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Cupra Formentor (2020-2022) fuses and relays

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The compact crossover Cupra Formentor is available from 2020 to the present. In this article, you will find fuse box diagrams of Cupra Formentor 2020, 2021, and 2022, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Fuse Layout Cupra Formentor 2020-2022

Passenger Compartment Fuse Box

Fuse Box Location

Left-hand drive vehicles: The fuse panel is behind the cover. Fold the cover down to access.

Right-hand drive vehicles: The fuses are located in the glove compartment. 

Fuse Box Diagram (-SC-)

Assignment of the fuses in the instrument panel (Fuse holder C)
№AmpsFunction/component
SC1--
SC2--
SC325ATrailer detector control unit
SC420ASCR, Adblue
SC525AParking lock sender
Parking lock actuator
SC630AOnboard supply control unit (interior light)
SC730AHeated deats
Heater and air conditioning controls
Heater and air conditioning system control unit
SC820ASliding sunroof adjustment control unit
SC930ADriver door control unit (LHD)
Rear left door control unit
Front passenger door control unit (RHD)
SC10--
SC1115ATrailer detector control unit
SC1240AOnboard supply control unit (right lights)
SC1340AOnboard supply control unit (central locking)
SC1430ADigital sound package amplifier
SC15--
SC167.5AAirbag control unit
SC1710ARelay for reducing agent metering system
SC187.5AInterface for entry and start system (KESSY)
Control unit 2 for break-in protection
Control unit 3 for break-in protection
Control unit for electronic steering column lock
Control unit 5 for break-in protection
Control unit 4 for break-in protection
Driver exterior door handle
SC197.5AEmergency call module control unit and communication unit
Dash panel insert
SC207.5AStorage compartment with interface for mobile telephone
Transmission and reception stabilisation control unit
USB connection 1
SC217.5ARear overhead view camera
Control unit for overhead view camera
Blind spot monitor control unit
Blind Spot Monitor control unit 2
Rear lid power opening control unit
SC22--
SC23--
SC2415AAll-wheel drive control unit
SC2525AFront left seat belt (LHD)
Front right seat belt (RHD)
SC2630AFront passenger door control unit (LHD)
Rear right door control unit
Driver door control unit (RHD)
SC2725AFront left seat belt (LHD)
Front right seat belt (RHD)
SC2810AHybrid battery unit
Pilot line connector 1
SC2915ATrailer detector control unit
SC3020AMultimedia system
Control unit 1 for information electronics
SC3125ATrailer detector control unit
SC32--
SC33--
SC3430ADC/AC converter with socket, 12V - 230V
SC3540AOnboard supply control unit (left lights)
SC3640AFresh air blower control unit
SC3730ARear lid control unit
SC38--
SC3910AHeated steering wheel
Steering column electronics control unit
SC407.5AAlarm horn
Anti-theft alarm system horn
SC417.5AData bus diagnostic interface
SC427.5ASelector mechanism
Selector lever position display
Control unit for electronic steering column lock
SC4310AOperating and display unit for rear air conditioning system
Heater and air conditioning controls
Heater and air conditioning system control unit
Vehicle interior temperature sensor
Heated rear window relay
Heater and air conditioning system control unit
SC447.5ASwitch module 1 in centre console
Operating unit for lighting
Air humidity, rain and light detector sensor
Front roof module
Anti-theft alarm sensor
Diagnostic connection
SC457.5ASteering column electronics control unit
SC467.5ADisplay unit for front information display and operating unit control unit
SC4715AElectronically controlled damping control unit
SC487.5AUSB charging socket 1
SC49--
SC50--
SC51--
SC5220A12V socket
12V socket 2
SC53--
SC54--
SC55--
SC56--
SC57--
SC587.5AParking aid control unit
Adaptive cruise control unit
Front camera for driver assist systems
SC597.5ASwitch module 1 in centre console
Relay for power sockets
Air quality sensor
Pressure sender for refrigerant circuit
Interior mirror
Reversing light switch
Control unit for structure-borne sound
SC607.5ADiagnostic connection
SC617.5AHybrid battery unit
Power and control electronics for electric drive

DNFB:
Starter relay 1
Starter relay 2

DNWB:
Terminal 15 voltage supply relay

DNNA:
Starter relay 2
SC62--
SC63--
SC64--
SC6510AEngine sound generator control unit
SC6615ARear window wiper motor
SC6730AAmplitude modulation (AM) frequency filter
Frequency modulation (FM) frequency filter in positive wire
Heated rear window
In-line fuses:
30A230V rear power sockets
15AElectric driver's seat
R1Relay for power sockets
R2Terminal 15 voltage supply relay
R3Heated rear window relay
R4Relay for reducing agent metering system (diesel)
R5-
R6-
Individual fuses

№AmpsFunction/component
A15ADriver seat adjustment control unit
Control unit for front right seat adjustment
Control unit for front left seat adjustment
B--
C7.5AUSB charging socket 1
USB connection 1
D--
E--

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Engine Compartment Fuse Boxes

Fuse Box Location

Press the locking tabs to release the cover.

