Electrical functions and components are protected by a number of fuses in order to protect the vehicle’s electrical system from damage by short circuiting or overloading.
Fuse Box Locations
| 1 | Engine compartment |
| 2 | Under the left front seat |
Passenger Fuse Box Diagram (under left front seat)
Fuses under the left front seat provide protection for e.g. electrical outlets, displays and door modules.
| Fuse Number | Description | Fuse AMP | Fuse Type |
 | Infotainment control module (amplifier) | 40 | MCase+ HT |
 | Central Electric Module A: Sensors, radar sensors, power seats | 40 | MCase+ HT |
 | Central Electric Module B: Sensors, radar sensors, power seats | 40 | MCase+ HT |
 | Climate system blower module (front) | 40 | MCase+ HT |
 | Power tailgate | 25 | MCase+ |
 | Power seat, right | 20 | MCase+ |
 | Parking heater | 25 | MCase+ |
 | – | – | MCase+ |
 | Door module, right side, rear | 20 | Micro |
 | Door module, left side, rear | 20 | Micro |
 | Door module, left side, front | 20 | Micro |
 | – | – | Micro |
 | Door module, right side, front | 20 | Micro |
 | Seat heating, rear | 15 | Micro |
 | 48 V battery control module | 5 | Micro |
 | Calculation module | 5 | Micro |
 | – | – | Micro |
 | – | – | Micro |
 | Climate system control module | 7.5 | Micro |
 | Interior movement sensors | 5 | Micro |
 | Instrument panel | 5 | Micro |
 | Center console buttons | 5 | Micro |
 | Steering wheel module | 5 | Micro |
 | Start knob moduleElectronic shifting moduleElectronic parking brake | 5 | Micro |
 | Center display | 5 | Micro |
 | Control module for Internet-connected vehicleVolvo On Call control module | 5 | Micro |
 | Multiband antenna module | 5 | Micro |
 | Relay coils | 5 | Micro |
 | Opening tailgate with foot movement | 5 | Micro |
 | Sensus control moduleTV | 15 | Micro |
 | OBD-II diagnostic port | 10 | Micro |
 | – | – | Micro |
 | Lock motor for rear seat head restraint, left side | 15 | Micro |
 | Lock motor for rear seat head restraint, right side | 15 | Micro |
 | Heated rear window | 30 | MCase+ |
 | Seat belt tensioner, left | 40 | MCase+ HT |
 | Seat belt tensioner, right | 40 | MCase+ HT |
 | Humidity sensor48 V generator and voltage converter | 5 | Micro |
 | Fuel pump control module | 20 | Micro |
 | Coolant pump | 7.5 | Micro |
 | Heated steering wheel | 15 | Micro |
 | Air humidity sensors | 5 | Micro |
 | Headlight washers | 25 | MCase+ |
 | Windshield and tailgate window washers | 25 | MCase+ |
 | – | – | MCase |
 | – | – | MCase |
 | – | – | Micro |
 | – | – | Micro |
 | – | – | Micro |
 | – | – | Micro |
 | Seat belt tensioners | 5 | Micro |
 | Blind Spot Information (BLIS)Exterior reverse signal control module | 5 | Micro |
 | – | – | Micro |
 | – | – | Micro |
 | All Wheel Drive (AWD) control module | 15 | Micro |
 | Exhaust system | 5 | Micro |
 | Park Assist Camera | 5 | Micro |
 | – | – | Micro |
 | Control module for airbags and seat belt tensioners | 5 | Micro |
 | Rear window wiper | 15 | Micro |
 | Roof console for panoramic roof | 20 | Micro |
 | Sun sensor | 5 | Micro |
 | Courtesy lightingRearview mirror auto-dimRain and light sensorControl panels in rear doors and cargo compartment | 7.5 | Micro |
 | – | – | Micro |
 | Driver support functions control module | 5 | Micro |
 | – | – | Micro |
 | Wireless phone chargerUSB port | 5 | Micro |
 | – | – | Micro |
 | – | – | Micro |
Engine Compartment Fuse Box
The fuses in the engine compartment help protect electrical components such as engine and brake functions.
