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AUDI A4 2005 — Police, criminal investigation department (C.I.D), vehicles (doctor on call vehicle, civil vehicle, fire brigade vehicle) . Wiring diagrams, Pin Connector, Location

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Wiring Diagram AUDI A4 2005 - Second battery wiring harness



Wiring Diagram AUDI A4 2005 - Second battery wiring harness
A1Second battery
J7Battery isolation relay
S652nd battery fuse
S171Battery isolation relay fuse
T6f6-pin connector, light-pink, coupling station on left of A-pillar
T17e17-pin connector, white, coupling station on electronics box, plenum chamber
U1912 V socket 3
U2012 V socket 4
   33 Earth point, on right behind dash panel
   50 Earth point, on left in luggage compartment
   238 Earth connection 1, in interior wiring harness
   284 Earth connection 6, in interior wiring harness
   501 Screw connection 2 (30), on relay plate
   A17 Connection (61), in dash panel wiring harness
   A52 Positive connection 2 (30), in dash panel wiring harness
   A98 Positive connection 4 (30), in dash panel wiring harness
   P3 Positive connection (30), in 2nd battery wiring harness
*For models with second battery only
**For models without second battery only
***⇒ Applicable engine Current Flow Diagram

Wiring Diagram AUDI A4 2005 - Fuses - two-way radio - 12 V socket



Wiring Diagram AUDI A4 2005 - Fuses - two-way radio - 12 V socket
E722-way radio switch
J608Special vehicle control unit
R8Two-way radio
S291Special vehicle fuse 1
S292Special vehicle fuse 2
S293Special vehicle fuse 3
S297Special vehicle fuse 7
U512 V socket
U1812 V socket 2
   49 Earth point, near convenience system central control unit
   81 Earth connection 1, in dash panel wiring harness
   284 Earth connection 6, in interior wiring harness
   285 Earth connection 7, in interior wiring harness
   B252 Positive connection (30, police), in interior wiring harness
   B253 Positive connection 1 (30a, police), in interior wiring harness
   B255 Positive connection 3 (30a, police), in interior wiring harness
   B258 Positive connection 3 (87, police), in interior wiring harness

Wiring Diagram AUDI A4 2005 - Weapons box - fuses



Wiring Diagram AUDI A4 2005 - Weapons box - fuses
E368Weapons box button
J59X-contact relief relay
J519Onboard supply control unit
S294Special vehicle fuse 4
S295Special vehicle fuse 5
S296Special vehicle fuse 6
T32b32-pin connector, grey, on onboard supply control unit
V247Weapons box lock motor
   81 Earth connection 1, in dash panel wiring harness
   284 Earth connection 6, in interior wiring harness
   A34 Connection (75x), in dash panel wiring harness
   A57 Positive connection 3 (30), in dash panel wiring harness
   B254 Positive connection 2 (30a, police), in interior wiring harness
   B256 Positive connection (75x, police), in interior wiring harness
*For police, criminal investigation department (C.I.D) only
**Near dual tone horn relay, fitted in wiring harness

Wiring Diagram AUDI A4 2005 - Blue flashing light relay (rear lid) - transporter with socket - 12 V - 230 V



Wiring Diagram AUDI A4 2005 - Blue flashing light relay (rear lid) - transporter with socket - 12 V - 230 V
J617Blue flashing light relay
U13Transformer with socket (12 V -220 V)
T1bSingle connector, brown
T4t4-pin connector, black, for turn signals in luggage compartment
   285 Earth connection 7, in interior wiring harness

Wiring Diagram AUDI A4 2005 - Flashing lights - yellow - in rear lid



Wiring Diagram AUDI A4 2005 - Flashing lights - yellow - in rear lid
F123Rear lid contact switch for anti-theft alarm system
J29Blocking diode
J519Onboard supply control unit
J618Amber flashing light relay 1
J619Amber flashing light relay 2
L142Flashing light 1, yellow
L143Flashing light 2, yellow
T4t4-pin connector, black, for turn signals in luggage compartment
T2323-pin connector, black, on onboard supply control unit
T32b32-pin connector, grey, on onboard supply control unit
   87 Earth connection 2, in rear wiring harness
   218 Earth connection 1, in rear lid wiring harness
   285 Earth connection 7, in interior wiring harness
   A5 Positive connection (right turn signal), in dash panel wiring harness
   A6 Positive connection (left turn signal), in dash panel wiring harness
   B154 Connection 1 (DCt), in interior wiring harness
*Near amber flashing light relay 1, fitted in wiring harness
**For Avant models ⇒ see applicable Current Flow Diagram: Avant models, rear

Wiring Diagram AUDI A4 2005 - Tachograph



Wiring Diagram AUDI A4 2005 - Tachograph
G394Tachograph pulse sender
J104ABS control unit
J285Control unit in dash panel insert
J620Tachograph isolation relay
J621Tachograph control unit
J622Impulse distributor control unit
T10u10-pin connector, dark brown, near tachograph
T17b17-pin connector, green, coupling station on left of A-pillar
T32a32-pin connector, green, on dash panel insert
   284 Earth connection 6, in interior wiring harness
   A27 Connection (speed signal), in dash panel wiring harness
   A175 Connection (58s), in dash panel wiring harness

Wiring Diagram AUDI A4 2005 - Flasher relay for headlight main beam alarm system



Wiring Diagram AUDI A4 2005 - Flasher relay for headlight main beam alarm system
J182Flasher relay for headlight main beam alarm system
J330Main beam relay
J519Onboard supply control unit
M30Left main beam bulb
M32Right main beam bulb
T17a17-pin connector, red, coupling station on left of A-pillar
T17c17-pin connector, red, coupling station on right of A-pillar
T2323-pin connector, black, on onboard supply control unit
T32b32-pin connector, grey, on onboard supply control unit
   285 Earth connection 7, in interior wiring harness
   B132 Connection (number plate lights), in interior wiring harness
   E116 Connection (56a, right), in dash panel wiring harness
   E117 Connection (56a, left), in dash panel wiring harness

Wiring Diagram AUDI A4 2005 - Siren system



Wiring Diagram AUDI A4 2005 - Siren system
E75Alarm system switch
H24Power horn 1
H25Power horn 2
J408Siren system relay
L139Magnetic flashing light
T10q10-pin connector, violet, coupling station on right of A-pillar
T10t10-pin connector, violet, in centre console
   284 Earth connection 6, in interior wiring harness
   285 Earth connection 7, in interior wiring harness
   B257 Positive connection 3 (84b, police), in interior wiring harness

Wiring Diagram AUDI A4 2005 - Connection for signal system (roof lights)



Wiring Diagram AUDI A4 2005 - Connection for signal system (roof lights)
J4Dual tone horn relay
T10r10-pin connector, brown, coupling station on right of A-pillar
   81 Earth connection 1, in dash panel wiring harness
   A90 Connection (dual tone horn), in dash panel wiring harness
*Connection for signal system

Wiring Diagram AUDI A4 2005 - Distribution box - starter inhibitor relay



Wiring Diagram AUDI A4 2005 - Distribution box - starter inhibitor relay
BStarter
DIgnition/starter switch
J433Starter inhibitor relay
J771Blocking relay
S59220 V automatic personnel protection circuit breaker
T1fSingle connector, white, near ignition/starter switch
T3j3-pin connector, red, near distribution box
T17j17-pin connector, brown, coupling station on electronics box, plenum chamber
TV15Wiring connector
TV24Distribution box
U8220 V external socket, 220 V, 110 V
U11Interior socket, 220 V, 110 V
   50 Earth point, on left in luggage compartment
*⇒ Applicable engine Current Flow Diagram


AUDI A4 2005



AUDI A4 2005 Overview of earth points in engine compartment

Overview of earth points in engine compartment
   
AUDI A4 2005 Overview of earth points in engine compartment
1 -  Earth point, in battery box -11-
q   Location ⇒ page → 801/6
2 -  Earth point, starter battery -624-
q   Location → page 801/11
3 -  Earth point, on left in engine compartment -12-
q   not for 2,0 l engine FSI, not for 2,5 l engine TDI, location → page 801/6
q   only for 2.0 l FSI motor, location → page 801/7
q   only for 2,5 l engine TDI, location → page 801/7
4 -  Earth point, on front apron -26-
q   Location → page 801/10
5 -  Earth point, near coil -19-
q   Location → page 801/10
6 -  Earth point, on engine block -18-
q   only for 1.8 l engine, location → page 801/8
q   only for 2.0 l FSI motor, location → page 801/9
q   only for 3.0 l engine, location → page 801/9

   

Audi A4 Fitting Locations No.  801 / 2
   
Overview of earth points in vehicle interior
AUDI A4 2005 Overview of earth points in engine compartment
1 -  Earth point, lower part of right A-pillar -43-
q   Location → page 801/13
2 -  Earth point, on right behind dash panel -33-
q   Location → page 801/12
3 -  Earth point (audio), under centre console, front -610-
q   Location → page 801/15
4 -  Earth point, lower part of right B-pillar -78-
q   Location → page 801/15
5 -  Earth point, lower part of left B-pillar -77-
q   Location → page 801/14
6 -  Earth point, near convenience system central control unit -49-
q   Location → page 801/14

   

Audi A4 Fitting Locations No.  801 / 3
   
AUDI A4 2005 Overview of earth points in engine compartment
7 -  Earth point, lower part of left A-pillar -44-
q   Location → page 801/13
8 -  Earth point, on left behind dash panel -32-
q   Location → page 801/12

   

Audi A4 Fitting Locations No.  801 / 4
Overview of earth points in luggage compartment - saloon models
  Note:
♦ Overview of luggage compartment - Avant models → Page 801/5
   
AUDI A4 2005 Overview of earth points in engine compartment
1 -  Earth point, right D-pillar -654-
q   Location → page 801/17
2 -  Earth point in luggage compartment -701-
q   Location → page 801/17
3 -  Earth point, left D-pillar -653-
q   Location → page 801/16
4 -  Earth point, on left in luggage compartment -50-
q   Location → page 801/16

   

Audi A4 Fitting Locations No.  801 / 5
   
Overview of earth points in luggage compartment - Avant models
AUDI A4 2005 Overview of earth points in engine compartment
1 -  Earth point, right D-pillar -654-
q   Location → page 801/20
2 -  Earth point, on right in rear lid -53-
q   Location → page 801/19
3 -  Earth point, left D-pillar -653-
q   Location → page 801/20
4 -  Earth point, on left in rear lid -52-
q   Location → page 801/19
5 -  Earth point, on left in luggage compartment -50-
q   Location → page 801/18

   

Audi A4 Fitting Locations No.  801 / 6
   


AUDI A4 2005 Earth point, in engine compartment

Earth point, in engine compartment
   11 Earth point, in battery box -arrow-
 
AUDI A4 2005 Earth point, in engine compartment
Torque: 20 Nm
   12 Earth point, in engine compartment, left -arrow-
on bulkhead
Torque: 9 Nm
not for 2,0 l engine FSI
not for 2,5 l engine TDI
 
AUDI A4 2005 Earth point, in engine compartment

Audi A4 Fitting Locations No.  801 / 7
   
   12 Earth point, in engine compartment, left -arrow-
on bulkhead
Torque: 9 Nm
 
AUDI A4 2005 Earth point, in engine compartment
only for 2,0 l engine FSI
   12 Earth point, in engine compartment, left -arrow-
on bulkhead
Torque: 9 Nm
only for 2,5 l engine TDI
 
AUDI A4 2005 Earth point, in engine compartment

Audi A4 Fitting Locations No.  801 / 8
   
   18 Earth point on engine block -arrow-
Torque: 8 Nm
 
AUDI A4 2005 Earth point, in engine compartment
only for 1.8 l engine
   18 Earth point on engine block -arrow-
Torque: 8 Nm
only for 2.0 l engine
 
AUDI A4 2005 Earth point, in engine compartment

Audi A4 Fitting Locations No.  801 / 9
   
   18 Earth point on engine block -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth point, in engine compartment
only for 2,0 l engine FSI
   18 Earth point on engine block -arrow-
Torque: 8 Nm
only for 3.0 l engine
 
AUDI A4 2005 Earth point, in engine compartment

Audi A4 Fitting Locations No.  801 / 10
   
   19 Earth point, near coil -arrow-
Torque: 8 Nm
 
AUDI A4 2005 Earth point, in engine compartment
only for 4.2 l engine
   26 Earth point, on front apron -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth point, in engine compartment

Audi A4 Fitting Locations No.  801 / 11
   
   624 Earth point, starter battery -arrow-
Torque: 7.5 Nm
 
AUDI A4 2005 Earth point, in engine compartment

Audi A4 Fitting Locations No.  801 / 12
   


AUDI A4 2005 Earth points, in interior

Earth points, in interior
   32 Earth point behind dash panel on left -arrow-
 
AUDI A4 2005 Earth points, in interior
Torque: 9 Nm
   33 Earth point behind dash panel on right -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth points, in interior

Audi A4 Fitting Locations No.  801 / 13
   
   43 Earth point, lower part of right A-pillar -arrow-
 
AUDI A4 2005 Earth points, in interior
Torque: 9 Nm
   44 Earth point, lower part of left A-pillar -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth points, in interior

Audi A4 Fitting Locations No.  801 / 14
   
   49 Earth point, near convenience system central control unit -arrow-
 
AUDI A4 2005 Earth points, in interior
Torque: 9 Nm
   77 Earth point, lower part of left B-pillar -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth points, in interior

Audi A4 Fitting Locations No.  801 / 15
   
   78 Earth point, lower part of right B-pillar -arrow-
 
AUDI A4 2005 Earth points, in interior
Torque: 9 Nm
   610 Earth point (audio), under centre console, front -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth points, in interior

Audi A4 Fitting Locations No.  801 / 16
   


AUDI A4 2005 Earth point, in luggage compartment - saloon models

Earth point, in luggage compartment - saloon models
   50 Earth point, on left in luggage compartment -arrow-
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models
Torque: 9 Nm
   653 Earth point, left D-pillar -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models

Audi A4 Fitting Locations No.  801 / 17
   
   654 Earth point, right D-pillar -arrow-
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models
Torque: 9 Nm
   701 Earth point, in luggage compartment -arrow-
Torque: 20 Nm
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models

Audi A4 Fitting Locations No.  801 / 18
   
Earth point, in luggage compartment - Avant models
   50 Earth point, on left in luggage compartment -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models

Audi A4 Fitting Locations No.  801 / 19
   
   52 Earth point, on left in rear lid -arrow-
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models
Torque: 9 Nm
   53 Earth point, on right in rear lid -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models

Audi A4 Fitting Locations No.  801 / 20
   
   653 Earth point, left D-pillar -arrow-
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models
Torque: 9 Nm
   654 Earth point, right D-pillar -arrow-
Torque: 9 Nm
 
AUDI A4 2005 Earth point, in luggage compartment - saloon models


AUDI A4 2005 Overview of relay

Overview of relay
   
AUDI A4 2005 Overview of relay
1 -  Relay carrier (3-pin)
q   Components: -J359-, -J360-, -J608-
q   Location → page 803/4
2 -  Relay carrier (9-pin) with onboard supply control unit
q   Components: -J4-, -J9-, -J17-, -J53-, -J59-, -J236-, -J569-, -J695-
q   Location up to July 2004 → page 803/5
q   Location from August 2004 → page 803/6
q   Location component -J569- for engine code BNS → page 803/19
q   Location component -J17- for some engine variants ⇒ Item → 5 , page → 803/2
3 -  Relay carrier (4-pin) with screw connection
q   Components: -J662-, -J663-, -J610-
q   Location → page 803/7
4 -  Relay carrier for special vehicles
q   Components: -J85-, -J182-, -J330-, -J408-, -J430-, -J461-, -J462-, -J463-, -J608-
q   Location → page 803/22

   