Fuse Box Diagram (-SB-)

Assignment of the fuses in the engine compartment (Fuse holder B)
№AmpsFunction/component
SB180APower steering control unit
SB27.5AABS control unit

DGEA, DNNA:
Main relay
Engine control unit
SB37,5A/10A/20ACharging unit 1 for high-voltage battery
Power and control electronics for electric drive
Fuel pump control unit

DNFB, DNNA:
Engine component current supply relay

DNWB:
Starter relay 2
SB415AFront left headlight
SB515AFront right headlight
SB6--
SB730AGearbox oil cooling pump
SB840ABrake servo
SB915AHorn relay
SB1030AWindscreen wiper motor
SB117,5AEngine component current supply relay (PHEV Climate)
SB1230A/15AMechatronic unit for dual clutch gearbox
SB1325AABS control unit
SB1420AEngine component current supply relay (Heater)
SB1540AABS control unit
SB1650AMechatronic unit for dual clutch gearbox / PHEV
SB1740A/50AAuxiliary air heater element
SB1840AAuxiliary air heater element
SB19--
SB2015AAxle differential lock control unit
SB217.5AEngine control unit
SB2230AStarter
SB2315AEngine control unit
SB247,5A/10ARegeneration air blower
Oil level and oil temperature sender
Radiator fan
Engine component current supply relay

DGEA:
Activated charcoal filter solenoid valve 1
Exhaust camshaft control valve 1
Valve for oil pressure control
Inlet camshaft control valve 1

DNFB:
Activated charcoal filter solenoid valve 1
Intake manifold flap valve
Camshaft control valve 1
Turbocharger air recirculation valve
Exhaust camshaft control valve 1
Valve for oil pressure control
Inlet camshaft control valve 1

DNWB:
Injector 2, cylinder 1~5
Secondary air pump relay
Starter relay 2
SB257,5A/10ADNFB:
Cam adjustment actuator 1~8

DGEA:
Coolant circulation pump before power and control electronics for electric drive
Heater coolant shut-off valve
Coolant valve for gearbox
Coolant changeover valve 1

DNWB:
Coolant shut-off valve
Solenoid for coolant circuit
SB267,5A/10ADNFB:
Coolant valve for gearbox
Exhaust flap control unit
Exhaust flap control unit 2
Coolant circulation pump

DGEA:
Charge air cooling pump

DNWB:
Camshaft control valve 1
Exhaust camshaft control valve 1
Engine/motor control unit
Exhaust cam actuator for cylinder 1~5
DNNA Coolant circulation pump
SB2710A/15ALambda probe 1 after catalytic converter
Lambda probe 1 before catalytic converter
SB2810A/20A2021-2022: Ignition coil 1~4 with output stage
SB2915A/20A/30AFuel pump control unit
SB3010ACoolant pump for low-temperature circuit 2

DGEA:
Auxiliary pump for heating
Fuel tank shut-off valve

DNWB:
Oil level and oil temperature sender
Charge pressure control solenoid valve
Turbocharger air recirculation valve
Crankcase breather valve
Intake manifold flap valve
Activated charcoal filter solenoid valve 1
SB31--
SB32--
SB3340AAuxiliary air heater element
R1Main relay (petrol)
Terminal 30 voltage supply relay (diesel)
R2High heat output relay (diesel)
Secondary air pump relay (petrol 2.0L/2.5L)
R3Horn relay
R4Starter relay 1
R5Starter relay 2
R6Engine component current supply relay (petrol 2.0L/2.5L)
Fuel pump relay (petrol 1.5L)
Air conditioning system relay (hybrid)
R7Automatic glow period control unit (diesel)
R8Low heat output relay (diesel)

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Connection and Distribution Box 2 (SX2)

№AmpsFunction/Component
B1-Supply fuse holder A
D1400AStarter
Fuse Holder A (Hybrid drive)

№AmpsFunction/component
SA1150AFuse holder B
SA250ARadiator fan
SA3200AAuxiliary air heater element
SA4125AFuse holder C
SA5125AFuse holder C
Single fuse (JX1)

№AmpsFunction/component
A80Apower and control electronics for electric drive
Single fuse (SX6)

№AmpsFunction/component
A350AHybrid battery unit (switching unit for high-voltage battery)

Luggage Compartment Fuses

Fuse Holder A (2.5L petrol)

№AmpsFunction / component
A125AFuse holder C, A1
B80AFuse holder C, A2
C-not assigned
D125AFuse 4 on fuse holder A
Power steering control unit
Fuse 1 on fuse holder B
Fuse 2 on fuse holder B
Main relay

Fuse Holder F (Hybrid)

№AmpsFunction/component
A1A175AFuse 3 on fuse holder A
Relay and fuse carrier 1
B1A--
Learn more:

How to check the fuses?

How to replace a blown fuse?

Why do car fuses blow?

Types of automotive fuses

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