SEAT Mii (2012 – 2020) Fuse Box Location & Diagrams
The SEAT Mii (2012–2020) fuse box protects the vehicle’s electrical systems from overloads and short circuits. Knowing the fuse box location, fuse assignments, and diagram makes it easier to identify electrical faults and replace the correct fuse safely when lights, accessories, or other functions stop working.
Fuse Box Location
Passenger Compartment Fuse Box
The fuses are located under the driver-side dash panel behind a cover
Engine Compartment Fuse Box
Fuse Box Diagrams
Passenger Compartment Fuse Box
SEAT Mii (2012 – 2016)
| Type | No. | Description |
| Fuse MINI 5A | 1 | Dash panel insert, Engine control unit, Radiator fan control unit |
| Fuse MINI 7.5A | 1 | Dash panel insert; Engine control unit, Radiator fan control unit |
| Fuse MINI 15A | 2 | Air conditioning system relay, Air conditioning system control unit, Diagnostic connection, High-pressure sender |
| Fuse MINI 7.5A | 3 | Brake light switch, Clutch pedal switch, Camshaft control valve 1 |
| Fuse MINI 7.5A | 4 | Onboard supply control unit, Light switch; Dipped beam/daytime running lights/main beam |
| Fuse MINI 5A | 5 | Onboard supply control unit, Ignition/starter switch, CCS switch |
| Fuse MINI 7.5A | 5 | Onboard supply control unit; Ignition/starter switch; CCS switch |
| Fuse MINI 5A | 6 | Headlight range control regulator, Left headlight range control motor, Right headlight range control motor, Mirror adjustment switch |
| Fuse MINI 7.5A | 6 | Headlight range control regulator, Left headlight range control motor, Right headlight range control motor, Mirror adjustment switch |
| Fuse MINI 10A | 7 | Selector lever |
| Fuse MINI 7.5A | 8 | Automated manual gearbox control unit, Selector lever |
| Fuse MINI 7.5A | 9 | Airbag control unit, Centre switch module 2 in dash panel |
| Fuse MINI 5A | 10 | Parking aid control unit |
| Fuse MINI 7.5A | 10 | Parking aid control unit |
| Fuse MINI 10A | 11 | Right headlight dipped beam bulb |
| Fuse MINI 5A | 12 | Dash panel insert, Rear left fog light bulb |
| Fuse MINI 7.5A | 12 | Dash panel insert, Rear left fog light bulb, Control unit in dash panel insert, Onboard supply control unit |
| Fuse MINI 10A | 13 | Left headlight dipped beam bulb |
| Fuse MINI 15A | 14 | Rear window wiper motor |
| Fuse MINI 15A | 15 | Light switch |
| Fuse MINI 5A | 16 | Terminal 15 voltage supply relay, Power steering control unit |
| Fuse MINI 7.5A | 16 | Terminal 15 voltage supply relay, Power steering control unit |
| Fuse MINI 15A | 17 | Washer pump switch (automatic wash/wipe and headlight washer system) |
| Fuse MINI 7.5A | 18 | Reversing light switch |
| Fuse MINI 15A | 19 | Injector, cylinder 1; Injector, cylinder 2; Injector, cylinder 3 |
| Fuse MINI 5A | 20 | ABS control unit, Emergency braking function sensor unit, Steering angle sender |
| Fuse MINI 7.5A | 20 | ABS control unit, Emergency braking function sensor unit, Steering angle sender |
| Fuse MINI 5A | 21 | Right side light bulb, Right tail light bulb, Number plate light, Onboard supply control unit, Light switch, Side lights |
| Fuse MINI 7.5A | 21 | Right side light bulb, Right tail light bulb, Number plate light, Onboard supply control unit, Light switch, Side lights |
| Fuse MINI 10A | 22 | Left daytime running light bulb, Right daytime running light bulb |
| Fuse MINI 5A | 23 | Left side light bulb, Left tail light bulb |
| Fuse MINI 7.5A | 23 | Left side light bulb, Left tail light bulb |
| Fuse MINI 15A | 24 | Headlight flasher switch |
