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AUDI A4 2008 – MMI high with navigation system . Wiring diagrams, Pin Connector, Location

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Wiring Diagram AUDI A4 2008 - Navigation system with CD drive control unit - Radio - telephone and navigation system aerial - Satellite aerial - Auxiliary heater aerial



Wiring Diagram AUDI A4 2008 - Navigation system with CD drive control unit - Radio - telephone and navigation system aerial - Satellite aerial - Auxiliary heater aerial
J401 Navigation system with CD drive control unit
R52 Radio, telephone and navigation system aerial
R64 Remote control receiver for auxiliary heater
R146 Satellite radio
R170 Satellite aerial
R182 Auxiliary heater aerial
ST3 Fuse carrier 3
SF3 Fuse 3 in fuse holder F
T8n 8-pin connector
   373 Earth connection 8, in main wiring harness
   B281 Positive connection 5 (15a) in main wiring harness
   B444 Connection 1 (diagnosis), in main wiring harness
*see applicable current flow diagram for fuse assignment
*2see applicable current flow diagram
*3Roof aerial
*4Only models with 4-doors
*5Only models with auxiliary heating
*6Only models with satellite radio
*7see applicable current flow diagram for preparation for mobile telephone
*8Fibre optic cable (FOC)


AUDI A4 2008 Overview of control units in interior of vehicle

Overview of control units in interior of vehicle
  Note:
♦ Overview also valid for Avant models (5-door)!
   
AUDI A4 2008 Overview of control units in interior of vehicleGet access to all wiring diagrams of the car
q   for models without MMI
q   Location and connectors for models with right-hand drive:
6 -  Automatic anti-dazzle interior mirror -Y7- with Rain and light detector sensor -G397-
q   Location:

   
AUDI A4 2008 Overview of control units in interior of vehicleGet access to all wiring diagrams of the car
9 -  Rear right door control unit -J389-
q   Location: in rear right door
12 -  Fuel pump control unit -J538-
q   Location: under rear seat bench
14 -  Active steering control unit -J792-
q   Location and connectors:
q   Location and connectors for models with right-hand drive:
q   Location and connectors for models with right-hand drive:

   
AUDI A4 2008 Overview of control units in interior of vehicleGet access to all wiring diagrams of the car
18 -  Electronic steering column lock control unit -J764-
q   Location: on steering column
19 -  Climatronic control unit -J255-
q   Location and connectors:
20 -  Control unit for information electronics 1 -J794-
q   for models with MMI
q   Location and connectors:
q   for models with MMI:

   


AUDI A4 2008 Overview of control units in rear part of vehicle - saloon models (4-door) only

Overview of control units in rear part of vehicle - saloon models (4-door) only
AUDI A4 2008 Overview of control units in rear part of vehicle - saloon models (4-door) onlyGet access to all wiring diagrams of the car
q   Connectors:
q   Overview of Avant models (5-door):
q   Overview of Avant models (5-door):
q   Connector:
q   Overview of Avant models (5-door):
q   Overview of Avant models (5-door):
q   Connectors:
q   Overview of Avant models (5-door):
q   Connectors:
q   Overview of Avant models (5-door):
q   Overview of Avant models (5-door):

   
AUDI A4 2008 Overview of control units in rear part of vehicle - saloon models (4-door) onlyGet access to all wiring diagrams of the car
q   Overview of Avant models (5-door):
q   Overview of Avant models (5-door):
q   Overview of Avant models (5-door):

   


AUDI A4 2008 Overview of control units in rear part of vehicle - Avant models (5-door) only

Overview of control units in rear part of vehicle - Avant models (5-door) only
AUDI A4 2008 Overview of control units in rear part of vehicle - Avant models (5-door) onlyGet access to all wiring diagrams of the car
q   Connectors:
q   Connector:
q   Connectors:
q   Connectors:
4 -  Digital sound package control unit -J525-
q   Location: in left of luggage compartment, behind side trim.
4 -  Satellite radio -R146-
q   Location: in left of luggage compartment, behind side trim.
4 -  Navigation​ system​ with​ CD​ drive​ control​ unit​ -J401-
q   Location: in left of luggage compartment, behind side trim.
6 -  Voltage stabiliser -J532-
q   Fitting location:



AUDI A4 2008 Control unit for headlight range control J431 / control unit for bend lighting and headlight range control J745

Control unit for headlight range control -J431- / control unit for bend lighting and headlight range control -J745-
Location:
in front passenger footwell, behind the glove compartment
   
AUDI A4 2008 Control unit for headlight range control J431 / control unit for bend lighting and headlight range control J745Get access to all wiring diagrams of the car
A -  Control unit for headlight range control -J431- / control unit for bend lighting and headlight range control -J745-
Connector on control unit for headlight range control -J431-:
A1 -  26-pin connector -T26b-



AUDI A4 2008 Fresh air blower control unit J126

Fresh air blower control unit -J126-
Location:
in front passenger footwell, behind the glove compartment
   
AUDI A4 2008 Fresh air blower control unit J126Get access to all wiring diagrams of the car
A -  Fresh air blower control unit -J126-

AUDI A4 2008 Driver door control unit J386

Driver door control unit -J386-
Location door control unit, driver side -J386- for models with left-hand drive:
In driver door.
  Note:
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 Driver door control unit J386Get access to all wiring diagrams of the car
A -  Driver door control unit -J386-
A2 -  16-pin connector -T16m-
A4 -  6-pin connector -T6am-

.
   
AUDI A4 2008 Driver door control unit J386Get access to all wiring diagrams of the car
A -  Driver door control unit -J386-
A1 -  32-pin connector -T32j-
A2 -  16-pin connector -T16m-
A3 -  20-pin connector -T20f-
A4 -  6-pin connector -T6am-



AUDI A4 2008 Front passenger door control unit J387

Front passenger door control unit -J387-
Location door control unit, front passenger side -J387- for models with left-hand drive:
in front passenger door
  Note:
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 Front passenger door control unit J387Get access to all wiring diagrams of the car
A -  Front passenger door control unit -J387-
A2 -  16-pin connector -T16n-
A4 -  6-pin connector -T6ao-

.
   
AUDI A4 2008 Front passenger door control unit J387Get access to all wiring diagrams of the car
A -  Front passenger door control unit -J387-
A1 -  32-pin connector -T32l-
A2 -  16-pin connector -T16n-
A3 -  20-pin connector -T20g-
A4 -  6-pin connector -T6ao-



AUDI A4 2008 Automatic anti-dazzle interior mirror Y7 with Rain and light detector sensor G397

Automatic anti-dazzle interior mirror -Y7- with Rain and light detector sensor -G397-
Location:
at front of roof side member.
   
AUDI A4 2008 Automatic anti-dazzle interior mirror Y7 with Rain and light detector sensor G397Get access to all wiring diagrams of the car
Rain and light detector sensor -G397-
4 -  Main beam assist control unit -J844-



AUDI A4 2008 Sliding​ sunroof​ adjustment​ control​ unit J245 with sliding sunroof motor V1

Sliding​ sunroof​ adjustment​ control​ unit -J245- with sliding sunroof motor -V1-
Location:
in roof module, on upper front roof frame
Connector:
   
AUDI A4 2008 Sliding​ sunroof​ adjustment​ control​ unit J245 with sliding sunroof motor V1Get access to all wiring diagrams of the car

AUDI A4 2008 Onboard supply control unit J519

Onboard supply control unit -J519-
Location onboard supply control unit -J519- for models with left-hand drive:
Driver side dash panel, bottom.
  Note:
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 Onboard supply control unit J519Get access to all wiring diagrams of the car
A -  Onboard supply control unit -J519-
A2 -  17-pin connector, brown (connector E) -T17m-
A4 -  6-pin​ connector,​ green​ (connector​ G) -T6f-
A6 -  16-pin connector, brown (connector C) -T16b-
Location onboard supply control unit -J519- for models with right-hand drive:
Driver side dash panel, bottom.
  Note:
t  Figure​ shows​ right-hand drive​ model.
t  Figure for left-hand drive models .
   
