch ii
Combination processor
Data link connector (rapid data transfer) (below left side of dash)
Exterior lights system
Fuse 5 (st4) 5a
Fuse 6 (st2) 5a
Fuse 6 (st4) 10a
Fuse panel
G269 (in instrument panel harness)
G44 (above left kick panel)
Hot at all times
Hot in run or start
Instrument cluster
Interior lights system
Multi- function transmission range switch (on left side of transmission)
Navigation control unit
Navigation system antenna
Nca
Radio
Suppressor filter
T10u
T16a
T32a
T32b
T6ap
T8m
T8n
Telephone transceiver (if equipped)
Telephone/telematic control module (if equipped) (at left front of luggage compt, on bottom of parcel shelf)
W/ telematic
W/ telephone

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 4) for Audi S8 2003

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List of elements for Power Distribution Wiring Diagram (1 of 4) for Audi S8 2003:

50b
86s
A/c control head, instrument multi-function parking aid control module, instrument cluster, solar cell separation relay, multi- function steering wheel control module, tire pressure monitor control module
A34
Abs control module (w/ stability control)
Abs control module (without stability control)
Abs solenoid valve relay, abs return flow pump relay
Battery
Brake light switch
Central electric panel
Central locking/ alarm system/ interior light delay control module, multi-function transmission range switch
Cigarette lighter
Connector tv1
Connector tv2
Coolant pump, left/right heat regulating valve
D50/a32
Data link connector
Daytime running lights switch on relay
Daytime running lights switch on relay, front/ rear fog light control module
Dual horn relay
Dual horn relay 2
E20/a32
Emergency flasher switch
Fuse 15a
Fuse 15a (or 5a)
Fuse 200a
Fuse 20a
Fuse 25a
Fuse 3 (st3) 15a
Fuse 4 (st3) 10a
Fuse 6 (st4) 10a
Fuse 60a
Fuse 7 (st1) 15a
Fuse 7 (st2) 5a
Fuse 7 (st3) 15a
Fuse 8 (st1) 15a
Fuse 9 (st1) 10a
Fuse 9 (st2) 10a
Fuse 9 (st4) 25a
Fuse panel
G43 (above right kick panel)
Ignition switch
Instrument cluster, central locking/ alarm system/ interior light delay control module, radio, steering column/belt height control module
Interior lights system
Key-in ignition switch
Left/right rear head rest adjustment switch, left/right rear head rest lower relay, left/right rear seat lumbar support height adjustment switch
Left/right rear seat regulating switch
Load reduction relay
Low/high tone horns
Motronic engine control module
Navigation control unit
Off
Plenum chamber e-box relay & fuse panel
Radio, left rear woofer, power antenna, antenna selection control module
Red
Red red
Relay & fuse panel
Right footwell e-box auxiliary fuse & relay panel
Run
S1/
S1/ 30ah
S2/ 87h
S3/
Start
Starter
Starting interlock relay
Steering angle sensor
Steering wheel control unit
Telephone transceiver, telephone/ telematic control module
To central electric panel (diagram 2 of 4)
To fuse 6 (st3) (diagram 3 of 4)
To light switch (diagram 2 of 4)
Transmission control module
Voltage regulator/ generator
Voltage regulator/ generator, instrument cluster, headlight adjusting beam control module
Wiper/washer intermittent relay

Power Distribution Wiring Diagram (2 of 4) for Audi S8 2003

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List of elements for Power Distribution Wiring Diagram (2 of 4) for Audi S8 2003:

2001-03
75x
87f/ dti
A from central electric b panel (diagram c 1 of 4)
A37
A51
Central electric panel
Daytime running lights switch on relay
E107
E108
E116
Evaporative emission canister purge regulator valve, intake change-over valve, camshaft adjustment valves 1 & 2, intake manifold tuning valve 2, left/right electro- hydraulic engine mount solenoid valves, secondary air injection solenoid valve, secondary air injection pump relay, mass air flow sensor
Fog light switch, rear fog light switch, front/rear fog light control module
From ignition switch (diagram 1 of 4)
Front/rear foglight control module
Fuel injectors
Fuel pump
Fuel pump relay
Fuse 1 (st1) 5a
Fuse 1 (st4) 20a
Fuse 2 (st1) 5a
Fuse 2 (st4) 30a
Fuse 20a
Fuse 3 (st1) 15a
Fuse 3 (st2) 5a
Fuse 3 (st4) 20a
Fuse 4 (st1) 15a
Fuse 5 (st1) 10a
Fuse 5 (st2) 15a
Fuse 6 (st1) 10a
Fuse panel
Headlight beam adjustment control module, front/rear foglight control module
Headlight dimmer/ flasher switch
Heated oxygen sensors, leak detection pump
Ignition coils
Instrument cluster, automatic transmission console light, ashtray light, a/c control head, cigarette lighter light, license plate lights (w/o drl), left/right rear ashtray lights, glove compartment light, tiptronic switch
Interior lights system
Lamp control module
Lamp control module, right parking light, right front side marker light left/right taillights (w/ drl), license plate lights (w/ drl), instrument cluster
Lamp control module, left parking light, left front side marker light, instrument cluster
Left high beam headlight, front/rear fog light control module
Light light switch switch
Motronic engine control module
Plenum chamber e-box relay & fuse panel
Red
Right high beam headlight, instrument cluster
S2/87f
S3/ 87a
S3/s
To central electric panel (diagram 3 of 4)
W/ drl
W/o drl
Wiper/ washer intermittent relay

Power Distribution Wiring Diagram (3 of 4) for Audi S8 2003

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List of elements for Power Distribution Wiring Diagram (3 of 4) for Audi S8 2003:

10a
2001-03
75x
A/c clutch relay
A/c control head
A/c control head, fresh air blower, interior monitoring sensors control module, ultra sound sensors control module
A80
Abs control module, anti- slip control switch, brake switch vacuum vent valve, asr/esp switch
Airbag control module
B110
C.b. 30a
Central electric panel
Central electric panel (diagram 2 of 4)
Central locking/alarm system/interior lights delay control module, rear window shade switch, automatic dimmer inside mirror, garage door opener control module, interior & map/reading light relay
Data link connector, instrument cluster, lamp control module, multi- function steering wheel control module, radio, left/ right headlight beam adjusting motor, headlight beam adjusting control module, parking aid control module, tire pressure monitoring control module
Driver's & passenger's side mirror
Emergency flasher switch
From g
From ignition switch (diagram 1 of 4)
Front/rear fog light control module
Fuse 1 (st2) 10a
Fuse 1 (st3) 15a
Fuse 10 (st2) 5a
Fuse 10 (st4) 10a
Fuse 15a
Fuse 2 (st3) 5a
Fuse 4 (st5) 10a
Fuse 40a
Fuse 5 (st3) 10a
Fuse 5 (st4) 5a
Fuse 5a
Fuse 6 (st2) 30a
Fuse 6 (st3) 10a
Fuse 8 (st2) 10a
Fuse 8 (st3) 10a
Fuse 8 (st4) 5a
Fuse 9 (st3) 5a
Fuse panel
Left front power window control module
Left rear power window control module
Left washer nozzle heater
Motronic engine control
Motronic engine control module, fuel injectors, oil level thermal sensor
Multi-function transmission range switch
Multi-function transmission range switch, shift lock solenoid, cruise control switch
Navigation control unit
Oil level thermal sensor
Passenger side airbag off indicator
Plenum chamber e-box relay & fuse panel
Rear window defogger switch
Red
Right front footwell e-box auxiliary fuse & relay panel
Right front power window control module
Right rear power window control module
Right washer nozzle heater
Servotronic control module
Solar cell separation relay
Solar cell separation relay (w/ sunroof)
Steering column control unit
Telephone transceiver, radio
Telephone/ telematic control module
To central electric panel (diagram 4 of 4)
Transmission control module

Power Distribution Wiring Diagram (4 of 4) for Audi S8 2003

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List of elements for Power Distribution Wiring Diagram (4 of 4) for Audi S8 2003:

(diagram 3 of 4)
10a
75x
B115
Central electric panel
Central locking/ alarm system/ interior light delay control module
Coolant fan control relay, second speed coolant fan control relay, third speed coolant fan control relay
Coolant fan control relay, second speed coolant fan control relay, third speed coolant fan relay, air quality sensor
From j central electric panel k
Front interior light, central locking/alarm system/interior light delay control module, left front reading light, left/right makeup mirror light, left/right door warning lights, passenger compartment monitoring switch, interior & map/reading light relay, central locking safe warning light
Fuse 1 (st5) 10a
Fuse 10 (st1) 25a
Fuse 10 (st5) 20a
Fuse 2 (st2) 10a
Fuse 2 (st5) 10a
Fuse 3 (st5) 15a (or 10a)
Fuse 4 (st2) 5a
Fuse 5 (st5) 15a
Fuse 50a
Fuse 6 (st5) 20a
Fuse 60a
Fuse 7 (st5) 15a
Fuse 9 (st5) 20a
Fuse panel
Left/right front power window control module, mirror adjustment switch, mirror fold-away function control module, memory program switch, rear head- rest adjustment switch, left/right rear heated seat regulator switch, driver's/passenger's heated seat switch, driver's/ passenger's seat memory program switch
Luggage compartment release switch, entry/ floor light relay, interior monitoring sensors control module, driver's side interior lock switch, mirror memory control module, memory program switch, passenger's seat memory program switch, ultra sound sensors control module
Power sunroof control module
Rear window shade control module, driver's/ passenger's heated seat switch
Red
Secondary air injection pump relay
Steering column/ belt height control module, steering column adjustment switch
Steering wheel control unit
Window lockout switch, left heated door lock control module
Windshield wiper/washer switch, wiper/washer intermittent relay

POWER MIRRORS

Automatic Day/Night Mirror Wiring Diagram for Audi S8 2003

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List of elements for Automatic Day/Night Mirror Wiring Diagram for Audi S8 2003:

2001-2003
Automatic dimmer inside mirror
Driver's side mirror
Exterior lights system
Fuse 4 (st5) 10a
Fuse 6 (st3) 10a
Fuse panel (right front footwell)
G59 (near left taillight)
Hot in run or start
Interior lights system
Multi-function transmission range switch (left side of transmission)
Nca
Passenger's side mirror
Red
Reverse

Fold-back Mirrors Wiring Diagram for Audi S8 2003

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List of elements for Fold-back Mirrors Wiring Diagram for Audi S8 2003:

A10
Driver's side mirror
Fold- away
Fuse 2 (st5) 10a
Fuse panel (right front footwell)
G43 (above right kick panel)
G44 (above left kick panel)
Hot w/ load reduction relay energized
Mirror adjustment switch
Mirror fold-away function control module (right front footwell e-box relay panel)
Passenger's side mirror

POWER SEATS

Driver"s Lumbar Wiring Diagram for Audi S8 2003

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List of elements for Driver"s Lumbar Wiring Diagram for Audi S8 2003:

Circuit breaker 30a
Driver seat lumbar support adjustment switch
Driver seat lumbar support curvature adjusting motor
Driver seat lumbar support height adjusting motor
G44 (above left kick panel)
Hot at all times
Lumbar curv- ature
Lumbar height
Right front footwell e-box auxiliary fuse & relay panel

Front Seat Heater Wiring Diagram for Audi S8 2003

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List of elements for Front Seat Heater Wiring Diagram for Audi S8 2003:

10a
All times
Drivers backrest heating element
Drivers heated seat adjuster
Drivers heated seat temper- ature sensor
Drivers seat backrest side bolster heater
Drivers seat heating element
Drivers seat side bolster heater
Fuse 10 (st5) 20a
Fuse 2 (st5) 10a
Fuse panel (at right front footwell)
G43 (above right kick panel)
G44 (above left kick panel)
Heated steering wheel circuit
Hot at
Hot w/ load reduction relay energized
Interior lights system
Nca
Passengers backrest heating element
Passengers heated seat adjuster
Passengers heated seat temper- ature sensor
Passengers seat backrest side bolster heater
Passengers seat heating element
Passengers seat side bolster heater
Solid state

Heated Steering Wheel Wiring Diagram for Audi S8 2003

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List of elements for Heated Steering Wheel Wiring Diagram for Audi S8 2003:

Drivers heated seat adjuster
Fuse 2 (st2) 10a
Fuse panel (at right front footwell)
G44 (above left kick panel)
Heated steering wheel
Hot w/ load reduction relay energized
Multi-function steering wheel control module
Steering wheel control unit
T2bv
T5b

Rear Heated Seats Wiring Diagram for Audi S8 2003

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List of elements for Rear Heated Seats Wiring Diagram for Audi S8 2003:

All times
Fuse 2 (st5) 10a
Fuse 20a
Fuse panel (at right front footwell)
G43 (above right kick panel)
Hot at
Hot w/ load reduction relay energized
Interior lights system
Left rear backrest heating element
Left rear heated seat regulating switch
Left rear heated seat switch
Left rear seat heating element
Left rear seat temper- ature sensor
Relay & fuse panel (in plenum chamber e-box)
Right rear
Right rear backrest heating element
Right rear heated seat switch
Right rear seat heat heated seat switch
Right rear seat temper- ature sensor
Seat heating element
Solid state

Rear Lumbar Wiring Diagram for Audi S8 2003

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List of elements for Rear Lumbar Wiring Diagram for Audi S8 2003:

Fuse 20a
G43 (above right kick panel)
Hot at all times
Left rear seat lumbar support curvature adjusting motor
Left rear seat lumbar support height adjusting motor
Lumbar curv- ature
Lumbar height
Rear left seat lumbar support adjustment switch
Rear right seat lumbar support adjustment switch
Relay & fuse panel
Right rear seat lumbar support curvature adjusting motor
Right rear seat lumbar support height adjusting motor

Rear Power Headrest Wiring Diagram for Audi S8 2003

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List of elements for Rear Power Headrest Wiring Diagram for Audi S8 2003:

Fuse 2 (st5) 10a
Fuse 20a
Fuse panel (at right front footwell)
G43 (above right kick panel)
Hot at all times
Hot w/ load reduction relay energized
Interior lights system
Left rear head rest lower relay (on left rear seat back)
Left rear seat head rest adjustment motor
Left rear seat head rest adjustment switch
Rear head- rest adjustment switch
Relay & fuse panel
Right rear head rest lower relay (on right rear seat back)
Right rear seat head rest adjustment motor
Right rear seat head rest adjustment switch

POWER TOP/SUNROOF

Sunroof Wiring Diagram for Audi S8 2003

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List of elements for Sunroof Wiring Diagram for Audi S8 2003:

Central locking/ alarm system/ interior light delay module (left side of luggage compt, near wheelwell)
Fuse 6 (st5) 20a
Fuse panel (right front footwell)
G43 (above right kick panel)
Hot at all times
Nca
Power sunroof control module (above interior light assembly, forward of sunroof)
Solid state
Sun roof motor
Sunroof regulator
T10o
T16
T6ad
T6ae

POWER WINDOWS

Power Windows Wiring Diagram (1 of 2) for Audi S8 2003

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List of elements for Power Windows Wiring Diagram (1 of 2) for Audi S8 2003:

All times
C.b. 37 30a
Central locking/ alarm system/ interior light delay control module (at left side of luggage compt)
Fuse 2 (st5) 10a
Fuse panel
G44 (above left kick panel)
Hot at
Hot in run
Left front window switch
Left window motor
Power sunroof control module
Right front footwell e-box auxiliary fuse & relay panel
T10o
T12
T16
Window motor

Power Windows Wiring Diagram (2 of 2) for Audi S8 2003

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List of elements for Power Windows Wiring Diagram (2 of 2) for Audi S8 2003:

(1997-99)
(2000-03)
2000-03
All times
C.b. 43 30a
Fuse 7 (st5) 15a
Fuse panel
G43 (above right kick panel)
G44 (above left kick panel)
Hot at
Interior lights system
Left rear door window motor
Left rear door window switch (center console)
Left rear door window switch (door)
Rear cigarette lighter
Right front door window switch
Right front door window switch (right door)
Right front footwell e-box auxiliary fuse & relay panel
Right rear door window motor
Right rear door window switch (center console)
Right rear door window switch (door)
Right window motor
Window lockout switch
Window m motor
Window motor

Rear Window Sun Shade Wiring Diagram for Audi S8 2003

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List of elements for Rear Window Sun Shade Wiring Diagram for Audi S8 2003:

(1997-99)
(2000-03)
(below right side of rear parcel shelf)
10a
87a
87b
Fuse 10 (st5) 20a
Fuse 4 (st5) 10a
Fuse panel
G43 (above right kick panel)
Heated seats system (1998-03)
Hot at all times
Hot in run
Interior lights system
Nca
Rear window shade control module
Rear window shade motor
Rear window shade switch

RADIO

Radio Wiring Diagram (1 of 2) for Audi S8 2003

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List of elements for Radio Wiring Diagram (1 of 2) for Audi S8 2003:

(if equipped)
(w/ navi- gation)
20a
Cd changer unit
Central locking/ alarm system/ interior light delay module (at left side of luggage compt, near wheelwell)
Data link connector (rapid data transfer)
Fuse 92
G45 (behind center of dash)
Hot at all times
Instrument cluster
Multi-function steering control module
Navigation control module (w/ cd-mechanism) (w/ navigation)
Nca
Pnk
Radio
Radio/ telephone antenna
Red
Relay & fuse panel (at right side of luggage compt)
T10u
T16
T16a
T32a
T6g
T6h
T8a
Telephone system
Telephone transceiver (if equipped)
W/ navi- gation
W/o navi- gation

Radio Wiring Diagram (2 of 2) for Audi S8 2003

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List of elements for Radio Wiring Diagram (2 of 2) for Audi S8 2003:

(on right rear pillar, near filter neck) g75
Aerial selection control unit (aerial diversity function)
Amplifier
Fm1
Fm2
Fm3
Fm4
G51 (on right side of luggage compt)
Left front bass speaker/ left front midrange speaker
Left rear bass speaker
Left rear midrange speaker
Nca
Rear window defogger with window antenna
Right front bass speaker/ right front midrange speaker
Right rear bass speaker
Right rear midrange speaker
Telephone/telematic control module (w/ telematic only) (at front of luggage compt, on bottom of parcel shelf)
Tv antenna amplifier 1
Tv antenna amplifier 2
Tv antenna amplifier 3
Tv antenna amplifier 4

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for Audi S8 2003

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List of elements for Shift Interlock Wiring Diagram for Audi S8 2003:

Fuse 6 (st3) 10a
Fuse panel (at right front footwell)
Fuse s113 15a
G43 (above right kick panel)
Hot at all times
Ignition switch
Multifunction transmission range switch (left side of transmission)
Off
Relay & fuse panel (right side of luggage compt)
Run
Shift lock solenoid (below center console)
Start
Transmission control module (tcm) (in plenum chamber e-box)

STARTING/CHARGING

Charging Wiring Diagram for Audi S8 2003

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List of elements for Charging Wiring Diagram for Audi S8 2003:

Battery
Connector tv1
Fuse 1 (st3) 15a
Fuse panel (right front footwell)
G44 (above
G51 (right side of luggage compt)
Generator
Generator warning light
Headlight beam adjusting control module (at base of right "b" pillar, behind trim)
Hot at all times
Hot in run or start
Ignition switch
Instrument cluster
Left kick panel)
Off
Run
Start
Starter
T32

Starting Wiring Diagram for Audi S8 2003

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List of elements for Starting Wiring Diagram for Audi S8 2003:

Battery
Connector tv1
Fuse 200a
G43 (above right kick panel)
G51 (right side of luggage compt)
Ignition switch
Multi-function transmission range switch (left side of transmission)
Nca
Off
P/n
Power distribution system
Red
Start
Starter
Starting interlock relay (on right front footwell e-box auxiliary fuse & relay panel)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram (1 of 2) for Audi S8 2003

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List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Audi S8 2003:

(+)
(-)
(above right kick panel) g43
8/ab
Air bag control module (below center of dash)
Central locking/ alarm system/ interior light delay control module (left side of of luggage compt)
Driver's side head air bag igniter
Driver's side rear belt tensioner igniter
Driver's side side air bag igniter
Driver's side side rear air bag igniter
Emergency flasher switch
Hot at all times
Ignition starter/ switch
Motronic engine control module (ecm) (in plenum chamber e-box)
Nca
Note: shorting bridges on air bag control module close when module connector is disconnected from harness. shorting bridges connect pins: 33 & 34, 41 & 42 43 & 44, 45 & 46, 47 & 48, 49 & 50, 51 & 52
Off
Passenger's side air bag igniter 1
Passenger's side head air bag igniter
Passenger's side rear belt tensioner igniter
Passenger's side side air bag igniter
Passenger's side side rear air bag igniter
Red
Run
Solid state
Start
T16

