10-pin connector, connector D, on driver door control unit
T20a
20-pin connector, black, left A-pillar
B272
Positive connection (30), in main wiring harness
B298
Positive connection 2 (30), in main wiring harness
B302
Positive connection 6 (30), in main wiring harness
R10
Positive connection 1 (30), in driver door wiring harness
#
models with petrol engines
##
models with diesel engines
♦
models without power latching system
♦♦
models with power latching system
Wiring Diagram AUDI A8 2008 - Driver door control unit - driver door exterior handle touch sensor - driver side aerial for entry and start authorisation - entry and start authorisation control unit - driver door exterior handle central locking button
Driver side aerial for entry and start authorisation
T10ah
10-pin connector, connector D, on driver door control unit
T12ah
12-pin connector, connector C, on driver door control unit
T17s
17-pin connector, brown, under driver seat
T20a
20-pin connector, black, left A-pillar
T46a
46-pin connector, black, CAN separating connector left
205
Earth connection, in driver door wiring harness
267
Earth connection 2, in driver door wiring harness
375
Earth connection 10, in main wiring harness
B371
Connection 1 (aerial), in main wiring harness
B372
Connection 2 (aerial), in main wiring harness
•
CAN bus (data wire)
Wiring Diagram AUDI A8 2008 - Driver door control unit - front left door exterior handle illumination bulb - driver side central locking lock unit - driver door power latching system contact switch - driver door exterior handle switch
12-pin connector, connector C, on driver door control unit
V56
Driver door central locking motor
V161
Driver door central locking deadlock function motor
267
Earth connection 2, in driver door wiring harness
*
models with power latching system
**
only models with Keyless-Entry (4F2, 4K5, 4K6, 4K7)
***
not USA
Wiring Diagram AUDI A8 2008 - Driver door control unit - window regulator switch - driver side window regulator motor - operating unit for window regulator in driver door
32-pin connector, connector A, on driver door control unit
V147
Driver side window regulator motor
Wiring Diagram AUDI A8 2008 - Driver door control unit - childproof lock button - power latching control unit for driver door - driver door power latching motor
10-pin connector, connector D, on driver door control unit
T17r
17-pin connector, in driver door
T32h
32-pin connector, connector A, on driver door control unit
V302
Driver door power latching motor
*
models with power latching system
Wiring Diagram AUDI A8 2008 - Driver door control unit - mirror adjustment switch - mirror adjustment change-over switch - adjustment switch for mirror with fold-in feature - interior monitor deactivation switch - alarm system off switch - interior monitor send and receive module 1
32-pin connector, connector A, on driver door control unit
T46b
46-pin connector, black, CAN separating connector right
303
Earth connection 3, in driver door wiring harness
•
CAN bus (data wire)
*
not USA
**
only USA
Wiring Diagram AUDI A8 2008 - Driver door control unit - mirror adjustment motors - heated exterior mirror on driver side - entry light in exterior mirror - potentiometer for horizontal and vertical adjustment of driver side mirror
Lane change assist warning lamp in driver side exterior mirror
L131
Driver side exterior mirror turn signal bulb
L156
Switch illumination bulb
T4aw
4-pin connector, black, in driver door
T10v
10-pin connector, black, in luggage compartment
T12v
12-pin connector, black, on lane change assist control unit
T16b
16-pin connector, black, on operating unit in front of centre console
T16h
16-pin connector, connector B, on driver door control unit
T20a
20-pin connector, black, left A-pillar
T23
23-pin connector, black, connector B, on onboard power supply control unit
Y20
Driver side automatic anti-dazzle exterior mirror
303
Earth connection 3, in driver door wiring harness
*
models with automatic anti-dazzle exterior mirror
**
models with lane change assist
Wiring Diagram AUDI A8 2008 - Driver door control unit - central locking deadlock function warning lamp - driver side interior locking switch - driver side door warning lamp - front left entry light
10-pin connector, connector D, on driver door control unit
T20a
20-pin connector, black, left A-pillar
T32h
32-pin connector, connector A, on driver door control unit
W30
Driver side door warning lamp
W31
Front left entry light
303
Earth connection 3, in driver door wiring harness
R52
Connection (58s), in driver side door wiring harness
*
switch earth output
Wiring Diagram AUDI A8 2008 - Driver door control unit - fuel tank flap release button - rear lid remote release button - driver door storage compartment illumination bulb
