SEAT Leon (2013 – 2020) Fuse Box Location & Diagrams
The SEAT Leon (2013–2020) features multiple fuse boxes that protect its electrical circuits and vehicle systems. Knowing their locations and fuse assignments helps identify electrical faults, replace blown fuses, and maintain essential components such as lighting, power windows, climate control, and infotainment systems.
Fuse Box Location
Passenger Compartment Fuse Box
Engine Compartment Fuse Box
Fuse Box Diagram
Passenger Compartment Fuse Box
SEAT Leon (2013-2015)
| Fuse Type | Fuse No. | Amp Rating | Description |
|---|---|---|---|
| MINI | F4 | 10A (2013) / 3A (2015) | 2013: Onboard supply control unit; Theft alarm system. 2015: Taxi |
| MINI | F5 | 5A | 2013: Data bus diagnostic interface. 2014: Data bus diagnostic interface. 2015: Gateway |
| MINI | F6 | 5A | 2013-2014: Interior monitoring sensor; Vehicle inclination sender. 2015: Automatic gear lever |
| MINI | F7 | 10A | 2013-2014: Heated rear window relay; Heater control unit; Climatronic control unit; Air conditioning system control unit. 2015: Climate control/heating control panel; Rear window defroster |
| MINI | F8 | 10A | 2013-2014: Light switch; Rain sensor; Air humidity sensor; Diagnosis connection. 2015: Diagnostics; Handbrake switch; Light switch; Reverse light; Interior lighting |
| MINI | F9 | 1A (2014) / 5A (2015) | 2014: Steering column electronics control unit. 2015: Steering column |
| MINI | F10 | 10A (2013-2014) / 5A (2015) | 2013-2014: Front display and information control panel display unit. 2015: Radio display |
| ATO | F12 | 20A | 2013-2015: Radio and information electronics control unit |
| ATO | F13 | 15A | 2014: Electronically controlled damping control unit. 2015: Driving mode |
| ATO | F14 | 40A (2013) / 30A (2014-2015) | 2013-2014: Fresh air blower control unit. 2015: Climate control fan |
| MINI | F17 | 5A | 2013-2015: Instrument panel / Dash panel insert control unit |
| MINI | F18 | 7.5A (2015) | 2015: Rear camera |
| MINI | F21 | 15A | 2014-2015: All-wheel drive / 4×4 Haldex control unit |
| ATO | F22 | 15A | 2014: Trailer detector control unit (from July 2014). 2015: Trailer |
| FMX/JCase | F23 | 40A | 2013-2015: Right headlight / Right lights |
| ATO | F24 | 30A | 2013-2015: Sliding sunroof adjustment control unit / Sunroof |
| ATO | F25 | 30A | 2013-2014: Driver door control unit; Rear driver window regulator motor. 2015: Left door |
| ATO | F26 | 20A | 2013-2015: Front heated seats / Seat heater |
| ATO | F27 | 20A | 2014: Trailer voltage supply relay; Trailer socket (up to June 2014). 2015: No data |
| ATO | F28 | 20A (2013-2014) / 25A (2015) | 2013-2014: Trailer detector control unit. 2015: Trailer |
| FMX/JCase | F31 | 40A | 2013-2015: Left headlight / Left lights |
| MINI | F32 | 7.5A | 2013-2015: Park assist / Parking aid control unit |
| MINI | F33 | 5A | 2013-2015: Airbag control unit |
| MINI | F34 | 7.5A | 2013-2014: Light switch; Fog lights; Interior mirror; Sensors. 2015: Reverse switch; Climate sensor; Electrochromic mirror |
| MINI | F35 | 10A | 2013-2015: Diagnostics; Headlight control unit; Headlight adjustment system |
| MINI | F36 | 10A | 2013-2015: Lane departure warning / Front camera / Radar |
| ATO | F38 | 20A (2013-2014) / 25A (2015) | 2013-2014: Trailer detector control unit. 2015: Trailer |
| ATO | F39 | 30A | 2013-2014: Passenger door control unit; Rear passenger window regulator motor. 2015: Right door |
| ATO | F40 | 20A | 2013-2015: 12V socket / Cigarette lighter / Power outlet |
| ATO | F41 | 1A | 2013-2014: Steering column electronics control unit. 2015: No data |
| ATO | F42 | 40A | 2013-2015: Central locking |
| FMX/JCase | F43 | 30A | 2013-2014: Onboard supply control unit. 2015: Interior lights |
| ATO | F44 | 15A | 2013-2015: Trailer detector control unit / Trailer |
| Circuit Breaker ATO | F45 | — | 2014: Driver seat adjustment operating unit (from July 2014). 2015: Driver’s electric seat |
| ATO | F47 | 15A | 2013-2015: Rear window wiper motor |
| MINI | F49 | 5A | 2013-2015: Clutch position sender; Starter motor relay |
| ATO | F53 | 30A | 2013-2015: Heated rear window system |
SEAT Leon (2016-2020)
| Fuse No. | Consumer / Protected Component | Amps |
|---|---|---|
| 1 | SCR, AdBlue (2019–2020) | 20 A |
| 4 | Taxis (2016) / Alarm horn (2019–2020) | 3 A / 7.5 A |
| 5 | Gateway (2016) / Gateway (2017–2020, updated rating) | 5 A / 7.5 A |
| 6 | Automatic gearbox lever (2016) / Automatic gearbox lever (2017–2020, updated rating) | 5 A / 7.5 A |
| 7 | Air conditioning and heating control panel, rear window heating (2016–2019) / Air conditioning and heating control panel, rear window heating, A/C compressor (2020) | 10 A |
| 8 | Diagnosis, handbrake switch, light switch, reverse light, interior lighting (2016) / Diagnosis, handbrake switch, light switch, reverse light, interior lighting, illuminated door sill (2017–2020) | 10 A / 7.5 A |
| 9 | Steering column (2016) / Steering column (2017–2020, updated rating) | 5 A / 7.5 A |
| 10 | Radio display (2016–2017) / Radio display (2018–2020) | 5 A / 7.5 A |
| 11 | Left lights (2018–2020) | 40 A |
| 12 | Radio (2016–2020) | 20 A |
| 13 | Driving mode (2016) / Taxis (2019–2020) | 15 A / 5 A |
| 14 | Air conditioner fan (2016) / Air conditioner fan (2017–2020) | 30 A / 40 A |
| 15 | KESSY (2017–2020) | 10 A |
| 16 | Connectivity Box (2017–2020) | 7.5 A |
| 17 | Instrument panel (2016) / Instrument panel, OCU (2017–2020) | 5 A / 7.5 A |
| 18 | Rear camera (2016–2020) | 7.5 A |
| 19 | KESSY (2017–2020) | 7.5 A |
| 20 | SCR, engine relay, 1.5 (2019–2020) | 10/15 A |
| 21 | 4×4 Haldex Control Unit (2016–2020) | 15 A |
| 22 | Trailer (2016–2020) | 15 A |
| 23 | Right lights (2016–2017) / Sunroof (2018–2020) | 40 A / 20–30 A |
| 24 | Electric sunroof (2016–2017) / Right lights (2018–2020) | 30 A / 40 A |
| 25 | Left door (2016–2020) | 30 A |
| 26 | Heated seats (2016–2020) | 20 A |
| 27 | Interior light (2018–2020) | 30 A |
| 28 | Trailer (2016–2020) | 25 A |
| 32 | Parking aid control unit, front camera, radar (2017–2020) | 7.5 A |
| 33 | Airbag (2016) / Airbag (2017–2020, updated rating) | 5 A / 7.5 A |
| 34 | Reverse switch, climate sensor, electrochromic mirror (2016–2020) | 7.5 A |
| 35 | Diagnosis, headlight control unit, headlight adjuster (2016) / Same function (2017–2020, updated rating) | 10 A / 7.5 A |
| 36 | Front camera, radar (2016) / Right LED headlight (2017–2020) | 10 A / 7.5 A |
| 37 | Right/Left LED headlights (2017–2020) | 10 A / 7.5 A |
| 38 | Trailer (2016–2020) | 25 A |
| 39 | Right door (2016–2020) | 30 A |
| 40 | 12V socket (2016–2020) | 20 A |
| 41 | Central locking (2018–2020) | 40 A |
| 42 | Central locking (2016–2017) / Beats Audio CAN and MOST (2019–2020) | 40 A / 30 A |
| 43 | Interior light (2016) / SEAT Sound, Beats Sound CAN and MOST (2018) / Beats Audio CAN and MOST (2019–2020) | 30 A |
| 44 | Trailer (2016–2020) | 15 A |
| 45 | Electric driver’s seat (2016–2020) | 15 A |
| 47 | Rear window wiper (2016–2020) | 15 A |
| 49 | Starter motor, clutch sensor (2016–2018) / Starter motor, clutch sensor (2019–2020) | 5 A / 7.5 A |
| 52 | Driving mode (2018–2020) | 15 A |
| 53 | Heated rear window (2016–2020) | 30 A |
Engine Compartment Fuse Box
SEAT Leon (2013)
