1997-2005 Audi A6 / S6 / RS6 / Allroad (C5)

27.09.2016 (US:09.27.16), Category: Audi / A6

Fuse box driver side dash panel

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Fuse Panel Diagram


Fuses Specifications
No. A Description
1 5 Heater element, left washer jet
Heater element, right washer jet
2 10 Hazard warning light switch
3 5 Glove box light
4 5 Number plate light
5 10 Oil level/oil temperature sender
Compressor regulating valve, air conditioning system
High pressure sender
Tiptronic switch
Tyre pressure monitor control unit
Bulb monitoring device
Mobile phone operating electronics control unit
Control and display unit for air conditioner/Climatronic
Air quality sensor
Navigation system with CD drive control unit
Self-levelling suspension control unit
Operating unit to control suspension height
Telephone/telematics control unit
Control unit for voice control
Parking aid control unit
Rear roller blind switch
6 5 Central locking control unit
7 10 ABS control unit
Steering angle sender
TCS/ESP button
Cruise control system brake pedal switch (diesel direct injection system)
Clutch pedal switch
8 5 Telephone/telematics control unit
Control unit for voice control
9 10 Heated exterior mirror, driver's side Heated exterior mirror, front passenger's side
10 5 Headlight range control, control unit
11 5 Automatic anti-dazzle interior mirror
12 10 Diagnosis connection
13 10 Brake light switch Brake light bulbs
14 10 Central locking control unit
Memory operating unit, driver's seat
Memory operating unit, front passenger's seat
Luggage compartment release switch
Interior monitor switch
15 10 Control unit with display in dash panel insert
Solar cell isolation relay
Navigation system with CD drive control unit
Mirror memory control unit
Auxiliary heating radio controlled receiver
16 5 Steering angle sender
17 10 Tyre pressure monitor control unit
Self-levelling suspension control unit
Two-way radio switch
Parking aid control unit
18 10 Main beam bulb, right
Main beam warning lamp
19 10 Main beam bulb, left
20 15 Dipped beam bulb, right
Headlight range control motor, right
21 15 Dipped beam bulb, left
Headlight range control motor, left
22 5 Side light bulb, right
Tail light bulb, right
23 5 Side light bulb, left
Tail light bulb, left
24 25 Automatic intermittent wash/wipe relay
Intermittent wiper control
25 30 Control and display unit for air conditioner/Climatronic
Solar cell isolation relay
Fresh air blower
Magnetic coupling relay
Auxiliary heater relay
26 30 Control and display unit for air conditioner/Climatronic
Heated rear window switch
27 15 Heated steering wheel
Rear window wiper motor
28 20 Fuel pump (pre-supply pump)
Fuel pump control unit
Fuel pump relay
29 30 20 Ignition coil with output stage (4.2L BAS)
Motronic control unit (4.2L BAS)
Output stage Ignition coil with output stage
Motronic control unit
Camshaft timing adjustment valves
30 20 Sliding sunroof adjustment control unit
31 15 Starter inhibitor and reversing light relay
Hazard warning light switch
Reversing light switch
Diagnosis connection
Multi-function switch
Ignition cut-off delay relay
Automatic gearbox control unit
32 20 Injectors
Cruise control system switch
33 15 Cigarette lighter
Cigarette lighter, rear
34 15 Secondary air pump relay
Solenoid valves
Secondary air inlet valve
Turbocharger divert air valve
Air mass meter
Heater for lambda probes
Intake manifold change-over valve
35 30 Trailer socket
36 15 Front and rear fog light switch
37 20 Radio
Amplifier with bass loudspeaker
Aerial selection control unit
Operating electronics control unit, navigation
Navigation/TV tuner
Navigation interface
Chip card reader unit
38 20 Central locking control unit
39 15 Hazard warning light switch
40 25 Dual tone horn relay
41 25 Allroad: Relay for ABS solenoid valves
42 25 ABS control unit
43 5 Radio
Operating electronics control unit, navigation
44 30 Auxiliary heater relay
Solar cells isolation relay 2
Heated driver's seat regulator
Heated front passenger's seat regulator
Heated rear left seat switch with regulator
Heated rear right seat switch with regulator