| Fuse MINI 10A | 25 | Windscreen and rear window washer pump |
| Fuse MINI 5A | 26 | Main relay, Dash panel insert, Steering angle sender |
| Fuse MINI 7.5A | 26 | Main relay, Dash panel insert, Steering angle sender |
| Fuse MINI 7.5A | 27 | Onboard supply control unit, Front interior light, Front passenger reading light, Driver side reading light |
| Fuse MINI 5A | 28 | Diagnostic connection |
| Fuse MINI 7.5A | 28 | Diagnostic connection |
| Fuse MINI 7.5A | 29 | Onboard supply control unit |
| Fuse MINI 5A | 30 | Onboard supply control unit, Heated exterior mirror on driver side, Heated exterior mirror on front passenger side |
| Fuse MINI 7.5A | 30 | Onboard supply control unit, Heated exterior mirror on driver side, Heated exterior mirror on front passenger side |
| Fuse MINI 10A | 31 | Lambda probe; Lambda probe after catalytic converter, Activated charcoal filter solenoid valve 1 |
| Fuse MINI 15A | 32 | Onboard supply control unit, Turn signal/brake light |
| Fuse MINI 10A | 33 | Right headlight main beam bulb |
| Fuse MINI 10A | 34 | Left headlight main beam bulb, Dash panel insert |
| Fuse ATO 15A | 36 | Cigarette lighter |
| Fuse ATO 20A | 36 | Cigarette lighter |
| Fuse ATO 30A | 37 | Air conditioning system control unit, Heater control unit |
| Fuse ATO 15A | 38 | Radio |
| Fuse ATO 30A | 39 | Sliding sunroof adjustment control unit |
| Fuse ATO 15A | 40 | Engine control unit |
| Fuse ATO 25A | 41 | Onboard supply control unit, Central locking |
| Fuse ATO 25A | 42 | Ignition coil 1 with output stage, Ignition coil 2 with output stage, Ignition coil 3 with output stage |
| Fuse ATO 20A | 43 | Heated front seats control unit, Switch module in centre of dash panel; Centre switch module 2 in dash panel |
| Fuse ATO 15A | 44 | Fuel pump relay |
| Fuse ATO 20A | 45 | Light switch |
| Fuse ATO 30A | 46 | Onboard supply control unit, Heated rear window |
| Fuse ATO 25A | 47 | Front right window regulator switch, Operating unit for window regulator in driver door (Only right-hand drive models) |
| Fuse ATO 30A | 47 | Front right window regulator switch, Operating unit for window regulator in driver door (Only right-hand drive models) |
| Fuse ATO 30A | 47 | Front right window regulator switch; Operating unit for window regulator in driver door (Only right-hand drive models), Driver side central locking lock unit (From model November 2014) |
| Fuse ATO 20A | 48 | Onboard supply control unit, Treble horn, Bass horn |
| Fuse ATO 20A | 49 | Onboard supply control unit, Wiper motor control unit |
| Fuse ATO 30A | 49 | Onboard supply control unit, Wiper motor control unit |
| Fuse ATO 15A | 50 | Left fog light bulb, Right fog light bulb |
| Fuse ATO 20A | 50 | Left fog light bulb, Right fog light bulb, Onboard supply control unit [Only models with start/stop system] |
| Fuse ATO 25A | 51 | From November 2014: Front left window regulator switch cooperating unit for window regulator in driver door 2012 & 2013: Driver Side Central Locking Lock [Only right-hand drive models] |
| Fuse ATO 30A | 51 | Driver side central locking lock unit [Only right-hand drive models] 2013: From May 2013: Driver side central locking lock unit [Only right-hand drive models] |
SEAT Mii (2017 – 2020)
Fuse Box (2017-2020)
| Type | No. | Description |
| Fuse MINI 10A | 1 | 2017-2019: Diagnostic socket / Air conditioning pressure switch / Air conditioning control unit / Air conditioning compressor Air conditioning control unit / Air conditioning relay / High pressure sensor / Diagnostic connector |