AUDI A4 2008 Onboard supply control unit J519Get access to all wiring diagrams of the car
A -  Onboard supply control unit -J519-
A1 -  17-pin connector, black (connector D) -T17l-
A2 -  17-pin connector, brown (connector E) -T17m-
A3 -  17-pin connector, red (connector F) -T17n-
A4 -  6-pin​ connector,​ green​ (connector​ G) -T6f-
A5 -  32-pin connector, grey (connector A) -T32a-
A6 -  16-pin connector, brown (connector C) -T16b-
A7 -  32-pin connector, black (connector B) -T32b-



AUDI A4 2008 Active steering control unit J792

Active steering control unit -J792-
Location:
Under the carpet in the driver's footwell
   
AUDI A4 2008 Active steering control unit J792Get access to all wiring diagrams of the car
4 -  Active steering control unit -J792-
Connectors:
2 -  8-pin connector, black -T8g-

AUDI A4 2008 Radio R (with integrated CD changer R41 / DVD changer R161 )

Radio -R- (with integrated CD changer -R41- / DVD changer -R161-)
Location:
in middle part dash panel.
   
AUDI A4 2008 Radio R (with integrated CD changer R41 / DVD changer R161 )Get access to all wiring diagrams of the car
A -  Radio -R-
A1 -  Connector block, consisting of:
t  8-pin connector, brown -T8k-
t  8-pin connector, black -T16l-
t  12-pin connector, green -T12a-
t  12-pin connector, blue -T12s-
1-pin connector, black -T1i- (connection DAB) / 1-pin connector, green -T1k- (connection SDARS)
A4 -  2-pin connector, white -T2df- (AM / FM1 / FM2 connection)



AUDI A4 2008 CD changer R41 / DVD changer R161

CD changer -R41- / DVD changer -R161-
Location:
In glove compartment.
   
AUDI A4 2008 CD changer R41 / DVD changer R161Get access to all wiring diagrams of the car
A -  CD changer -R41- / DVD changer -R161-
A1 -  8-pin connector -T8aa-
A2 -  2-pin connector -T2dm-



AUDI A4 2008 Chip card reader control unit J676

Chip card reader control unit -J676-
Location:
In glove compartment.
  Note:
t  Figure​ shows​ right-hand drive​ model.
t  for models with Japan navigation system only.
   
AUDI A4 2008 Chip card reader control unit J676Get access to all wiring diagrams of the car
A -  Chip card reader control unit -J676-

AUDI A4 2008 Display unit for front information display and operating unit control unit J685

Display unit for front information display and operating unit control unit -J685-
Location:
Dash panel - centre.
  Note:
Connector -A1- is given as an example for differing equipment versions
   
AUDI A4 2008 Display unit for front information display and operating unit control unit J685Get access to all wiring diagrams of the car
A -  Display unit for front information display and operating unit control unit -J685-
A1 -  Connector for models with MMI High up to August 2009:
t  22-pin connector, black -T22b-
A1 -  Connectors for models with MMI Basic, from September 2009:
t  8-pin connector, black -T8ai-
t  4-pin connector, white -T4ao-
A1 -  Connectors for models with MMI High from September 2009:
t  8-pin connector, black -T8ai-
t  4-pin connector, black -T4an-
A1 -  10-pin connector, red -T10u-
A1 - 

AUDI A4 2008 Control unit for information electronics 1 J794

Control unit for information electronics 1 -J794-
Location:
in middle part dash panel.
   
AUDI A4 2008 Control unit for information electronics 1 J794Get access to all wiring diagrams of the car
A -  Control unit for information electronics 1 -J794-
A2 -  1-pin connector, blue -T1n-
A3 -  Vacant
A5 -  for models with -J794- basic:
t  4-pin connector, violet -T4al-
A6 -  1-pin connector, green -T1o-
A7 -  Connector block, consisting of:
t  8-pin​ connector,​ brown​ -T8ah-
t  8-pin​ connector,​ black​ -T8ao-
t  12-pin connector, blue -T12x-
t  12-pin connector, green -T12y-

AUDI A4 2008 Multimedia​ system​ operating​ unit​ E380

Multimedia​ system​ operating​ unit​ -E380-
Location:
on centre console.
   
AUDI A4 2008 Multimedia​ system​ operating​ unit​ E380Get access to all wiring diagrams of the car
A -  Multimedia​ system​ operating​ unit​ -E380-

AUDI A4 2008 Climatronic control unit J255

Climatronic control unit -J255-
Location:
in middle part dash panel.
   
AUDI A4 2008 Climatronic control unit J255Get access to all wiring diagrams of the car
A -  Climatronic control unit -J255-
A2 -  20-pin connector -T20e-



AUDI A4 2008 Airbag​ control​ unit​ J234

Airbag​ control​ unit​ -J234-
Location:
Under centre console
   
AUDI A4 2008 Airbag​ control​ unit​ J234Get access to all wiring diagrams of the car
A -  Airbag​ control​ unit​ -J234-

AUDI A4 2008 Telephone transmitter and receiver unit R36

Telephone transmitter and receiver unit -R36-
Location:
in front right footwell.
   
AUDI A4 2008 Telephone transmitter and receiver unit R36Get access to all wiring diagrams of the car
A -  Telephone transmitter and receiver unit -R36-
A1 -  Connector -B- (Aerial​ for​ Bluetooth)

AUDI A4 2008 16-pin connector T16 diagnostic connection

16-pin connector -T16- diagnostic connection
Location:
Driver side dash panel, bottom.
   
AUDI A4 2008 16-pin connector T16 diagnostic connectionGet access to all wiring diagrams of the car
A -  16-pin connector -T16- diagnostic connection



AUDI A4 2008 Data bus diagnostic interface J533

Data bus diagnostic interface -J533-
Location:
below the dash panel.
   
AUDI A4 2008 Data bus diagnostic interface J533Get access to all wiring diagrams of the car
A -  Data bus diagnostic interface -J533-
A2 -  20-pin connector -T20d-



AUDI A4 2008 Control unit in dash panel insert J285

Control unit in dash panel insert -J285-
Location:
in the dash panel.
   
AUDI A4 2008 Control unit in dash panel insert J285Get access to all wiring diagrams of the car
A -  Control unit in dash panel insert -J285-

AUDI A4 2008 Control units on right in luggage compartment

Control units on right in luggage compartment
   
Location:
1 -  Convenience system central control unit -J393-
Connectors on convenience system central control unit -J393- → Chapter
2 -  Aerial​ amplifier​ for​ mobile​ telephone -R86-
3 -  Electronically controlled damping control unit -J 250-
Connector on electronically controlled damping control unit -J250-
4 -  Reversing camera system control unit -J772-
5 -  Trailer detector control unit -J345-
Connectors on trailer detector control unit -J345-
6 -  Park assist steering control unit -J791-
Connectors on park assist steering control unit -J791-
7 -  Control​ unit​ for​ electromechanical​ parking​ brake -J540-
 
AUDI A4 2008 Control units on right in luggage compartmentGet access to all wiring diagrams of the car
Connectors on convenience system central control unit -J393-
AUDI A4 2008 Control units on right in luggage compartmentGet access to all wiring diagrams of the car
2 -  32-pin connector, black (connector B) -T32c-
4 -  32-pin connector, blue (connector F) -T32e-
5 -  6-pin​ connector​ (connector​ G) -not assigned-
7 -  1-pin​ connector,​ grey​ (connector​ D) -T1h-

   
Connector on electronically controlled damping control unit -J250-
AUDI A4 2008 Control units on right in luggage compartmentGet access to all wiring diagrams of the car
A -  Electronically controlled damping control unit -J 250-
Connector:
Connectors on trailer detector control unit -J345-
AUDI A4 2008 Control units on right in luggage compartmentGet access to all wiring diagrams of the car
A -  Trailer detector control unit -J345-
Connectors:
C -  12-pin connector, red -T12d-

   
Connectors on Parallel​ Parking​ Assistance​ Control​ Module -J791-
AUDI A4 2008 Control units on right in luggage compartmentGet access to all wiring diagrams of the car
B -  12-pin connector, brown -T12e-

AUDI A4 2008 All-wheel drive control unit J492

All-wheel drive control unit -J492-
.
   
AUDI A4 2008 All-wheel drive control unit J492Get access to all wiring diagrams of the car
1 -  All-wheel drive control unit -J492-
Location for Avant (5-door) models:
on right wheel housing.
  Note:
t  Figure shows Avant (5-door) model.
t  Figure for saloon (4-door) model .
   
AUDI A4 2008 All-wheel drive control unit J492Get access to all wiring diagrams of the car
1 -  All-wheel drive control unit -J492-
2 -  47-pin connector -T47b-



AUDI A4 2008 Voltage stabiliser J532

Voltage stabiliser -J532-
Location:
In spare wheel recess, on left next to battery.
   