2-pin connector, on ambient lighting voltage converter
T2af
2-pin connector, on ambient lighting voltage converter
T17p
17-pin connector, in driver door
T32h
32-pin connector, connector A, on driver door control unit
303
Earth connection 3, in driver door wiring harness
R52
Connection (58s), in driver side door wiring harness
Wiring Diagram AUDI A8 2008 - Front passenger door control unit - front passenger side window regulator fuse - front passenger door power latching motor - power latching control unit for front passenger door
10-pin connector, connector D, on front passenger door control unit
T20b
20-pin connector, black, right A-pillar
V303
Front passenger door power latching motor
206
Earth connection, in door wiring harness, front passenger side
370
Earth connection 5, in main wiring harness
B304
Positive connection 8 (30), in main wiring harness
B305
Positive connection 9 (30), in main wiring harness
R16
Positive connection 1 (30), in front passenger door wiring harness
*
models with power latching system
**
models without power latching system
Wiring Diagram AUDI A8 2008 - Front passenger door control unit - entry and start authorisation control unit - front passenger door exterior handle touch sensor - front passenger side aerial for entry and start authorisation - front passenger door exterior handle central locking button
Front passenger seat adjustment with memory control unit
R135
Front passenger side aerial for entry and start authorisation
T10ai
10-pin connector, connector D, on front passenger door control unit
T12ai
12-pin connector, connector C, on front passenger door control unit
T17t
17-pin connector, brown, under front passenger seat
T20b
20-pin connector, black, right A-pillar
T46b
46-pin connector, black, CAN separating connector right
268
Earth connection 2, in front passenger side door wiring harness
B373
Connection 3 (aerial), in main wiring harness
B374
Connection 4 (aerial), in main wiring harness
•
CAN bus (data wire)
Wiring Diagram AUDI A8 2008 - Front passenger side door control unit - front right door exterior handle illumination bulb - front passenger door exterior handle switch - front passenger side central locking lock unit - front passenger door power latching system contact switch
Front right door exterior handle illumination bulb
T12ai
12-pin connector, connector C, on front passenger door control unit
V57
Front passenger door central locking deadlock function motor
V162
Front passenger door central locking deadlock function motor
268
Earth connection 2, in front passenger side door wiring harness
*
models with power latching system
**
only models with Keyless-Entry (4F2, 4K5, 4K6, 4K7)
Wiring Diagram AUDI A8 2008 - Front passenger door control unit - window regulator switch in front passenger door - front passenger side interior locking switch
32-pin connector, connector A, on front passenger door control unit
V148
Front passenger side window regulator motor
304
Earth connection 3, in front passenger side door wiring harness
R53
Connection (58s), in front passenger side door wiring harness
*
switch earth output
Wiring Diagram AUDI A8 2008 - Front passenger door control unit - central locking deadlock function warning lamp on front passenger side - front right entry light - front passenger side door warning lamp - front passenger door storage compartment illumination
Central locking deadlock function warning lamp on front passenger side
L109
Front passenger door opener illumination bulb
L161
Front passenger door storage compartment illumination
L165
Front passenger door ambient lighting bulb
T2ae
2-pin connector, on ambient lighting voltage converter
T2af
2-pin connector, on ambient lighting voltage converter
T10ai
10-pin connector, connector D, on front passenger door control unit
T17q
17-pin connector, in front passenger door
T20b
20-pin connector, black, right A-pillar
T32i
32-pin connector, connector A, on front passenger door control unit
W32
Front right entry light
W36
Front passenger side door warning lamp
304
Earth connection 3, in front passenger side door wiring harness
R53
Connection (58s), in front passenger side door wiring harness
Wiring Diagram AUDI A8 2008 - Front passenger door control unit - front passenger side mirror adjustment motors - front passenger side entry light in exterior mirror - front passenger side heated exterior mirror - potentiometer for horizontal and vertical adjustment of front passenger side mirror
16-pin connector, connector B, on front passenger door control unit
V25
Front passenger side mirror adjustment motor
V122
Front passenger side fold-in mirror motor
V150
