TorqFix

Fuse box diagram — AUDI A4 (1994–2001)

Other generations: 2001–2005 2005–2009

Type what stopped working — headlight, wipers, lighter — and see which position powers it, and at how many amps.

1994–2001 178 fuses 60 relays 9 boxes

Fuse box 1 (1996)

79
5A 1 Heated washer jets
10A 2 Direction indicators
5A 3 Headlight washer relay
5A 3 Glovebox light(s)
5A 3 Engine compartment light(s)
5A 3 Air-conditioning controls illumination
5A 3 Automatic transmission gear selector illumination
5A 3 Instrument lighting
5A 4 Number plate light(s)
10A 5 Instrument panel
10A 5 Heated seats
10A 5 Transmission display
10A 5 Electric mirror switch
10A 5 Airbag warning light
10A 5 Outside temperature indicator
5A 6 Central locking
10A 7 ABS
10A 7 Or
10A 7 ESP control unit
5A 8 Telephone
10A 9 Heated mirrors
10A 9 Heated door lock(s)
5A 10 Audio (CD changer)
5A 10 Telephone
5A 11 Cruise control (automatic transmission)
10A 12 On-board diagnostic power supply
10A 13 Brake lights
10A 14 Interior light(s)
10A 14 Reading light(s)
10A 14 Security alarm
10A 14 Sun visor light(s)
10A 15 Instrument panel
10A 15 Power windows
10A 15 Automatic transmission
10A 15 Air conditioning
5A 16 ABS
5A 16 Or
5A 16 ESP control unit
10A 17 Heated door locks
10A 18 Main beam, right
10A 19 Main beam, left
10A 20 Dipped beam, right
10A 20 Headlight levelling
10A 21 Dipped beam, left
10A 21 Headlight levelling
10A 21 Left
5A 22 Sidelights, right
5A 22 Tail light, right
5A 23 Sidelights, left
5A 23 Tail light, left
25A 24 Windscreen wiper(s)
25A 24 Windscreen washer(s)
25A 24 Intermittent wiper relay
30A 25 Blower
30A 25 Air conditioning
30A 26 Heated rear windscreen
30A 26 Heated mirror(s)
? 27 Not used
15A 28 Fuel pump
20A 29 Engine management
20A 30 Sunroof
15A 31 Reversing light(s)
15A 31 Cruise control
15A 31 Automatic transmission
20A 32 Engine management
15A 33 Cigarette lighter
15A 34 Engine management
30A 35 Trailer electrics
15A 36 Front fog lights
15A 36 Rear fog light(s)
20A 37 Telephone
15A 38 Luggage compartment light(s)
15A 38 Central locking
15A 39 Hazard warning lights
25A 40 Horn
25A 41 ABS (hydraulic modulator/pump)
40A 42 Blower
? 43 Not used
30A 44 Heated seats

Relay box (1996, Petrol)

20
? 1 Special vehicles
? 2 Special vehicles
? 3 Special vehicles
? 4 Special vehicles
? 5 Not used
relay R1 Not used
relay R2 Multifunction steering wheel
relay R3 Multifunction steering wheel
relay R4 Bulb check control unit
relay R5 Bulb check control unit
relay R6 Taxi alarm
relay R7 Heated rear windscreen
relay R8 Daylight running system relay
relay R8 Taxi alarm
relay R9 Headlight relay
relay R9 Alarm control unit
relay R10 Not used
relay R11 Retractable mirrors
relay R12 Retractable mirrors
relay R13 Automatic transmission

Relay box 1

6
relay R1 X contact relief
relay R2 Horn
relay R3 Headlight washers
relay R4 Immobiliser
relay R5 Intermittent wash/wipe
relay R6 Fuel pump

Relay box (1996) · 1

10
? 1 Additional coolant flow pump
? 2 Engine electrics
? 3 Not used
? 4 Secondary air injection pump
? 5 Not used
? 6 Not used
relay R1 Coolant heater
relay R2 Coolant heater
relay R2 Secondary air pump
relay R3 Injection system

Relay box 2 (1996)