Audi A4 Fitting Locations No.  803 / 2
   
AUDI A4 2005 Overview of relay
5 -  Relay carrier (4-pin)
q   Components: -J17-, -J52-, -J151-, -J179-, -J207-, -J271-, -J299-, -J317-, -J363-, -J434-, -J496-, -J569-, -J757-
q   Location for petrol engines, up to July 2004 → page 803/8
q   Location for diesel engines, up to July 2004 → page 803/9
q   Location for engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD → page 803/10
q   Location for engine codes BSG, BPP, BTP, BKN, ASB → page 803/11
q   Location for engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK → page 803/12
q   Location for engine code ALZ → page 803/13
q   Location for engine code ALT → page 803/14
q   Location for engine code BDG → page 803/15
q   Location for engine codes BFB, BBK, BHF → page 803/16
q   Location for engine code AWA → page 803/17

   

Audi A4 Fitting Locations No.  803 / 3
   
AUDI A4 2005 Overview of relay
t  Location for engine codes AUK, BKH → page 803/18
t  Location for engine code BNS → page 803/19
t  Location for engine code BBJ, with manual gearbox or multitronic → page 803/20
t  Location for engine code BBJ with AG5 → page 803/21

   

Audi A4 Fitting Locations No.  803 / 4
Position of relays, relay carrier (3-pin)
   
Location:
Driver side dash panel
Position of relays:
1 -  Special vehicle control unit (driving school vehicle, taxi) -J608-
2 -  Low heat output relay -J359-
3 -  High heat output relay -J360-
 
AUDI A4 2005 Overview of relay

Audi A4 Fitting Locations No.  803 / 5


AUDI A4 2005 Position of relays, relay carrier (9-pin) with onboard supply control unit, up to July 2004

Position of relays, relay carrier (9-pin) with onboard supply control unit, up to July 2004
   
Location:
Driver side dash panel, behind the relay carrier (3-pin)
Position of relays:
1 -  Fuel pump relay -J17-
2 -  Servotronic control unit -J236-
3 -  Dual tone horn relay -J4-
4 -  Brake servo relay -J569-
5 -  Special vehicle control unit (driving school vehicle, taxi) -J608-
6 -  X-contact relief relay -J59-
 
AUDI A4 2005 Position of relays, relay carrier (9-pin) with onboard supply control unit, up to July 2004

Audi A4 Fitting Locations No.  803 / 6


AUDI A4 2005 Position of relays, relay carrier (9-pin) with onboard supply control unit, from August 2004

Position of relays, relay carrier (9-pin) with onboard supply control unit, from August 2004
   
Location:
Driver side dash panel, behind the relay carrier (3-pin)
Position of relays:
1 -  Fuel pump relay -J17-
2 -  Servotronic control unit -J236-
3 -  Starter motor relay 2 ¹) -J695-
4 -  Starter motor relay ¹) -J53-
 -  Brake servo relay ²), ³) -J569-
5 -  Heated rear window relay -J9-
6 -  X-contact relief relay -J59-
8 -  Dual tone horn relay -J4-
¹) for engine codes AUK, BKH, BNS only
²) not for engine codes AUK, BKH
³) applicable up to model year 2005
⁴) applicable from model year 2006
 
AUDI A4 2005 Position of relays, relay carrier (9-pin) with onboard supply control unit, from August 2004

Audi A4 Fitting Locations No.  803 / 7


AUDI A4 2005 Position of relays, relay carrier (4-pin) with screw connection

Position of relays, relay carrier (4-pin) with screw connection
   
Location:
Driver side dash panel
Position of relays:
3 -  Engine power reduction relay 1 (driving school vehicle) -J662-
4 -  Engine power reduction relay 2 (driving school vehicle) -J663-
 -  Alarm on and hands-free system control unit (taxi) -J610-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin) with screw connection

Audi A4 Fitting Locations No.  803 / 8


AUDI A4 2005 Position of relays, relay carrier (4-pin), petrol engines, up to July 2004

Position of relays, relay carrier (4-pin), petrol engines, up to July 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1 -  Automatic gearbox relay (multitronic) -J60-
1.1 -  Continued coolant circulation relay (V6) -J151-
2 -  Secondary air pump relay -J299-
3 -  Motronic current supply relay -J271-
 -  Turbocharger coolant pump control unit -J155-
 -  Current supply relay for Simos control unit -J363-
4 -  Automatic gearbox relay (AG5) -J60-
 -  Starter inhibitor and reversing light relay (multitronic/AG6) -J226-
 -  Starter inhibitor relay, clutch pedal switch -J434-
4.1 ¹) -  Automatic gearbox relay (AG5) -J60-
 -  Starter inhibitor relay -J433-
 -  Starter inhibitor relay, clutch pedal switch -J434-
4.2 ¹) -  Reversing light relay
¹) applicable from model year 2004
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), petrol engines, up to July 2004

Audi A4 Fitting Locations No.  803 / 9


AUDI A4 2005 Position of relays, relay carrier (4-pin), diesel engines, up to July 2004

Position of relays, relay carrier (4-pin), diesel engines, up to July 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.2 -  Fuel pump relay -J17-
2³) -  Terminal 30 voltage supply relay -J317-
2 ⁴) -  Glow plug relay -J52-
3 ³) -  Automatic glow period control unit -J179-
3 ⁴) -  Terminal 30 voltage supply relay -J317-
4 -  Starter inhibitor and reversing light relay -J226-
 -  Automatic gearbox relay -J60-
4.1 -  Automatic gearbox relay -J60-
E -  Fan for control unit -V274-
¹) applicable from model year 2002
²) applicable from model year 2004
³) for models with engine code BKE only
⁴) not for models with engine code BKE
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), diesel engines, up to July 2004

Audi A4 Fitting Locations No.  803 / 10


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004

Position of relays, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.1 -  Fuel pump relay -J17-
1.2 -  Starter inhibitor relay -J207-
2 -  Terminal 30 voltage supply relay -J317-
3 -  Automatic glow period control unit -J179-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004

Audi A4 Fitting Locations No.  803 / 11


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004

Position of relays, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.1 -  Fuel pump relay -J17-
1.2 -  Starter inhibitor relay -J207-
2 -  Terminal 30 voltage supply relay -J317-
3 -  Automatic glow period control unit -J179-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004

Audi A4 Fitting Locations No.  803 / 12


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004

Position of relays, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.2 -  Starter inhibitor relay -J217-
2 -  Motronic current supply relay -J271-
3 -  Engine component current supply relay -J757-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004

Audi A4 Fitting Locations No.  803 / 13


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code ALZ, from August 2004

Position of relays, relay carrier (4-pin), engine code ALZ, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
2 -  Current supply relay for Simos control unit -J363-
3 -  Secondary air pump relay -J299-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code ALZ, from August 2004

Audi A4 Fitting Locations No.  803 / 14


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code ALT, from August 2004

Position of relays, relay carrier (4-pin), engine code ALT, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
2 -  Motronic current supply relay -J271-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code ALT, from August 2004

Audi A4 Fitting Locations No.  803 / 15


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code BDG, from August 2004

Position of relays, relay carrier (4-pin), engine code BDG, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.1 -  Fuel pump relay -J17-
1.2 -  Starter inhibitor relay -J207-
2 -  Terminal 30 voltage supply relay -J317-
3 -  Glow plug relay -J52-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code BDG, from August 2004

Audi A4 Fitting Locations No.  803 / 16


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004

Position of relays, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.1 -  Continued coolant circulation relay -J151-
1.2 -  Starter inhibitor relay -J207-
 -  Starter inhibitor relay, clutch pedal switch ¹) -J434-
2 -  Motronic current supply relay -J271-
3 -  Secondary air pump relay -J299-
¹) For engine codes BBK, BHF only
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004

Audi A4 Fitting Locations No.  803 / 17


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code AWA, from August 2004

Position of relays, relay carrier (4-pin), engine code AWA, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.2 -  Starter inhibitor relay -J207-
2 -  Motronic current supply relay -J271-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code AWA, from August 2004

