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Volkswagen Passat (B8; 2015-2019) fuses and relays

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In this article, we consider the eighth generation Volkswagen Passat (B8), which was produced from 2014 to 2022. In this article, you will find fuse box diagrams of Volkswagen Passat B8 2014, 2015, 2016, 2017, 2018, and 2019, 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 Volkswagen Passat B8

Passenger Compartment Fuse Box (Fuse Panel C -SC-)

Fuse Box Location

Left-hand drive vehicle: The fuse box is located behind the cover on the driver’s side.

Right-hand drive vehicle: The fuse box is located behind the storage compartment on the front passenger side.

Fuse Box Diagram

Assignment of the fuses in the instrument panel fuse box
AmpsFunction / component
SC130 AControl unit for reducing agent heater
SC210 ASteering column electronics control unit
SC3--
SC47.5 AAlarm horn
SC55 A / 7.5 AData bus diagnostic interface
SC65 A / 7.5 AAnti-theft alarm sensor
Selector lever
SC710 AHeater and air conditioning controls
Selector lever
Remote control receiver for auxiliary coolant heater
Heated rear window relay
Analogue clock
Operating and display unit for rear air conditioning system
Tyre Pressure Monitoring System control unit
Magnetic clutch relay
SC810 A / 7.5 ARotary light switch
Electromechanical parking brake button
Rain and light sensor
Diagnostic connection
Anti-theft alarm sensor
Front interior light
Light for left dashboard background lighting
Light for right dashboard background lighting
Light for front left door contour lighting
Light for front right door contour lighting
Light for rear left door contour lighting
Light for rear right door contour lighting
Control unit for cornering light and headlight range control
SC91 A / 5 A / 7.5 ASteering column electronics control unit
SC107.5 A / 10 ADisplay unit for front information display and operating unit control unit
TV tuner
Control unit for Head-up Display
CD player
SC1125 A / 40 AControl unit for front left belt tensioner
Onboard supply control unit
Front left headlight
SC125 A / 7.5 A / 20 AControl unit 1 for information electronics
SC1315 A / 25 AElectronically controlled damping control unit
Control unit for front left belt tensioner
SC1430 A / 40 AFresh air blower control unit
SC1510 AControl unit for electronic steering column lock
SC167.5 ATwo-way signal amplifier for mobile telephone/data services
Storage compartment with interface for mobile telephone
USB hub
Chip card reader
TV tuner
SC175 A / 7.5 ADash panel insert
Emergency call module control unit and communication unit
Telematics control unit for real-time monitoring
SC187.5 AReversing camera
Rear lid handle release button
Control unit for overhead view camera
Rear overhead view camera
SC197.5 AInterface for entry and start system
SC207.5 A / 10 ARelay for reducing agent metering system
SC2115 AAll-wheel drive control unit
SC2215 ATrailer detector control unit
SC2340 A / 20 AOnboard supply control unit
Front right headlight