AUDI A4 2008 Voltage stabiliser J532Get access to all wiring diagrams of the car
1 -  Voltage stabiliser -J532-

AUDI A4 2008 Battery​ monitor​ control​ unit​ J367

Battery​ monitor​ control​ unit​ -J367-
Location:
at negative terminal of battery -A-.
   
AUDI A4 2008 Battery​ monitor​ control​ unit​ J367Get access to all wiring diagrams of the car
3 -  2-pin connector -T2x-

   


AUDI A4 2008 Overview of fuses

Overview of fuses
  Note
Overview also valid for Avant models (5-door)!
   
AUDI A4 2008 Overview of fusesGet access to all wiring diagrams of the car
Fuse holder A -SA-
q   Fitting location:
1 -  Battery isolation relay fuse -S171-
q   Fitting location next to second battery
q   Fitting location for models with right-hand drive, up to and including model year 2009:
q   Fitting location for models with left-hand drive, from model year 2010:
q   Fitting location for models with right-hand drive, from model year 2010:
q   Fitting location for models with left-hand drive, from November 2011:
q   Fitting location for models with right-hand drive, from November 2011:
q   Fitting location for models with right-hand drive:
6-pin coupling station of A-pillar, driver side
q   Fitting location for models with left-hand drive:
q   Fitting location for models with right-hand drive:
3-pin relay and fuse holder
q   Fitting location for models with left-hand drive:
q   Fitting location for models with right-hand drive:
Relay/fuse holder B -SB-
q   Fitting location for models with left-hand drive, up to October 2011:
q   Fitting location for models with right-hand drive, up to October 2011:
q   Fitting location for models with left-hand drive, from November 2011:
q   Fitting location for models with right-hand drive, from November 2011:

   
AUDI A4 2008 Overview of fusesGet access to all wiring diagrams of the car
Terminal 30 wiring junction 2 -TV22- with jump start socket -U6-
q   Fitting location up to October 2011:
q   Fitting location from November 2011:
6-pin coupling station of A-pillar, front passenger side
q   Fitting location for models with left-hand drive:
q   Fitting location for models with right-hand drive:
q   Fitting location for models with right-hand drive:
Relay/fuse holder F -SF-
q   Fitting location up to and including model year 2009:
q   Fitting location from model year 2010:
q   Fitting location from November 2011:



AUDI A4 2008 Fuse holder A SA

Fuse holder A -SA-
Fitting location:
on battery positive pole, in luggage compartment
   
AUDI A4 2008 Fuse holder A SAGet access to all wiring diagrams of the car
A -  Battery isolation igniter -N253-
1 -  Fuse 1 on fuse holder A -SA1-,
2 -  Fuse 2 on fuse holder A -SA2-,
3 -  Fuse 3 on fuse holder A -SA3-,

for models with left-hand drive only
2)  30
3 - Fuse 3 on fuse holder A -SA3- 40 A
50 A
110 A
80 A		 - Driving school option
Rental car option
Public authority option
Fuse 1 for ABS control unit -S123-
Fuse 2 for ABS control unit -S124-
Fuse 3 for ABS control unit -S137-		 30



AUDI A4 2008 Relay/ fuse​ holder​ B SB up to October 2011

Relay/fuse​ holder​ B -SB- up to October 2011
Location, relay/fuse holder B -SB- for models with left-hand drive, up to October 2011:
In electronics box in plenum chamber, driver side
3)  for models with 6-cylinder diesel engine only
5)  .
   
AUDI A4 2008 Relay/ fuse​ holder​ B SB up to October 2011Get access to all wiring diagrams of the car
K -  Engine glow plug strip fuse -S39-, 60 A
K -  Engine glow plug strip fuse -S39-, 80 A
K -  Secondary​ air​ pump​ fuse -S130-, 50 A
L -  NOx​ sender​ fuse​ -S360-, 5 A
ST1 -  Fuse carrier 1, fuses

for models with 4-cylinder diesel engine only
7)  for models with 6-cylinder petrol engine only
  Note
t  Figure​ shows​ right-hand drive​ model.
t  Figure for left-hand drive models .
   
AUDI A4 2008 Relay/ fuse​ holder​ B SB up to October 2011Get access to all wiring diagrams of the car
K -  Engine glow plug strip fuse -S39-, 60 A
K -  Engine glow plug strip fuse -S39-, 80 A
K -  Secondary​ air​ pump​ fuse -S130-, 50 A
L -  NOx​ sender​ fuse​ -S360-, 5 A
ST1 -  Fuse carrier 1, fuses

for models with 4-cylinder petrol engine (1.8 l TFSI) only
10)  for models with 6-cylinder petrol engine (3.2 l FSI) only
12)  for models with 4-cylinder diesel engine (2.0 l TDI) only
14)  for models with 4-cylinder diesel engine (2.0 l TDI - gen. 2)
16) 
15 A
15 A
15 A
15 A
15 A
15 A
20 A 		- Air mass meter -G70-
Automatic glow period control unit -J179-
Secondary air pump relay -J299-
Throttle valve control unit -J338-
Low heat output relay -J359-
High heat output relay -J360-
Charge pressure control solenoid valve -N75-
Crankcase breather heater element -N79-
Activated charcoal filter solenoid valve 1 -N80-
Secondary air injection valve -N112-
Left electrohydraulic engine mounting solenoid valve -N144-
Right electrohydraulic engine mounting solenoid valve -N145-
Variable intake manifold changeover valve -N156-
Air filter bypass flap valve -N275-
Fuel pressure regulating valve -N276-
Fuel metering valve -N290-
Secondary air injection valve 2 -N320-
Exhaust gas recirculation cooler changeover valve -N345-
Oil pressure control valve -N428-
Fuel system diagnostic pump -V144-		 87
6   Fuse 6 on fuse holder B -SB6- 15 A - Engine control unit -J623- 87
7   Fuse 7 on fuse holder B -SB7- 10 A
10 A
10 A
10 A
10 A
10 A
15 A
15 A 		- Actuator 1 for camshaft adjustment -F366-
t  up to
Actuator 8 for camshaft adjustment -F373-
Actuator 9 for camshaft adjustment -F374-
t  up to
Actuator 12 for camshaft adjustment -F377-
Continued coolant circulation relay -J151-
Additional​ coolant​ pump​ relay -J496-
Charge pressure control solenoid valve -N75-
Activated charcoal filter solenoid valve 1 -N80-
Left electrohydraulic engine mounting solenoid valve -N144-
Right electrohydraulic engine mounting solenoid valve -N145-
Camshaft control valve 1 -N205-
Camshaft control valve 2 -N208-
Turbocharger air recirculation valve -N249-
Fuel pressure regulating valve -N276-
Fuel metering valve -N290-
Intake manifold flap valve -N316-
Exhaust camshaft control valve 1 -N318-
Exhaust camshaft control valve 2 -N319-
Climatronic coolant shut-off valve -N422-
Oil pressure control valve -N428-
Fuel system diagnostic pump -V144-
Charge air cooling pump -V188-		 87
8   Fuse 8 on fuse holder B -SB8- 5 A
10 A
10 A
10 A
20 A
20 A
20 A
20 A 		- Exhaust gas recirculation cooler pump -V400-
Ignition coil 1 with output stage -N70-
Ignition coil 2 with output stage -N127-
Ignition coil 3 with output stage -N291-
Ignition coil 4 with output stage -N292-
Ignition coil 5 with output stage -N323-
Ignition coil 6 with output stage -N324-		 87
9   Fuse 9 on fuse holder B -SB9- 5 A
15 A
15 A
20 A
20 A
20 A 		- Supplementary fuel pump relay -J832-
Lambda probe 1 heater after catalytic converter -Z29-
Lambda probe 2 heater after catalytic converter -Z30-		 87
10   Fuse 10 on fuse holder B -SB10- 10 A
15 A
15 A
15 A
15 A
15 A
15 A 		- Lambda probe heater -Z19-
Lambda probe heater 2 -Z28-
Lambda probe 1 heater after catalytic converter -Z29-		 87
11   Fuse 11 on fuse holder B -SB11- 5 A - Radiator fan control unit -J293-
Radiator fan control unit 2 -J671-		 87
12 - Fuse 12 on fuse holder B -SB12- 5 A - Air mass meter -G70-
Automatic gearbox control unit -J217-
Mechatronic unit for dual clutch gearbox -J743-		 15



AUDI A4 2008 Relay/ fuse holder B SB from November 2011

Relay/fuse holder B -SB- from November 2011
for models with 4-cylinder diesel engine only
18)  for models with 6-cylinder petrol engine only
  Note
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 Relay/ fuse holder B SB from November 2011Get access to all wiring diagrams of the car
K -  Engine glow plug strip fuse -S39-, 60 A
K -  Engine glow plug strip fuse -S39-, 80 A
K -  Secondary​ air​ pump​ fuse -S130-, 50 A
ST1 -  Fuse carrier 1, fuses

for models with 4-cylinder diesel engine only
21)  for models with 6-cylinder petrol engine only
23)  .
   