Audi A4 Fitting Locations No.  803 / 18


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes AUK, BKH, from August 2004

Position of relays, relay carrier (4-pin), engine codes AUK, BKH, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.1 -  Additional coolant pump relay -J496-
2 -  Motronic current supply relay -J271-
3 -  Engine component current supply relay -J757-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine codes AUK, BKH, from August 2004

Audi A4 Fitting Locations No.  803 / 19


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code BNS, from August 2004

Position of relays, relay carrier (4-pin), engine code BNS, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.1 -  Continued coolant circulation relay -J151-
1.2 -  Brake servo relay -J569-
2 -  Motronic current supply relay -J271-
3 -  Engine component current supply relay -J757-
4 -  Secondary air pump relay -J299-
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code BNS, from August 2004

Audi A4 Fitting Locations No.  803 / 20


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004

Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.1 -  Continued coolant circulation relay ¹) -J151-
1.2 -  Starter inhibitor relay ¹) -J207-
2 -  Motronic current supply relay ¹) -J271-
3 -  Secondary air pump relay ¹) -J299-
¹) for models with manual gearbox or with automatic gearbox (multitronic) only
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004

Audi A4 Fitting Locations No.  803 / 21


AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004

Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004
   
Location:
In electronics box in plenum chamber
Position of relays:
1.1 -  Continued coolant circulation relay ¹) -J151-
1.2 -  Starter inhibitor relay ¹) -J207-
2 -  Motronic current supply relay ¹) -J271-
3 -  Secondary air pump relay ¹) -J299-
¹) for models with automatic gearbox (AG5) only
 
AUDI A4 2005 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004

Audi A4 Fitting Locations No.  803 / 22


AUDI A4 2005 Position of relays, relay carrier for special vehicles

Position of relays, relay carrier for special vehicles
   
Location:
Driver side dash panel
Position of relays, taxi
1 -  Alarm system relay 2, main beam -J461-
2 -  Taxi alarm system 2 control unit -J430-
3 -  Alarm system control unit -J85-
4 -  Alarm system control unit -J85-
5 -  Alarm system relay 4, right turn signal -J463-
6 -  Alarm system relay 3, left turn signal -J462-
Position of relays, police
1 -  Main beam relay -J330-
2 -  Special vehicle control unit -J608-
3 -  Siren system relay -J408-
4 -  Siren system relay -J408-
5 -  Flasher relay for headlight main beam alarm system -J182-
6 -  Vacant
 
AUDI A4 2005 Position of relays, relay carrier for special vehicles


AUDI A4 2005 Overview of fuses

Overview of fuses
   
AUDI A4 2005 Overview of fuses
1 -  Main fuse: Strip fuse -S88-
q   Location → page 802/5
2 -  Coupling station of A-pillar
q   Components: -S46-
q   Location → page 802/6
3 -  Relay carrier (3-pin)
q   Components: -S126-, -S328-
q   Location → page 802/7
4 -  Relay carrier (9-pin) with onboard supply control unit
q   Components: -S37-, -S45-, -S87-, -S100-, -S184-, -S280-
q   Location → page 802/8
5 -  Relay carrier (4-pin) with screw connection
q   Components: -S42-, -S51-, -S123-, -S214-
q   Location up to July 2004 → page 802/9
q   Location from August 2004 → page 802/10

   

Audi A4 Fitting Locations No.  802 / 2
   
AUDI A4 2005 Overview of fuses
6 -  Fuse holder
q   Components: -S1- up to -S22- and -S223- up to -S244-
q   Location up to July 2004 → page 802/25
q   Location from August 2004 → page 802/32
7 -  Fuse holder for special vehicles
q   Components: -S55-, -S57-, -S182-, -S183-, -S184-, -S291-, -S292-, -S293-, S294-, -S295-, -S296-, -S297-, -S298-
q   Location taxi → page 802/38
q   Location police → page 802/39

   

Audi A4 Fitting Locations No.  802 / 3
   
AUDI A4 2005 Overview of fuses
8 -  Relay carrier (4-pin)
q   Components: -S23-, -S39-, -S73-, -S102-, -S116-, -S130-, -S131-, -S189-, -S282-, -S283-, -S286-, -S344-, -S345-
q   Location for petrol engines, up to July 2004 → page 802/11
q   Location for diesel engines, up to July 2004 → page 802/12
q   Location for engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD → page 802/13
q   Location for engine codes BSG, BPP, BTP, BKN, ASB → page 802/14
q   Location for engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK → page 802/15
q   Location for engine code ALZ → page 802/16
q   Location for engine code ALT → page 802/17
q   Location for engine code BDG → page 802/18
q   Location for engine codes BFB, BBK, BHF → page 802/19
q   Location for engine code AWA → page 802/20

   

Audi A4 Fitting Locations No.  802 / 4
   
AUDI A4 2005 Overview of fuses
t  Location for engine codes AUK, BKH → page 802/21
t  Location for engine code BNS → page 802/22
t  Location for engine code BBJ, with manual gearbox or multitronic → page 802/23
t  Location for engine code BBJ with AG5 → page 802/24

   

Audi A4 Fitting Locations No.  802 / 5
Main fuse
   
Location:
On the battery
S88 -  Strip fuse
 
AUDI A4 2005 Overview of fuses

Audi A4 Fitting Locations No.  802 / 6


AUDI A4 2005 Position of fuses, coupling station of A-pillar

Position of fuses, coupling station of A-pillar
   
Location:
bottom right, behind the trim
Fuses:
E -  Seat adjustment fuse -S46-
E -  Seat adjustment fuse -S46- (with lumbar support adjustment)
 
AUDI A4 2005 Position of fuses, coupling station of A-pillar

Audi A4 Fitting Locations No.  802 / 7


AUDI A4 2005 Position of fuses, relay carrier (3-pin)

Position of fuses, relay carrier (3-pin)
   
Location:
Driver side dash panel
Fuses:
A ¹) -  Auxiliary heater fuse -S62-
B -  Auxiliary heater fuse -S126-
C -  Auxiliary heater fuse 2 -S328-
¹) applicable up to model year 2003
 
AUDI A4 2005 Position of fuses, relay carrier (3-pin)

Audi A4 Fitting Locations No.  802 / 8


AUDI A4 2005 Position of fuses, relay carrier (9-pin) with onboard supply control unit

Position of fuses, relay carrier (9-pin) with onboard supply control unit
   
Location:
Driver side dash panel, behind the relay carrier (3-pin)
Fuses:
A -  Rear roller blind thermal fuse -S100-
B -  Rear roller blind thermal fuse -S100-
B -  Socket 1 fuse (driving school vehicle) -S184-
D -  Window regulator single fuse 2 -S280-
E -  Driver seat adjustment thermal fuse 2 -S45-
F -  Window regulator single fuse -S37-
G -  Trailer towing attachment thermal fuse -S87-
 
AUDI A4 2005 Position of fuses, relay carrier (9-pin) with onboard supply control unit

Audi A4 Fitting Locations No.  802 / 9


AUDI A4 2005 Position of fuses, relay carrier (4-pin) with screw connection, up to July 2004

Position of fuses, relay carrier (4-pin) with screw connection, up to July 2004
   
Location:
Driver side dash panel
Fuses:
B -  Optional equipment: vermin repellent
E -  Radiator fan run-on fuse -S214-
F -  Special vehicle fuse
G -  Radiator fan single fuse -S42-
H -  ABS control unit fuse 1 -S123-
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin) with screw connection, up to July 2004

Audi A4 Fitting Locations No.  802 / 10


AUDI A4 2005 Position of fuses, relay carrier (4-pin) with screw connection, from August 2004