Supplemental Restraints Wiring Diagram (2 of 2) for Audi S8 2003

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List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Audi S8 2003:

(+)
(+) 2
(-)
(-) 1
(above right kick panel) g43
(on lower part of right "a" pillar) g43
Air bag control module (below center of dash)
Air bag malfunction indicator lamp (mil)
Air bag spiral spring/ return spring w/slip ring
Center rear belt tensioner igniter
Data link connector (dlc) (partial)
Driver's side air bag igniter
Driver's side side air bag crash sensor (below left front seat)
Instrument cluster
Left front "a" pillar microswitch
Left seat belt tensioner igniter
Nca
Passenger side air bag off warning light
Passenger's side seat occupied sensor (in bottom of right front seat)
Passenger's side side air bag crash sensor (below right front seat)
Right front "a" pillar microswitch
Right seat belt tensioner igniter
Solid state
T32

TRANSMISSION

A/T Wiring Diagram for Audi S8 2003

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List of elements for A/T Wiring Diagram for Audi S8 2003:

(56-84 not used)
(above left kick panel)
(below center console) shift lock solenoid
+/-
Blocking diode
Computer data lines system
Data link connector (below left side of dash)
Engine control module (in plenum chamber e-box)
Exterior lights system (backup)
Fuse 3 (st2) 5a
Fuse 6 (st3) 10a
Fuse panel (at right front footwell)
Fuse s113 15a
G43 (above right kick panel)
G44
G44 (above left kick panel)
Hot at all times
Hot in park or head
Ignition switch
Illum
Ind
Interior lights system
Kickdown switch (integral w/ accelerator cable)
Left
Multifunction transmission range switch (left side of transmission)
Nca
Off
Pressure control valves
Relay & fuse panel (right side of luggage compt)
Right
Run
Solenoid valves
Start
Starting system (interlock relay)
Steering wheel control unit
T2af
T5g
T5n
Tfi
Tiptronic switch
Transmission control module (tcm) (01l transmission) (in plenum chamber e-box)
Transmission fluid temperature sensor
Transmission output speed sensor (right side of transmission)
Transmission speed sensor
Valve body (01l transmission)

TRUNK, TAILGATE, FUEL DOOR

Trunk Release Wiring Diagram for Audi S8 2003

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List of elements for Trunk Release Wiring Diagram for Audi S8 2003:

(2000-01)
(2002-03)
10a
Central locking/ alarm system/ interior light delay control module (left side of luggage compt, near wheelwell)
Decklid central locking system motor
Fuse 3 (st5) 15a
Fuse panel
G98 (in rear lid harness)
Glove box lock switch
Hot at all times
Interior lights system
Interior monitoring sensors control module (left side of luggage compt)
Lugagge compartment lid release switch
T10o
T16

WIPER/WASHER

Wiper/Washer Wiring Diagram for Audi S8 2003

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List of elements for Wiper/Washer Wiring Diagram for Audi S8 2003:

(not used)
10a
2000-01
2002-03
Air conditioning system
Battery
Board computer
Central electric panel
Central locking/ alarm system/ interior light delay control module (left side of luggage compt, near wheelwell)
Fuse 10 (st1) 25a
Fuse 10 (st2) 5a
Fuse panel
G43 (above right kick panel)
G44 (above left kick panel)
Headlight washer pump
Hot at all times
Hot in run
Ignition switch
Instrument cluster
Left washer nozzle heater
Light switch
Load reduction relay
Off
Red
Right washer nozzle heater
Run
S1/31
Start
Suppression filter
T16
T26b
Washer fluid level switch
Windshield washer pump
Windshield wiper intermittent regulator
Windshield wiper motor
Windshield wiper/ washer switch
Wiper/washer intermittent relay (on right front footwell e-box relay panel)