3-point relay carrier in electronics box, plenum chamber

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Fuse Box Chart


Engine Compartment Fuse Box
No. Description
1 RS6: Secondary air pump relay 
1a Allroad: Radiator fan relay
1b Allroad: Continued coolant circulation relay
Additional coolant pump relay
2 Secondary air pump relay 
3 Petrol: Motronic current supply relay
Diesel: Diesel direct injection system relay
Automatic Gearbox 01J: Ignition cut-off delay relay
4 Fuel cooling pump relay
RS6: Continued coolant circulation relay
4a  -
5 Engine control unit fuse
Allroad: Engine electronics fuse
6 LHD:
V6 TDI, V8 TDI (RHD): Fuse 2 for glow plugs
1.9 TDI (RHD): Fuse for glow plugs
Allroad (RHD): Radiator fan fuse
7 V6 TDI, V8 TDI (LHD): Fuse for glow plugs
Petrol (LHD): Secondary air pump fuse
RHD (→2000): Auxiliary heater fuse
8 LHD (→2000): Auxiliary heater fuse
RHD: -
9 V6 TDI, V8 TDI (LHD): Fuse 2 for glow plugs
1.9 TDI (LHD): Fuse for glow plugs
Allroad (LHD): Radiator fan fuse
RS6 (LHD): Coolant pump fuse
RHD: -
10 LHD: Fuse for fuel cooling
Automatic Gearbox 01J (LHD): Fuse -1- (15)
Allroad (LHD): Radiator fan control unit fuse
RHD: -

Fuses not in relay carrier:


     Left-hand drive vehicles (LHD): 
          -  From model year 2001 onwards auxiliary heater fuse not in electronics box
     Right-hand drive vehicles (RHD): 
          -  From model year 2001 onwards auxiliary heater fuse not in electronics box
          -  Fuse for fuel cooling
          -  Automatic Gearbox 01J: Fuse -1- (15)
          -  Allroad: Radiator fan control unit fuse

Relay Block No.1 (13-point relay carrier)

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Relay Location
Behind driver's storage compartment


Relay Holder
No. Description
1 USA: Dual tone horn relay (telematics) 
2 Alternator cut-in relay
Taxi: Alarm system control unit
Police: Siren relay
Special Vehicles: Alarm system relay, light change-over
3 Solar cell isolation relay
Taxi: Alarm system control unit
Police: Siren relay
Special Vehicles: Alarm system relay 2, intermittent main beam
4 Starter inhibitor relay
Starter inhibitor and reversing light relay
5 Magnetic coupling relay
Auxiliary heater relay
6 Fog light relay
Diesel: Fuel pump relay
7 Multi-function steering wheel control unit 
8 Multi-function steering wheel control unit
9 Bulb monitoring device 
10 Bulb monitoring device
11 Exterior mirror fold system control unit 
12 Exterior mirror fold system control unit 
13 Servotronic control unit 
14 Taxi: Taximeter fuse
Police: Fuse E
Allroad: Hydraulic pump relay fuse
15  -
16 Taxi: Alarm system fuse
Police: Fuse B
17 Taxi: Taximeter and alarm system fuse
Police: Fuse C
Special Vehicles: Intercom system fuse
Canada: Fog light fuse (daytime driving lights)
18 Fitted at any vacant points
     Special Vehicles: Alternator cut-in relay 
     Taxi: Alarm system II control unit 
     Police: Flasher relay for main beam headlight alarm system
     Taxi: Solar cell isolation relay

Relay Block No.2 (Micro-central electrics)

