Jonathan Yarden Oct 22, 2021 · 5 min. read
In this article you will find a description of fuses and relays Volvo,
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.
Fuse box
The fuses are located in three different places in the car:
Fuses in the main fuse box (A) protect the entire electrical supply system.
Fuses in the relay/fuse box (B) protect the electrical functions and components in the engine compartment.
The fuse box in the passenger compartment (C) contains the fuses which protect the various functions in the interior of the car.
Main fuse box (Box A)
| Position | Function | Ampere rating [A] |
| 1 | Heated rear window, Central locking system, Power Supply Relay “B” Ignition switch | 50 |
| 2 | Audio, power seats, Hazard warning flashers, Compartment Lights, Power Antenna, Trailer Power | 50 |
| 3 | Power Supply Relay “A” | 50 |
| 4 | Fuel System Relay, Ignition System Relay | 50 |
| 5 | ABS-unit | 50 |
| 6 | Air pump, Starter Solenoid, Horn | 50 |
| 7 | Electric Cooling Fan | 50 |
| 8 | Pos./parking Light Relay, Headlight Relay, Fog light relay | 50 |
Relay/fuse box (Box B)
| Position | Function | Ampere rating [A] |
| 1 | Engine control module, Automatic transmission control module | 5 |
| 2 | AC relay | 5 |
| 3 | Relay, air pump, Heated oxygen sensor | 15 |
| 4 | Fuel pump | 15 |
| 5 | Fuel injection, Mass air flow (MAF) sensor, Idle air control system, Engine control module | 15 |
| 6 | Automatic transmission control module | 15 |
| 7 | Ignition coil | 25 |
| 8 | Foglights | 25 |
| 9 | Spare | — |
| 10 | Positioning/parking lights,left | 15 |
| 11 | Positioning/parking lights, right | 15 |
| 12 | Left high beam | 15 |
| 13 | Right high beam, Instrument panel | 15 |
| 14 | Left low beam | 15 |
| 15 | Right low beam | 15 |
| 16 | A/C compressor | 15 |
| 17 | Horn | 15 |
| 18 | Accessories | — |
Fuse box in the passenger compartment (Box C)
| Position | Function | Ampere rating [A] |
| 1 | Heated rear window | 25 |
| 2 | Central locking | 20 |
| 3 | Brake light, Light switch | 15 |
| 4 | Ignition switch, SRS | 10 |
| 5 | Spare | — |
| 6 | Windshield wiper/washer, Headlight wiper, horn relay | 25 |
| 7 | Climate unit | 20 |
| 8 | Power seats, Power side door mirrors, Tailgate wiper/washer (wagons), Instrument lighting, Ambient temp. sensor | 15 |
| 9 | Audio system | 15 |
| 10 | Cigarette lighter | 15 |
| 11 | Interior lighting, Transmission mode selector | 5 |
| 12 | ABS | 5 |
| 13 | Clock, Interior/glove compartment lighting, Door open warning lights, Cargo space lighting, Vanity mirror | 10 |
| 14 | Alarm, Horn | 10 |
| 15 | Power antenna, Headlight flasher, Trailer | 20 |
| 16 | Accessories | 20 |
| 17 | Hazard warning flasher, Direction indicator, Alarm hazard indication | 20 |
| 18 | Audio/amplifier, CD changer | 15 |
| 19 | Backup lights, Turn indicators, Cruise control | 15 |
| 20 | Light switch, High/low beam relay | 15 |
| 21 | Seat belt reminder, Timer-electrically heated rear window | 5 |
| 22 | Heated driver’s seat | 15 |
| 23 | Heated passenger’s seat | 15 |
| 24 | Rear foglights | 5 |
| 25 | Power seats* | 30 |
| 26 | Power windows, Power sunroof* | 30 |
| * Automatic circuit breakers | ||
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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