27
? 1 ABS
? 1 Or
? 1 ESP control unit
? 2 Cooling fan
? 3 Cooling fan
? 4 Cooling fan
? 5 Windows, rear
? 6 Windows, front
? 7 Luggage compartment socket(s)
? 8 Accessories
? 9 Passenger's seat adjustment
? 10 Driver's seat adjustment
? 11 Alarm system
relay R1 Cooling fan relay No. 1
relay R2 Cooling fan relay No. 2
relay R3 Cooling fan relay
relay R3 Additional coolant flow pump
relay R4 ESP
relay R5 Active door reflectors control unit
relay R6 Not used
relay R7 ESP
relay R8 Not used
relay R9 Not used
relay R10 Not used
relay R11 Not used
relay R12 Not used
relay R13 Not used

Relay box (1996) · 2

3
relay R1 Vacuum pump
relay R2 Not used
relay R3 Not used

Relay box (1996, Diesel)

20
? 1 Special vehicles
? 2 Special vehicles
? 3 Special vehicles
? 4 Special vehicles
? 5 Not used
relay R1 Not used
relay R2 Multifunction steering wheel
relay R3 Multifunction steering wheel
relay R4 Bulb check control unit
relay R5 Bulb check control unit
relay R6 Taxi alarm
relay R7 Heated rear windscreen
relay R8 Daylight running system relay
relay R8 Taxi alarm
relay R9 Headlight relay
relay R9 Alarm control unit
relay R10 Glow plugs
relay R11 Retractable mirrors
relay R12 Retractable mirrors
relay R13 Automatic transmission

Relay box (1996) · 3

9
? 1 Additional coolant flow pump
? 2 Engine electrics
? 3 Not used
? 4 Glow plug system
? 5 Glow plug system
? 6 Glow plug system
relay R1 Coolant heater
relay R2 Coolant heater
relay R3 Injection system

Fuse box

64
5A 1 Heated washers
5A 1 Heated mirror(s)
5A 2 Hazard warning lights
5A 3 Heated seat(s)
5A 3 Horn
5A 4 Clock
5A 4 Cigarette lighter
5A 4 Interior light(s)
5A 4 On-board computer
5A 4 Radio
5A 4 Check system
5A 5 Mirror(s)
5A 6 Central locking
10A 7 ABS
10A 7 Or
10A 7 ESP control unit
5A 8 Telephone
5A 9 Outside temperature
5A 9 Automatic transmission
? 10 Not used
? 11 Not used
? 12 Not used
10A 13 Brake light(s)
10A 14 Interior light(s)
10A 15 Instrument panel
10A 15 Automatic transmission
5A 16 ABS
5A 16 Or
5A 16 ESP control unit
10A 17 Blower
10A 17 Air conditioning
10A 18 Dipped beam, right
10A 19 Dipped beam, left
10A 20 Headlight levelling, right
10A 21 Headlight levelling, left
5A 22 Sidelight, right
5A 23 Sidelight, left
25A 24 Wiper(s)
25A 24 Headlight washers
30A 25 Heating
30A 25 Air conditioning
30A 26 Heated mirrors
15A 27 Wash/wipe, rear
15A 28 Fuel pump
10A 29 Engine management
20A 30 No information available
15A 31 Automatic transmission
20A 32 Ignition coil
20A 32 Ignition
15A 33 Cigarette lighter
15A 34 Engine management
30A 35 Trailer connector socket
15A 36 Fog light(s)
20A 37 Telephone
20A 37 Radio
15A 38 Luggage compartment light(s)
15A 39 Hazard warning lights
25A 40 Alarm system
25A 41 ABS
25A 41 Or
25A 41 ESP control unit
? 42 Not used
? 43 Not used
30A 44 Heated seat(s)

No position matches. Try one word — “headlight”, “pump”, “window”.

Fuse colours follow the blade-fuse standard (DIN 72581-3 / SAE J1284) and are derived from the rating. The number is what counts — older torpedo fuses use a different colour scheme. Cross-check the lid of the box.

Repair procedures for AUDI

Step-by-step procedures from the workshop database for this make.

Everything for AUDI →

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Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Check the year and the label on the box in your car before pulling a fuse.

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Workshop data on this page last updated 22 Aug 2026.