Front passenger side mirror adjustment motor
W53
Front passenger side entry light in exterior mirror
Z5
Front passenger side heated exterior mirror
107
Earth connection, in external mirror wiring harness
*
mirror with fold-in feature
Wiring Diagram AUDI A8 2008 - Front passenger door control unit - lane change assist warning lamp in front passenger side exterior mirror - front passenger side exterior mirror turn signal bulb - front passenger side automatic anti-dazzle exterior mirror
Lane change assist warning lamp in front passenger side exterior mirror
L132
Front passenger side exterior mirror turn signal bulb
T4ax
4-pin connector, black, in front passenger door
T10v
10-pin connector, black, in luggage compartment
T12w
12-pin connector, black, on lane change assist control unit 2
T16i
16-pin connector, connector B, on front passenger door control unit
T20b
20-pin connector, black, right A-pillar
T23
23-pin connector, black, connector B, on onboard power supply control unit
Y21
Front passenger side automatic anti-dazzle exterior mirror
B565
Connection 32 in main wiring harness
*
models with automatic anti-dazzle exterior mirror
**
models with lane change assist
Wiring Diagram AUDI A8 2008 - Rear left door control unit - rear left door exterior handle touch sensor - driver side rear entry and start authorisation aerial - power latching control unit for rear left door - rear left door power latching motor - rear left side roller blind control unit
Driver side rear entry and start authorisation aerial
T10ak
10-pin connector, connector C, on rear left door control unit
T12ak
12-pin connector, connector B, on rear left door control unit
T20c
20-pin connector, black, left B-pillar
T46a
46-pin connector, black, CAN separating connector left
V307
Rear left door power latching motor
V332
Rear left side roller blind motor
207
Earth connection, in rear left door wiring harness
366
Earth connection 1, in main wiring harness
R19
Positive connection 1 (30), in rear left door wiring harness
•
CAN bus (data wire)
*
models with power latching system
**
models with side roller blind
Wiring Diagram AUDI A8 2008 - Rear left door control unit - rear left central locking lock unit - rear left door exterior handle switch - rear left exterior door handle illumination bulb
2-pin connector, on ambient lighting voltage converter
T2af
2-pin connector, on ambient lighting voltage converter
T16k
16-pin connector, connector A, on rear left door control unit
W33
Rear left entry light
W37
Rear left door warning lamp
408
Earth connection 3, in rear left door wiring harness
R54
Connection (58s), in rear left door wiring harness
*
switch earth output
Wiring Diagram AUDI A8 2008 - Rear left door control unit - rear left window regulator switch - in door - rear left ashtray illumination bulb - rear left window regulator motor - rear left door storage compartment illumination bulb
Rear left door storage compartment illumination bulb
T4f
4-pin connector, in rear left door
T4h
4-pin connector, in rear left door
T16k
16-pin connector, connector A, on rear left door control unit
V26
Rear left window regulator motor
408
Earth connection 3, in rear left door wiring harness
R54
Connection (58s), in rear left door wiring harness
Wiring Diagram AUDI A8 2008 - Rear right door control unit - rear right door exterior handle touch sensor - front passenger side rear entry and start authorisation aerial - power latching control unit for rear right door - rear right door power latching motor - rear right side roller blind control unit - rear right door exterior handle central locking button
12-pin connector, connector B, on rear right door control unit
V97
Rear right door central locking motor
V143
Rear right childproof lock motor
V164
Rear right door central locking deadlock function motor
351
Earth connection 2, in rear right door wiring harness
*
models with power latching system
**
models with childproof lock
***
not USA
Wiring Diagram AUDI A8 2008 - Rear right door control unit - rear right door control unit - rear right door warning lamp - rear right interior locking switch - rear right door opener illumination bulb - rear right door ambient lighting bulb
2-pin connector, on ambient lighting voltage converter
T2af
2-pin connector, on ambient lighting voltage converter
T16l
16-pin connector, connector A, on rear right door control unit
W34
Rear right entry light
W38
Rear right door warning lamp
409
Earth connection 3, in rear right door wiring harness
R55
Connection (58s), in rear right door wiring harness
*
switch earth output
Wiring Diagram AUDI A8 2008 - Rear right door control unit - rear right window regulator motor - rear right window regulator switch - in door - rear right ashtray illumination bulb - rear right door storage compartment illumination bulb
