Fuses - in engine compartment
Fuses in the engine compartment protect engine and brake functions, amongst other things.
On the inside of the cover there are tweezers that facilitate the procedure for the removal and fitting of fuses.
The fuse box also provides space for several spare fuses.
Replacing fuses
The fuses can be accessed following the removal of the cover fitted on the starter battery and the cover for the electrical distribution unit.
Removing the covers
Fold out the locking catches that are fitted on the sides of the cover on the starter battery.
Lift the cover straight up.
Fold out the locking catch that is fitted on the side of the electrical distribution unit.
Rotate the cover upward until the lock lugs (1) are released.
Fold the cover toward the engine to access the fuses.
Refitting the covers
Reinstall the parts in reverse order.
Positions
The label on the inside of the cover shows the positions of the fuses.
- Fuses 7-18 and 46 are of the "JCASE" type and should be replaced by a workshop1.
- Fuses 19-45 and 47-48 are of "Mini Fuse" type.
| Function | A2 | |
|---|---|---|
 | ABS pump | 40 |
 | ABS valves | 30 |
 | Headlamp washers* | 20 |
 | Ventilation fan | 40 |
 | - | - |
 | Primary fuse for fuses 32-36 | 30 |
 | - | - |
 | Heated windscreen, right-hand side* | 40 |
 | - | - |
 | Heated windscreen, left-hand side* | 40 |
 | Parking heater* | 20 |
 | Windscreen wipers | 20 |
 | Central electronic module, reference voltage, support battery | 5 |
 | Horn | 15 |
 | Brake light | 5 |
 | - | - |
 | Headlamp control | 5 |
 | Internal relay coils | 5 |
 | 12 V socket, tunnel console front | 15 |
 | Transmission control module | 15 |
 | - | - |
 | 12 V socket, tunnel console rear | 15 |
 | - | - |
 | Engine Control Module (ECM) | 5 |
 | Power seat, right* | 20 |
 | Lambda-sonds; Relay coil in relay for cooling fan | 15 |
 | Vacuum regulators; Valves; Control module, radiator roller cover; Control module, spoiler roller cover (diesel); Compressor A/C; Solenoid for engine oil pump; Cooling valve for climate control system (diesel); Glow control module (diesel); Relay coils in relays for Start/Stop functions | 10 |
 | EGR valve (diesel); EVAP valve (petrol); Engine control module; Thermostat for engine cooling system (petrol); Cooling pump for EGR (diesel) | 15 |
 | Ignition coils (petrol) | 15 |
| Diesel filter heater (diesel) | 25 | |
 | Engine Control Module (ECM) | 15 |
 | ABS | 5 |
 | Engine control module; Transmission control module; Airbags | 7.5 |
 | Headlamp levelling* | 10 |
 | Electric control servo | 5 |
 | Central electronic module | 15 |
 | - | - |
 | - | - |
 | Collision warning system | 5 |
 | Accelerator pedal sensor | 5 |
 | - | - |
 | - | - |
 | Coolant pump (when no parking heater is available) | 10 |