(2021 – 2023) Volvo S90 Fuses and Fuse Box Diagram User Guide
This Guide covers the (2021–2023) Volvo S90 fuses and fuse box diagram, including fuse locations, functions, and amperage ratings to assist you identify electrical issues, change fuses safely, and maintain vehicle functionality.
Video: (2021 – 2023) Volvo S90 Fuses
Fuses and central electrical units
All electrical functions and components are protected by a number of fuses in order to protect the car’s electrical system from dam-age by short circuiting or overloading.
WARNING
Never use a foreign object or a fuse with an amperage higher than that specified when replacing a fuse. This could cause significant damage to the electrical system and possibly lead to fire.
If an electrical component or function does not work, it may be because the component’s fuse was temporarily overloaded and failed. If the same fuse fails repeatedly then there is a fault in the circuit. Volvo recommends contacting an authorised Volvo workshop for checking.
Location of central electrical units
The figure is schematic – appearance may vary depending on car model.
Central electrical unit locations in a left-hand drive car. In a right-hand drive car the central electrical units under the glovebox change sides.
- Engine compartment
- Under the glovebox
- Cargo area
Related information
- Replacing a fuse
- Fuses in cargo area
- Fuses in engine compartment
- Fuses under glovebox
Replacing a fuse
All electrical functions and components are protected by a number of fuses in order to protect the car’s electrical system from damage by short circuiting or overloading.
- Look in the fuse diagram to locate the fuse.
- Pull out the fuse and check from the side to see whether the curved wire has blown.
- If this is the case, replace it with a new fuse of the same colour and amperage.
WARNING
Never use a foreign object or a fuse with an amperage higher than that specified when replacing a fuse. This could cause significant damage to the electrical system and possibly lead to fire.
WARNING
Contact an authorised Volvo workshop about the fuses not mentioned in the owner’s manual. If replacing the fuse is not performed correctly, it can cause serious damage to the electrical systems.
Related information
- Fuses and central electrical units
- Fuses in cargo area
- Fuses in engine compartment
- Fuses under glovebox
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.
Positions
On the inside of the cover is a label that shows the location of the fuses.
| Function | Ampere | Type | |
| 1 | – | – | Micro |
| 2 | – | – | Micro |
| 3 | – | – | Micro |
| 4 | Control module for actuator for engagement/change of automatic gearbox gear positions | 5 | Micro |
| 5 | Control module for the high-voltage heater of the internal combustion engine’s coolant | 5 | Micro |
| 6 | Control module for air conditioning; Shut-off valve for heat exchanger; Shut-off valve for coolant that passes through the climate control system | 5 | Micro |
| 7 | Control module for hybrid battery; High voltage converter for combined high-voltage generator/starter motor with volt- age converter 500 V-12 V | 5 | Micro |
| 8 | – | – | Micro |
| 9 | Converter for control of the supply to the rear axle’s electric motor | 10 | Micro |
| 10 | Control module for hybrid battery; High voltage converter for combined high-voltage generator/starter motor with volt- age converter 500 V-12 V | 10 | Micro |
| 11 | Charging unit | 5 | Micro |
| 12 | Shut-off valve for the hybrid battery’s coolant; Coolant pump 1 for hybrid battery | 15 | Micro |
| 13 | Coolant pump for electric drive system | 15 | Micro |
| Function | Ampere | Type | |
| 14 | Cooling fan for hybrid components | 25 | MCaseA |
| 15 | – | – | MCaseA |
| 16 | – | – | MCaseA |
| 17 | – | – | MCaseA |
| 18 | Calculation unit | 5 | Micro |
| 19 | – | – | Micro |
| 20 | – | – | Micro |
| 21 | – | – | Micro |
| 22 | – | – | Micro |
| 23 | USB port in tunnel console, front* | 7,5 | Micro |
| 24 | 12 V socket in tunnel console, front | 15 | Micro |
| 25 | – | – | Micro |
| 26 | 12 V socket in cargo area* | 15 | Micro |
| 27 | – | – | Micro |
| 28 | Left-hand headlamp, LEDB | 15 | Micro |
| 29 | Right-hand headlamp, LEDB | 15 | Micro |
| 30 | – | – | Micro |
| Function | Ampere | Type | |
| 31 | Heated windscreen* left-hand side | Shunt | MCaseA |
| 32 | Heated windscreen* left-hand side | 40 | MCaseA |
| 33 | Headlamp washers* | 25 | MCaseA |
| 34 | Windscreen washers | 25 | MCaseA |