10-pin connector, black, connector C, on convenience system central control unit
T32b
32-pin connector, connector B, on convenience system central control unit
T46b
46-pin connector, black, CAN separating connector right
393
Earth connection 28, in main wiring harness
B163
Positive connection 1 (15), in interior wiring harness
B273
Positive connection (15), in main wiring harness
B299
Positive connection 3 (30), in main wiring harness
B316
Positive connection 2 (30a), in main wiring harness
B492
Positive connection 3 (15), in interior wiring harness
•
CAN bus (data wire)
Wiring Diagram AUDI A8 2008 - Convenience system central control unit - rear lid - switch in lock cylinder for rear lid - anti-theft alarm system - central locking system - release button for rear lid lock cylinder - rear lid central locking motor - alarm horn
10-pin connector, black, connector C, on convenience system central control unit
T32b
32-pin connector, connector B, on convenience system central control unit
V53
Rear lid central locking motor
376
Earth connection 11, in main wiring harness
386
Earth connection 21, in main wiring harness
387
Earth connection 22, in main wiring harness
B305
Positive connection 9 (30), in main wiring harness
Wiring Diagram AUDI A8 2008 - Convenience system central control unit - rear lid electric release motor - rear lid control unit - power latching system limit switch - luggage compartment locked - anti-theft and tilt system control unit - power latching control unit - tank filler flap locking motor
5-pin connector, in luggage compartment, power latching rear lid
T10q
10-pin connector, black, connector C, on convenience system central control unit
T15c
15-pin connector, brown, connector A, on convenience system central control unit
T32b
32-pin connector, connector B, on convenience system central control unit
V120
Rear lid lock motor
V155
Tank filler flap locking motor
V254
Rear lid electric release motor
394
Earth connection 29, in main wiring harness
B487
Connection 23 in main wiring harness
Wiring Diagram AUDI A8 2008 - Convenience system central control unit - luggage compartment light - rear lid light - button to close rear lid in luggage compartment
J431 - Headlight range control regulator V48 - Left headlight range control motor V49 - Right headlight range control motor
15
5
-
SB5 - Fuse 5 on fuse holder B
10 A 5 A¹)
-
J285 - Control unit with display in dash panel insert J533-Data bus diagnostic interface²)
30
6
-
SB6 - Fuse 6 on fuse holder B
10 A
-
J527 - Steering column electronics control unit
30
7
-
SB7 - Fuse 7 on fuse holder B
5 A
-
T16 - 16-pin connector, diagnostic connector
30
8
-
SB8 - Fuse 8 on fuse holder B
5 A
-
G266 - Oil level and oil temperature sender¹) T16 - Connector, 16-pin diagnostic connector
15
9
-
SB9 - Fuse 9 on fuse holder B
10 A 5 A¹)
-
J104 - ABS control unit J527 - Steering column electronics control unit
15
10
-
SB10 - Fuse 10 on fuse holder B
5 A
-
G266 - oil level and oil temperature sender²) J533 - Data bus diagnostic interface¹)
15
11
-
SB11 - Fuse 11 on fuse holder B
10 A
J759 - Lane departure warning control unit³)
15
12
-
SB12 - Fuse 12 on fuse holder B
5 A
-
F - Brake light switch
30
¹) from model year 2004
²) up to model year 2003
³) from September 2007
Audi A8
Fitting Locations
No. 802 / 6
No.
Current Flow Diagram designation
Nominal value
Function/component
Terminal
25
-
SB25 - Fuse 25 on fuse holder B
40 A
-
J400 - Wiper motor control unit
30
26
-
SB26 - Fuse 26 on fuse holder B
15 A³) 30 A²)
-
J608 - Special vehicle control unit³) U18 - 12 V socket 2²) U19 - 12 V socket 3²)
30
27
-
SB27 - Fuse 27 on fuse holder B
25 A
-
J104 - ABS control unit
30
28
-
Vacant
29
-
SB29 - Fuse 29 on fuse holder B
1 A
-
- Switch illumination
58s
30
-
Vacant
31
-
SB31 - Fuse 31 on fuse holder B
30 A
-
J519 - Onboard power supply control unit
30
32
-
SB32 - Fuse 32 on fuse holder B
5 A⁵)
-
J685 - Display unit for front information display and operating unit control unit ⁵)
30
33
-
SB33 - Fuse 33 on fuse holder B
25 A
-
Z42-Rear left footwell heater element
75
34
-
Vacant
35
-
Vacant
36
-
SB36 - Fuse 36 on fuse holder B
5 A
J769 - Lane change assist control unit⁴)
15
37
-
SB37 - Fuse 37 on fuse holder B
15 A
-
J698 - Refrigerator box³)
15
38
-
SB38 - Fuse 38 on fuse holder B
30 A
-
J519 - Onboard power supply control unit
30
39
-
SB39 - Fuse 39 on fuse holder B
15 A 7.5 A¹)
-
J386 - Driver door control unit
30
¹) from model year 2004
²) up to model year 2004
³) from model year 2006
⁴) from September 2007
⁵) from September 2008
Audi A8
Fitting Locations
No. 802 / 8
Audi A8
Fitting Locations
No. 802 / 9
No.