Position of fuses, relay carrier (4-pin) with screw connection, from August 2004
   
Location:
Driver side dash panel
Fuses:
B -  Optional equipment: vermin repellent
E -  S51 - Fuse (driving school vehicle) ¹) -S51-
F -  Fuse (driving school vehicle) ³) -S51-
 -  Radiator fan single fuse ¹)²) -S42-
G -  Radiator fan run-on fuse¹)²) -S214-
 -  Radiator fan single fuse ⁴) -S42-
H -  ABS control unit fuse 1 -S123-
¹) for engine codes BBK, BHF, BNS only
²) for engine codes BKN, ASB, BPP, BSG, BTP only
³) not for engine codes BBK, BHF
⁴) not for engine codes BKN, ASB, BPP, BSG, BTP, BBK, BHF
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin) with screw connection, from August 2004

Audi A4 Fitting Locations No.  802 / 11


AUDI A4 2005 Position of fuses, relay carrier (4-pin), petrol engines, up to July 2004

Position of fuses, relay carrier (4-pin), petrol engines, up to July 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Secondary air pump fuse -S130-
C -  Automatic gearbox fuse, run-on -S286-
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), petrol engines, up to July 2004

Audi A4 Fitting Locations No.  802 / 12


AUDI A4 2005 Position of fuses, relay carrier (4-pin), diesel engines, up to July 2004

Position of fuses, relay carrier (4-pin), diesel engines, up to July 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine control unit fuse -S102-
 -  Engine electronics fuse -S282-
B -  Engine glow plug strip fuse -S39-
C -  Automatic gearbox fuse, run-on -S286-
 -  Engine control unit fuse ²) -S102-
D -  Glow plug fuse 2 -S189-
F ¹) -  Glow plug fuse 2 -S189-
¹) applicable from model year 2002
²) for models with engine code BKE only
  Note:
The positions D and F are in the electronics box.
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), diesel engines, up to July 2004

Audi A4 Fitting Locations No.  802 / 13


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004

Position of fuses, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine glow plug strip fuse -S39-
C -  Engine control unit fuse -S102-
D -  Automatic gearbox fuse, run-on -S286-
E -  Engine electronics fuse 2 -S344-
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004

Audi A4 Fitting Locations No.  802 / 14


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004

Position of fuses, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine glow plug strip fuse -S39-
C -  Engine control unit fuse -S102-
D -  Automatic gearbox fuse, run-on -S286-
E -  Engine electronics fuse 2 -S344-
G -  Engine electronics fuse 3 -S345-
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004

Audi A4 Fitting Locations No.  802 / 15


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004

Position of fuses, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine electronics fuse 3 -S345-
C -  Engine control unit fuse -S102-
D -  Fuse 1 -S131-
E -  Engine electronics fuse 2 -S344-
G -  Automatic gearbox fuse, run-on -S286-
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004

Audi A4 Fitting Locations No.  802 / 16


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code ALZ, from August 2004

Position of fuses, relay carrier (4-pin), engine code ALZ, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Secondary air pump fuse -S130-
D -  Engine control unit fuse -S102-
E -  Injector fuse -S116-
G -  Engine electronics fuse -S282-
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code ALZ, from August 2004

Audi A4 Fitting Locations No.  802 / 17


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code ALT, from August 2004

Position of fuses, relay carrier (4-pin), engine code ALT, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Engine electronics fuse -S282-
C -  Automatic gearbox fuse, run-on -S286-
D -  Engine control unit fuse -S102-
E -  Injector fuse -S116-
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code ALT, from August 2004

Audi A4 Fitting Locations No.  802 / 18


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code BDG, from August 2004

Position of fuses, relay carrier (4-pin), engine code BDG, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine glow plug strip fuse -S39-
C -  Automatic gearbox fuse, run-on -S286-
H¹) -  Glow plug fuse 2 -S189-
¹) on the relay carrier underside
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code BDG, from August 2004

Audi A4 Fitting Locations No.  802 / 19


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004

Position of fuses, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Secondary air pump fuse -S130-
C -  Automatic gearbox fuse, run-on -S286-
D -  Engine control unit fuse -S102-
E -  Injector fuse -S116-
G -  Engine electronics fuse -S282-
H¹) -  Heater fuse ²) -S23-
¹) on the relay carrier underside
²) for China only
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004

Audi A4 Fitting Locations No.  802 / 20


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code AWA, from August 2004

Position of fuses, relay carrier (4-pin), engine code AWA, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine electronics fuse 2 -S344-
C -  Automatic gearbox fuse, run-on -S286-
D -  Fuse 1 -S131-
H ¹) -  Engine electronics fuse 3 -S345-
¹) on the relay carrier underside
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code AWA, from August 2004

Audi A4 Fitting Locations No.  802 / 21


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes AUK, BKH, from August 2004

Position of fuses, relay carrier (4-pin), engine codes AUK, BKH, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Engine electronics fuse -S282-
C -  Engine control unit fuse -S102-
D -  Fuse 1 -S131-
E -  Lambda probe heating thermal fuse -S73-
G -  Automatic gearbox fuse, run-on -S286-
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes AUK, BKH, from August 2004

Audi A4 Fitting Locations No.  802 / 22


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code BNS, from August 2004

Position of fuses, relay carrier (4-pin), engine code BNS, from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Engine electronics fuse -S282-
C -  Engine control unit fuse -S102-
D -  Fuse 1 -S131-
E -  Lambda probe heating thermal fuse -S73-
? -  Brake vacuum pump fuse -S283-
H ¹) -  Secondary air pump fuse -S130-
¹) on the relay carrier underside
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine code BNS, from August 2004

Audi A4 Fitting Locations No.  802 / 23


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BBJ (with manual gearbox or multitronicВ®), from August 2004

Position of fuses, relay carrier (4-pin), engine codes BBJ (with manual gearbox or multitronic®), from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 ¹) -S344-
B -  Secondary air pump fuse ¹) -S130-
C -  Automatic gearbox fuse, run-on ¹) -S286-
D -  Engine control unit fuse¹) -S102-
E -  Injector fuse ¹) -S116-
G -  Engine electronics fuse ¹) -S282-
¹) for models with manual gearbox or with automatic gearbox (multitronic®) only
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BBJ (with manual gearbox or multitronicВ®), from August 2004

Audi A4 Fitting Locations No.  802 / 24


AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BBJ (with AG5), from August 2004

Position of fuses, relay carrier (4-pin), engine codes BBJ (with AG5), from August 2004
   
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine control unit fuse ¹) -S102-
B -  Secondary air pump fuse ¹) -S130-
C -  Engine electronics fuse ¹) -S282-
D -  Engine electronics fuse 2 ¹) -S344-
E -  Injector fuse ¹) -S116-
¹) for models with automatic gearbox (AG5) only
 
AUDI A4 2005 Position of fuses, relay carrier (4-pin), engine codes BBJ (with AG5), from August 2004

Audi A4 Fitting Locations No.  802 / 25


AUDI A4 2005 Position of fuses, fuse holder, up to July 2004

Position of fuses, fuse holder, up to July 2004
   
Location:
Driver side dash panel
Fuse colours
35 A -  green-blue
30 A -  green
25 A -  white
20 A -  yellow
15 A -  blue
10 A -  red
7,5 A -  brown
5 A -  beige
  Note:
From fuse number 23 upwards the fuses in the fuse holder are designated as 223 in the Current Flow Diagram
 
AUDI A4 2005 Position of fuses, fuse holder, up to July 2004

Audi A4 Fitting Locations No.  802 / 26
   
Position of fuses, up to July 2004:
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - S1 - Fuse in relay plate fuse holder 10 A - J255 - Climatronic control unit 30
2 - S2 - Fuse in relay plate fuse holder 5 A - W9 - Left footwell light
W10 - Right footwell light
W45 - Rear left footwell light
W46 - Rear right footwell light		 30
3 - S3 - Fuse in relay plate fuse holder 5 A - Z20 - Left washer jet heater element
Z21 - Right washer jet heater element		 75x
4 - S4 - Fuse in relay plate fuse holder 5 A - J293 - Radiator fan control unit
J671 - Radiator fan control unit 2		 87
5 - S5 - Fuse in relay plate fuse holder 10 A - E128 - Heated rear left seat switch with regulator
E129 - Heated rear right seat switch with regulator
F189 - Tiptronic switch
G226 - Oil level and oil temperature sender		 15
6 - S6 - Fuse in relay plate fuse holder 5 A - G65 - High-pressure sender
G238 - Air quality sensor		 15
7 - S7 - Fuse in relay plate fuse holder 10 A - E132 - Traction control system switch
F36 - Clutch pedal switch
F47 - Brake pedal switch
J104 - ABS control unit		 15
8 - S8 - Fuse in relay plate fuse holder 5 A - R36 - Telephone transmitter and receiver unit
R86 - Aerial amplifier for mobile telephone		 30
9 - S9 - Fuse in relay plate fuse holder 15 A - J569 - Brake servo relay 30

