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Fuse box diagram (fuse layout), location and assignment of fuses and relays of Audi A2 (8Z; 1999, 2000, 2001, 2002, 2003, 2004, 2005).
Checking and Replacing Fuses
The wiring circuits in the vehicle are protected from short circuits by fuses. This greatly reduces the chance of damage caused by electrical problems.
To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.
Fuses of the same amperage can be temporarily borrowed from another fuse location if a fuse goes out. Replace the fuse as soon as possible.
Note
- Before replacing a fuse check that the key has been removed from the ignition and that all the services are switched off and/or disengaged.
- When replacing a blown fuse, it is important to use only a fuse having the correct amperage rating. The use of a fuse with a rating other than indicated may result in a dangerous electrical system overload.
- If a properly rated fuse continues to blow, it indicates a problem in the circuit that must be corrected.
Location
- Main fuse 150 A
- Relay carrier (9-point)
- Fuse box
- Relay carrier (6+6-point)
- Relay carrier (3-point)
- Connector point, A-pillar, left
- Connector point, A-pillar, right
Main fuse (150A)
Located on the battery “+” terminal.
9-point relay carrier
Located in the footwell, front left.
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| № | A | Designation |
|---|---|---|
| A | 1 | Multi-function steering wheel fuse (S326) |
| В | 60 | Additional heater fuse (S126) |
| C | 40 | Radiator fan control unit fuse (S142) |
| 1 | 10 | Control unit with display in dash panel insert |
| 2 | 20 | Navigation interface Radio, Voltage stabilizer 2, Aerial selection control unit, Operating electronics control unit, navigation, Navigation/TV tuner, Amplifier |
| 3 | 20 | Voltage stabiliser |
| 4 | 20 | Radiator fanRadiator fan thermo-switch |
| 6 | 25 | Automatic intermittent wash/wipe relay |
| Washer pump switch | ||
| Intermittent wiper switch | ||
| 7 | 15 | Hazard warning light relay |
| 8 | 25 | Dual-tone horn relay, Horn/dual-tone horn |
| Sliding sunroof adjustment control unit | ||
| 10 | 30 | Trailer socket |
| 11 | 20 | 12 V socket |
| 12 | 15 | Cigarette lighter |
| 13 | 15 | Heated driver’s seat regulator, Heated front passenger’s seat regulator |
| 14 | 30 | Low heat output relay |
| 14 | 20 | Heater control unit |
| 15 | 30 | Air соnditioning system/Climatronic operating and display unit |
| Heated rear window | ||
| Heated rear window relay | ||
| 16 | 30 | Fresh air blower switch |
| Fresh air blower control unit | ||
| 18 | 20 | Fuel pump (pre-supply pump) |
| 19 | 20 | Lambda probe heater, Lambda probe 1 heater, downstream of catalytic converter |
| Activated charcoal filter system solenoid valve 1 (pulsed) | ||
| NOx sensor control unit | ||
| 20 | 20 | 4LV (injection system) control unit |
| Ignition coil -1- with output stage | ||
| Ignition coil -2- with output stage | ||
| Ignition coil -3- with output stage | ||
| Ignition coil -4- with output stage | ||
| 22 | 10 | Twin filament bulb for headlight, left |
| 23 | 15 | Bulb check warning unit, Headlight range control motor, right |
| Twin filament bulb for headlight, right | ||
| 24 | 15 | Bulb check warning unit, Headlight range control motor, left |
| Twin filament bulb for headlight, left | ||
| 25 | 5 | Mobile telephone operating electronics control unit |
| Telephone/telem atics control unit | ||
| Aerial amplifier, mobile telephone | ||
| 26 | 5 | Bulb check warning unit |
| Tail light bulb, right | ||
| Side light bulb, right | ||
| 27 | 5 | Bulb check warning unit |
| Tail light bulb, left | ||
| Side light bulb, left | ||
| 28 | 10 | Diagnostic connector |
| 29 | 15 | Diagnostic connector, Reversing light switch |
| 30 | 10 | Brake light switch |
| 31 | 10 | Brake light switch, Heater element (crankcase breather) (MPI engine, diesel engine), Air mass meter, Low heat output relay, High heat output relay, Cruise control system switch, Radiator fan control unit, Additional air heater control unit, Exhaust gas recirculation valve |
| 32 | 10 | Glove box light, Number plate light, left |
| Number plate light, right | ||
| 33 | 5 | Heater element, left washer jet |
