2018 BMW 3 Series G20 fuse box diagram
The 2018 3 Series generation G20 (also known as "G20", "G21", "G28") has 4 different fuse boxes:
Fusebox - Rear diagram
Fusebox - front left diagram
BDC diagram
Fusebox - front right diagram
Fusebox - Rear
| Type | No. | Description | |
|---|---|---|---|
Fuse MINI | 202 | DME – Digital Motor Electronics / Integrated Voltage Module – IVM | |
Fuse MINI 5A | 204 | Sistema de aire acondicionado | |
Fuse MINI 5A | 206 | Fuel pump relay / Fuel pump control, DME – Digital Motor Electronics / Integrated Voltage Module – IVM | |
Fuse MINI 5A | 208 | Driving assistance | |
Fuse MINI 5A | 209 | Driving assistance, Gear Indicator / DSC – Dynamic Stability Control / SMG – Sequential Manual Gearbox, DME – Digital Motor Electronics / Integrated Voltage Module – IVM | |
Fuse MINI 5A | 210 | Steering column function control module | |
Fuse MINI 15A | 212 | Head-Up Display (HUD), Rear seat entertainment | |
Fuse MINI 5A | 214 | Rear seat entertainment | |
Fuse MINI 5A | 215 | Rear seat entertainment | |
Fuse MINI 5A | 216 | Rear seat entertainment | |
Fuse ATO 40A | 217 | Rear seat entertainment | |
Fuse ATO 20A | 218 | Rear seat entertainment | |
Fuse ATO 30A | 220 | Rear seat entertainment | |
Fuse ATO 30A | 225 | Boot lid (tailgate) lock / Soft-close automatic for tailgate | |
Fuse ATO 40A | 226 | Boot lid (tailgate) lock / Soft-close automatic for tailgate | |
Fuse ATO 30A | 227 | DME – Digital Motor Electronics / Integrated Voltage Module – IVM | |
Fuse ATO 30A | 230 | Seatbelts | |
Fuse ATO 30A | 231 | Rear window defroster (defogger) | |
Fuse ATO 40A | 232 | Rear window defroster (defogger) | |
Fuse ATO 20A | 240 | Trailer module | |
Fuse MINI 5A | 244 | Alarm, Fuel pump relay / Fuel pump control, Door module / Automatic soft-close, Hybrid system | |
Fuse MINI 5A | 250 | Interior lights | |
Fuse MINI 5A | 252 | Hybrid system | |
Fuse MINI 5A | 254 | Boot lid (tailgate) lock / Soft-close automatic for tailgate | |
Fuse MINI 5A | 255 | Driving assistance | |
Fuse MINI 7.5A | 256 | Seatbelts | |
Fuse MINI 5A | 257 | Seatbelts | |
Fuse MINI 5A | 258 | Convertible top module / Convertible relay | |
Fuse MINI 15A | 259 | DME – Digital Motor Electronics / Integrated Voltage Module – IVM | |
Fuse MINI 5A | 260 | Electric fan | |
Fuse MINI 5A | 262 | Air conditioner system | |
Fuse MINI 10A | 264 | Boot lid (tailgate) lock / Soft-close automatic for tailgate | |
Fuse ATO 30A | 265 | Heated seats | |
Fuse ATO 40A | 266 | Convertible top module / Convertible relay | |
Fuse ATO 40A | 268 | Convertible top module / Convertible relay | |
Fuse ATO 30A | 269 | Heated seats | |
Fuse ATO 30A | 271 | Fuel pump relay / Fuel pump control, DME – Digital Motor Electronics / Integrated Voltage Module – IVM | |
Fuse ATO 20A | 273 | Front & rear cigarette lighter, 12V socket / Glove box charging socket (12V) | |
Fuse MINI 5A | 278 | Hybrid system | |
Fuse MINI 20A | 281 | Trailer module | |
Fuse MINI 20A | 284 | Trailer module | |
Fuse ATO 20A | 289 | Trailer module | |
Fuse ATO 30A | 291 | Gear Indicator / DSC – Dynamic Stability Control / SMG – Sequential Manual Gearbox | |
Fuse ATO 20A | 296 | Trailer module | |
Fuse puller | FP | Extraction tool for fuse replacement. |
Fusebox - front left
| Type | No. | Description | |
|---|---|---|---|
Fuse ATO 7.5A | 102 | Electronics motor control | |
Fuse MINI 10A | 107 | Hybrid: Pressurized fuel tank control module | |
Fuse ATO 30A | 117 | Hybrid: Automatic transmission transfer case | |
Fuse MINI 5A | 118 | Auxiliary electric heater, front midrange speaker illumination |
BDC
| Type | No. | Description | |
|---|---|---|---|
Fuse MINI 5A | F1 | Steering column transfer case, front center vent, audio control panel, lighting control unit, head unit | |
Fuse MINI 7.5A | F2 | diagnostic socket, electronic ride height control vertical dynamic platform | |
Fuse MINI 7.5A | F3 | Heating/A/C system. Tailgate function module Rain/Light/Sun/Sun/Condensation: sensor | |
Fuse MINI 5A | F4 | Passenger Side Outside Door Handle Control Module Rear Driver Side Outside Door Handle Control Module, Rear Passenger Side Outside Door Handle Control. Module Power Control Module Telematics Module | |
Fuse MINI 20A | F5 | Latching Relay. Unlocking Relay (Doors, Fuel Cap) | |
Fuse MINI 20A | F6 | Driver Door Lock Relay, Lock Relay (Driver Door Lock, Front Passenger Door Lock, Driver Rear Door Lock, Passenger Rear Door Lock, Fuel Filler Door Central, Lock Actuator) |
Fusebox - front right