Current Flow Diagram designation
Nominal value
Function/component
Terminal
8
-
SB8 - Fuse 8 on fuse holder B
10 A
-
J544 - Throttle valve module 2 J725 - Turbocharger 2 control unit N144 - Left electrohydraulic engine mounting solenoid valve N205 - Inlet camshaft control valve 1 N208 - Inlet camshaft control valve N213 - Exhaust gas recirculation valve 2 N321 - Exhaust flap 1 valve N382 - Torque rod valve V51 - Continued coolant circulation pump V275 - Intake manifold flap 2 motor
87
9
-
SB9 - Fuse 9 on fuse holder B
5 A
-
J104 - ABS control unit J527 - Steering column electronics control unit
15
10
-
SB10 - Fuse 10 on fuse holder B
10 A
-
J197 - Adaptive suspension control unit
15
11
-
SB11 - Fuse 11 on fuse holder B
10 A
-
J759 - Lane departure warning control unit
15
12
-
SB12 - Fuse 12 on fuse holder B
5 A
7.5 A¹)
-
J523 - Front information display and operating unit control unit J794 - Control unit for information electronics 1¹)
30
13
-
SB13 - Fuse 13 on fuse holder B
10 A
-
J412 - Telephone operating electronics control unit J526 - Mobile telephone operating electronics control unit R36 - Telephone transmitter and receiver unit R115 - Chip card reader for telephone - Preparation for mobile telephone
30
5 A¹)
-
R86 - Aerial amplifier for mobile telephone¹) R126 - Telephone bracket¹)
30
¹) from September 2008
Audi A8
Fitting Locations
No. 802 / 11
No.
Current Flow Diagram designation
Nominal value
Function/component
Terminal
28
-
SB28 - Fuse 28 on fuse holder B
5 A
-
J17 - Fuel pump relay J49 - Electric fuel pump 2 relay J248 - Diesel direct injection system control unit J569 - Brake servo relay J623 - Engine control unit
15
29
-
SB29 - Fuse 29 on fuse holder B
15 A
-
N30.. - Injector
87
30
-
SB30 - Fuse 30 on fuse holder B
30 A
-
N...- Ignition coils with output stage J623 - Engine control unit
87
31
-
SB31 - Fuse 31 on fuse holder B
20 A
40 A
-
G23 - Right fuel pump N115 - Active charcoal filter system solenoid valve 2 (USA) V144 - Fuel system diagnostic pump (USA) J538 - Fuel pump control unit
87
32
-
SB32 - Fuse 32 on fuse holder B
10 A 5 A
-
J217 - Automatic gearbox control unit 01J, 01T J217 - Automatic gearbox control unit 09E, 09L
F189 - Tiptronic switch F305 - Gear selector position P switch N110 - Selector lever lock solenoid
15
4
-
SC4 - Fuse 4 on fuse holder C
15 A
-
J217 - Automatic gearbox control unit 01J/01T
87
5
-
SC5-Fuse 5 on fuse holder C
15 A
-
G70 - Air mass meter J299 - Secondary air pump relay J338 - Throttle valve module J724 - Turbocharger 1 control unit N18 - Exhaust gas recirculation valve N112 - Secondary air inlet valve N145 - Right electrohydraulic engine mounting solenoid valve N382 - Torque rod valve V157 - Intake manifold flap motor
R41 - CD changer R92 - CD ROM drive R129 - Video recorder / DVD player
30
15
-
SC15 - Fuse 15 on fuse holder C
5 A
-
J644 - Energy management control unit
30
16
-
SC16 - Fuse 16 on fuse holder C
5 A 7.5 A³)
-
N79 - Heater element for crankcase breather
87
17
-
SC17 - Fuse 17 on fuse holder C
5 A¹)
-
- Vacant V7 - Radiator fan V177 - Radiator fan 2
87
18
-
SC18 - Fuse 18 on fuse holder C
5 A
-
- Vacant (from January 2003) J234 - Airbag control unit²) J706 - Seat occupied recognition control unit (only USA)²) L34 - Map reading light bulb (up to December 2002)
15
19
-
SC19 - Fuse 19 on fuse holder C
5 A
-
G70 - Air mass meter
15
20
-
SC20 - Fuse 20 on fuse holder C
5 A
-
J526 - Telephone and telematics control unit (USA) J672 - Driver seat ventilation control unit J673 - Front passenger seat ventilation control unit
75
21
-
SC21 - Fuse 21 on fuse holder C
15 A 5 A
-
J248 - Diesel direct injection system control unit J271 - Motronic current supply relay J623 - Engine control unit
Digital sound package control unit -J525-, TV tuner -R78-, navigation system with CD drive control unit -J401-, parking aid control unit -J446-, radio -R-, speech input control unit -J507- and digital radio -R147-
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