The Audi Allroad C5 is a four-wheel drive all-terrain vehicle based on the Audi A6 platform. It was produced in 1999, 2000, 2001, 2002, 2003, 2004, 2005 and 2006. After that, the model underwent a generation update. Our material is presented by Audi Allroad fuse and relay boxes with diagrams and decoding of their elements.
Arrangement

- 3-slot mounting box
- 8-slot mounting box
- Central switchgear with relay box
- Main fuse block
- 13-slot mounting box
- Mounting box in pressure box
3-slot mounting box
Scheme

Marking
| 1 | Low thermal power relay – J359 Brake servo relay – J569 |
| 2 | Auxiliary heater relay – J8Solar isolation relay – J354 |
| 3 | High power relay -J360 |
| A | Not used |
| B | Not used |
| C | Auxiliary heater fuse 2 – S143 Hydraulic pump fuse (brake booster) – S279 Fuel pump fuse – S81 (RS6 LHD) |
| D | Auxiliary heater fuse – S109 Fuel pump fuse – S81 (RS6 RHD) |
8-slot mounting box

This relay box is located behind the central distribution device. Here is its diagram.

Appointment
| 1 | Solenoid valve relay – ABS with ESP – J106 |
| 2 | Radiator fan relay (2 speed) – J101 |
| 3 | Radiator fan relay – J26 Coolant pump relay after engine stop -J151 |
| 4 | Radiator fan switch relay – J138 |
| 5 | Not used |
| 6 | Air suspension compressor relay – J403 (Allroad) |
| 7 | Hydraulic pump relay – ABS with ESP – J105 |
| 8 | Coolant shut-off valve relay – J541 |
| 14 | Driver’s seat adjustment thermal fuse – S44 (Allroad) |
| 15 | Fuse for 12V connector – S184 |
| 16 | Front window thermal fuse – S37 |
| 17 | Rear window thermal fuse – S43 |
| 18 | ABS fuse block – S123 |
| 19 | Radiator fan fuse – S42 |
| 20 | Radiator fan control unit fuse – S142 |
| 21 | Driver’s seat adjustment thermal fuse – S44 Radiator fan fuse – S42 (Allroad) |
| 22 | Air suspension fuse – S110 (Allroad) |
| 24 | Passenger seat adjustment thermal fuse – S80 |
The air suspension compressor relay has burned out, a possible cause of its incorrect operation.
Central switchgear

Scheme

Protected components
| 1 | Horn Relay – J4 |
| 2 | Relay contact discharge X – J59 |
| 3 | Range reduction hydraulic pump relay – J555 (Allroad) |
| 4 | Fuel Pump Relay – J17 (Gasoline Engines) Glow Plug Relay – J52 (Diesel Engines) |
| 5 | Wiper and Washer Relay – J31 |
| 6 | Wiper and Washer Relay – J31 |
| A | Steering column adjustment fuse – S275 |
| B | Rear curtain fuse – S100 |
| C | Alarm unit fuse II – S181 (taxis) Fuse C – S204 (police cars) Rear emergency exit cover fuse – S195 (special vehicles) Multifunction control unit fuse – S326 |
Main fuse block
Located on the left side of the dashboard under a protective cover.

Check the circuit description with the table on the back cover.

