Jonathan Yarden Jan 31, 2021 · 5 min. read
In this article you will find a description of fuses and relays Audi,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 1988, 1989, 1990, 1991, 1992, 1993, 1994
Passenger Compartment Fuse Box
| No. |
A |
Protected Component |
| 1 | 15 | Front Fog Light, Rear Fog Light |
| 2 | 15 | ’88-’90: Emergency Flasher |
| 10 | ’91-’94: Emergency Flasher | |
| 3 | 25 | ’88-’90: Stop Lamp Switch, Horn |
| 20 | ’91-’94: Stop Lamp Switch, Horn, Auxiliary Radiator Fan (2nd/3rd Speed) (’93-’94) | |
| 4 | 15 | Interior Lights, Cigarette Lighter, Luggage Compartment Light, Trip Computer, Climate Control System, Radio/Speakers, Auxiliary Radiator Fan (1st Speed), Vanity Mirror Light, Clock, Socket |
| 5 | 10 | Oxygen Sensor Heating Element |
| 30 | Cooling Fan (Full Speed) | |
| 6 | 5 | Right Side Marker & Park Lights, Daytime Headlights (Canada), Right Taillights (’93-’94) |
| 7 | 5 | Left Side Marker & Park Lights, Left Taillights (’93-’94) |
| 8 | 10 | Right High Beam Headlight, High Beam indicator |
| 9 | 10 | Left High Beam Headlight |
| 10 | 10 | Right Low Beam Headlight |
| 11 | 10 | Left Low Beam Headlight |
| 12 | 15 | Headlight Washer, Auxiliary Washer, Rear Light Control Unit, Back-Up Lights, ABS Control Unit, Auto Shift Lock, Car Phone (’93-’94), Differential Lock, Cruise Control |
| 13 | 15 | Fuel Pump |
| 14 | 5 | License Plate Light, Center Console Light, Glove Box Light, Engine Compartment Light, Instrument Cluster (’93-’94) |
| 15 | 25 | ’88-’90: Wiper/Washers, Turn Signals, Heated Washer Jets, Air Conditioner |
| 15 | ’91-’94: Wiper/Washers, Turn Signals, Heated Washer Jets | |
| 16 | 30 | ’88-’90: Rear Window Defogger, Heated Mirror |
| 20 | ’91-’94: Rear Window Defogger, Heated Mirror | |
| 17 | 30 | ’88-’90: Air Conditioner, Heater Blower |
| 20 | ’91-’94: Air Conditioner, Heater Blower | |
| 18 | 25 | ’88-’90: Power Seats witch Memory |
| 5 | ’91-’94: Power Seats Memory, Outside Mirror, Central Locking System (’93-’94) | |
| 19 | 10 | Central Locking System, Heated Door Lock, Anti-Theft Alarm System |
| 30 | Central Locking System, Heated Door Lock | |
| 15 | ’91-’94: Central Locking System, Heated Door Lock | |
| 20 | 25 | ’88-’90: Heated Seats |
| 30 | ’88-’90: Cooling Fan (Low Speed), Cooling Fan Relay |
|
| 30 | ’91-’94: Heated Seats | |
| 21 | 20 | ’88-’90: Power Windows |
| 25 | ’91-’94: Power Windows, Rear Cigarette Lighter | |
| 22 | – | – |
| 23 | 10 | Injected Valves, Heated-Wire Air Flow Sensor |
| 24 | 15 | Active Carbon Canister Valve, Idle Stabilization |
| 25 | 30 | Power Seats witch Memory |
| 26 | 5 | Cruise Control |
| 27 | 5 | Motronic Engine Control System |
| 28 | 5 | ’88-’90: Instrument Cluster |
| 15 | ’91-’94: Instrument Cluster | |
| 29 | 10 | Automatic Transmission |
| 30 | 5 | Instrument Cluster, Trip Computer & Function Control Switch, Auto-Check System |
| 31 | – | – |
| Relay | ||
| R1 | Horn | |
| R2 | Foglights | |
| R3 | Automatic Transmission | |
| R4 | – | |
| R5 | Washer/Wiper Intermittent | |
| R6 | – | |
| R7 | Fuel Pump | |
| R8 | – | |
| R9 | Load Reduction | |
| R10 | – | |
| R11 | – | |
| R13 | Radiator Cooling Fan (3rd Stage) | |
| Circuit Breaker | ||
| R12 | Power Window, Power Seats | |
Passenger Compartment Relay Box No.1
| No. |
Relay | |
| R1 | Air Conditioner | |
| R2 | Catalytic Converter | |
| R3 | Radiator Coolant Fan (Low Speed) | |
| R4 | Front Light | |
| R5 | Power Window/Sun Roof | |
| R6 | – | |
| R7 | – | |
| R8 | Radiator Cooling Fan | |
| R9 | ABS Combination | |
Passenger Compartment Relay Box No.2
| No. |
Relay |
| R1 | – |
| R2 | Speaker |
| R3 | Anti-Theft Alarm Light Warning |
| R4 | Driver Heated Seat |
| R5 | Passenger Heated Seat |
| R6 | Shift Lock |
| R7 | Back-Up Light |
| R8 | Auxiliary Wash Pump |
| R9 | Left Rear Heated Seat |
| R10 | Right Rear Heated Seat |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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