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Audi A4 B7 (2004-2009) - fuse box

Audi A4 B7 (2004-2009) – fuse box

Posted on July 31, 2022

Audi A4 B7 (8E, 8H) (2004-2008) – fuse box diagram

Year of production: 2004, 2005, 2006, 2007, 2008, 2009.

Cigarette lighter fuse (power socket) in Audi A4 B7 (2004-2009). is fuse 33 in the fuse box in the passenger compartment.

The fuse box in the passenger compartment

Location of the fuse box
Audi A4 B7 fuse box is located on the left side of the dashboard:

To access it, open the left side door and remove the dashboard side cover by pressing it.

Fuse box diagram

No. Amps [A] Description
1 10 A Air conditioning controller;

Climatronic.

2 5A Footlights
3 5A Heated windshield washer nozzles
4 5A Cooling fan control unit
5 10 A Rear roller shutter;

Multifunction switch;

Oil level sensor;

Oil temperature sensor;

Navigation system;

Park assist controller.

6 5A Air quality sensor;

Climatronic;

Heated front seats;

Air conditioning high pressure sensor;

TCS/ESP button,

7 10 A Traction control switch;

Clutch switch;

ABS controller;

Brake pedal switch.

8 5A Phone;

Telephone amplifier.

9 15A Brake servo relay
10 5A Headlight range control
11 5A Airbag control unit;

Airbag warning light.

12 10 A Diagnostic connector
13 10 A Control unit, steering column electronics
14 10 A Brake light switch
15 10 A Control unit with display in dashboard insert;

Navigation system;

CD player.

16 5A Garage door opener
17 10 A Rain sensor;

Daytime running system;

Park assist controller.

18 5A
19 15A Fog lights
20 Unused
21 Unused
22 15A Left front door controller;

Front right door controller.

23 15A Left rear door controller;

Right rear door controller.

24 20A Comfort system electrics
25 30A Blower;

Air conditioning.

26 30A Heated rear window
27 30A Trailer detection control unit
28 20A Fuel pump
29 Unused
30 20A Sliding roof controller
31 15A Reversing light switch;

Mass flow meter;

Automatic transmission controller;

Light sensor;

Starter relay;

Selector handle lock solenoid;

Diagnostic connector;

Automatic anti-glare rear view mirror.

32 Unused
33 15A Lighter
34 30A 12V socket
35 30A Accessory socket
36 30A Power control unit;

Rear wiper motor.

37 30A Power Controller;

Headlight washer pump.

38 15A Alarm horn;

Comfort system electrics;

Interior monitoring

39 20A Radio sound amplifier
40 25A Horn
41 Additional heater control unit;

Remote control receiver.

42 30A ABS control unit
43 15A Air mass flow meter;

Engine management;

EGR;

Main Relay;

Engine control unit;

Engine control unit relay.

44 30A Climate control unit

Fuse and relay box №1.

Fuse box diagram.

legend.

No. Amps [A] Description
A Unused
b 40A Additional heater
C 60A Additional heater
R1 Special Vehicles
R2 Low power heating relay
R3 High-performance heating relay

Fuse and relay box 2 in the passenger compartment

Fuse box diagram

No. Amps [A] Description
A 10 A Rear roller shutter
B1 10 A 12V socket
B2 10 A Rear roller shutter
C unused
D 30A Window regulator
E1 30A Driver’s seat adjustment
E2 10 A Driver’s seat adjustment
F 30A Window regulator
g 30A Trailer towing module
R1 Fuel pump relay;

Additional fuel pump relay.

R2 Servotronic control unit
R3 Starter motor relay
R4 Starter motor relay;

Brake servo relay.

R5 Heated rear window relay
R6 X relay relieving contact
R7 Unused
R8 Horn relay
R9 Unused

Fuse and relay box 3 in the passenger compartment

Diagram of the fuse box

No. Amps [A] Description
A Unused
B 10 A Pest repellent system
C Unused
D Unused
E 40A Special Vehicles
F1 10 A Special Vehicles
F2 40A Cooling fan (also 60A)
G 30A Cooling fan (also used 40A and 60A)
H 40A ABS control unit
R1 Unused
R2 Unused
R3 Special Vehicles
R4A Special Vehicles
R4B Cab package

Relay box in the passenger compartment

Relay box diagram

No. Amps [A] DESCRIPTION
A Unused
B Unused
B1 Unused
B2 Unused
R1 Alarm system;

Traffic lights;

High beam relay.

R2 Special Vehicles;

Cab Package.

R3 Alarm system control unit
or
siren relay
R4 Alarm system control unit
or
siren relay
R5 Alarm relay;

Right turn signal
or
blinker relay

R6 Alarm relay
Left turn signal
or
Unused

Fuse box 2 in the passenger compartment

Diagram of the fuse box

No. Amps [A] Description
1 10 A Special Vehicles
or
Cab package
2 25A Special Vehicles
or
alarm system
3 10 A Special Vehicles
or
Cab package
4 Special Vehicles
5 Special Vehicles
6 Special vehicles
7 Special Vehicles
8 Special Vehicles
9 5A Special Vehicles
or
radio
10 10 A Special Vehicles
or
12V socket

Audi A4 (B7) engine compartment fuse box

Fuse box diagram

No. Amps [A] Description
A 15A Engine electronics
B1 Unused
B2 40A Secondary air injection pump
C Unused
D 20A Engine control unit
E 15A Injectors
F Unused
G 15A Engine electronics
R1a Unused
R1b Unused
R2 Main relay
R3 Secondary air pump relay
R4 Unused

This is applicable for engine models:

2004, 2005, 2006, 2007 and 2008 Audi A4 B7 Gasoline (1.6, 1.8T, 2.0, 3.2) and Diesel (1.9 TDI, 2.5 TDI, 2.7 TDI and 3.0 TDI), S4, RS4.

Related posts:

  1. Audi A4 and S4 B9/8W (2022) fuse box
  2. Audi A4 and S4 B9/8W (2020-2021) fuse box
  3. Audi A4 and S4 (B5) (1994-2001) – fuse box
  4. Audi A4/S4 (B8/8K) (2008-2016) – fuse box
  5. Audi A4 Allroad B8 (2009 and above) – batteries
See also  Audi A3 and S3 8Y (2022) - fuse box

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