AUDI A4 2008 Relay/ fuse holder B SB from November 2011Get access to all wiring diagrams of the car
K -  Engine glow plug strip fuse -S39-, 60 A
K -  Engine glow plug strip fuse -S39-, 80 A
K -  Secondary​ air​ pump​ fuse -S130-, 50 A
L -  Secondary​ air​ pump​ fuse 2 -S284-, 50 A
ST1 -  Fuse carrier 1, fuses

for models with 4-cylinder petrol engine (1.8 l TFSI gen. 2)
25)  for models with 4-cylinder petrol engine (2.0 l TFSI) only
27)  for models with 4-cylinder diesel engine (2.0 l TDI) only
29)  for models with 6-cylinder diesel engine (3.0 l TDI BIN 5) only
31)  for models with 8-cylinder petrol engine only (for RS 4 only)
33) 
5 A
7.5 A
10 A
10 A
10 A 		- Air mass meter -G70-
Fuel pressure regulating valve -N276-
Fuel metering valve -N290-
Magnetic clutch for supercharger -N421-		 87
6   Fuse 6 on fuse holder B -SB6- 15 A - Engine control unit -J623-
Injector 2, cylinder 1 -N532-
Injector 2, cylinder 2 -N533-
Injector 2, cylinder 3 -N534-
Injector 2, cylinder 4 -N535-
Activated charcoal filter solenoid valve 1 -N80-
Secondary air inlet valve -N112-
Oil pressure control valve -N428-
Actuator for engine temperature regulation -N493-
Engine oil cooler valve -N554-
Charge pressure positioner 2 -V546-		 87
7   Fuse 7 on fuse holder B -SB7- 10 A
10 A
10 A
10 A 		- Actuator 1 for camshaft adjustment -F366-
Actuator 2 for camshaft adjustment -F367-
Actuator 3 for camshaft adjustment -F368-
Actuator 4 for camshaft adjustment -F369-
Actuator 5 for camshaft adjustment -F370-
Actuator 6 for camshaft adjustment -F371-
Actuator 7 for camshaft adjustment -F372-
Actuator 8 for camshaft adjustment -F373-
Charge pressure control solenoid valve -N75-
Activated charcoal filter solenoid valve 1 -N80-
Left electrohydraulic engine mounting solenoid valve -N144-
Right electrohydraulic engine mounting solenoid valve -N145-
Camshaft control valve 1 -N205-
Camshaft control valve 2 -N208-
Exhaust flap valve -N220-
Turbocharger air recirculation valve -N249-
Fuel pressure regulating valve -N276-
Fuel metering valve -N290-
Intake manifold flap valve -N316-
Exhaust camshaft control valve 1 -N318-
Exhaust camshaft control valve 2 -N319-
Climatronic coolant shut-off valve -N422-
Oil pressure control valve -N428-
Coolant valve for gearbox -N488-
Piston cooling jet control valve -N522-
Continued coolant circulation pump -V51-
Pump for exhaust gas recirculation cooler -V400-		 87
8   Fuse 8 on fuse holder B -SB8- 5 A
5 A
7.5 A
10 A
15 A
- NOx sender 2 -G687-
Control unit for NOx sender 2 -J881-
Brake servo relay -J569-
NOx sender -G295-
Particulate sensor -G784-
Control unit for NOx sender -J583-
Left electrohydraulic engine mounting solenoid valve -N144-
Right electrohydraulic engine mounting solenoid valve -N145-
Secondary air pump relay -J299-
Charge air cooling pump -V188-		 87
9   Fuse 9 on fuse holder B -SB9- 5 A - Voltage stabiliser -J532-
Engine control unit -J623-		 87
10   Fuse 10 on fuse holder B -SB10- 5 A
10 A
10 A
15 A
15 A
15 A
15 A 		- Lambda probe heater -Z19-
Lambda probe heater 2 -Z28-
Lambda probe 1 heater after catalytic converter -Z29-
Power steering control unit -J500-		 87
11   Fuse 11 on fuse holder B -SB11- 5 A - Radiator fan control unit -J293-
Radiator fan control unit 2 -J671-		 87
12   Fuse 12 on fuse holder B -SB12- 5 A - Automatic gearbox control unit -J217-
Mechatronic unit for dual clutch gearbox -J743-		 87
13   Fuse 13 on fuse holder B -SB13- 15 A - - only for :
Injector 2, cylinder 1 -N532-
Injector 2, cylinder 2 -N533-
Injector 2, cylinder 3 -N534-
Injector 2, cylinder 4 -N535-
Injector 2,cylinder 5 -N536-
Injector 2, cylinder 6 -N537-		  
14   Fuse 14 on fuse holder B -SB14- 5 A
20 A
20 A
20 A
20 A
20 A
30A		 - Engine component current supply relay 2 -J976-
Ignition coil 1 with output stage -N70-
Ignition coil 2 with output stage -N127-
Ignition coil 3 with output stage -N291-
Ignition coil 4 with output stage -N292-
Ignition coil 5 with output stage -N323-
Ignition coil 6 with output stage -N324-
Ignition coil 7 with output stage -N325-
Ignition coil 8 with output stage -N326-
Climatronic coolant shut-off valve -N422-
Pump for exhaust gas recirculation cooler -V400-		 87
15   Fuse 15 on fuse holder B -SB15- 5 A
20 A		 - Power steering control unit -J500- , not for
Lambda probe heater -Z19-, only for
Lambda probe heater 2 -Z28-, only for 		87
16   Fuse 16 on fuse holder B -SB16- 15 A
25 A		 - Map-controlled engine cooling system thermostat -F265-
Automatic glow period control unit -J179-
Secondary air pump relay -J299-
Low heat output relay -J359-
High heat output relay -J360-
Additional coolant pump relay -J496-
Secondary air pump 2 relay -J545-
Gearbox cooling circuit relay -J696-
Charge pressure control solenoid valve -N75-
Heater element for crankcase breather -N79-
Activated charcoal filter solenoid valve 1 -N80-
Secondary air inlet valve -N112-
Left electrohydraulic engine mounting solenoid valve -N144-
Right electrohydraulic engine mounting solenoid valve -N145-
Air filter bypass flap valve -N275-
Intake manifold flap valve -N316-
Secondary air inlet valve 2 -N320-
Exhaust gas recirculation cooler changeover valve -N345-
Oil pressure control valve -N428-
Coolant valve for gearbox -N488-
Coolant valve for cylinder head -N489-
Actuator for engine temperature regulation -N493-
Coolant circulation pump -V50-
Charge air cooling pump -V188-
Crankcase breather valve -V546-
Engine control unit -J623-		 87
17   Fuse 17 on fuse holder B -SB17- 15 A
20 A		 - Lambda probe 1 heater after catalytic converter -Z29-
Lambda probe 2 heater after catalytic converter -Z30-		 87



AUDI A4 2008 Fuse holder C SC up to model year 2009

Fuse holder C -SC- up to model year 2009
Location fuse holder C -SC- up to model year 2009 for models with left-hand drive:
Below the dash panel cover, driver side
  Note
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 Fuse holder C SC up to model year 2009Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
ST3 -  Fuse carrier 3, fuses

.
   
AUDI A4 2008 Fuse holder C SC up to model year 2009Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
ST3 -  Fuse carrier 3, fuses

Fuses in fuse carrier ST2 on fuse holder C -SC- (brown)
34)  Only models with diesel engine
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder C -SC1- 5 A - Circulation pump relay -J160- 87
2 - Fuse 2 on fuse holder C -SC2- 5 A - Clutch pedal switch -F36-
Clutch pedal switch for engine start -F194-
Clutch position sender -G476-		 87
3 - Fuse 3 on fuse holder C -SC3- 20 A
25 A 		- Fuel system pressurisation pump -G6-
Fuel pump control unit -J538-		 87
4 - Fuse 4 on fuse holder C -SC4- 5 A - Circulation pump relay -J160- 15
5 - Fuse 5 on fuse holder C -SC5- 30 A - Onboard supply control unit -J519- 30
6 - Fuse 6 on fuse holder C -SC6- 10 A - ABS control unit -J104- 30
7 - Fuse 7 on fuse holder C -SC7- 25 A - Horn relay -J413- 30
8 - Fuse 8 on fuse holder C -SC8- 30 A - Driver door control unit -J386-
Rear left door control unit -J388-		 30
9 - Fuse 9 on fuse holder C -SC9- 30 A - Wiper motor control unit -J400- 30
10 - Fuse 10 on fuse holder C -SC10- 25 A - ABS control unit -J104-4 30
11 - Fuse 11 on fuse holder C -SC11- 15 A - Driver door control unit -J386-
Rear left door control unit -J388-		 30
12 - Fuse 12 on fuse holder C -SC12- 5 A - Rain and light sensor -G397- 30

   

AUDI A4 2008 Fuse holder C SC from model year 2010

Fuse holder C -SC- from model year 2010
.
   