| Heater element, right washer jet | ||
| 34 | 10 | Hazard warning light relay |
| 35 | 15 | Rear left fog light bulb, Front and rear fog light switch |
| 36 | 10 | Anti-theft alarm system horn, Air соnditioning system /Climatronic operating and display unit, Heated rear window relay, Tank filler flap remote release switch, Interior, monitor switch, Convenience system central control unit |
| 37 | 10 | Navigation system with CD drive control unit |
| Parking aid control unit | ||
| 38 | 10 | Automatic anti-dazzle interior mirror |
| 38 | 10 | Compressor regulating valve, air conditioning system |
| Heated rear window relay | ||
| Fresh air/air recirculating flap switch | ||
| Operating electronics control unit, navigation | ||
| Electronic manual gearbox control unit | ||
| Parking aid control unit | ||
| Power steering control unit | ||
| Navigation system with CD drive control unit | ||
| Telephone/telematics control unit | ||
| Ignition key withdrawal lock control unit | ||
| Additional heating button (ECON), Amplifier, Hazard warning light switch | ||
| 39 | 10 | Door control unit, front passenger's side |
| Door control unit, rear right | ||
| 40 | 10 | Traction соntrol system warning lamp |
| Traction control system switch | ||
| ABS with EDL control unit | ||
| Steering angle sender | ||
| 41 | 10 | Door control unit, driver’s side |
| Door control unit, rear left | ||
| 42 | 10 | Anti-theft alarm ultra-sonic sensor, Convenience system central control unit |
| 43 | 10 | Electronic manual gearbox control unit |
| 44 | 10 | Ignition key withdrawal lock solenoid valve |
| Electronic manual gearbox control unit | ||
| Handbrake warning lamp control unit | ||
| Ignition key withdrawal lock control unit | ||
| 45 | 15 | Injector, cylinder 1, Injector, cylinder 2 |
| Injector, cylinder 3 | ||
| Injector, cylinder 4, Heater element (crankcase breather) (FSI engine), Fuel pressure regulating valve, Inlet camshaft timing adjustment valve -1-, Fuel metering valve, Intake manifold flap airflow control valve | ||
| Map-controlled engine cooling thermostat | ||
| 1 | Consumer switch -off relay (J511) | |
| 4 | High heat output relay (J360) | |
| 5 | Dual tone horn relay (J4) | |
| 6 | Bulb check warning unit (K41) | |
| 7 | Bulb check warning unit (K41) | |
| 8 | Low heat output relay (J359) | |
| 9 | X contact relief relay (J59) | |
6+6-point relay carrier
Located in the footwell, front left.
| № | Designation | |
|---|---|---|
| 1* | Starter inhibitor and reversing light relay (J226) | |
| 2 | Automatic intermittent wash/wipe relay (J31) | |
| 3 | Automatic intermittent wash/wipe relay (J31) | |
| 4* | Gearbox hydraulic pump relay (J510) | |
| 5* | Ignition key withdrawal lock control unit (J557) | |
| 5** | Fuel pump relay (J17) | |
| 6* | Ignition key withdrawal lock control unit (J557) | |
| A | 20 | Hydraulic pump relay fuse (S279) |
| C | 60 | ABS control unit fuse 1 (S123) |
| * - Only applies to engine code ANY ** - Only applies to engine codes BAD, BBY | ||
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3-point relay carrier
| № | A | Designation |
|---|---|---|
| A* | 40 | Strip fuse for glow plugs (engine) (S39) |
| A** | 30 | Engine control unit fuse (S102) |
| A*** | 60 | Strip fuse for glow plugs (engine) (S39) |
| B* | 10 | Engine control unit fuse (S102) |
| B** | 5 | Air mass meter fuse (S74) |
| B*** | 10 | Engine control unit fuse (S102) |
| C | 80 | Fuse -1 - (30) (power steering) (S204) |
| 1* | Terminal 30 voltage supply relay (J317) | |
| 1** | Motronic current supply relay (J271) | |
| 1*** | Relay for glow plugs (J52) | |
| 2* | Automatic glow period control unit (J179) | |
| 2*** | Terminal 30 voltage supply relay (J317) | |
| * - Only applies to engine code ATL ** - Only applies to engine code BAD *** - Only applies to engine codes AMF, ANY, BHC | ||
Connector point, left A-pillar
| № | A | Designation |
|---|---|---|
| A | 30 | Electric window single fuse (front) (S37) |
| C | 10 | Seat adjustment fuse (lumbar support) (S45) |
Connector point, right A-pillar
| № | A | Designation |
|---|---|---|
| C | 30 | Electric window single fuse 2 (rear) (S280) |
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