Sliding sunroof adjustment control unit
SC2430 A / 40 ASliding sunroof adjustment control unit
Onboard supply control unit
Front right headlight
SC2530 ADriver door control unit (Only left-hand drive models)
Front passenger door control unit (Only right-hand drive models)
Rear left door control unit
Rear left window regulator motor
SC2630 AOnboard supply control unit
Seat heating
SC2730 A / 40 ADigital sound package control unit
Onboard supply control unit
SC2820 A / 25 ATrailer detector control unit
SC29--
SC3010 AHigh-voltage battery 1
Maintenance connector for high-voltage system
SC3130A / 40 AOnboard supply control unit
Front left headlight
Rear lid control unit
SC327.5 A / 10 AFront camera for driver assist systems
Adaptive cruise control unit
Parking aid control unit
Park assist steering control unit
Blind Spot Monitor control unit
Blind Spot Monitor control unit 2
SC335 A / 7.5 AAirbag control unit
Warning lamp for airbag deactivated on front passenger side
SC347.5 AElectromechanical parking brake button
Interior mirror
Relay for power sockets
Pedestrian protection warning lamp
Switch module 2 in centre console
Pressure sender for refrigerant circuit
External air quality and air humidity sensor
SC357.5 A / 10 ADiagnostic connection
Headlight range control and instrument illumination regulator
Control unit for cornering light and headlight range control
Front left headlight
Left headlight range control motor
Front right headlight
Right headlight range control motor
SC365 A / 7.5 AFront right headlight
Output module 1 for right LED headlight
SC375 A / 7.5 AFront left headlight
Output module 1 for left LED headlight
SC3825 ATrailer detector control unit
SC3930 AFront passenger door control unit (Only left-hand drive models)
Driver door control unit (Only right-hand drive models)
Rear right door control unit
Rear right window regulator motor
SC4020 ACigarette lighter
12V socket
12V socket 2
12V socket 3
SC4125 AControl unit for front right belt tensioner
SC4240 AOnboard supply control unit
Central locking
SC4330 A / 40 AOnboard supply control unit
Digital sound package control unit
SC4415 ATrailer detector control unit
SC4515 ADriver seat lumbar support adjustment switch
Driver seat adjustment operating unit
Driver seat adjustment control unit
Operating unit for front left seat adjustment
Massage control unit
Front left seat cushion fan 1
Front left seat backrest fan 1
SC4630 ADC/AC converter with socket, 12V - 230V
SC4715 A / 7.5 ARear window wiper motor
Rear roller blind control unit
SC487.5 AEngine sound generator control unit
SC495 A / 7.5 AClutch position sender
Starter relay 1
Starter relay 2
High-voltage battery 1
SC5040 ARear lid control unit
SC5125 AOperating and display unit for rear air conditioning system
SC5215 AElectronically controlled damping control unit
SC5330 AHeated rear window relay
R1Relay for reducing agent metering system
R2Magnetic clutch relay
R3-
R4Terminal 15 voltage supply relay
R5Heated rear window relay
R6Relay for power sockets
Fitting location of front passenger seat adjustment thermal fuse

AmpsFunction/component
A15 AOperating unit for front right seat adjustment
Front right lumbar support adjustment switch
Front right seat cushion fan 1
Front right seat backrest fan 1
B-

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Engine Compartment Fuse Box (Fuse panels B -SB- & A -SA-)

Fuse Box Location

Fuse Box Diagram

Assignment of the fuses in the engine compartment fuse box
AmpsFunction / component
SB125 A / 40 AABS control unit
SB240 AABS control unit
ABS hydraulic pump
SB315 A / 30 AEngine/motor control unit
SB410 A / 5 A / 7.5 ARadiator fan
Oil level and oil temperature sender
Relay for reducing agent metering system
High heat output relay
Low heat output relay
Charge pressure positioner
Activated charcoal filter solenoid valve 1
Exhaust camshaft control valve 1
Camshaft control valve 1
Valve for oil pressure control
Inlet cam actuator for cylinder 2
Exhaust cam actuator for cylinder 2
Inlet cam actuator for cylinder 3
Exhaust cam actuator for cylinder 3
Fuel cooling valve
Exhaust gas recirculation cooler changeover valve
Charge pressure control solenoid valve
Turbocharger air recirculation valve
Power steering control unit
SB510 AFuel pressure regulating valve
Fuel metering valve
Camshaft control valve 1
Exhaust cam actuator A for cylinders 1-4
Exhaust cam actuator B for cylinders 1-4
Injector, cylinders 1-4
Engine component current supply relay
Coolant valve for gearbox
Coolant pump for high-voltage battery
Coolant pump for high-temperature circuit
SB65 A / 7.5 ABrake light switch
SB710 A / 15 A / 7.5 AFuel metering valve
Circulation pump
Radiator blind control motor
Coolant valve for cylinder head
Valve for oil pressure control
Exhaust gas recirculation cooler changeover valve
Charge pressure positioner
Coolant pump for high-temperature circuit
Charge air cooling pump
Auxiliary pump for heating
Coolant valve for gearbox
Coolant shut-off valve
Gearbox oil cooling pump
Fuel pressure regulating valve
Coolant changeover valve 2
Coolant changeover valve 1
Coolant pump for low-temperature circuit
SB810 A / 15 ALambda probe 1 before catalytic converter
Lambda probe heater
Lambda probe 1 after catalytic converter
Lambda probe 1 heater after catalytic converter
NOx sender
SB920 A / 5 A / 10 A / 7.5 AIgnition coils 1-4 with output stage
Heater element for crankcase breather
Automatic glow period control unit
Air mass meter
Charge air cooling pump
Activated charcoal filter solenoid valve 1
Exhaust camshaft control valve 1
Camshaft control valve 1
SB1020 A / 10 A / 15 AFuel pump control unit
SB1140 AAuxiliary air heater element
SB1240 AAuxiliary air heater element
SB1330 A / 15 A / 7.5 AMechatronic unit for dual clutch gearbox
Dual clutch gearbox
Auxiliary hydraulic pump 1 for gearbox oil
Brake servo
SB1440 A / 30 AHeated windscreen relay
SB1515 AHorn relay
SB1610 A / 20 AEngine component current supply relay
Power and control electronics for electric drive
Charging unit 1 for high-voltage battery
SB177.5 AMain relay
Terminal 30 voltage supply relay
Engine/motor control unit
ABS control unit
Heated windscreen relay
SB185 A / 7.5 ABattery monitor control unit
Data bus diagnostic interface
SB1930 AWiper motor control unit
SB2010 AAlarm horn
SB2130 A / 15 AHeated windscreen relay 2
Mechatronic unit for dual clutch gearbox
Dual clutch gearbox
Auxiliary hydraulic pump 1 for gearbox oil
SB225 A / 7.5 AEngine/motor control unit
SB2330 AStarter
SB2440 AAuxiliary air heater element
Brake servo
SB25--
SB26--
SB27--
SB28--
SB29--
SB30--
SB31--
SB3230 AHeated windscreen (Only models with battery at rear)
SB3315 A / 30 A Mechatronic unit for dual clutch gearbox
Dual clutch gearbox
Brake system pressure accumulator
SB345 A / 30 ABrake servo
Heated windscreen (Only models with battery at front)
SB3530 A / 7.5 AWiper motor control unit
Air conditioning system relay
SB36--
SB3720 AAuxiliary heater control unit
SB38--
SA1125 A / 80 ASupply for fuse holder C -SC-
Fuses on fuse holder C: 2, 14, 22, 31, 38, 41, 46, 51, 53
Relay for power sockets
Terminal 15 voltage supply relay
Radiator fan (Only models with battery at rear)
SA2400 AAlternator
SA380 APower steering control unit (Only models with battery at front)
SA480 ASupply for fuse holder C
Terminal 30
Fuses on fuse holder C: 1, 3, 15, 21, 23, 28, 43, 45, 50
Power steering control unit (Only models with battery at rear)
SA550 ARadiator fan
Supply for fuse 4 on fuse holder A
Power steering control unit (Only models with battery at rear)
R1Starter relay 1
R2Starter relay 2
R3Horn relay
R4High heat output relay (Only models with auxiliary air heater)
R5Main relay (Only models with petrol engine)
Terminal 30 voltage supply relay (Only models with diesel engine)
R6Automatic glow period control unit (Only models with diesel engine)
Coolant shortage indicator control unit (Only models with hybrid drive system)
R7Low heat output relay (Only models with auxiliary air heater)
R8Air conditioning system relay (Only models with hybrid drive system)
Engine component current supply relay (Only models with a 1.8–2.0l petrol engine)
R9Heated windscreen relay 1
R10Heated windscreen relay 2

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