| 35 | – | – | Micro |
| 36 | Horn | 20 | Micro |
| 37 | Siren* | 5 | Micro |
| 38 | Control module for brake system (valves, parking brake) | 30 | MCaseA |
| 39 | Windscreen wipers | 30 | MCaseA |
| 40 | – | – | MCaseA |
| 41 | Heated windscreen* right-hand side | 40 | MCaseA |
| 42 | Parking heater* | 20 | MCaseA |
| 43 | – | – | MCaseA |
| 44 | – | – | MCaseA |
| 45 | Heated windscreen* right-hand side | Shunt | MCaseA |
| 46 | Supplied when the ignition is switched on: Engine control module; Transmission components; Electric steering servo; Central electronic module | 5 | Micro |
| No. | Description | Rating | Type |
|---|---|---|---|
| 47 | Exterior car noise (certain markets) | 5A | Micro |
| 48 | Right-hand headlamp, LEDB | 15A | Micro |
| 49 | Alcohol lock* | 5A | Micro |
| 50 | – | – | Micro |
| 51 | – | – | Micro |
| 52 | Airbags; Passenger weight sensor | 5A | Micro |
| 53 | Left-hand headlamp, LEDB | 15A | Micro |
| 54 | Accelerator pedal sensor | 5A | Micro |
| 55 | Transmission control module; Control module for gear selector | 15A | Micro |
| 56 | Engine Control Module (ECM) | 5A | Micro |
| 57 | – | – | Micro |
| 58 | – | – | Micro |
| 59 | – | – | Micro |
| 60 | – | – | Micro |
| 61 | Engine control module; Actuator; Throttle unit; Valve for turbocharger | 20A | Micro |
| 62 | Solenoid valves, Valve for fuel leakage monitoring; Overpressure coupling | 10A | Micro |
| 63 | Vacuum regulators; Valve for electric bypass; Valve for ventilation | 7.5A | Micro |
| No. | Description | Rating | Type |
|---|---|---|---|
| 64 | Control unit, spoiler damper; Control unit, radiator damper | 5A | Micro |
| 65 | – | – | Micro |
| 66 | Lambda probe, front and rear | 15A | Micro |
| 67 | Solenoid for engine oil pump; Solenoid clutch A/C; Lambda probe, front, centre and rear | 15A | Micro |
| 68 | – | – | Micro |
| 69 | Engine Control Module (ECM) | 20A | Micro |
| 70 | Ignition coils; Spark plugs | 15A | Micro |
| 71 | – | – | MCaseA |
| 72 | – | – | MCaseA |
| 73 | Control module for transmission fluid pump | 30A | MCaseA |
| 74 | – | – | MCaseA |
| 75 | – | – | MCaseA |
| 76 | – | – | MCaseA |
| 77 | – | – | MCaseA |
| 78 | – | – | MCaseA |
A This type of fuse should be replaced by a workshop. An authorised Volvo workshop is recommended. B LED (Light Emitting Diode)
Fuses under glovebox
Fuses under the glovebox protect, amongst other things, electrical sockets, displays and door modules.
A This type of fuse should be replaced by a workshop. An authorised Volvo workshop is recommended. B LED (Light Emitting Diode)
Related information
- Fuses and central electrical units
- Replacing a fuse
Fuses under the glovebox protect, amongst other things, electrical sockets, displays and door modules.
On the inside of the cover there are tweezers that facilitate the procedure for the removal and fitting of fuses.
Positions
On the inside of the cover is a label that shows the location of the fuses.
| No. | Description | Rating | Type |
|---|---|---|---|
| 1 | Intermediate voltage module A | 10A | Micro |
| 2 | – | – | MCaseB |
| 3 | – | – | Micro |
| 4 | Movement detector* | 5A | Micro |
| 5 | – | – | Micro |
| 6 | Driver display | 5A | Micro |
| 7 | Keypad in centre console | 5A | Micro |
| 8 | Sun sensor | 5A | Micro |
| 9 | – | – | Micro |
| 10 | – | – | Micro |
| 11 | Steering wheel module | 5A | Micro |
| 12 | Module for start knob and for parking brake control | 5A | Micro |
| 13 | Steering wheel module for heated steering wheel* | 15A | Micro |
| 14 | – | – | Micro |
| No. | Description | Rating | Type |
|---|---|---|---|
| 15 | – | – | Micro |
| 16 | – | – | Micro |
| 17 | Rear lamp housing control unit | 15A | Micro |
| 18 | Control module for climate control system | 10A | Micro |
| 19 | Steering lock | 7.5A | Micro |
| 20 | Diagnostic socket OBDII | 10A | Micro |
| 21 | Centre display | 5A | Micro |
| 22 | Fan module for climate control system, front | 40A | MCaseB |
| 23 | USB HUB | 5A | Micro |
| 24 | Controls lighting; Interior lighting; Dimming of interior rearview mirror*; Rain and light sensor*; Keypad in tunnel console (rear legroom)*; etc. | 7.5A | Micro |
| 25 | Control module for driver support functions | 5A | Micro |
| 26 | Sunroof* | 20A | Micro |
| 27 | Head-up display* | 5A | Micro |
| 28 | Passenger compartment lighting | 5A | Micro |
| 29 | Wireless charging plate | 5A | Micro |
| 30 | Display in roof console (Seatbelt reminder / Airbag indicator – front passenger seat) | 5A | Micro |