| Fuse MINI 7.5A | 2 | 2017-2019: Parking distance control unit / Electric exterior mirror adjustment switch / Right exterior mirror tilt-down function / Multifunction steering wheel Headlight front left / Left headlight range control actuator motor / Headlight front right / Right headlight range control actuator motor / Parking assistance system control unit / Symposer control unit / Exterior mirror position adjuster / Headlight range control regulator / Steering column switch unit [Optional] / Switch module 2 front panel, center / Right seat heating button / Front Panel Switch Module, Center / Left seat heating button |
| Fuse MINI 7.5A | 3 | 2017-2019: Combined instrument / Engine control unit / Heating control unit / Automated transmission control lever and unit / Electromechanical steering control unit / Ignition relay / Cell phone USB charger (Universal Dock Station) Power supply relay terminal 15 / Power steering control unit / Radiator fan control unit / Electronically controlled manual transmission control unit / Selector / Instrument cluster / Steering column switch unit / Engine control unit / On-board power supply control unit |
| Fuse MINI 7.5A | 4 | 2017-2019: Airbag control unit Airbag control unit / Front passenger airbag off indicator lamp |
| Fuse MINI 7.5A | 5 | 2017-2019: Reverse light switch / Automated transmission Reversing light switch [Optional] |
| Fuse MINI 10A | 6 | 2017-2019: Windshield washer and rear window washer Windscreen and rear window washer pump |
| Fuse MINI 7.5A | 9 | Front camera for driver assistance systems |
| Fuse MINI 7.5A | 10
11 12 13 14 | 2017-2019: Diagnostic socket / Right exterior mirror tilt-down function On-board power supply control unit [Optional] / Heated exterior rear view mirrors / Diagnostic socket [Optional] / Rear view camera [Optional] / Rain and light sensor [Optional] / Climatronic control unit [Optional]
2017-2019: Daytime running light (version with BFM control unit) 2017-2019: Fog light [version with BFM control unit] 2017-2019: Left position light [version with BFM control unit] 2017-2019: Right position light [version with BFM control unit] |
| Fuse MINI 15A | 15 | 2017-2019: Position lights / Interior control lighting / 12 Volt power socket lighting / License plate light [version with BFM control unit] / Ambient lighting [BFM] Head unit [Optional][only for cars with the head unit Touch] |
| Fuse MINI 15A | 17 18 | Rear window wiper motor 2017-2019: Alarm Horn |
| Fuse ATO 25A | 19 | On-board power supply control unit / Central locking, trunk lid |
| Fuse ATO 30A | 20 | 2017-2019: Rear window defroster (BCM/BFM control unit) On-board power supply control unit / Rear window heating element |
| Fuse ATO 20A | 21 | 2017-2019: Fog light [version with BCM control unit] [only for vehicles without start-stop system] On-board power supply control unit / Reversing lights, static adaptive lighting, fog lights |
| Fuse ATO 7.5A | 21 | [only for vehicles without fog lights] |
| Fuse ATO 25A | 22 | 2017-2019: Horn On-board power supply control unit / High tone signal |
| Fuse ATO 30A | 23 | 2017-2019: Interior surveillance sensor (ultrasound) [only for vehicles with start-stop system] Voltage converter [only for vehicles with start-stop system] |
| Fuse ATO 15A | 23 | [only for vehicles without start-stop system] On-board power supply control unit [only for vehicles without start-stop system] |