AUDI A4 2008 Fuse holder C SC from model year 2010Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
ST3 -  Fuse carrier 3, fuses

.
   
AUDI A4 2008 Fuse holder C SC from model year 2010Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
ST3 -  Fuse carrier 3, fuses

Fuses in fuse carrier ST2 on fuse holder C -SC- (brown)
36)  for models with diesel engine (without J538) only
38)  for models with left-hand drive only
40)  for models with seat ventilation only
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder C -SC1- 5 A - Automatic anti-dazzle interior mirror -Y7- 15
2 - Fuse 2 on fuse holder C -SC2- 5 A - Clutch position sender -G476- 87
3 - Fuse 3 on fuse holder C -SC3- 20 A
25 A
25 A 		- Fuel system pressurisation pump -G6-
Fuel pump control unit -J538-		 87
4 - Fuse 4 on fuse holder C -SC4- 10 A - Circulation pump relay -J160-
Pump for reducing agent -V437-		 15
5 - Fuse 5 on fuse holder C -SC5- 15 A
30 A 		- Onboard supply control unit -J519- 30
6 - Fuse 6 on fuse holder C -SC6- 10 A - ABS control unit -J104- 30
7 - Fuse 7 on fuse holder C -SC7- 25 A - Horn relay -J413- 30
8 - Fuse 8 on fuse holder C -SC8- 30 A - Left doors 30
9 - Fuse 9 on fuse holder C -SC9- 30 A - Wiper motor control unit -J400- 30
10 - Fuse 10 on fuse holder C -SC10- 25 A - ABS control unit -J104- 30
11 - Fuse 11 on fuse holder C -SC11- 15 A - Left doors 30
12 - Fuse 12 on fuse holder C -SC12- 5 A - Rain and light sensor -G397- 30

   

AUDI A4 2008 Fuse holder C SC from November 2011

Fuse holder C -SC- from November 2011
.
   
AUDI A4 2008 Fuse holder C SC from November 2011Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
ST3 -  Fuse carrier 3, fuses

.
   
AUDI A4 2008 Fuse holder C SC from November 2011Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
ST3 -  Fuse carrier 3, fuses

Fuses in fuse carrier ST2 on fuse holder C -SC- (brown)
42)  for models with seat ventilation only
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder C -SC1- - Not assigned
2 - Fuse 2 on fuse holder C -SC2- 5 A - Brake light switch -F- 87
3 - Fuse 3 on fuse holder C -SC3- 25 A - Fuel pump control unit -J538- 87
4 - Fuse 4 on fuse holder C -SC4- 5 A - Clutch position sender -G476-
Pressure sender for reducing agent metering system -G686-
Control unit for reducing agent metering system -J880-
Pump for reducing agent -V437-
Heater for reducing-agent pump -Z103-		 87
5 - Fuse 5 on fuse holder C -SC5- 15 A
30 A 		- Onboard supply control unit -J519-
Control unit for front left seat ventilation -J800-		 30
6 - Fuse 6 on fuse holder C -SC6- 5 A - ABS control unit -J104- 30
7 - Fuse 7 on fuse holder C -SC7- 15 A - Treble horn -H2-
Bass horn -H7-
Horn relay -J413-		 30
8 - Fuse 8 on fuse holder C -SC8- 30 A - Front left door 30
9 - Fuse 9 on fuse holder C -SC9- 30 A - Wiper motor control unit -J400- 30
10 - Fuse 10 on fuse holder C -SC10- 25 A - ABS control unit -J104- 30
11 - Fuse 11 on fuse holder C -SC11- 30 A - Rear left door 30
12 - Fuse 12 on fuse holder C -SC12- 5 A - Rain and light sensor -G397- 30

   

AUDI A4 2008 Fuse holder D SD

Fuse holder D -SD-
Location fuse holder D -SD- for models with left-hand drive:
Below the dash panel cover, front passenger side
  Note
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 Fuse holder D SDGet access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
A -  46-pin connector, black, CAN disconnector, dash panel -T46s-

.
   
AUDI A4 2008 Fuse holder D SDGet access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
A -  46-pin connector, black, CAN disconnector, dash panel -T46s-

applicable up to October 2011
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder D -SD1- - Not assigned
2 - Fuse 2 on fuse holder D -SD2-   - Not assigned
3 - Fuse 3 on fuse holder D -SD3- - Not assigned
4 - Fuse 4 on fuse holder D -SD4- - Not assigned
5 - Fuse 5 on fuse holder D -SD5- 5 A - Steering column electronics control unit -J527- 15
6 - Fuse 6 on fuse holder D -SD6- 5 A - TCS and ESP button -E256-
Parking aid button -E266-		 15
7 - Fuse 7 on fuse holder D -SD7- 5 A - 16-pin connector -T16-, diagnostic connector 15
8 - Fuse 8 on fuse holder D -SD8- 5 A - Data bus diagnostic interface -J533- 15
9 - Fuse 9 on fuse holder D -SD9- 5 A - High heat output relay -J360- 15
10 - Fuse 10 on fuse holder D -SD10-   - Not assigned
11 - Fuse 11 on fuse holder D -SD11-   - Not assigned
12 - Fuse 12 on fuse holder D -SD12-   - Not assigned

for models with radio (CAN) with external amplifier only
46)  for models with radio chorus and sound system Basic (from November 2009) only
48)  applicable up to October 2011
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder D -SD1- 5 A - CD changer -R41-
DVD changer -R161-
Connection for external audio sources -R199-		 30
2 - Fuse 2 on fuse holder D -SD2- 5 A - Switch module for driving mode selection -E592- 30
3 - Fuse 3 on fuse holder D -SD3- 5 A
5 A
20 A
20 A 		- Display unit for front information display and operating unit control unit -J685-
Control unit 1 for information electronics -J794-
Radio -R-		 30
4 - Fuse 4 on fuse holder D -SD4- 5 A - Control unit in dash panel insert -J285- 30
5 - Fuse 5 on fuse holder D -SD5- 5 A - Data bus diagnostic interface -J533- 30
6 - Fuse 6 on fuse holder D -SD6- 5 A - Entry and start authorisation switch -E415- 30
7 - Fuse 7 on fuse holder D -SD7- 5A - Light switch -E1-  
8 - Fuse 8 on fuse holder D -SD8- 40 A - Fresh air blower control unit -J126- 30
9 - Fuse 9 on fuse holder D -SD9- 5 A - Control unit for electronic steering column lock -J764- 30
10 - Fuse 10 on fuse holder D -SD10- 10 A - Climatronic control unit -J255- 30
11 - Fuse 11 on fuse holder D -SD11- 10 A - 16-pin connector -T16-, diagnostic connector 30
12 - Fuse 12 on fuse holder D -SD12- 5 A - Steering column electronics control unit -J527- 30



AUDI A4 2008 Relay/ fuse holder F SF up to model year 2009

Relay/fuse holder F -SF- up to model year 2009
Location, relay/fuse holder F -SF- up to model year 2009:
in luggage compartment, behind side trim on right
   
AUDI A4 2008 Relay/ fuse holder F SF up to model year 2009Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1, fuses
ST2 -  Fuse carrier 2, fuses
ST3 -  Fuse carrier 3, fuses
ST4 -  Fuse carrier 4, fuses
ST5 -  Fuse carrier 5, fuses
H -  Heated rear window single fuse -S41-

Fuses in fuse carrier ST2 on fuse holder F -SF- (black)
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder F -SF1- 5 A - Tyre pressure monitor control unit -J502- 30
2 - Fuse 2 on fuse holder F -SF2- 15 A - Trailer detector control unit -J345- 30
3 - Fuse 3 on fuse holder F -SF3- 20 A - Trailer detector control unit -J345- 30
4 - Fuse 4 on fuse holder F -SF4- 20 A - Trailer detector control unit -J345- 30
5 - Fuse 5 on fuse holder F -SF5- 5 A - Electromechanical parking brake button -E538- 30
6 - Fuse 6 on fuse holder F -SF6- 15 A - Electronically controlled damping control unit -J250- 30
7 - Fuse 7 on fuse holder F -SF7- 30 A - Control unit for electromechanical parking brake -J540- 30
8 - Fuse 8 on fuse holder F -SF8- 30 A - Convenience system central control unit -J393- 30
9 - Fuse 9 on fuse holder F -SF9- 35 A - All-wheel drive control unit -J492- 30
10 - Fuse 10 on fuse holder F -SF10- 30 A - Convenience system central control unit -J393- 30
11 - Fuse 11 on fuse holder F -SF11- 20 A - Convenience system central control unit -J393- 30
12 - Fuse 12 on fuse holder F -SF12- 5 A - Interface control unit for vehicle location system -J843- 30

no longer fitted, phased-in modification
51) 
30 A 		- DC/AC converter with socket, 12 V-230 V -U13- 30
2 - Fuse 2 on fuse holder F -SF2- 15 A - Front right seat ventilation control unit -J799- 30
3 - Fuse 3 on fuse holder F -SF3- 7.5 A - Navigation system with CD drive control unit -J401-
Radio -R-
Telephone transmitter and receiver unit -R36-
TV tuner -R78-
Aerial amplifier for mobile telephone -R86-
Telephone bracket -R126-
Satellite radio -R146-
Digital radio -R147-
18-pin connector, black -T18a-		 30
4 - Fuse 4 on fuse holder F -SF4- 30 A - Digital sound package control unit -J525- 30
5 - Fuse 5 on fuse holder F -SF5- 5 A - Control unit for front display and information control panel -J523- 30
6 - Fuse 6 on fuse holder F -SF6- 30 A - Auxiliary heater control unit -J364- 30
7 - Fuse 7 on fuse holder F -SF7- 30 A - Control unit for electromechanical parking brake -J540- 30
8 - Fuse 8 on fuse holder F -SF8- 30 A - Heated rear left seat switch with regulator -E128-
Heated rear right seat switch with regulator -E129-		 30
9 - Fuse 9 on fuse holder F -SF9- 30 A - Front passenger door control unit -J387-
Rear right door control unit -J389-		 30
10 - Fuse 10 on fuse holder F -SF10- 5 A - Remote control receiver for auxiliary heater -R64- 30
11 - Fuse 11 on fuse holder F -SF11- 15 A - Front passenger door control unit -J387-
Rear right door control unit -J389-		 30
12 - Fuse 12 on fuse holder F -SF12- 5 A - Reversing camera system control unit -J772- 30

   
Fuses in fuse carrier ST5 on fuse holder F -SF- (black)
52)  for civil models (F4J, F4Z) only
54)  for vehicles with preparation for disabled persons (F6M) only
56) 
15 A
15 A
15 A
25 A 		- Special vehicle control unit -J608-
Special vehicle control unit -J608-
Signal system control unit -J616-		 30
4 - Fuse 4 on fuse holder F -SF4- 15 A
15 A
10 A 		- Signal system control unit -J616-
Two-way radio -R8-		 30
5 - Fuse 5 on fuse holder F -SF5- 5 A
5 A
15 A 		- Chip card reader -D8-
Operating unit for special signals -E507-
Signal system control unit -J616-		 30
6   Fuse 6 on fuse holder F -SF6- 10 A - Chip card reader -D8-
Operating unit for special signals -E507-
Taximeter -G41-
Taxi alarm remote control, control unit -J601-
Special vehicle control unit -J608-
Signal system control unit -J616-		 15
7   Fuse 7 on fuse holder F -SF7- 5 A
20 A
20 A 		- Taxi alarm remote control, control unit -J601-
Special vehicle control unit -J608-		 30
8   Fuse 8 on fuse holder F -SF8- 10 A - Tachograph control unit -J621-
Data transmission control unit -J753-
Accident data memory		 30
9   Fuse 9 on fuse holder F -SF9- 10 A - 12 V socket 4 -U20- 30
10   Fuse 10 on fuse holder F -SF10- 10 A - Battery regulation control unit -J84- 30
11   Fuse 11 on fuse holder F -SF11- 10 A - Battery regulation control unit -J84- 30
12 - Fuse 12 on fuse holder F -SF12-   - Not assigned

   

AUDI A4 2008 Relay/ fuse holder F SF from model year 2010

Relay/fuse holder F -SF- from model year 2010
Location, relay/fuse holder F -SF- from model year 2010:
in luggage compartment, behind side trim on right
   
AUDI A4 2008 Relay/ fuse holder F SF from model year 2010Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1,
ST2 -  Fuse carrier 2,
ST3 -  Fuse carrier 3,
ST4 -  Fuse carrier 4,
ST5 -  Fuse carrier 5,
H -  Heated rear window single fuse -S41-

for civil vehicles: NEF - version (F4Z) only
58) 
25 A 		- Signal system control unit -J616- 30
4 - Fuse 4 on fuse holder F -SF4- 15 A - Signal system control unit -J616- 30
5 - Fuse 5 on fuse holder F -SF5- 5 A
15 A 		- Operating unit for special signals -E507-
Signal system control unit -J616-		 30
6 - Fuse 6 on fuse holder F -SF6- 3 A - Operating unit for special signals -E507-
Signal system control unit -J616-
Tachograph control unit -J621-
3-pin connector -T3d-
Crash data recorder		 15
7 - Fuse 7 on fuse holder F -SF7- 20 A - Special vehicle control unit -J608- 30
8 - Fuse 8 on fuse holder F -SF8- 10 A - Crash data recorder 30
9 - Fuse 9 on fuse holder F -SF9- 10 A - 12 V socket 4 -U20- 30
10 - Fuse 10 on fuse holder F -SF10- 10 A - Battery regulation control unit -J84- 30
11 - Fuse 11 on fuse holder F -SF11- 10 A - Battery regulation control unit -J84- 30
12 - Fuse 12 on fuse holder F -SF12-   - Not assigned

   
Fuses in fuse carrier ST3 on fuse holder F -SF- (brown)
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder F -SF1- 30 A - Rear lid control unit -J605- 30
2 - Fuse 2 on fuse holder F -SF2- 15 A - Front right seat ventilation control unit -J799- 30
3 - Fuse 3 on fuse holder F -SF3- 40 A - Radio -R-
Telephone transmitter and receiver unit -R36-
TV tuner -R78-
Aerial amplifier for mobile telephone -R86-
Telephone bracket -R126-
18-pin connector, black -T18a-		 30
4 - Fuse 4 on fuse holder F -SF4- 40 A - Voltage stabiliser -J532- 30
5 - Fuse 5 on fuse holder F -SF5- 30 A - DC/AC converter with socket, 12 V-230 V -U13- 30
6 - Fuse 6 on fuse holder F -SF6- 30 A - Auxiliary heater control unit -J364- 30
7 - Fuse 7 on fuse holder F -SF7- 30 A - Control unit for electromechanical parking brake -J540- 30
8 - Fuse 8 on fuse holder F -SF8- 30 A - Heated rear left seat switch with regulator -E128-
Heated rear right seat switch with regulator -E129-		 30
9 - Fuse 9 on fuse holder F -SF9- 30 A - Right doors 30
10 - Fuse 10 on fuse holder F -SF10- 5 A - Remote control receiver for auxiliary heater -R64- 30
11 - Fuse 11 on fuse holder F -SF11- 15 A - Right doors 30
12 - Fuse 12 on fuse holder F -SF12- 30 A - Control unit for reducing agent metering system -J880- 30

   
Fuses in fuse carrier ST5 on fuse holder F -SF- (black)
59)  applicable up to April 2010
61) 
30 A 		- Digital sound package control unit -J525-
Radio -R-		 30
4 - Fuse 4 on fuse holder F -SF4- 7.5 A - Control unit 1 for information electronics -J794- 30
5 - Fuse 5 on fuse holder F -SF5- 5 A
7.5 A 		- Navigation system with CD drive control unit -J401-
Radio -R-
Telephone transmitter and receiver unit -R36-
TV tuner -R78-
Aerial amplifier for mobile telephone -R86-
Telephone bracket -R126-
18-pin connector, black -T18a-		 30
6 - Fuse 6 on fuse holder F -SF6- 5 A - Reversing camera system control unit -J772- 30
7 - Fuse 7 on fuse holder F -SF7- 5 A - Aerial amplifier for mobile telephone -R86- 30
8 - Fuse 8 on fuse holder F -SF8-   - Not assigned  
9 - Fuse 9 on fuse holder F -SF9-   - Not assigned  
10 - Fuse 10 on fuse holder F -SF10-   - Not assigned  
11 - Fuse 11 on fuse holder F -SF11-   - Not assigned
12 - Fuse 12 on fuse holder F -SF12-   - Not assigned