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Fuel Pump Relay Location
Behind driver's storage compartment
Relay Holder
No. Description
1 Dual tone horn relay
2 X contact relief relay
3 Allroad: Low range gearing hydraulic pump relay 
4 Petrol: Fuel pump relay 
Diesel: Relay for glow plugs
5 Automatic intermittent wash/wipe relay
6 Automatic intermittent wash/wipe relay
A Steering column adjustment fuse
B Rear roller blind fuse
C 05.2002→: Multi-function steering wheel fuse (blue)
Taxi: Alarm system 2 fuse
Police: Fuse C 
Special Vehicles: Fuse for rear lid emergency release 

Relay Block No.3 (8-point relay carrier (left-hand drive vehicles))

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Radiator Fan Relay Location


Behind driver's storage compartment, behind micro-central electrics
Relay Holder
No. Description
1 Relay for solenoid valves - ABS with ESP
2 Radiator fan 2nd speed relay
3 Radiator fan relay
Continued coolant circulation relay
4 Radiator fan run-on relay
5  -
6 Allroad: Self-levelling suspension compressor relay 
7 Return flow pump relay - ABS with ESP 
8 Coolant shut-off valve relay 
14 Allroad: Seat adjustment thermo-fuse, driver's side 
15 Fuse for 12 V socket 
16 Front electric window thermo-fuse 
17 Rear electric window thermo-fuse 
18 ABS control unit fuse 
19 Radiator fan fuse
20 Radiator fan control unit fuse 
21 Seat adjustment thermo-fuse, driver's side
Allroad: Radiator fan fuse
22 Self-levelling suspension fuse
24 Seat adjustment thermo-fuse, front passenger's side 

Fitted at any vacant position: Vermin repellent system fuse - S165

Relay Block No.3 (8-point relay carrier (right-hand drive vehicles))

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Relay Block Scheme
Behind driver's storage compartment, behind micro-central electrics
Relay Holder
No. Description
2 Allroad: Self-levelling suspension compressor relay 
3 Radiator fan run-on relay
4 Relay for solenoid valves - ABS with ESP
5 Radiator fan relay 
6 Return flow pump relay - ABS with ESP 
7 Radiator fan 2nd speed relay 
8  -
9  -
10  -
11 Self-levelling suspension fuse
RS6: Seat adjustment thermo-fuse, front passenger's side
12 Seat adjustment thermo-fuse, front passenger's side
RS6: Radiator fan fuse
13 Front electric window thermo-fuse 
14 Rear electric window thermo-fuse 
15 Seat adjustment thermo-fuse, driver's side
16 Radiator fan fuse
17 Radiator fan control unit fuse
RS6: Fuse for 12 V socket
18 ABS control unit fuse
19 Fuse for 12 V socket

Relay Block No.4

   Left-hand drive vehicles

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Relay Location

   Right-hand drive vehicles

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Purpose of the Relay


Relay carrier, driver's side, behind dash panel at central carrier
Relay Holder
No. Description
1 Low heat output relay
Brake servo relay
2 Auxiliary heater relay
Solar cells isolation relay 2
3 High heat output relay 
A  -
B  -
C Additional heater fuse 2
Hydraulic pump relay fuse (brake servo)
RS6 (LHD): Fuel pump fuse
D Additional heater fuse
RS6 (RHD): Fuel pump fuse

Fuse in plenum chamber

1997-2005 Audi A6 / S6 / RS6 / Allroad (C5) Auxiliary heater fuse location
Fuses Description
No. Description
1 V8 only: Fuse -1- (30) - S204
2 Fuse -2- (30) - S205
3 Auxiliary heater fuse

Fuse in plenum chamber (RS6)

1997-2005 Audi RS6 (C5) Fuse Location
Fuses Description
No. Description
1 Fuse -2- (30) - S205
2 Fuse -1- (30) - S204
3 Battery screw connection

The fuses are located below coolant expansion tank.

Location and description of fuses and relay Audi A6 (C5), S6, RS6 and Audi Allroad (4BH) with engine 1.8, 2.0, 2.4, 2.7, 2.8, 3.0, 4.2 and diesel 1.9 TDI, 2.5 TDI (1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005)