| Fuse Type | Fuse No. | Amp Rating | Description |
|---|---|---|---|
| FMX/JCase | F1 | 40A | From June 2013: ABS control unit (According to equipment) |
| FMX/JCase | F2 | 40A | Up to May 2013: ABS control unit. From June 2013: ABS control unit |
| ATO | F3 | 15A / 30A | Up to May 2013: 15A Engine control unit (Petrol engine models); 30A Engine control unit (Diesel engine models). From June 2013: 30A Engine control unit (Diesel engine models only) |
| ATO | F4 | 10A / 5A | Up to May 2013: Oil level and oil temperature sender; Radiator fan control unit; Activated charcoal filter solenoid valve; Camshaft control valves; Oil pressure warning lamp (Petrol models); Diesel models include low/high heat output relay and charge pressure control solenoid valve. From June 2013: Oil level and oil temperature sender; Radiator fan control unit; Turbocharger air recirculation valve; Intake manifold flap valve; Oil pressure control valve; Piston cooling jet control valve; Activated charcoal filter solenoid valve; Camshaft control valves; Gas mode valve (CPWA models). |
| ATO | F5 | 10A / 7.5A | Up to May 2013: Fuel pressure regulating valve; Fuel metering valve; Camshaft adjustment actuators; Engine component current supply relay; Injector supply (CJSA models). From June 2013: Gas shut-off valve relay; Gas injection valves 1–4 (CPWA models). |
| ATO | F6 | 5A | Up to May 2013: Brake pedal position sender. From June 2013: Brake pedal position sender |
| ATO | F7 | 5A / 10A | Up to May 2013: Coolant shut-off valve (CJSA models); Fuel pressure regulating valve; Charge air cooling pump; Oil pressure warning lamp; Coolant valve; Heating assistant pump. From June 2013: Fuel pressure regulating valve; Charge air cooling pump; Oil pressure warning lamp; Coolant valve for cylinder head; Heating assistant pump; Additional cooling system components. |
| ATO | F8 | 15A | Up to May 2013: Lambda probe heater; Lambda probe heater after catalytic converter (Petrol and Diesel models). From June 2013: Lambda probe heater; Lambda probe heater after catalytic converter (Petrol and Diesel EU6+); Lambda probe heater (Diesel EU5+) |
| ATO | F9 | 20A / 10A / 5A | Up to May 2013: Ignition coils (Petrol models); Activated charcoal filter valve; Camshaft control valve (CJSA); Air mass meter and glow control (Diesel). From June 2013: Air mass meter; Automatic glow period control unit; Intake manifold preheating heater element (Diesel models). |
| ATO | F10 | 15A / 20A | Up to May 2013: Fuel pump control unit (Petrol 15A; Diesel 20A). From June 2013: Fuel pump control unit (Diesel models only) |
| FMX/JCase | F11 | 40A | Auxiliary heater element |
| FMX/JCase | F12 | 40A | Auxiliary heater element |
| ATO | F13 | 30A / 15A | Up to May 2013: Mechatronic unit for dual clutch gearbox 0CW (30A); 0D9 gearbox (15A). From June 2013: Mechatronic unit for dual clutch gearbox 0D9 (15A). |
| ATO | F15 | 15A | Treble tone horn; Bass tone horn; Horn relay |
| ATO | F16 | 20A / 5A | Up to May 2013: Ignition coils (CJSA models). From June 2013: Oil level sender; Gas shut-off valve relay; Fuel tank shut-off valves (CPWA models). |
| ATO | F17 | 7.5A | Main relay; Terminal 30 voltage supply relay; Engine control unit; ABS control unit |
| ATO | F18 | 5A | Battery monitor control unit (Stop/Start models); Data bus diagnostic interface (without Stop/Start models) |
| ATO | F19 | 30A | Wiper motor control unit |
| ATO | F20 | 10A | Alarm horn |
| ATO | F21 | 20A | Up to May 2013: ABS control unit |
| ATO | F22 | 5A | Engine control unit |
| ATO | F23 | 30A | Starter |
| FMX/JCase | F24 | 40A | Auxiliary heater element |
