1997-2005 Audi A6 / S6 / RS6 / Allroad (C5)
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)
Fuse box driver side dash panel
| 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
| 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)
Behind driver's storage compartment
| 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)
Behind driver's storage compartment
| 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))
Behind driver's storage compartment, behind micro-central electrics
| 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))
Behind driver's storage compartment, behind micro-central electrics
| 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
Right-hand drive vehicles
Relay carrier, driver's side, behind dash panel at central carrier
| 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
| No. | Description |
|---|---|
| 1 | V8 only: Fuse -1- (30) - S204 |
| 2 | Fuse -2- (30) - S205 |
| 3 | Auxiliary heater fuse |
Fuse in plenum chamber (RS6)
| No. | Description |
|---|---|
| 1 | Fuse -2- (30) - S205 |
| 2 | Fuse -1- (30) - S204 |
| 3 | Battery screw connection |
The fuses are located below coolant expansion tank.