   

AUDI A4 2008 Relay/ fuse holder F SF from November 2011

Relay/fuse holder F -SF- from November 2011
Location, relay/fuse holder F -SF- from November 2011:
in luggage compartment, behind side trim on right
62)  only for saloon models (4-door)
   
AUDI A4 2008 Relay/ fuse holder F SF from November 2011Get access to all wiring diagrams of the car
ST1 -  Fuse carrier 1,
ST2 -  Fuse carrier 2,
ST3 -  Fuse carrier 3,
ST4 -  Fuse carrier 4,
ST5 -  Fuse carrier 5,
H -  Heated rear window single fuse -S41-

for civil vehicles: NEF - version (F4Z) only
64) 
25 A		 - Signal system control unit -J616- 30
4 - Fuse 4 on fuse holder F -SF4- 15 A - Signal system control unit -J616-
Driving school mode relay -J746- (from October 2012)		 30
5 - Fuse 5 on fuse holder F -SF5- 5 A
15 A		 - Operating unit for special signals -E507-
Signal system control unit -J616-		 30
6 - Fuse 6 on fuse holder F -SF6- 3 A - Operating unit for special signals -E507-
Signal system control unit -J616-
Tachograph control unit -J621-
3-pin connector -T3d-
Crash data recorder -J754-		 15
7 - Fuse 7 on fuse holder F -SF7- 20 A - Special vehicle control unit -J608- 30
8 - Fuse 8 on fuse holder F -SF8- 10 A - Accident data memory -J754- 30
9 - Fuse 9 on fuse holder F -SF9- 10 A - 12 V socket 4 -U20- 30
10 - Fuse 10 on fuse holder F -SF10- 10 A - Battery regulation control unit -J84- 30
11 - Fuse 11 on fuse holder F -SF11- 10 A - Battery regulation control unit -J84- 30
12 - Fuse 12 on fuse holder F -SF12-   - Not assigned

only for Avant models (5-door)
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder F -SF1- 30 A - Rear lid control unit 2 -J756- 30
2 - Fuse 2 on fuse holder F -SF2- 15 A - Trailer detector control unit -J345- 30
3 - Fuse 3 on fuse holder F -SF3- 20 A - Trailer detector control unit -J345- 30
4 - Fuse 4 on fuse holder F -SF4- 20 A - Trailer detector control unit -J345- 30
5 - Fuse 5 on fuse holder F -SF5- 5 A - Electromechanical parking brake button -E538- 30
6 - Fuse 6 on fuse holder F -SF6- 15 A - Electronically controlled damping control unit -J250- 30
7 - Fuse 7 on fuse holder F -SF7- 30 A - Control unit for electromechanical parking brake -J540- 30
8 - Fuse 8 on fuse holder F -SF8- 30 A - Convenience system central control unit -J393- 30
9 - Fuse 9 on fuse holder F -SF9- 35 A - All-wheel drive control unit -J492- 30
10 - Fuse 10 on fuse holder F -SF10- 30 A - Convenience system central control unit -J393- 30
11 - Fuse 11 on fuse holder F -SF11- 20 A - Convenience system central control unit -J393- 30
12 - Fuse 12 on fuse holder F -SF12- 5 A - Interface control unit for vehicle location system -J843-
Control unit for fuel tank leak detection -J909-		 30

only for Avant models (5-door)
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder F -SF1- 30 A - Rear lid control unit -J605- 30
2 - Fuse 2 on fuse holder F -SF2- 20 A - Relay for power sockets -J807-
Cigarette lighter -U1-
12 V socket -U5-
DC/AC converter with socket, 12 V-230 V -U13-
12 V socket 2 -U18-
12 V socket 3 -U19-		 30
3 - Fuse 3 on fuse holder F -SF3- 40 A - Voltage stabiliser -J532- 30
4 - Fuse 4 on fuse holder F -SF4- 30 A - Voltage stabiliser -J532-
Radio -R-
Digital sound package control unit -J525-		 30
5 - Fuse 5 on fuse holder F -SF5- 25 A - DC/AC converter with socket, 12 V-230 V -U13- 30
6 - Fuse 6 on fuse holder F -SF6- 30 A - Auxiliary heater control unit -J364- 30
7 - Fuse 7 on fuse holder F -SF7- 30 A - Control unit for electromechanical parking brake -J540- 30
8 - Fuse 8 on fuse holder F -SF8- 30 A - Heated rear left seat switch with regulator -E128-
Heated rear right seat switch with regulator -E129-		 30
9 - Fuse 9 on fuse holder F -SF9- 30 A - Front right door 30
10 - Fuse 10 on fuse holder F -SF10- 5 A - Remote control receiver for auxiliary heater -R64- 30
11 - Fuse 11 on fuse holder F -SF11- 30 A - Rear right door 30
12 - Fuse 12 on fuse holder F -SF12- 5 A - Telephone transmitter and receiver unit -R36-
Aerial amplifier for mobile telephone -R86-
Telephone bracket -R126-		 30

   
Fuses in fuse carrier ST5 on fuse holder F -SF- (black)
67)  only for Avant models (5-door)
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - Fuse 1 on fuse holder F -SF1- 15 A - Front right seat ventilation control unit -J799- 30
2 - Fuse 2 on fuse holder F -SF2- 5 A - Relay for automatic anti-dazzle interior mirror -J910-
Automatic anti-dazzle interior mirror -Y7-		 30
3 - Fuse 3 on fuse holder F -SF3- 30 A - Supply fuse carrier 2 -ST2-fuse 1 on fuse holder D -SD1- to fuse 4 on fuse holder D -SD4- 30
4 - Fuse 4 on fuse holder F -SF4- 7.5 A - Control unit 1 for information electronics -J794- 30
5 - Fuse 5 on fuse holder F -SF5- 5 A - Chip card reader control unit -J676-
Radio -R-
TV tuner -R78-		 30
6 - Fuse 6 on fuse holder F -SF6- 5 A - Reversing camera system control unit -J772- 30
7 - Fuse 7 on fuse holder F -SF7- 30 A - Heated rear window relay -J9-
Heated rear window -Z1-		 30
8 - Fuse 8 on fuse holder F -SF8- 5 A - Preparation for multimedia system:
2-pin connector, in driver seat backrest -T2dy-
2-pin connector, in front passenger seat backrest -T2dz-		 30
9 - Fuse 9 on fuse holder F -SF9-   - Not assigned  
10 - Fuse 10 on fuse holder F -SF10-   - Not assigned  
11 - Fuse 11 on fuse holder F -SF11- 30 A - Control unit for reducing agent metering system -J880- 30
12 - Fuse 12 on fuse holder F -SF12- 10 A - Control unit for reducing agent metering system -J880- 30

only for saloon models (4-door)
   
Item   Current Flow Diagram designation Nominal value   Function/component Terminal
H - Heated rear window single fuse -S41- 40 A - Heated rear window relay -J9-
Heated rear window -Z1-		 30



AUDI A4 2008 Terminal 30 wiring junction 2 TV22 with Jump start socket U6 up to October 2011

Terminal 30 wiring junction 2 -TV22- with Jump start socket -U6- up to October 2011
Fitting location:
in engine compartment - centre of plenum chamber.
   
AUDI A4 2008 Terminal 30 wiring junction 2 TV22 with Jump start socket U6 up to October 2011Get access to all wiring diagrams of the car
A -  Terminal 30 wiring junction 2 -TV22-
B -  Jump start socket -U6-
1 -  Fuse 1 (30) -S204-,
2 -  Fuse 2 (30) -S205-,

S204 (600 W) and S205 (400 W) are installed in models with radiator fan control 1000 W
71) 
Radiator fan control 600 W 		30
2 - Fuse 2 (30) -S205- 40 A - Radiator fan control 400 W 30



AUDI A4 2008 Terminal 30 wiring junction 2 TV22 with Jump start socket U6 from November 2011

Terminal 30 wiring junction 2 -TV22- with Jump start socket -U6- from November 2011
Fitting location for models from November 2011:
in engine compartment - centre of plenum chamber.
   