Relay:
| Fuse Type | Fuse No. | Amp Rating | Description |
|---|---|---|---|
| Relay | R1 | — | Starter motor relay 1 -J906 |
| Relay | R2 | — | Starter motor relay 2 -J907 |
| Relay | R3 | — | Horn relay -J413 |
| Relay | R4 | — | High heat output relay -J360 |
| Relay | R5 | — | Up to May 2013: Main relay -J271 (Petrol engine and BiFuel models); Terminal 30 voltage supply relay -J317 (Diesel models). From June 2013: Main relay -J271 (Petrol engine and BiFuel models); Terminal 30 voltage supply relay -J317 (Diesel models). |
| Relay | R6 | — | Automatic glow period control unit -J179 (Diesel engine models) |
| Relay | R7 | — | Low heat output relay -J359 |
| Relay | R8 | — | Up to May 2013: Gas shut-off valves relay -J908 (CPWA); Engine component current supply relay -J757 (CJSA, CJXA, CJXE, CWVA). From June 2013: Gas shut-off valves relay -J908 (CPWA); Engine component current supply relay -J757 (CJSA, CJXA, CJXE, CWVA). |
| Relay | R9 | — | Vacant |
| Relay | R10 | — | Vacant |
SEAT Leon(2014 & 2015)
| Fuse Type | Fuse No. | Amp Rating | Description |
|---|---|---|---|
| FMX/JCase | F1 | 20A / 25A / 40A | 2014: ABS control unit according to equipment (20A or 40A). 2015: ESP control unit (25A). |
| FMX/JCase | F2 | 40A | 2014: ABS control unit. 2015: ESP control unit. |
| ATO | F3 | 15A / 30A | 2014: Engine control unit (15A Petrol, 30A Diesel). 2015: Engine control unit (Diesel/Gasoline). |
| ATO | F4 | 10A / 5A | 2014: Oil level and oil temperature sender, radiator fan control unit, activated charcoal filter solenoid valve, camshaft control valves, turbocharger air recirculation valve, intake manifold flap valve, oil pressure control valve, piston cooling jet control valve, gas mode components. 2015: Engine sensors. |
| ATO | F5 | 10A / 7.5A | 2014: Fuel pressure regulating valve, fuel metering valve, camshaft control valve, engine component current supply relay, injector supply, gas injection valves. 2015: Engine sensors. |
| ATO | F6 | 5A | 2014: Brake pedal position sender. 2015: Brake light sensor. |
| ATO | F7 | 5A / 10A | 2014: Coolant shut-off valve, fuel pressure regulating valve, charge air cooling pump, oil pressure warning lamp, coolant valve, heating assistant pump, auxiliary heating components. 2015: Engine power supplies. |
| ATO | F8 | 15A / 10A | 2014: Lambda probe heater, lambda probe heater after catalytic converter, lambda probe heater for petrol and diesel models. 2015: Lambda sensor. |
| ATO | F9 | 20A / 10A / 5A | 2014: Ignition coils, activated charcoal filter solenoid valve, camshaft control valve, coolant circulation pump, air mass meter, automatic glow period control unit, intake manifold preheating heater element. 2015: Engine. |
| ATO | F10 | 10A / 15A / 20A | 2014: Engine component current supply relay, injectors (CWVA models), fuel pump control unit. 2015: Fuel pump control unit. |
| FMX/JCase | F11 | 40A | 2014: Auxiliary heater element. 2015: PTC auxiliary heater. |
| FMX/JCase | F12 | 40A | 2014: Auxiliary heater element. 2015: PTC auxiliary heater. |
| ATO | F13 | 30A / 15A | 2014: Mechatronic unit for dual clutch gearbox (0CW: 30A, 0D9: 15A). 2015: Automatic transmission control unit (15A). |
| Fuse | F15 | 15A | 2014: Treble tone horn, bass tone horn, horn relay. 2015: Horn. |
| Fuse | F16 | 20A / 15A / 5A | 2014: Engine component current supply relay, ignition coils, fuel system pressurisation pump, gas shut-off valve relay, fuel tank shut-off valves. 2015: Fuel pump control unit (20A). |
| Fuse | F17 | 7.5A | 2014: Main relay, engine control unit, ABS control unit, terminal 30 voltage supply relay. 2015: Engine control unit. |
