Audi Allroad С5 – fuse and relay

Audi Allroad C5 is an all-wheel drive all-terrain station wagon made on the Audi A6 platform. Released in 1999, 2000, 2001, 2002, 2003, 2004, 2005 and 2006. After that, the model has undergone a generation update. Our material presents Audi Allroad fuses and relay boxes with diagrams and decoding of their elements.


general arrangement of fuse boxes

  1. 3-slot mounting box
  2. 8-slot mounting box
  3. Central switchgear with relay box
  4. Main fuse box
  5. 13-slot mounting box
  6. Mounting box in plenum box

3-slot mounting box


3 mounting fuse box


1Low heat output
relay – J359 Brake servo relay – J569
2Auxiliary heater relay – J8 Solar isolation relay – J354
3High power relay -J360
ANot used
BNot used
CAuxiliary heater
fuse 2 – S143 Hydraulic pump fuse (brake booster) – S279
Fuel pump fuse – S81 (RS6 LHD)
DAuxiliary Heater
Fuse – S109 Fuel Pump Fuse – S81 (RS6 RHD )

8-slot mounting box

relay box in a6 c5

This relay box is located behind the central switchgear. Here is a diagram of it.

relay box a6 c5


1Relay for solenoid valves – ABS with ESP – J106
2Radiator fan relay (2nd speed) – J101
3Radiator fan relay – J26
Relay for pumping coolant after engine shutdown -J151
4Radiator fan switch relay – J138
5Not used
6Air suspension compressor relay – J403 (Allroad)
7Hydraulic pump relay – ABS with ESP – J105
8Coolant shut-off valve relay – J541
14Thermal fuse for driver’s seat adjustment – S44 (Allroad)
15Fuse for 12V connector – S184
16Thermal fuse for front power windows – S37
17Thermal fuse for rear power windows – S43
18ABS block fuse – S123
19Radiator fan fuse – S42
20Fuse for radiator fan control unit – S142
21Driver’s seat adjustment thermo-
fuse – S44 Radiator fan fuse – S42 (Allroad)
22Air Suspension Fuse – S110 (Allroad)
24Thermal fuse for passenger seat adjustment – S80

Burnt air suspension compressor relay, a possible reason for its incorrect operation.

Central switchgear

Central switchgear

CIA relay blocks

Protected components

1Horn relay – J4
2Relay X contact unloading – J59
3Reducing range hydraulic pump relay – J555 (Allroad)
4Fuel pump relay – J17 (petrol engines)
Glow plug relay – J52 (diesel engines)
5Wiper and washer relay – J31
6Wiper and washer relay – J31
ASteering column adjustment fuse – S275
BRear curtain fuse – S100
CFuse for alarm control unit II – S181 (taxi)
Fuse C – S204 (police cars)
Fuse for emergency exit rear cover – S195 (special vehicles)
Fuse for multifunction steering wheel control unit – S326

Main fuse box

Located on the left end of the dashboard under the protective cover.

real photo fuse box

Check the diagram description with the table on the back of the cover.