Protected schemes
| Purpose of fuses | ||
| None. | A | Consumer |
| 1 | 5 | Heating of jets, mirrors |
| 2 | 10 | Turn signals |
| 3 | 5 | Lighting.Headlight cleaner relay |
| 4 | 5 | License plate lighting |
| 5 | 10 | Instrument cluster, heated seats, diagnostic connector for cruise control, bulb status control unit, catalytic converter, switch illumination, gearshift indicator, airbag indicator lamp, air conditioning, parking heater, rear window blind, sunroof, parking assist sensors |
| 6 | 5 | central lock |
| 7 | 10 | ABS, brake light switch. Clutch pedal switch |
| 8 | 5 | Telephone |
| 9 | 10 | Heated mirrors |
| 10 | 5 | Automatic headlight adjustment |
| 11 | 10 | Cruise control (vehicles with automatic transmission), Multitronic gearbox control unit |
| 12 | 10 | Self-diagnostic system |
| 13 | 10 | Stop signs |
| 14 | 10 | Interior lighting, reading lights, burglar alarm, vanity mirror lighting, seat memory |
| 15 | 10 | Instrument panel, air conditioning, seat and mirror memory, parking heater timer, navigation system |
| 16 | 5 | Vehicle stability stabilization system |
| 17 | 10 | Ground clearance regulator (air suspension) |
| 18 | 10 | Headlight, high beam, right |
| 19 | 10 | Left high beam headlight |
| 20 | 15 | Right dipped beam headlight, headlight range adjustment |
| 21 | 15 | Left dipped beam headlight, headlight range adjustment |
| 22 | 5 | Right side marker / side marker light |
| 23 | 5 | Left side marker / side marker light |
| 24 | 25 | Wiper, washer pump, intermittent relay |
| 25 | 30 | Heater A C fan, parking heater |
| 26 | 30 | Heated rear window, air recirculation in the cabin |
| 27 | 15 | Heated steering wheel, rear window wiper |
| 28 | 20 | Fuel pump, auxiliary pump for diesel vehicles |
| 29 | 30 | Engine control unit. |
| 30 | 20 | Luke |
| 31 | 15 | Reversing lights, cruise control, automatic transmission, diagnostic socket |
| 32 | 20 | Engine control unit |
| 33 | 15 | Cigarette lighter fuse |
| 34 | 15 | Engine control unit |
| 35 | 30 | Hitch socket |
| 36 | 15 | Fog lights, rear fog light |
| 37 | 20 | Telephone, radio |
| 38 | 20 | Trunk lamp, central locking |
| 39 | 15 | Light alarm |
| 40 | 25 | Sound signal |
| 41 | 25 | ABS, stability control system |
| 42 | 25 | Vehicle stability stabilization system |
| 43 | 5 | Radio terminal C |
| 44 | 30 | Heated seats, parking heater |
Fuse No. 33 at 15A is responsible for the cigarette lighter.
13-slot mounting box

Scheme

Marking
| 1 | Horn Relay – J4 |
| 2 | Alternator connection relay – J442 Anti-theft alarm control unit – J85 (taxis) Horn relay – J408 (police vehicles) Anti-theft alarm relay, light switching – J549 (special vehicles) |
| 3 | Solar battery isolation relay -J309 Anti- theft alarm control unit – J85 (taxis) Horn relay – J408 (police vehicles) Security alarm relay, high beam warning – J461 (special vehicles) |
| 4 | Starter lockout relay Relay -J207 Starter lockout relay and reversing light – 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 control unit – J123 |
| 10 | Lamp control unit – J123 |
| 11 | Mirror folding control unit – J351 |
| 12 | Mirror folding control unit – J351 |
| 13 | Servotronic control unit – J236 |
| 14 | Taximeter fuse – S182 Fuse E – S201 (police cars) Hydraulic pump relay fuse – S279 (Allroad) |
| 15 | Not used |
| 16 | Security alarm fuse – S57 (taxis) Fuse B – S202 (police cars) |
| 17 | Taximeter and alarm fuse – S183 (taxis) Fuse C – S203 (police cars) Radio fuse – S253 (special vehicles) Fog light fuse – S28 (daytime running lights – Canada) |
| 18 | Installable anywhere Generator connection relay – J442 (special vehicles) Anti-theft alarm control unit II – J430 (taxi) Light alarm relay – J182 (police vehicles) Solar battery isolation relay – J309 (taxi) |
Mounting box in pressure box

Appointment
| 1 | Secondary air pump relay – J299 (RS6) |
| 1a | Radiator fan relay (Allroad) – J26 |
| 1b | Coolant circulation relay after engine shutdown (Allroad) – J151 Auxiliary coolant pump relay – J496 |
| 2 | Secondary air pump relay – J299 |
| 3 | Motronic power relay – J271 (petrol engines) Diesel direct injection relay – J322 (diesel engines) Relay, anti-lock braking system – J64 (automatic transmission – 01J) |
| 4 | Fuel cooling pump relay – J445 Engine shutdown cooling pump relay – J151 (RS6) |
| 4a | Not used |
| 5 | Engine control unit fuse – S102 Engine electronics fuse (Allroad) – S282 |
| 6 | Not used (LHD) Glow plug fuse – S125 (V6 TDI, V8 TDI engines ) Glow plug fuse – S39 (4-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 (engines: V6 TDI, V8 TDI) Glow plug fuse – S39 (4-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 (automatic transmission 01J) Radiator fan control unit fuse – S142 (Allroad) |
Individual fuses: Left-hand drive vehicles: – Auxiliary heater – S62 (from 2001) Right-hand drive vehicles: – Auxiliary heater – S62 (from 2001) – Fuel cooling pump fuse – S262 – Fuse -1- (15) – S199 (automatic transmission 01J) – Radiator fan control unit fuse – S142 (allroad)