BMW X4 G02 represents the 2nd generation of the BMW X4 model range, which was produced in 2018, 2019, 2020, 2021, 2022, 2023, 2024,2025. During this time, the model has been restyling. In this publication, you can find a description of the fuses and relays of the BMW X4 G02 with block diagrams, their locations and photos – examples of execution. Let’s highlight the cigarette lighter fuse.
Blocks in the cabin
Passenger side unit
On the right side, under the glove compartment, there is a fuse and relay block.
| № | A | Description |
|---|---|---|
| 20 | 30 | Driver’s door window actuator with control electronics. |
| 21 | 30 | Front passenger door window with control electronics |
| 22 | 30 | Rear electric window on the driver’s side with control electronics. |
| 23 | 30 | Rear power window on the passenger side with electronics that control it |
| 24 | 30 | Left reversible electromotor automatic reel (seat belt) |
| 25 | 20 | Rooftop function center |
| 26 | 20 | Headlights, rain sensor, light sensor |
| 27 | – | |
| 28 | 40 | Dynamic Stability Control (DSC), ABS, parking |
| 29 | 20 | Headlights, rain sensor, light sensor |
| 30 | – | |
| 31 | – | |
| 32 | 5 | Parking brake, Center console control panel |
| 33 | – | |
| 34 | 5 | Instrument cluster control unit |
| 35 | – | |
| 36 | 5 | Roof function center (map reading lamp, interior lighting, ambient lighting, hazard warning light) |
| 37 | – | |
| 38 | – | |
| 39 | 60 | Body Domain Controller |
| 40 | 40 | Fan motor with output stage |
| 41 | – | |
| 46 | 20 | Cigarette lighter, thermo-electric cup holder |
| 47 | 20 | Cigarette lighter |
| 48 | 20 | Seat heating |
| 49 | 10 | Electric steering column adjustment |
| 50 | 30 | Towbar module |
| 51 | 30 | B46, B48, B58, N63: Electronic transmission control, transfer case, 4*4 |
| 52 | 20 | Front passenger seat heating electronics |
| 53 | 30 | Driver’s seat module (with seat module), driver’s seat adjustment switch block (without seat module) |
| 54 | 20 | Autonomous additional heater |
| 55 | 30 | Front passenger seat module (with seat module), front passenger seat position adjustment switch block (without seat module) |
| 56 | 10 | Battery |
| 57 | 10 | Driver’s assistant |
| 59 | 5 | Electric mirrors, rain and light sensor |
| 60 | 5 | Driver’s assistant |
| 61 | 5 | Glove box light switch, interior lighting |
| 62 | 5 | Interior lighting, 48V power control unit |
| 63 | 5 | Air conditioning and ventilation system |
| 64 | 5 | Driver’s seat backrest width adjustment valve block, driver’s lumbar support valve block, seat adjustment switch block (driver’s side), rear footwell light (driver’s side), driver’s seat backrest rear panel light, USB charging port, front left seat inflation module |
| 65 | 5 | Front passenger backrest width adjustment valve block, Front passenger lumbar support valve block, Seat adjustment switch block (front passenger side), Rear footwell lighting (front passenger side), Front passenger seat backrest rear panel lighting, USB charging port No. 2, front Right seat inflation module |
| 66 | 5 | Upper center instrument panel light, upper front passenger side instrument panel light, lower center instrument panel light, lower driver/passenger side instrument panel light, front left/right footwell light |
| 67 | 5 | Driver switch cluster, Driver door seat switch cluster, Driver door interior handle illumination, Driver door trim panel illumination (center), Driver door pocket illumination, Driver door trim panel illumination (top), Front left midrange speaker illumination, Front left tweeter illumination |
| 68 | 5 | Front passenger outside mirror, Passenger door switch assembly, Passenger inside door handle illumination, Front passenger door trim panel illumination (center), Passenger door pocket illumination, Front passenger door trim panel illumination (top), Front right midrange front right tweeter illumination |
| 69 | 5 | Electric fan, DME system, IVM module |
| 70 | 5 | Rear distribution board, electric fan shutdown relay, electric fan |
| 71 | 5 | Interior lighting, Surround view camera (with surround view camera), rear view camera |
| 72 | 5 | Speed shift indicator, DSC, SMG |
| 73 | 5 | Instrument cluster control unit |
| 74 | 5 | Electric fan, battery, 48V |
| 75 | 10 | Collision safety module |
| 76 | 10 | Steering column switch panel |
| Relay | ||
| R1 | relay terminal 30B | |
Fuses 46 and 47 are responsible for the operation of the cigarette lighter.
Fuse block
The fuse compartment is installed in the BDC (Body Domain Controller) electronic control unit, which is mounted on the right pillar under the interior trim on the passenger’s right side.
| № | A | Appointment |
|---|---|---|
| 1 | – | |
| 2 | – | |
| 3 | – | |
| 4 | 20 | Locking relay, unlocking relay (doors, fuel tank flap) |
| 5 | – | |
| 6 | 20 | Driver’s door lock relay, lock relay (driver’s door lock, front passenger door lock, driver’s side rear door lock, rear passenger side door lock, fuel filler flap central locking actuator) |
| 7 | 15 | Signal (beep) |
| 8 | – | |
| 9 | – | |
| 10 | 5 | Steering column switch cluster, front center air vents, audio control panel, lighting control unit, head unit |
| 11 | 7,5 | Diagnostic connector, electronic ride height adjustment system, vertical dynamics platform |
| 12 | 7,5 | Heating/air conditioning system, rear door function module, rain/light/sun/condensation sensor |
| 13 | 5 | Start/stop system |
| 14 | – |
Driver’s side unit
Under the dashboard on the driver’s side is another block with fuses and relays.
The block itself will look something like this.
| № | A | Appointment |
|---|---|---|
| 101 | – | |
| 102 | – | |
| 103 | – | |
| 104 | – | |
| 105 | 7,5 | Electronics and engine management |
| 106 | – | |
| 107 | 10 | Hybrid: Pressurized Fuel Tank Control Module |
| 108 | 15 | Electronics and engine management |
| 109 | – | |
| 110 | 5 | Additional electric heater, front midrange speaker illumination |
| 111 | 5 | Rear distribution board |
| 112 | – | |
| 113 | – | |
| 114 | – | |
| 115 | – | |
| 116 | – | |
| 117 | 30 | Hybrid: Automatic transmission, transfer case |
| 118 | – | |
| 119 | – | |
| 120 | – | |
| 121 | – | |
| 122 | – | |
| 123 | – | |
| 124 | – | |
| 125 | – | |
| 126 | – | |
| 127 | – | |
| 128 | – | |
| 129 | – | |
| 130 | – | |
| 131 | – | |
| Relay | ||
| R1 | ||
| R2 | relay terminal 30B | |
Block in the trunk
Fuse block
In the luggage compartment, on the right side under a protective cover, there is the main fuse and relay block.
Check the fuse assignment with your circuit diagram on the booklet located near the fuse box or other technical documentation.
Individual fuses, relays and other protection units can be installed separately outside the provided units. For example, under the hood is located:
