Fuse box diagram Audi A4 (B7)

The cars considered are Audi A4 B7 (8E, 8H) 2004, 2005, 2006, 2007, 2008, 2009. Gasoline, Diesel (1.6, 1.8, 2.0, 2.5, 2.7, 3.0, 3.2). Restyling, pre-restyling. You will also know where the fuses are located, specifically the fuel pump fuse, cigarette lighter fuses, heater fuses, etc.

Cigarette lighter fuse – (fuse box in passenger compartment, fuse №33/15A).

 

Fuse box laout Audi A4 B7.

Passenger compartment.

 

 

 

 

 

 

 

 

 

 

 

 

legend.

Fuse	Amps	Circuits protected
1	10A	Air-conditioning control unit. Climatronic.
2	5A	Footwell light(s).
3	5A	Heated washer jets.
4	5A	Cooling fan control unit.
5	10A	Rear roller blind. Multifunction switch. Oil level sensor. Oil temperature sensor. Navigation system. Parking assistance control unit.
6	5A	Air quality sensor. Climatronic. Heated front seat(s). Air-conditioning high-pressure sensor. TCS/ESP button.
7	10A	Traction control switch. Clutch switch. ABS control unit. Brake pedal switch.
8	5A	Telephone. Telephone amplifier.
9	15A	Brake servo relay.
10	5A	Headlight range control.
11	5A	Airbag control unit. Airbag warning light.
12	10A	Diagnostic connector.
13	10A	Control unit, steering column electronics.
14	10A	Brake light switch.
15	10A	Control unit with display in the dash panel insert. Navigation system. CD player.
16	5A	Garage door opener.
17	10A	Rain sensor. Daylight running system. Parking assistance control unit.
18	5A
19	15A	Fog light(s).
20	Not used
21	Not used
22	15A	Door control unit, front left. Door control unit, front right.
23	15A	Door control unit, rear left. Door control unit, rear right.
24	20A	Comfort system electrics.
25	30A	Blower. Air conditioning.
26	30A	Heated rear windscreen.
27	30A	Trailer detection control unit.
28	20A	Fuel pump.
29	Not used
30	20A	Sliding roof control unit.
31	15A	Reversing light switch. Mass airflow meter. Automatic transmission control unit. Light sensor. Starter relay. Selector handle lock solenoid. Diagnostic connector. Automatic anti-dazzle rear-view mirror.
32	Not used
33	15A	Cigarette lighter.
34	30A	12V socket.
35	30A	Accessory socket.
36	30A	Power supply control unit. Rear wiper motor.
37	30A	Power supply control unit. Headlight washer pump.
38	15A	Alarm horn. Comfort system electrics. Interior monitoring.
39	20A	Radio. Audio amplifier.
40	25A	Horn.
41		Additional heater control unit. Remote control receiver.
42	30A	ABS control unit.
43	15A	Mass airflow meter. Engine management. EGR. Main relay. Engine control unit. Engine control unit relay.
44	30A	Climate control unit.

 

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Fuse and relay box №1.

legend.

Fuse	Amps	Circuits protected
A	Not used
B	40A	Additional heater.
C	60A	Additional heater.
R1		Special vehicles.
R2		Low-output heating relay.
R3		High-output heating relay.

 

 

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Fuse and relay box №2 in passenger compartment.

fuse box diagram.

legend.

Fuse	Amps	Circuits protected
A	10A	Rear roller blind.
B1	10A	12V socket.
B2	10A	Rear roller blind.
C	not used
D	30A	Window regulator.
E1	30A	Driver’s seat adjustment.
E2	10A	Driver’s seat adjustment.
F	30A	Window regulator.
G	30A	Trailer towing module.
R1		Fuel pump relay. Additional relay, fuel pump.
R2		Servotronic control unit.
R3		Starter motor relay.
R4		Starter motor relay. Brake servo relay.
R5		Heated rear windscreen relay.
R6		X contact relief relay.
R7		Not used.
R8		Horn relay.
R9		Not used.

 

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Fuse and relay box №3 in passenger compartment.

fuse box diagram.

legend.

Fuse	Amps	Circuits protected
A	Not used
B	10A	Vermin repellent system.
C	Not used
D	Not used
E	40A	Special vehicles.
F1	10A	Special vehicles.
F2	40A	Cooling fan (60A also used).
G	30A	Cooling fan (40A and 60A also used).
H	40A	ABS control unit.
R1		Not used.
R2		Not used.
R3		Special vehicles.
R4A		Special vehicles..
R4B		Taxi package.

 

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Relay box in passenger compartment.

relay box diagram.

legend.

Fuse	Amps	Circuits protected
A	Not used
B	Not used
B1	Not used
B2	Not used
R1		Alarm system. Main beam. Or Main beam relay.
R2		Special vehicles. Or Taxi package.
R3		Alarm system control unit. Or Siren relay.
R4		Alarm system control unit. Or Siren relay.
R5		Alarm relay. Right direction indicator. Or Flasher relay.
R6		Alarm relay. Left direction indicator. Or Not used.

 

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Fuse box №2 in passenger compartment.

fuse box diagram.

legend.

Fuse	Amps	Circuits protected
1	10A	Special vehicles. Or Taxi package.
2	25A	Special vehicles. Or Alarm system.
3	10A	Special vehicles. Or Taxi package.
4		Special vehicles.
5		Special vehicles.
6		Special vehicles.
7		Special vehicles.
8		Special vehicles.
9	5A	Special vehicles. Or Radio.
10	10A	Special vehicles. Or 12V socket.

 

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Engine compartment Audi A4 (B7).

fuse box location.

fuse box diagram.

legend.

Fuse	Amps	Circuits protected
A	15A	Engine electronics.
B1	Not used
B2	40A	Secondary air injection pump.
C	Not used
D	20A	Engine control unit.
E	15A	Injectors.
F	Not used
G	15A	Engine electronics.
R1a		Not used.
R1b		Not used.
R2		Main relay.
R3		Secondary air pump relay.
R4		Not used.