AUDI A4 2008 Terminal 30 wiring junction 2 TV22 with Jump start socket U6 from November 2011Get access to all wiring diagrams of the car
A -  Terminal 30 wiring junction 2 -TV22-
B -  Jump start socket -U6-
1 -  Fuse 1 (30) -S204-,
2 -  Fuse 2 (30) -S205-,
3 -  Fuse 3 (30) -S206-,

S204 (600 W) and S205 (400 W) are installed in models with radiator fan control 1000 W
73) 
Radiator fan control 600 W 		30
2 - Fuse 2 (30) -S205- 40 A - Radiator fan control 400 W 30
3 - Fuse 3 (30) -S206- 110 A - Power steering control unit -J500- 30



AUDI A4 2008 3-pin relay and fuse holder

3-pin relay and fuse holder
Only models with diesel engine
  Note
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 3-pin relay and fuse holderGet access to all wiring diagrams of the car
C -  Auxiliary heater fuse -S126-, 40 A
D -  Auxiliary heater fuse 2 -S328-, 60 A

Only models with diesel engine
  Note
t  Figure​ shows​ right-hand drive​ model.
t  Figure for left-hand drive models .
   
AUDI A4 2008 3-pin relay and fuse holderGet access to all wiring diagrams of the car
C -  Auxiliary heater fuse -S126-, 40 A
D -  Auxiliary heater fuse 2 -S328-, 60 A



AUDI A4 2008 6-pin coupling station of A-pillar, driver side

6-pin coupling station of A-pillar, driver side
.
   
AUDI A4 2008 6-pin coupling station of A-pillar, driver sideGet access to all wiring diagrams of the car
F -  Front passenger seat adjustment thermal fuse 1 -S46-, 15 A
G -  Driver seat adjustment thermal fuse 1 -S44-, 15 A

.
   
AUDI A4 2008 6-pin coupling station of A-pillar, driver sideGet access to all wiring diagrams of the car
F -  Driver seat adjustment thermal fuse 1 -S44-, 15 A
G -  Front passenger seat adjustment thermal fuse 1 -S46-, 15 A



AUDI A4 2008 6-pin coupling station of A-pillar, front passenger side

6-pin coupling station of A-pillar, front passenger side
Fitting location of 6-pin coupling station of A-pillar front passenger side for models with left-hand drive
in front passenger footwell on A-pillar, behind side trim
  Note
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 6-pin coupling station of A-pillar, front passenger sideGet access to all wiring diagrams of the car

for models with right-hand drive only, for models with left-hand drive
77)  applicable from November 2011
  Note
t  Figure​ shows​ right-hand drive​ model.
t  Figure for left-hand drive models .
   
AUDI A4 2008 6-pin coupling station of A-pillar, front passenger sideGet access to all wiring diagrams of the car
F -  ABS control unit fuse 1 -S123-, 40 A
G1 -  ABS control unit fuse 3 -S137-, 25 A
G2 -  ABS control unit fuse 2 -S124-, 10 A / 5 A



AUDI A4 2008 Relay/fuse holder with onboard supply control unit J519

Relay/fuse holder with onboard supply control unit -J519-
Location, relay and fuse holder with onboard supply control unit -J519- for models with left-hand drive:
Below the dash panel, driver side
79)  for models with left-hand drive only, for models with right-hand drive
  Note
t  Figure shows left-hand drive model.
t  Figure for right-hand drive models .
   
AUDI A4 2008 Relay/fuse holder with onboard supply control unit J519Get access to all wiring diagrams of the car
A -  ABS control unit fuse 1 -S123-, 40 A

.
   
AUDI A4 2008 Relay/fuse holder with onboard supply control unit J519Get access to all wiring diagrams of the car
A -  Not assigned

   


AUDI A4 2008 Overview of earth points - saloon models (4-door)

Overview of earth points - saloon models (4-door)
  Note
Overview of Ground Connections - Avant (5-door)
   
AUDI A4 2008 Overview of earth points - saloon models (4-door)Get access to all wiring diagrams of the car
   685 Earth point 1, on front of right longitudinal member
q   Fitting location:
q   Overview of Avant models (5-door):
   638 Earth point, right A-pillar
q   Fitting location:
q   Overview of Avant models (5-door):
   688 Earth point 2, on centre tunnel
q   Fitting location:
q   Overview of Avant models (5-door):
   687 Earth point 1, on centre tunnel
q   Fitting location:
q   Overview of Avant models (5-door):
   730 Earth point 1, on right rear wheel housing
q   Fitting location:
q   Overview of Avant models (5-door):
   62 Earth point, right C-pillar
q   Fitting location:
   51 Earth point, on right in luggage compartment
q   Fitting location:
q   Overview of Avant models (5-door):
   624 Earth point, starter battery
q   Fitting location:
q   Overview of Avant models (5-door):
   61 Earth point, left C-pillar
q   Fitting location:
q   Overview of Avant models (5-door):
   50 Earth point, on left in luggage compartment
q   Fitting location:
q   Overview of Avant models (5-door):
   602 Earth point, in front left footwell
q   Fitting location:
q   Overview of Avant models (5-door):
   639 Earth point, left A-pillar
q   Fitting location:
q   Overview of Avant models (5-door):
   12 Earth point, on left in engine compartment
q   Fitting location:
q   Overview of Avant models (5-door):
   615 Earth point, on left suspension strut
q   Fitting location:
q   Overview of Avant models (5-door):
   671 Earth point 1, on front of left longitudinal member
q   Fitting location:
q   Overview of Avant models (5-door):



AUDI A4 2008 Overview of earth points - Avant models (5-door)

Overview of earth points - Avant models (5-door)
  Note
Overview of earth points - saloon models (4-door)
   
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   685 Earth point 1, on front of right longitudinal member
q   Fitting location:
   638 Earth point, right A-pillar
q   Fitting location:
   688 Earth point 2, on centre tunnel
q   Fitting location:
   687 Earth point 1, on centre tunnel
q   Fitting location:
   730 Earth point 1, on right rear wheel housing
q   Fitting location:
   654 Earth point, right D-pillar
q   Fitting location:
   624 Earth point, starter battery
q   Fitting location:
   61 Earth point, left C-pillar
q   Fitting location:
   50 Earth point, on left in luggage compartment
q   Fitting location:
   51 Earth point, on right in luggage compartment
q   Fitting location:
   602 Earth point, in front left footwell
q   Fitting location:
   639 Earth point, left A-pillar
q   Fitting location:
   12 Earth point, on left in engine compartment
q   Fitting location:
   615 Earth point, on left suspension strut
q   Fitting location:
   671 Earth point 1, on front of left longitudinal member
q   Fitting location:

   
   671 Earth point 1, on front of left longitudinal member
Location:
on longitudinal member, near front left wheel housing
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   615 Earth point, on left suspension strut
Location:
on the front left suspension strut chamber
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   12 Earth point, on left in engine compartment
Location:
Between suspension strut chamber and front left plenum chamber
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   685 Earth point 1, on front of right longitudinal member
Location:
on front of right longitudinal member, behind wheel housing
Torque:
20 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   639 Earth point, left A-pillar
Location:
behind lower left A-pillar trim
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   638 Earth point, right A-pillar
Location:
behind lower right A-pillar trim
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   687 Earth point 1, on centre tunnel
Location:
On the left side of the centre tunnel
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   688 Earth point 2, on centre tunnel
Location:
On the right side of the centre tunnel
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   730 Earth point 1, on right rear wheel housing -arrow-
Location:
near front of rear right wheel housing, under sill panel trim
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   61 Earth point, left C-pillar -arrow-
Location:
Under left C-pillar trim, near rear window
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   62 Earth point, right C-pillar -upper arrow-
Location:
Under right C-pillar trim, near rear window
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   50 Earth point, on left in luggage compartment -arrow-
Location:
Under side trim, left in luggage compartment, near wheel housing
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   51 Earth point, on right in luggage compartment -arrow-
Location:
Under side trim, right in luggage compartment, near wheel housing
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   61 Earth point, left C-pillar -arrow-
Location:
behind the trim of left side panel, behind C-pillar
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   654 Earth point, right D-pillar
Location:
behind upper right D-pillar trim
Torque:
9 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   624 Earth point, starter battery
Location:
under the floor panel in the luggage compartment, right next to the starter battery
Torque:
18 Nm
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
   602 Earth point, in front left footwell -arrow-
Location:
Under the carpet in the driver's footwell
 
AUDI A4 2008 Overview of earth points - Avant models (5-door)Get access to all wiring diagrams of the car
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