| Type | No. | Description | |
|---|---|---|---|
Fuse ATO 30A | 20 | Power window actuator driver's door with control electronics | |
Fuse ATO 30A | 21 | Passenger windshield with control electronics | |
Fuse ATO 30A | 22 | Driver's side rear power window with control electronics | |
Fuse ATO 30A | 23 | Passenger side electric rear window with control electronics | |
Fuse ATO 30A | 24 | Left Reversible Electromotive Auto Retractor (Seat Belt) | |
Fuse ATO 20A | 25 | Roof function center | |
Fuse ATO 40A | 26 | Domain Controller Body | |
Fuse ATO 40A | 28 | Dynamic Stability Control (DSC) | |
Fuse ATO 20A | 29 | Electronic transmission control, transfer case | |
Fuse MINI 15A | 30 | Multimedia system | |
Fuse MINI | 32 | Control panel in the center console, parking | |
Fuse MINI 5A | 33 | battery | |
Fuse MINI 5A | 34 | Instrument cluster control unit | |
Fuse MINI 5A | 36 | Root Function Center (Map Light. Interior Light. Ambient Light) | |
Fuse MINI 5A | 37 | Central locking | |
Fuse MINI 5A | 38 | Driver's door outside handle electronic module | |
Fuse MAXI 60A | 39 | Domain Controller Body | |
Fuse MAXI 40A | 40 | fan motor with output stage | |
Fuse ATO 20A | 46 | lighter thermoelectric cup holder | |
Fuse ATO 20A | 47 | Motor management | |
Fuse ATO 20A | 48 | Heated seats | |
Fuse ATO 10A | 49 | Electric steering column adjustment | |
Fuse ATO 30A | 50 | Heated seats | |
Fuse ATO 30A | 51 | Motor management | |
Fuse ATO 20A | 52 | Seat heating electronics | |
Fuse ATO 30A | 53 | Trailer module | |
Fuse ATO 20A | 54 | Autonomous additional heater | |
Fuse ATO 30A | 55 | Seat Module (with Seat Module), Seat Adjust Switch Block (without Seat Module) | |
Fuse ATO 30A | 56 | Seat Module (with Seat Module), Seat Adjust Switch Block (without Seat Module) | |
Fuse ATO 10A | 57 | Electric steering column adjustment | |
Fuse MINI 5A | 59 | Electrochromic interior rear view mirror | |
Fuse MINI 5A | 60 | Driver Assistant | |
Fuse MINI 5A | 61 | Rear center door trim illumination (driver's side). rear door pocket illumination (driver's side). rear door handle illumination (driver's side), driver's side rear door trim illumination (top). rear left speaker illumination additional water pump (Diesel) | |
Fuse MINI 5A | 62 | auxiliary battery, instrument panel speaker light, air freshener, CD drive, ionizer, 48V starter-alternator (B57, B58) | |
Fuse MINI 5A | 63 | Glovebox Light Switch Driver Camera System 48V Power Control Unit (PCU48). 48V Battery | |
Fuse MINI 5A | 64 | Driver's seat back width adjustment valve block driver's lumbar support valve block, seat adjustment switch block (driver's side), footwell rear light (driver's side). driver's seat rear panel illumination USB charging port, front left inflation module seats | |
Fuse MINI 5A | 65 | Front Passenger Backrest Width Adjustment Valve Block Front Passenger Lumbar Support Valve Block, Seat Adjustment Switch Block (Front Passenger Side). Rear Footwell Light (Front Passenger Side). Front Passenger Backrest Rear Panel Light USB charging connector No. 2. front right seat inflation module | |
Fuse MINI 5A | 66 | Upper Center Instrument Panel Light Front Passenger Side Upper Instrument Panel Light, Lower Center Instrument Panel Light. Driver/Passenger Side Lower Instrument Panel Light Front Left/Right Footwell Light | |
Fuse MINI 5A | 67 | Driver's door switch box, Driver's door switch box, Driver's door inner handle illumination Driver's door panel illumination (center). Driver's door pocket illumination Driver's door panel illumination (top). Front left midrange speaker illumination Front left tweeter Lighting | |
Fuse MINI 5A | 68 | Passenger Exterior Mirror, Passenger Door Switch Box, Passenger Door Inner Door Handle Lights. Front Passenger Door Panel Lights (Center). Passenger Door Pocket Lights, Front Passenger Door Panel Lights (Top). Front Right Midrange Loudspeaker Lights, illumination of the front right tweeter | |
Fuse MINI 5A | 69 | Radiator louvers (upper, lower) | |
Fuse MINI 5A | 70 | Rear switchboard electric fan off relay, electric fan | |
Fuse MINI 5A | 71 | surround camera (with surround camera), rear view camera | |
Fuse MINI 7.5A | 72 | Motor control | |
Fuse MINI 5A | 73 | Instrument cluster control unit | |
Fuse MINI 10A | 74 | USB socket | |
Fuse MINI 10A | 75 | Failsafe protection module | |
Fuse MINI 5A | 76 | Driver Assistant |
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Source: BMW 3 Series 2018 Owner's Manual
