Our article contains information about relay blocks and fuses for the Audi A6 C5 . The second generation Audi A6 was produced in 1997, 1998, 1999, 2000, 2001, 2002, 2003 and 2004 as a sedan and station wagon (Avant) and received the model designation C5.
Audi A6 C5 interior fuse box
- 3-socket mounting block
- Mounting block with 8 sockets
- Central switchboard with relay box
- Main fuse box
- 13-slot mounting block
- Mounting block in the tap-off box
Before replacing a fuse, disconnect the corresponding load and turn off the ignition.
3-socket mounting block
Description
| 1 | Low Power Heater Relay – J359 Brake Booster Relay – J569 |
| 2 | Auxiliary Heating Relay – J8 Solar Isolation Relay – J354 |
| 3 | High Performance Heating Relay -J360 |
| AND | Unused |
| B | Unused |
| C | Auxiliary Heater 2 Fuse – S143 Hydraulic Pump (Brake Booster) Fuse – S279 Fuel Pump Fuse – S81 (RS6 LHD) |
| D | Auxiliary heating fuse – S109 Fuel pump fuse – S81 (RS6 RHD) |
Mounting block with 8 sockets
This relay box is located behind the central switchboard. Here’s a diagram.
Program description
| 1 | Solenoid Valve Relay – ABS with ESP – J106 |
| 2 | Radiator Fan Relay (2nd Gear) – J101 |
| 3 | Radiator Fan Relay -J26 Coolant Bleed Relay after Engine Shutdown -J151 |
| 4 | Radiator Fan Relay – J138 |
| 5 | Unused |
| 6 | Air Suspension Compressor Relay – J403 (Allroad) |
| 7 | Hydraulic Pump Relay – ABS with ESP – J105 |
| 8 | Coolant Shut-Off Valve Relay – J541 |
| 14 | Thermal fuse for driver’s seat adjustment – S44 (Allroad) |
| 15 | 12V Plug-in Fuse – S184 |
| 16 | Front Electric Window Thermal Fuse – S37 |
| 17 | Rear Electric Window Thermal Fuse – S43 |
| 18 | ABS unit fuse – S123 |
| 19 | Radiator Fan Fuse – S42 |
| 20 | Radiator Fan Controller Fuse – S142 |
| 21 | Driver’s seat adjustment thermal fuse – S44 Radiator fan fuse – S42 (Allroad) |
| 22 | Air suspension mount – S110 (Allroad) |
| 24 | Thermal fuse for passenger seat adjustment – S80 |
Central switchboard
Deciphering
| 1 | Horn Relay – J4 |
| 2 | Discharge relay X-contact – J59 |
| 3 | Lower Hydraulic Pump Relay – J555 (Allroad) |
| 4 | Fuel Pump Relay – J17 (Petrol Engines) Glow Plug Relay – J52 (Diesel Engines) |
| 5 | Wiper and Washer Relay – J31 |
| 6 | Wiper and Washer Relay – J31 |
| AND | Steering Column Adjustment Lock – S275 |
| B | Rear Curtain Protection – S100 |
| C | Fuse II of the alarm control unit – S181 (taxi) Fuse C – S204 (police vehicles) Fuse for the rear emergency exit cover – S195 (special vehicles) Fuse for the multifunction steering wheel control unit – S326 |
Main fuse box
It is located on the left side of the dashboard, under a protective cover.
Check the circuit description using the table on the back cover.
| NO. | Current consumer |
| 1 | 5A Heated windshield washer jets, heated exterior mirrors |
| 2 | 10A turn signal |
| 3 | 5A Headlight cleaner, lighting |
| 4 | 5A License plate lighting |
| 5 | 10A Seat heating, lamp controls, catalytic converter, lighting switches, exterior mirror switches and motors, airbag warning light, outside temperature display, air conditioning, permanent heating, rear curtain, sunroof, navigation system |
| 6 | 5A Central locking |
| 7 | 10A ABS Control Unit, Brake Lights and Clutch Pedal Switch |
| 8 | 5A Telephone, Telematics |
| 9 | 10A Heated mirrors |
| 10 | 5A Automatic headlight range adjustment |
| 11 | 10A Cruise control with Multitronic automatic transmission |
| 12 | 10A power supply for the self-diagnosis system |
| 13 | 10A brake light |
| 14 | 10A interior lighting, reading lights, warning alarm, sun visor mirror, seat memory |
| 15 | 10A Instrument cluster, air conditioning, seat and mirror memory, preheating system clock, navigation system |
| 16 | 5A Electronic Stability Control |
| 17 | 10A navigation system |
| 18 | 10A right high beam |
| 19 | 10A left high beam |
| 20 | 10/15A Right low beam, right headlight tilt correction |
| 21 | 10/15A Left low beam, left headlight range adjustment |
| 22 | 5A Right side and parking light |
| 23 | 5A Left side and parking light |
| 24 | 25A Windshield Wiper, Washer Pump, Interval Timer Relay |
| 25 | 30A fan, air conditioning, permanent heating, sunroof |
| 26 | 30A Heated rear window |
| 27 | 15A steering wheel heating |
| 28 | Fuel pump 20A |
| 29 | 20/30A engine electronics |
| 30 | 20A Lift-and-slide roof |
| 31 | 15A reverse light, cruise control, automatic transmission, auto-dimming interior rearview mirror |
| 32 | 20A Electronic Engine Control Systems |
| 33 | Cigarette lighter fuse 15A Audi A6 C5 |
| 34 | 15A Electronic engine control systems |
| 35 | 30A “Plus” continuous power supply for trailers |
| 36 | 15A Fog lights, rear fog lights |
| 37 | 20A telephone, radio |
| 38 | 20A trunk light, central locking |
| 39 | 15A Warning Alarm |
| 40 | Horn 25A |
| 41 | 25A Anti-lock braking system/electronic stability control |
| 42 | 25A Electronic Stabilization System |
| 43 | 5A S contacts (radio) |
| 44 | 30A seat heating |
Fuse no. 33 with a current of 15A is responsible for the cigarette lighter.
13-slot mounting block
Deciphering
| 1 | Horn Relay – J4 (Telematics – USA) |
| 2 | Alternator Connection Relay – J442 Alarm Control Unit – J85 (Taxi) Siren Relay – J408 (Police Vehicles) Alarm Relay Lights Circuit – J549 (Special Vehicles) |
| 3 | Solar Isolation Relay -J309 Alarm Control Unit – J85 (Taxi) Siren Relay – J408 (Police Vehicles) Alarm Relay, High Beam Alarm – J461 (Special Vehicles) |
| 4 | Starter Lockout Relay – J207 Starter Lockout and Reverse Light Relay – J226 |
| 5 | Magnetic Clutch Relay – J44 Auxiliary Heater Relay – J8 |
| 6 | Fog Light Relay – J5 Fuel Pump Relay – J17 (TDI Engines) |
| 7 | Multifunction steering wheel control unit – J453 |
| 8 | Multifunction steering wheel control unit – J453 |
| 9 | Lamp Monitoring Device – J123 |
| 10 | Lamp Monitoring Device – J123 |
| 11 | Mirror folding control unit – J351 |
| 12 | Mirror folding control unit – J351 |
| 13 | Servotronic Control Unit – J236 |
| 14 | Taximeter fuse – S182 Electrical fuse – S201 (Police vehicles) Hydraulic pump relay fuse – S279 (Allroad) |
| 15 | Unused |
| 16 | Security Alarm Fuse – S57 (Taxi) Fuse B – S202 (Police Cars) |
| 17 | Taximeter and Security Alarm Fuse – S183 (Taxi) Fuse C – S203 (Police Vehicles) Radio Fuse – S253 (Special Vehicles) Fog Lamp Fuse – S28 (Daytime Running Lights – Canada) |
| 18 | Mounts in any available space. Alternator Connection Relay – J442 (special vehicles); Alarm Control Panel II – J430 (taxi); Flashing Light Relay – J182 (police vehicles) ; Solar Battery Cut-Off Relay – J309 (taxi) |
Mounting block in the tap-off box
Descriptive table
| 1 | Secondary Air Pump Relay – J299 (RS6) |
| 1a | Radiator Fan Relay (Allroad) – J26 |
| 1b | Coolant Pump Relay After Shutdown Engine (Allroad) – J151 Auxiliary Coolant Pump Relay – J496 |
| 2 | Secondary Air Pump Relay – J299 |
| 3 | Motronic Power Supply Relay – J271 (Petrol Engines) Diesel Direct Injection Relay – J322 (Diesel Engines) ABS Relay – J64 (Automatic Transmission – 01J) |
| 4 | Fuel Coolant Pump Relay – J445 Engine Shutdown Coolant Pump Relay – J151 (RS6) |
| 4a | Unused |
| 5 | Engine control unit fuse – S102 Engine electronics fuse (Allroad) – S282 |
| 6 | Unused (left-hand drive vehicles) Glow plug fuse – S125 (engines: V6 TDI, V8 TDI) Glow plug fuse – S39 (four-cylinder engines) Radiator fan fuse – S94 (Allroad) |
| 7 | Glow plug fuse – S39 (engines: V6 TDI, V8 TDI) Secondary air pump fuse – S130 (petrol engines) Auxiliary heater fuse – S62 (right-hand drive vehicles) Not used (right-hand drive vehicles) |
| 8 | Auxiliary Heater Fuse – S62 (Left-Hand Drive Vehicles) Not used (Left-Hand Drive Vehicles) |
| 9 | Glow Plug Fuse – S125 (Engine: V6 TDI, V8 TDI) Glow Plug Fuse – S39 (Four-cylinder engines) Radiator Fan Fuse – S94 (Allroad) Coolant Pump Fuse – S78 (RS6) Not used (Right-Hand Drive Vehicles) |
| 10 | Fuel cooling pump fuse – S262 Fuse -1- (15) – S199 (01J Automatic gearbox) Radiator fan control unit fuse – S142 (Allroad) Not used (right-hand drive) |
Individual fuses:
Left-hand drive:
– Auxiliary heater – S62 (from 2001)
Right-hand drive:
– Auxiliary heater – S62 (from 2001)
– Fuel cooling pump fuse – S262
– Fuse -1- (15) – S199 (automatic gearbox 01J)
– Radiator fan control unit fuse – S142 (Allroad)