| Fuse ATO 7.5A | 24 | Steering column switch unit 2017-2019: Light switch / High beam flash |
| Fuse ATO 30A | 25 | 2017-2019: Windshield defroster (BCM/BFM control unit) On-board power supply control unit / Front wiper motor |
| Fuse MINI 15A | 26 | 2017-2019: Radio / Cell phone USB charger (Universal Dock Station) Head unit [only for vehicles without start-stop system][only for cars with the head unit Touch] / On-board power supply control unit [only for vehicles with start-stop system] / Low beam |
| Fuse MINI 15A | 27 | 2017-2019: Right side lighting (low beam and high beam) / Turn indicators / Brake light / License plate light / Interior control lighting [version with BCM control unit] / Daytime running light [version with BCM control unit] On-board power supply control unit / Direction indicators |
| Fuse MINI 7.5A | 28 | 2017-2019: Automated transmission control unit Selector From September 2020: Spare |
| Fuse MINI 15A | 29 | Fuel pump relay |
| Fuse MINI 7.5A | 30 | Main relay / Instrument cluster / Engine control unit [Optional] 2017-2019: Combined instrument / Engine control unit / Engine system relay / Rain sensor and twilight sensor |
| Fuse MINI 15A | 31 | 2017-2019: Turn indicators / Brake lights [version with BFM control unit] On-board power supply control unit / Low beam |
| Fuse MINI 7.5A | 32 | 2017-2019: Electronic control unit (BCM/BFM control unit) On-board power supply control unit / Cl. 30 |
| Fuse MINI 10A | 33 | Rotary light switch |
| Fuse MINI 7.5A | 34 | On-board power supply control unit / Interior light 2017-2019: Interior lighting / Position lights [version with BCM control unit]. Interior lighting [version with BFM control unit] |
| Fuse MINI 7.5A | 35
36 | 2017-2019: Right low beam [version with BFM control unit] [only for vehicles with start-stop system] Instrument cluster [only for vehicles with start-stop system]
2017-2019: Left low beam [version with BFM control unit] |
| Fuse MINI 7.5A | 37 | ABS control unit |
| Fuse MINI 7.5A | 38 | Front panel switch module, centre [Optional] / Start-stop mode button / Voltage converter [Optional] / Starter relay 1 [Optional] / Starter relay 2 [Optional] |
| Fuse MINI 15A | 39 | 2017-2019: Turn indicators / Windshield wiper control unit Steering column switch unit |
| Fuse MINI 10A | 40 | 2017-2019: Activated carbon filter valve / Lambda sensor / Variable camshaft / Hot start [except TSI engine] / Radiator turbine – power supply [TSI engine] / Oil pressure control valve [TSI engine] / Ethanol sensor [TSI engine Lambda probe 1 before neutralizer / Lambda probe heating element / Lambda probe / Lambda probe 1 after neutralizer / Lambda probe heating element 1 after catalytic converter / Lambda probe after neutralizer / Gas shut-off valve relay [Optional] / Solenoid valve 1 adsorber / Solenoid valve 2 adsorber [Optional] / Valve 1 of the intake valve timing control [Optional] / Valve 1 of the exhaust valve timing adjuster [Optional] / High pressure valve for gas operation [Optional] / Oil pressure regulating valve [Optional] / Valve 1 of the intake valve timing adjuster [Optional] / Radiator Fan |
| Fuse MINI 7.5A | 41 | 2017-2019: Brake pedal sensor / Clutch pedal sensor / Radiator turbine relay [MPI] Brake light switch / Clutch pedal switch / Clutch pedal position sensor / Valve 1 of the intake valve timing control |
| Fuse MINI 15A | 42 | 2017-2019: Engine control unit / Air conditioning compressor relay Engine control unit |
| Fuse ATO 10A | 43 | 2017-2019: Fuel pump [TSI engine] / Water pump [TSI engine] / Fuel metering valve [TSI engine] Air conditioning relay [Optional] / Brake system vacuum pump [Optional] / Brake booster pressure sensor |
| Fuse ATO 15A | 44 | [Optional] Injector cylinder 1 / Injector cylinder 2 / Injector cylinder 3 / Gas supply valve 1 [Optional] / Gas supply valve 2 [Optional] / Gas supply valve 3 [Optional] / Fuel pressure regulator [Optional] / Charge air cooling pump [Optional] / Fuel pump control unit [Optional] |
| Fuse ATO 20A | 44 | 2017-2019: Fuel injector valves [Optional] |
| Fuse ATO 20A | 45 | 2017-2019: Ignition coils Ignition coil 1 with output stage / Ignition coil 2 with output stage / Ignition coil 3 with output stage |
| Fuse ATO 20A | 46 | 2017-2019: 12 Volt power socket Cigarette lighter |
| Fuse ATO 30A | 47 | 2017-2019: Interior ventilation Heater control unit [Optional] / Air conditioning control unit [Optional] |
| Fuse ATO 15A | 48 | Control unit for heated front seats |
| Fuse ATO 30A | 49 | Driver’s door window lift control panel / Front right window lift switch 2017-2019: Power window actuator |
| Fuse ATO 10A | 50 | 2017-2019: Light switch Rotary light switch |
| Fuse ATO 30A | 51 | 2017-2019: Power window actuator Driver’s door window lift control panel / Front right window lift switch |
Relay Box (2020)
| Type | No. | Description |
| Relay | R1 | Power supply relay 1 terminal 75 |
| Relay | R2 | Power supply relay, terminal 15 |
| Relay | R3 | Relay 2 starters [Only for vehicles with a start-stop system] |
| Relay | R4 | Main relay |
| Relay | R6 | Starter Motor Relay 1 [Only for vehicles with a start-stop system] |
| Relay | R7 | Fuel Pump Relay (7/A socket) [Only for cars with a petrol engine] |
| Relay | R10 | Air conditioning relay |
| Relay | R11 | Starter Lock Relay (11/A socket) |
| Relay | R11 | Gas shut-off valve relays (11/B socket) [Only for vehicles with a natural gas (CNG) engine] |
Engine Compartment Fuse Box
SEAT Mii (2014 – 2019)
| Type | No. | Description |
| Fuse MIDI 50A | 1 | Automated manual gearbox control unit J514 [Depends on equipment] 2017-2019: Automated Transmission |
| Fuse MIDI 40A | 2 | Radiator fan control unit J293 2017-2019: Radiator Fan – Vehicles with Air Conditioning |
| Fuse MIDI 40A | 3 | ABS control unit J104 2017-2019: ABS |
| Fuse MIDI 40A | 4 | Power steering control unit J500 |
| Fuse MIDI 50A | 4 | Power steering control unit J500 2017-2019: Electromechanical Steering |
| Fuse MIDI 110A | 5 | Fuse holder C -SC Main relay J271 Terminal 75 voltage supply relay 1 J680 2017-2019: Internal Compartment Power Supply |
| Fuse 110A | 6 | Amplifier R12 2017-2019: Spare |
| Fuse MIDI 150A | 7 | Alternator C |
| Fuse MIDI 175A | 7 | [Only models with start/stop system] Alternator C |
| Fuse ATO 30A | 8 | Fuse holder C -SCIgnition/starter switch D 2017-2019: Ignition Switch |
| Fuse ATO 5A | 9 | Onboard supply control unit J519 2017-2019: Reference Power Supply for BFM / BCM Control Unit |
| Fuse ATO 7.5A | 9 | Onboard supply control unit 519 |
| Fuse ATO 10A | 10 | ABS control unit J104 |
| Fuse ATO 5A | 11 | Radiator fan control unit J293Terminal S ignition/starter switch D 2017-2019: Ignition Switch |
| Fuse ATO 7.5A | 11 | Radiator fan control unit J293Terminal S ignition/starter switch D |
| Fuse ATO 30A | 12 | Radiator fan thermal switch F18 Radiator fan control unit J293 2017-2019: Radiator Fan – Vehicles without Air Conditioning |
| Fuse ATO 25A | 13 | ABS control unit J104 |
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