| Fuse | F18 | 5A | 2014: Battery monitor control unit (Stop/Start system), data bus diagnostic interface. 2015: Terminal 30 reference positive. |
| Fuse | F19 | 30A | 2014: Wiper motor control unit. 2015: Front windshield wipers. |
| Fuse | F20 | 10A | Alarm horn. |
| Fuse | F22 | 5A | Engine control unit. |
| Fuse | F23 | 30A | 2014: Starter. 2015: Starter motor. |
| Fuse | F24 | 40A | 2014: Auxiliary heater element. 2015: PTC auxiliary heater. |
| Fuse | F31 | — | 2014: Not listed in supplied fuse table. 2015: CUPRA electronic differential (15A). |
| Relay | R1 | — | 2014: Starter motor relay 1. 2015: No description provided. |
| Relay | R2 | — | 2014: Starter motor relay 2. 2015: No description provided. |
| Relay | R3 | — | 2014: Horn relay. 2015: No description provided. |
| Relay | R4 | — | 2014: High heat output relay. 2015: No description provided. |
| Relay | R5 | — | 2014: Main relay (Petrol/BiFuel models), terminal 30 voltage supply relay (Diesel models). 2015: No description provided. |
| Relay | R6 | — | 2014: Automatic glow period control unit (Diesel models). 2015: No description provided. |
| Relay | R7 | — | 2014: Low heat output relay. 2015: No description provided. |
| Relay | R8 | — | 2014: Engine component current supply relay (CJSA, CJXA, CJXE, CWVA models), gas shut-off valve relay (CPWA models). 2015: No description provided. |
| Battery Terminal | T1 | — | Voltage supply of fuses SC4–SC14, SC31, SC38, SC39, SC41, SC42, SC53; terminal 15 voltage supply relay; power socket relay; heated rear window relay (2014). |
| Battery Terminal | T2 | — | Alternator (2014). |
| Battery Terminal | T4 | — | Power steering control unit (2014). |
| Battery Terminal | T5 | — | Voltage supply of fuses SC3, SC15–SC21, SC23–SC28, SC43–SC45; trailer voltage supply relay (2014). |
| Battery Terminal | T6 | — | Radiator fan control unit (2014). |
SEAT Leon (2016-2020)
| Fuse No. | Consumer / Protected Component | Amps |
|---|---|---|
| 1 | ESP control unit | 2016: 40/20 A; 2017: 40/60 A; 2018–2020: 25 A |
| 2 | ESP control unit | 2016: 40 A; 2017–2020: 40/60 A |
| 3 | Engine control unit (diesel/petrol) | 2016–2020: 30/15 A |
| 4 | Engine sensors | 2016–2018: 5/10 A; 2019–2020: 7.5/10 A |
| 5 | Engine sensors | 2016–2020: 7.5/10 A |
| 6 | Brake light sensor | 2016–2018: 5 A; 2019–2020: 7.5 A |
| 7 | Engine power supply | 2016–2018: 5/10 A; 2019–2020: 7.5/10 A |
| 8 | Lambda probe | 2016–2020: 10/15 A |
| 9 | Engine | 2016–2019: 5/10/20 A; 2020: 10/20 A |
| 10 | Fuel pump control unit | 2016–2018: 10/15/20 A; 2019: 15 A; 2020: 15/20 A |
| 11 | PTC | 2016–2020: 40 A |
| 12 | PTC | 2016–2020: 40 A |
| 13 | Automatic gearbox control unit (2016–2018) / Automatic gearbox pump (2019–2020) | 2016–2018: 15/30 A; 2019–2020: 30 A |
| 15 | Horn | 2016–2020: 15 A |
| 16 | Fuel pump control unit | 2016–2018: 5/15/20 A; 2019: 7.5 A; 2020: 7.5/20 A |
| 17 | Engine control unit | 2016–2020: 7.5 A |
| 18 | Terminal 30 (positive reference) | 2016–2018: 5 A; 2019–2020: 7.5 A |
| 19 | Front windscreen washer | 2016–2020: 30 A |
| 20 | Alarm horn | 2016–2019: 10 A |
| 21 | Automatic gearbox control unit | 2019–2020: 15/30 A |
| 22 | Engine control unit | 2016–2019: 5 A; 2020: 7.5 A |
| 23 | Starter motor | 2016–2020: 30 A |
| 24 | PTC | 2016–2020: 40 A |
| 31 | Electronic differential CUPRA (2016–2019) / Pressure pump 1.0 (2020) | 2016–2020: 15 A |
| 32 | Front electronic differential | 2019–2020: 15 A |
| 33 | Automatic gearbox pump | 2017–2018: 30 A |
| — | Rear power sockets (In-line fuse) | 2019–2020: 7.5 A |
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