   

Audi A4 Fitting Locations No.  802 / 27
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
10 - S10 - Fuse in relay plate fuse holder 5 A - E102 - Headlight range control regulator
J431 - Headlight range control, control unit
J668 - Power output module for right headlight
V48 - Left headlight range control motor
V49 - Right headlight range control motor		 15
11 - S11 - Fuse in relay plate fuse holder 10 A - J234 - Airbag control unit
J706 - Seat occupied recognition control unit
K145 - Front passenger side airbag deactivated warning lamp		 15
12 - S12 - Fuse in relay plate fuse holder 10 A - T16 - 16-pin connector, black, diagnostic connector 30
13 - S13 - Fuse in relay plate fuse holder 10 A - J527 - Steering column electronics control unit 30
14 - S14 - Fuse in relay plate fuse holder 10 A - F - Brake light switch 30
15 - S15 - Fuse in relay plate fuse holder 10 A - J285 - Control unit in dash panel insert 30
16 - S16 - Fuse in relay plate fuse holder 5 A - E284 - Garage door operating unit
J530 - Garage door operation control unit		 15
17 - S17 - Fuse in relay plate fuse holder   - Vacant  
18 - S18 - Fuse in relay plate fuse holder   - Vacant  

   

Audi A4 Fitting Locations No.  802 / 28
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
19 - S19 - Fuse in relay plate fuse holder 15 A - E1 - Lighting switch 75x
20 - S20 - Fuse in relay plate fuse holder 15 A - J85 - Alarm system control unit
J344 - Right gas discharge light control unit
M31 - Right headlight dipped beam bulb
V49 - Right headlight range control motor		 56
21 - S21 - Fuse in relay plate fuse holder 15 A - J85 - Alarm system control unit
J343 - Left gas discharge light control unit
J519 - Onboard power supply control unit
M29 - Left headlight dipped beam bulb
V48 - Left headlight range control motor		 56
22 - S22 - Fuse in relay plate fuse holder 15 A - J386 - Driver door control unit
J387 - Front passenger side door control unit		 30
23 - S223 - Fuse on fuse holder 15 A - J388 - Rear left door control unit
J389 - Rear right door control unit		 30
24 - S224 - Fuse on fuse holder 20 A - J393 - Convenience system central control unit 30
25 - S225 - Fuse on fuse holder 30 A - J126 - Fresh air blower control unit 30
26 - S226 - Fuse on fuse holder 30 A - E87 - Operating and display unit for air conditioning system/Climatronic 30
27 - S227 - Fuse on fuse holder 30 A - J345 - Trailer detector control unit 30
28 - S228 - Fuse on fuse holder 20 A - G6 - Fuel system pressurisation pump 87

   

Audi A4 Fitting Locations No.  802 / 29
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
29 - S229 - Fuse on fuse holder 20 A - N70 - Ignition coil 1 with output stage
N127 - Ignition coil 2 with output stage
N291 - Ignition coil 3 with output stage
N292 - Ignition coil 4 with output stage
N323 - Ignition coil 5 with output stage
N324 - Ignition coil 6 with output stage
N325 - Ignition coil 7 with output stage
N326 - Ignition coil 8 with output stage		 87
30 - S230 - Fuse on fuse holder 20 A - J245 - Sliding sunroof adjustment control unit 30
31 - S231 - Fuse on fuse holder 15 A - F125 - Multifunction switch
F4 - Reversing light switch
G70 - Air mass meter
G399 - Light detector sensor
J217 - Automatic gearbox control unit
J226-Starter inhibitor and reversing light relay
N110 - Selector lever lock solenoid
T16 - 16-pin connector, black, diagnostic connector
Y7 - Automatic anti-dazzle interior mirror		 15
32 - S232 - Fuse on fuse holder 20 A - J583 - NOx sensor control unit
N30 - Injector, cylinder 1
N31 - Injector, cylinder 2
N32 - Injector, cylinder 3
N33 - Injector, cylinder 4
N83 - Injector, cylinder 5
N84 - Injector, cylinder 6		 87
33 - S233 - Fuse on fuse holder 15 A - U1 - Cigarette lighter 30

   

Audi A4 Fitting Locations No.  802 / 30
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
34 - S234 - Fuse on fuse holder 20 A - G70 - Air mass meter
J299 - Secondary air pump relay
N80 - Activated charcoal filter system solenoid valve 1
N112 - Secondary air inlet valve
N144 - Left electrohydraulic engine mounting solenoid valve
N145 - Right electrohydraulic engine mounting solenoid valve
N156 - Variable intake manifold change-over valve
N220 - Exhaust flap valve
N276 - Fuel pressure regulating valve
Z19 - Lambda probe heater
Z28 - Lambda probe 2 heater
Z29 - Lambda probe 1 heater after catalytic converter
Z30 - Lambda probe 2 heater after catalytic converter
V144 - Fuel system diagnostic pump		 87
35 - S235 - Fuse on fuse holder 30 A - U - socket 30
36 - S236 - Fuse on fuse holder 30 A - J519 - Onboard power supply control unit
V12 -Rear window wiper motor		 75x
37 - S237 - Fuse on fuse holder 30 A - J519 - Onboard power supply control unit
V11 - Headlight washer system pump		 75x
38 - S238 - Fuse on fuse holder 15 A - G303 - Interior monitor send and receive module 1
H12 - Alarm horn
J393 - Convenience system central control unit		 30
39 - S239 - Fuse on fuse holder 20 A - J402 - Navigation operating electronics control unit
R - Radio
R12 - Amplifier
T8 - 8-connector, black, radio connector III		 30

   

Audi A4 Fitting Locations No.  802 / 31
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
40 - S240 - Fuse on fuse holder 25 A - H2 - Treble tone horn
H7 - Bass tone horn
J4 - Dual tone horn relay		 30
41 - S241 - Fuse on fuse holder 30 A - J364 - Auxiliary heater control unit
R64 - Remote control receiver for auxiliary heating		 30
42 - S242 - Fuse on fuse holder 25 A - J104 - ABS control unit 30
43 - S243 - Fuse on fuse holder 15 A - J220 - Motronic control unit
J363 - Current supply relay for Simos control unit
J623 - Engine control unit
N18 - Exhaust gas recirculation valve		 15
44 - S244 - Fuse on fuse holder 30 A - E87 - Operating and display unit for air conditioning system/Climatronic
J215 - Heated rear left seat control unit
J255 - Climatronic control unit		 30

   

Audi A4 Fitting Locations No.  802 / 32


AUDI A4 2005 Position of fuses, fuse holder, from August 2004

Position of fuses, fuse holder, from August 2004
   
Location:
Driver side dash panel
Fuse colours
35 A -  green-blue
30 A -  green
25 A -  white
20 A -  yellow
15 A -  blue
10 A -  red
7,5 A -  brown
5 A -  beige
  Note:
From fuse number 23 upwards the fuses in the fuse holder are designated as 223 in the Current Flow Diagram
 