fuse box diagram

Circuits protected

Purpose of fuses
15Heater for jets, mirrors
210Direction indicators
35Lighting. Headlight cleaner relay
45License plate lighting
510Instrument cluster, seat heating, diagnostic plug for cruise control, light bulb status control unit, catalytic converter, switch illumination, gear indicator, airbag warning light, air conditioning, parking heater, rear window blind, sunroof, parking aid sensors
65central locking
710ABS, brake light switch. Clutch pedal switch
910Heated mirrors
105Automatic headlight range control
1110Cruise control (vehicles with automatic transmission), transmission control unit Multitronic
1210Self-diagnosis system
1310Stop lights
1410Interior lighting, reading lights, burglar alarms, vanity mirror lights, seat memory
1510Instrument panel, air conditioning, memory of the position of seats and rear-view mirrors, parking heater timer, navigation system
165Vehicle stability stabilization system
1710Ride height adjuster (air suspension)
1810High beam headlight, right
1910Left high beam headlamp
2015RH low beam headlamp, headlamp tilt adjuster
2115Left low beam headlamp, headlamp tilt adjuster
225Right side marker / parking light
235Left side marker / parking light
2425Windscreen wiper, washer pump, intermittent mode relay
2530Heater / A / C fan, parking heater
2630Heated rear window, cabin air recirculation
2715Heated steering wheel, rear window wiper
2820Fuel pump, auxiliary pump for diesel vehicles
2930The engine control unit.
3115Reversing lights, tempomat, automatic transmission, diagnostic socket
3220The engine control unit
3315Cigarette lighter fuse
3415The engine control unit
3530Trailer coupling socket
3615Fog lights, rear fog light
3720Telephone, radio
3820Trunk lamp, central locking
3915Light alarm
4025Sound signal
4125ABS, stability stabilization system
4225Vehicle stability stabilization system
435Radio terminal S
4430Seat heater, parking heater

Fuse number 33 at 15A is responsible for the cigarette lighter.

13-slot mounting box

block location


13 relay box


1Horn relay – J4
2Alternator connection relay – J442 Anti-
theft alarm control unit – J85 (taxi)
Horn relay – J408 (police vehicles) Anti-
theft alarm relay, light changeover – J549 (special vehicles)
3Solar battery isolation relay -J309 Anti-
theft alarm control unit – J85 (taxi)
Horn relay – J408 (police vehicles)
Burglar alarm relay, high-beam warning – J461 (special vehicles)
4Starter lock
relay -J207 Starter lock relay and reverse light – J226
5Magnetic clutch relay – J44 Auxiliary heater
relay – J8
6Fog light relay – J5
Fuel pump relay – J17 (TDI engines)
7Multifunction steering wheel control unit – J453
8Multifunction steering wheel control unit – J453
9Lamp control device – J123
10Lamp control device – J123
11Control unit for folding mirrors – J351
12Control unit for folding mirrors – J351
13Servotronic control unit – J236
14Fuse taximeter – S182
Fuse E – S201 (police cars)
Fuse hydraulic pump relay – S279 (Allroad)
15Not used
16Burglar Alarm Fuse – S57 (Taxi)
Fuse B – S202 (Police Cars)
17Taximeter and burglar alarm fuse – S183 (taxi)
C fuse – S203 (police cars)
Walkie talkie fuse – S253 (special vehicles)
Fog lamp fuse – S28 (daytime running lights – Canada)
18Installed 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 plenum box

block in the engine compartment


1Secondary air pump relay – J299 (RS6)
1aRadiator fan relay (Allroad) – J26
1bCoolant circulation relay after off engine (Allroad) – J151
Relay for auxiliary coolant pump – J496
2Secondary air pump relay – J299
3Motronic supply relay – J271 (petrol engines)
Diesel direct injection relay – J322 (diesel engines)
Relay, anti-lock device – J64 (automatic transmission – 01J)
4Fuel cooling pump relay – J445
Coolant pump relay after off engine – J151 (RS6)
4aNot used
5Fuse for engine control unit – S102
Fuse for engine electronics (Allroad) – S282
6Not used (LHD)
Glow plug fuse – S125 (V6 TDI, V8 TDI
Glow plug fuse – S39 ( 4-cylinder engines) Radiator fan fuse – S94 (Allroad)
7Glow 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)
8Auxiliary Heater Fuse – S62 (LHD Vehicles)
Not Used (LHD Vehicles)
9Glow 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)
10Fuel cooling pump fuse – S262
Fuse -1- (15) – S199 (automatic gearbox 01J)
Fuse for radiator fan control unit – S142 (Allroad)

Separate fuses: LHD 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)

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Comments 1

  • What are the larger numbered relays for? (204, 370, 372, 603, etc.) The ones above the 8-slot mounting box diagram.



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