| No. | Function/Component | Ampere | Type |
|---|---|---|---|
| 31 | — | — | Micro |
| 32 | — | — | Micro |
| 33 | — | — | Micro |
| 34 | — | — | Micro |
| 35 | Control module for online car; Control module for Volvo On Call | 5 | Micro |
| 36 | — | — | Micro |
| 37 | Audio control device (amplifier) | 40 | MCaseB |
| 38 | — | — | MCaseB |
| 39 | Module for multi-band antenna | 5 | Micro |
| 40 | Modules for seat comfort (massage) front* | 5 | Micro |
| 41 | Alcohol lock* | 5 | Micro |
| 42 | — | — | Micro |
| 43 | Control module for fuel pump | 15 | Micro |
| 44 | Relay coil for transmission oil pump, Converter medium voltage; Integrated starter motor | 5 | Micro |
| 45 | Opening the boot lid/tailgate with foot motion* | 5 | Micro |
| 46 | Seat heating, driver’s side front | 15 | Micro |
| No. | Function/Component | Ampere | Type |
|---|---|---|---|
| 47 | Seat heating, passenger side front | 15 | Micro |
| 48 | Coolant pump | 7.5 | Micro |
| 49 | — | — | Micro |
| 50 | Power driver’s seat* | 20 | Micro |
| 51 | Control module for suspension (active chassis)* | 20 | Micro |
| 52 | — | — | Micro |
| 53 | Sensus control module | 10 | Micro |
| 54 | — | — | MCaseB |
| 55 | — | — | Micro |
| 56 | Electrically operated front passenger seat* | 20 | Micro |
| 57 | — | — | Micro |
| 58 | TV* (certain markets) | 5 | Micro |
| 59 | Primary fuse for fuses 52, 53, 57 and 58 | 15 | Micro |
A Only applies to cars with 48 V support battery.
B This type of fuse should be replaced by a workshop. An authorised Volvo workshop is recommended.
Fuses in cargo area
Fuses in the cargo area protect, amongst other things, power seats*, airbags and seat-belt tensioners.
The central electrical unit is located on the right-hand side.
On the inside of the cover there are tweezers that facilitate the procedure for the removal and fitting of fuses.
The fuse box in the engine compartment also provides space for several spare fuses.
Positions
On the inside of the cover is a label that shows the location of the fuses.
| Function | Ampere | Type | |
| 1 | Rear window defroster | 30 | MCaseA |
| 2 | Central electronic module | 40 | MCaseA |
| 3 | Compressor for air suspension* | 40 | MCaseA |
| 4 | Lock motor for backrest on rear right-hand side | 15 | MCaseA |
| 5 | – | – | MCaseA |
| 6 | Lock motor for backrest on rear left-hand side | 15 | MCaseA |
| 7 | Door module right-hand side rearB | 20 | MCaseA |
| 8 | Control module for reduction of nitrous oxides (diesel) | 30 | MCaseA |
| 9 | Power operated boot lid* | 25 | MCaseA |
| 10 | Electrically operated front passenger seat* Door module right-hand side front |
20 | MCaseA |
| 11 | Towbar control module* | 40 | MCaseA |
| 12 | Seatbelt pretensioner module, right-hand side | 40 | MCaseA |
| 13 | Internal relay coils | 5 | Micro |
| 14 | Control module for reduction of nitrous oxides (diesel) | 15 | Micro |
| Function | Ampere | Type | |
| 15 | Door module left-hand side rear | 20 | Micro |
| 16 | Alcohol lock*, USB hub/accessory port | 5 | Micro |
| 17 | – | – | Micro |
| 18 | Towbar control module* | 25 | MCaseA |
| Accessory module | 40 | ||
| 19 | Power driver seat*
Door module left-hand side front |
20 | MCaseA |
| 20 | Seatbelt pretensioner module, left-hand side | 40 | MCaseA |
| 21 | Parking camera* | 5 | Micro |
| 22 | Rear light module back-up power supply | 10 | Micro |
| 23 | – | – | Micro |
| 24 | – | – | Micro |
| 25 | Supply when the ignition is switched on | 10 | Micro |
| 26 | – | – | Micro |
| 27 | – | – | Micro |
| 28 | Seat heating left-hand side rear* | 15 | Micro |
| 29 | – | – | Micro |
| Function | Ampere | Type | |
| 30 | Blind Spot Information (BLIS)*: control module, exterior reversing sound | 5 | Micro |
| 31 | – | – | Micro |
| 32 | Seatbelt pretensioner modules, left-hand side | 5 | Micro |
| 33 | Actuator for exhaust gases (petrol, certain engine variants) | 5 | Micro |
| 34 | – | – | Micro |
| 35 | All Wheel Drive (AWD) control module* | 15 | Micro |
| 36 | Seat heating right-hand side rear* | 15 | Micro |
| 37 | – | – | MCaseA |
A This type of fuse should be replaced by a workshop. An authorised Volvo workshop is recommended. B Applicable only to cars with hybrid motors or a 48V support battery.
Useful Links:
View Full PDF: 2021-2023 Volvo S90 Owner’s Manual | Auto User Guide
2024 Volvo S90 Specs, Price, Features, Mileage and Review
(2021 – 2023) Volvo S90 Warning Lights and Indicators User Guide