AUDI A4 2005 Position of fuses, fuse holder, from August 2004

Audi A4 Fitting Locations No.  802 / 33
   
Fuse location from August 2004:
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
1 - S1 - Fuse in relay plate fuse holder 10 A - J255 - Climatronic control unit 30
2 - S2 - Fuse in relay plate fuse holder 5 A - W9 - Left footwell light
W10 - Right footwell light
W45 - Rear left footwell light
W46 - Rear right footwell light		 30
3 - S3 - Fuse in relay plate fuse holder 5 A - Z20 - Left washer jet heater element
Z21 - Right washer jet heater element		 75x
4 - S4 - Fuse in relay plate fuse holder 5 A - J293 - Radiator fan control unit
J671 - Radiator fan control unit 2		 87
5 - S5 - Fuse in relay plate fuse holder 10 A - E149 - Rear roller blind switch
E272 - Function selection switch 2
F189 - Tiptronic switch
G226 - Oil level and oil temperature sender
J262 - Rear roller blind control unit
J401 - Navigation system with CD drive control unit
J446 - Parking aid control unit		 15
6 - S6 - Fuse in relay plate fuse holder 5 A - G65 - High-pressure sender
G238 - Air quality sensor		 15
7 - S7 - Fuse in relay plate fuse holder 10 A - E132 - Traction control system switch
F36 - Clutch pedal switch
F47 - Brake pedal switch
J104 - ABS control unit		 15
8 - S8 - Fuse in relay plate fuse holder 5 A - R36 - Telephone transmitter and receiver unit
R86 - Aerial amplifier for mobile telephone		 30
9 - S9 - Fuse in relay plate fuse holder 15 A - J569 - Brake servo relay 30

   

Audi A4 Fitting Locations No.  802 / 34
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
10 - S10 - Fuse in relay plate fuse holder 5 A - E102 - Headlight range control regulator
J431 - Headlight range control, control unit
J668 - Power output module for right headlight
V48 - Left headlight range control motor
V49 - Right headlight range control motor		 15
11 - S11 - Fuse in relay plate fuse holder 10 A - J234 - Airbag control unit
J706 - Seat occupied recognition control unit
K145 - Front passenger side airbag deactivated warning lamp		 15
12 - S12 - Fuse in relay plate fuse holder 10 A - T16 - 16-pin connector, black, diagnostic connector 30
13 - S13 - Fuse in relay plate fuse holder 10 A - J527 - Steering column electronics control unit 30
14 - S14 - Fuse in relay plate fuse holder 10 A - F - Brake light switch 30
15 - S15 - Fuse in relay plate fuse holder 10 A - J285 - Control unit in dash panel insert
J401 - Navigation system with CD drive control unit		 30
16 - S16 - Fuse in relay plate fuse holder 5 A - E284 - Garage door operating unit
J530 - Garage door operation control unit		 15
17 - S17 - Fuse in relay plate fuse holder 10 A - G397 - Rain and light detector sensor
J446 - Parking aid control unit
J502 - Tyre pressure monitor control unit		 30
18 - S18 - Fuse in relay plate fuse holder 5 A - V318 - Left dynamic cornering light control motor 15

   

Audi A4 Fitting Locations No.  802 / 35
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
19 - S19 - Fuse in relay plate fuse holder 15 A - L22 - Left fog light bulb
L23 - Right fog light bulb		 55
20 - S20 - Fuse in relay plate fuse holder   - Vacant  
21 - S21 - Fuse in relay plate fuse holder   - Vacant  
22 - S22 - Fuse in relay plate fuse holder 15 A - J386 - Driver door control unit
J387 - Front passenger side door control unit		 30
23 - S223 - Fuse on fuse holder 15 A - J388 - Rear left door control unit
J389 - Rear right door control unit		 30
24 - S224 - Fuse on fuse holder 20 A - J393 - Convenience system central control unit 30
25 - S225 - Fuse on fuse holder 30 A - J126 - Fresh air blower control unit 30
26 - S226 - Fuse on fuse holder 30 A - J9 - Heated rear window relay 30
27 - S227 - Fuse on fuse holder 30 A - J345 - Trailer detector control unit 30
28 - S228 - Fuse on fuse holder 20 A

30 A		 - G6 - Fuel system pressurisation pump
J538 - Fuel pump control unit
G6 - Fuel system pressurisation pump ¹)
J538 - Fuel pump control unit ¹)		 87

  Note:
¹) for models with engine code BNS only
   

Audi A4 Fitting Locations No.  802 / 36
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
29 - S229 - Fuse on fuse holder   - Vacant  
30 - S230 - Fuse on fuse holder 20 A - J245 - Sliding sunroof adjustment control unit 30
31 - S231 - Fuse on fuse holder 15 A - F4 - Reversing light switch
G70 - Air mass meter
G399 - Light detector sensor
J217 - Automatic gearbox control unit
N110 - Selector lever lock solenoid
T16 - 16-pin connector, black, diagnostic connector
Y7 - Automatic anti-dazzle interior mirror		 15
32 - S232 - Fuse on fuse holder 15 A - U10-Trailer socket ²) 75x
33 - S233 - Fuse on fuse holder 15 A
20 A		 - U1 - Cigarette lighter
U1 - Cigarette lighter ¹)		 30
34 - S234 - Fuse on fuse holder 30 A
20 A		 - U5 - 12 V socket
U5 - 12 V socket ¹)		 30
35 - S235 - Fuse on fuse holder 30 A
20 A		 - U - socket
U-Socket ¹)		 30
36 - S236 - Fuse on fuse holder 30 A - J519 - Onboard power supply control unit
V12 -Rear window wiper motor		 75x
37 - S237 - Fuse on fuse holder 30 A - J519 - Onboard power supply control unit
V11 - Headlight washer system pump		 75x

  Notes:
t  ¹) applicable from February 2005
t  ²) applicable from model year 2006
   

Audi A4 Fitting Locations No.  802 / 37
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
38 - S238 - Fuse on fuse holder 15 A - G303 - Interior monitor send and receive module 1
H12 - Alarm horn
J393 - Convenience system central control unit		 30
39 - S239 - Fuse on fuse holder 20 A - J401 - Navigation system with CD drive control unit
J503 - Control unit with display for radio and navigation system
T8 - 8-connector, black, radio connector III
R - Radio
R12 - Amplifier
R146 - Satellite radio		 30
40 - S240 - Fuse on fuse holder 25 A - H2 - Treble tone horn
H7 - Bass tone horn
J4 - Dual tone horn relay		 30
41 - S241 - Fuse on fuse holder 30 A - J364 - Auxiliary heater control unit
R64 - Remote control receiver for auxiliary heating		 30
42 - S242 - Fuse on fuse holder 25 A - J104 - ABS control unit 30
43 - S243 - Fuse on fuse holder 15 A - G70 - Air mass meter
G212 - Exhaust gas recirculation potentiometer
J363 - Current supply relay for Simos control unit
J623 - Engine control unit
J757 - Engine component current supply relay
N18 - Exhaust gas recirculation valve		 15
44 - S244 - Fuse on fuse holder 30 A
35 A		 - J255 - Climatronic control unit ¹)
J255 - Climatronic control unit ²)		 30

  Notes:
t  ¹) applicable up to model year 2005
t  ²) applicable from model year 2006
   

Audi A4 Fitting Locations No.  802 / 38


AUDI A4 2005 Position of fuses, fuse holder for special vehicle - taxi

Position of fuses, fuse holder for special vehicle - taxi
   
Location:
Driver side dash panel
Fuse location taxi
1 -  Taxi meter and alarm system fuse -S183-
2 -  Alarm system fuse -S57-
3 -  Taxi meter fuse -S182-
9 -  Two-way radio fuse -S55-
10 -  Socket 1 fuse -S184-
¹) applicable from model year 2006
 
AUDI A4 2005 Position of fuses, fuse holder for special vehicle - taxi

Audi A4 Fitting Locations No.  802 / 39


AUDI A4 2005 Position of fuses, fuse holder for special vehicle - police

Position of fuses, fuse holder for special vehicle - police
   
Location:
Driver side dash panel
Fuse location police
1 -  Special vehicle fuse 1 -S291-
2 -  Special vehicle fuse 2 -S292-
3 -  Special vehicle fuse 3 -S293-
4 -  Special vehicle fuse 4 -S294-
5 -  Special vehicle fuse 5 -S295-
6 -  Special vehicle fuse 6 -S296-
7 -  Special vehicle fuse 7 -S297-
8 -  Special vehicle fuse 8 -S298-
¹) applicable from February 2005
²) applicable from model year 2006
 