| Fuse Number | Description | Fuse AMP | Fuse Type |
| USB port in tunnel console, rear | 5 | Micro |
| 12 V outlet tunnel console, front | 15 | Micro |
| – | – | Micro |
| 12 V outlet in trunk/cargo compartment | 15 | Micro |
| Engine control module | 20 | Micro |
| Spark plug/ignition coils | 15 | Micro |
| Engine control moduleFuel evaporation valve (EVAP) | 15 | Micro |
| Spoiler damper control moduleCooler damper control moduleEngine oil pump solenoidA/C compressor solenoidFuel leakage control pumpEngine component group (Components related to engine function, including turbo/compressor and cooling/temperature regulation of driveline. Content depends on engine variant.) | 1015 | Micro |
| Heated oxygen sensor group | 15 | Micro |
| Engine control module | 15 | Micro |
| Coolant pump | 20 | Micro |
| Headlight, right | 20 | Micro |
| Headlight, left | 20 | Micro |
| Airbags | 5 | Micro |
| Accelerator pedal sensor | 5 | Micro |
| Fed when ignition is on: engine control module, transmission components, electrical power steering, central electrical module, brake system control module | 5 | Micro |
| Auxiliary electric heaterFirewall module diagnostic port | 5 | Micro |
| – | – | Micro |
| – | – | Micro |
| Internal relay windings | 5 | Micro |
| – | – | Micro |
| Brake pedal sensor | 5 | Micro |
| Calculation module | 5 | Micro |
| Transmission actuator | 5 | Micro |
| Clutch actuator | 25 | Micro | |
| Transmission control module | 15 | Micro |
| Clutch actuator | 25 | Micro | |
| Engine control module | 5 | Micro |
| – | – | Micro |
| – | – | Micro |
| Horn (honk) | 20 | Micro |
| Alarm siren | 5 | Micro |
| Wipers | 30 | MCase+ |
| Brake system control module (valves, parking brake) | 40 | MCase+ HT |
| Brake system control module (ABS pump) | 40 | MCase+ HT |
| – | – | MCase+ HT |
 | Transmission actuatorTransmission control module | 25 | MCase+ |
 | Transmission control module | 30 | MCase+ |
 | Headlights | 30 | MCase+ |
 | Brake assist control module | 30 | MCase+ |
| – | – | MCase+ |
| Towbar control module | 25 | MCase+ |
| Towbar control module | 40 | MCase+ HT |
 | – | – | MCase+ HT |
 | Power driver seat | 20 | MCase+ |
 | – | – | MCase |
 | – | – | Micro |
 | – | – | Micro |
 | – | – | Micro |
 | – | – | Micro |
| – | – | Micro |
| – | – | MCase+ |
| – | – | MCase+ HT |
| – | – | MCase+ HT |
| Control function support battery | 5 | Micro |
| Headlight, left | 20 | Micro |
| Headlight, right | 20 | Micro |
2022 Volvo XC40 Owners Manual
Fuse Changing Precautions
An overloaded fuse needs to be replaced to restore function to the electrical component it protects.
Locate the correct fuse in the fuse diagrams for the different fuse boxes.
Pull out the fuse and examine it from the side to determine if the curved metal wire in the fuse is intact.
If the wire is broken, replace the fuse with a new fuse of the same color and amperage.
Note
Some fuse boxes contain special pliers to make it easier to grip the fuse.
Warning
Never use a foreign object or a fuse with a higher amperage than that specified to replace a fuse. This could cause significant damage to the electrical system and possibly lead to a fire.
Contact an authorized Volvo workshop for assistance replacing fuses not listed in the Owner’s Manual. If fuse replacement is performed incorrectly, significant damage can be caused to the electrical system.