AUDI A4 2005 Position of fuses, fuse holder for special vehicle - police


AUDI A4 2005 Control units overview

Control units overview
   
AUDI A4 2005 Control units overview
1 -  Heated windscreen control unit -J505-
q   Location → page 804/4
2 -  CD changer -R41-
q   Location → page 804/13
3 -  Fresh air blower control unit -J126-
q   Location ⇒ page → 804/7
4 -  Headlight range control, control unit -J431-
q   Location → page 804/7
5 -  Radio -R-
q   not for navigation system
q   Location → page 804/11
5 -  Navigation operating electronics control unit -J402-
q   for navigation system RNS-D only
q   Location → page 804/11
5 -  Control unit with display for radio and navigation system -J503-
q   for navigation system RNS-Low only
q   Location → page 804/13

   

Audi A4 Fitting Locations No.  804 / 2
   
AUDI A4 2005 Control units overview
5 -  Navigation system with CD drive control unit -J401-
q   Location for navigation system NS-Low → page 804/12
q   Location for navigation system RNS-E → page 804/12
6 -  Telephone and telematics control unit, telematics -J526-
q   Location → page 804/14
6 -  Language input control unit -J507-
q   Location → page 804/14
7 -  Steering column electronics control unit -J527-
q   Location → page 804/8
8 -  Front passenger side door control unit -J387-
q   Location → page 804/16
9 -  Display control unit in dash panel insert -J285-
q   Location → page 804/8
10 -  Airbag control unit -J234-
q   Location → page 804/9
11 -  Driver door control unit -J386-
q   Location → page 804/16

   

Audi A4 Fitting Locations No.  804 / 3
   
AUDI A4 2005 Control units overview
12 -  Convenience system central control unit -J393-
q   Location → page 804/15
13 -  Onboard power supply control unit -J519-
q   Location → page 804/9
14 -  Motronic control unit -J220-
14 -  Diesel direct injection system control unit -J248-
14 -  Simos control unit -J361-
q   Location → page 804/4
15 -  Automatic gearbox control unit -J217-
q   not for models with multitronic®
q   Location → page 804/5
16 -  ABS control unit -J104-
q   Location → page 804/6
17 -  Automatic gearbox control unit -J217-
q   for models with multitronic® only
q   Location → page 804/5
18 -  Radiator fan control unit -J293-
q   Location → page 804/6

   

Audi A4 Fitting Locations No.  804 / 4
Heated windscreen control unit -J505-
   
Location:
On right in plenum chamber, next to battery


AUDI A4 2005 Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-

Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-
 
AUDI A4 2005 Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-
Location:
On electronics box in plenum chamber
 
AUDI A4 2005 Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-

Audi A4 Fitting Locations No.  804 / 5
   


AUDI A4 2005 Automatic gearbox control unit -J217-

Automatic gearbox control unit -J217-
not for models with multitronic®
Location:
 
AUDI A4 2005 Automatic gearbox control unit -J217-
In electronics box in plenum chamber
for models with multitronic® only
Location:
In gearbox
 
AUDI A4 2005 Automatic gearbox control unit -J217-

Audi A4 Fitting Locations No.  804 / 6


AUDI A4 2005 ABS control unit -J104-

ABS control unit -J104-
   
Location:
In engine compartment, on front left hydraulic unit


AUDI A4 2005 Radiator fan control unit -J293-

Radiator fan control unit -J293-
 
AUDI A4 2005 Radiator fan control unit -J293-
Location:
on radiator fan
 
AUDI A4 2005 Radiator fan control unit -J293-

Audi A4 Fitting Locations No.  804 / 7


AUDI A4 2005 Fresh air blower control unit -J126-

Fresh air blower control unit -J126-
   
Location:
Behind the glove box, in fresh air blower


AUDI A4 2005 Headlight range control, control unit -J431-

Headlight range control, control unit -J431-
 
AUDI A4 2005 Headlight range control, control unit -J431-
Location:
Behind the glove box
 
AUDI A4 2005 Headlight range control, control unit -J431-

Audi A4 Fitting Locations No.  804 / 8


AUDI A4 2005 Steering column electronics control unit -J527-

Steering column electronics control unit -J527-
   
Location:
On steering column


AUDI A4 2005 Display control unit in dash panel insert -J285-

Display control unit in dash panel insert -J285-
 
AUDI A4 2005 Display control unit in dash panel insert -J285-
Location:
In the dash panel behind the display unit
 
AUDI A4 2005 Display control unit in dash panel insert -J285-

Audi A4 Fitting Locations No.  804 / 9


AUDI A4 2005 Airbag control unit -J234-

Airbag control unit -J234-
   
Location:
On centre tunnel, under handbrake lever


AUDI A4 2005 Onboard power supply control unit -J519-

Onboard power supply control unit -J519-
 
AUDI A4 2005 Onboard power supply control unit -J519-
Location:
Behind driver's storage compartment
 
AUDI A4 2005 Onboard power supply control unit -J519-

Audi A4 Fitting Locations No.  804 / 10


AUDI A4 2005 Trailer detector control unit -J345-

Trailer detector control unit -J345-
   
Location:
In left luggage compartment, behind side trim


AUDI A4 2005 Parking aid control unit -J446-

Parking aid control unit -J446-
 
AUDI A4 2005 Parking aid control unit -J446-
Location:
In left luggage compartment, behind side trim, on apron
 
AUDI A4 2005 Parking aid control unit -J446-

Audi A4 Fitting Locations No.  804 / 11
   


AUDI A4 2005 Navigation operating electronics control unit -J402-

Navigation operating electronics control unit -J402-
for navigation system RNS-D only
Location:
in centre console
 
AUDI A4 2005 Navigation operating electronics control unit -J402-


AUDI A4 2005 Radio -R-

Radio -R-
not for navigation system
Location:
in centre console
 
AUDI A4 2005 Radio -R-

Audi A4 Fitting Locations No.  804 / 12
   


AUDI A4 2005 Navigation system with CD drive control unit -J401-

Navigation system with CD drive control unit -J401-
For navigation system NS-Low only
Location:
 
AUDI A4 2005 Navigation system with CD drive control unit -J401-
in centre console
For navigation system RNS-E only
Location:
in centre console
 
AUDI A4 2005 Navigation system with CD drive control unit -J401-

Audi A4 Fitting Locations No.  804 / 13
   


AUDI A4 2005 Control unit with display for radio and navigation system -J503-

Control unit with display for radio and navigation system -J503-
for navigation system RNS-Low only
Location:
in centre console


AUDI A4 2005 CD changer -R41-

CD changer -R41-
 
AUDI A4 2005 CD changer -R41-
Location:
In glove compartment
 
AUDI A4 2005 CD changer -R41-

Audi A4 Fitting Locations No.  804 / 14
   


AUDI A4 2005 Telephone and telematics control unit, telematics -J526-

Telephone and telematics control unit, telematics -J526-
For models with telematics only
Location:
in electronics box under front passenger seat
 
AUDI A4 2005 Telephone and telematics control unit, telematics -J526-


AUDI A4 2005 Language input control unit -J507-

Language input control unit -J507-
For models with telematics only
Location:
in electronics box under front passenger seat
 
AUDI A4 2005 Language input control unit -J507-

Audi A4 Fitting Locations No.  804 / 15


AUDI A4 2005 Convenience system central control unit -J393-

Convenience system central control unit -J393-
   
Location:
on sill, front left
 
AUDI A4 2005 Convenience system central control unit -J393-

Audi A4 Fitting Locations No.  804 / 16


AUDI A4 2005 Driver door control unit -J386-

Driver door control unit -J386-
   
Location:
In window regulator motor integrated


AUDI A4 2005 Front passenger side door control unit -J387-

Front passenger side door control unit -J387-
 
AUDI A4 2005 Front passenger side door control unit -J387-
Location:
In window regulator motor integrated
 
AUDI A4 2005 Front passenger side door control unit -J387-
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