Fuses and relays Volkswagen Passat (B8; 2014 - 2019)

This material examines in detail the fuse diagrams of the Volkswagen Passat (eighth generation; factory index Typ 3G / B8): 2014, 2015, 2016, 2017, 2018, 2019 model years.

Fuse number 40 in the passenger compartment unit is responsible for protecting the electrical circuit of the charging sockets and the cigarette lighter.

In the engine compartment

The fuse box is located on the left side of the engine compartment. To access it, remove the protective cover.

Access example.

Description Current, A
R1 Starter relay 1
R2 Starter relay 2
R3 Horn relay
R4 High Thermal Power Relay (Auxiliary Air Heater Models Only)
R5 Diesel: Voltage supply relay (terminal 30)
Gasoline: Main relay
R6 Hybrid: Low Coolant Indicator Control Unit
Diesel: Automatic glow plug control unit
R7 Low heat output relay (models with additional air heater)
R8 1.8–2.0 l petrol engine: Engine component power relay
Hybrid: Air conditioning relay
R9 Heated windshield relay 1
R1 Heated windshield relay 2
SA1 Voltage relay for terminal 15, Protection of circuits No.: 2, 14, 22, 31, 38, 41, 46, 51, 53 in the passenger compartment, Relay for sockets, Radiator fan (only models with a battery at the rear) 125 / 80
SA2 Generator 400
SA3 Power steering control unit (battery front models only) 80
SA4 Circuit Protection No.: 1, 3, 15, 21, 23, 28, 43, 45, 50 in the cabin unit, Terminal 30, Power Steering Control Module (rear battery models only) 80
SA5 Power Steering Control Module (Rear Battery Models Only), Radiator Fan, Fuse 4 Supply in Fuse Holder A 50
1 ABS control unit 25 / 40
2 ABS hydraulic pump, ABS control unit 40
3 engine control module 15 / 30
4 Oil level and temperature sensor, Radiator fan, Reductant dosing system relay, Low/high heat output relay, Activated carbon filter solenoid valve 1, Camshaft control valve 1, Cylinder 2 and 3 intake and exhaust cam actuator, Fuel cooling valve, Valve Turbocharger air recirculation, Power steering control unit, Exhaust gas recirculation cooler switching valve, Boost pressure control solenoid valve, Boost pressure positioner 10 / 5 / 7,5
5 Fuel metering valve, Fuel pressure control valve, Exhaust cam actuator A and B for cylinders 1-4, Camshaft control valve 1, Injector (cylinders 1-4),. Engine Component Power Relay, High Voltage Battery Coolant Pump and High Temperature Coolant Pump, Transmission Coolant Valve 10
6 Brake light switch 5 / 7,5
7 Circulation Pump, Fuel Metering Valve, Fuel Pressure Regulating Valve, Oil Pressure Control Valve, Radiator Blind Control Engine, Cylinder Head Coolant Valve, Boost Pressure Positioner, Auxiliary Heating Pump, Transmission Oil Cooling Pump, Coolant Switching Valves 2 and 1, Low temperature circuit coolant pump, Coolant shut-off valve, EGR coolant switch valve, Charge air cooling pump, Transmission coolant valve 10 / 15
8 Lambda probe heater, Lambda probe 1 before catalytic converter, Lambda probe heater 1 after catalyst, Lambda probe 1 after catalyst, NOx sender 10 / 15
9 Crankcase ventilation heating element, Ignition coils 1-4 with output stage, Automatic glow plug period control unit, Charge air cooling pump, Mass air flow meter, Exhaust camshaft control valve 1, Activated carbon filter solenoid valve 1, Camshaft control valve 1 5 / 10 / 7,5 / 20
10 Fuel pump control unit 10 / 15 / 20
11 Auxiliary air heating element 40
12 Auxiliary air heating element 40
13 Brake booster, Dual clutch transmission, Dual clutch transmission mechatronics, Auxiliary hydraulic pump 1 for transmission oil 15 / 30
14 Heated windshield relay 30 / 40
15 Horn relay 15
16 Charger 1 for high-voltage battery, Power relay for engine components, Power and control electronics for electric drive 20 / 10
17 Main relay, Heated windshield relay, ABS control unit, Engine control unit, Voltage supply relay to terminal 30 7,5
18 Data bus diagnostic interface, Battery charge monitoring control unit 7,5 /5
19 Windshield wiper motor control unit 30
20 Sound signal 10
21 Dual Clutch Transmission, Heated Windshield Relay 2, Auxiliary Hydraulic Pump 1 for Transmission Oil, Dual Clutch Transmission Mechatronic 15 / 30
22 The engine control unit 7,5 / 5
23 Starter 30
24 Brake booster, Auxiliary air heating element 40
25 Empty -
26 Empty -
27 Empty -
28 Empty -
29 Empty -
30 Empty -
31 Empty -
32 Heated windshield (rear battery models only) 30
33 Dual clutch transmission, Mechatronic dual clutch transmission, Brake pressure accumulator 30 / 15
34 Heated windshield (front battery models only), Power brakes 30 / 5
35 Air Conditioning Relay, Wiper Motor Control Module 7,5 / 30
36 Empty -
37 Additional heater control unit 20
38 Empty -

In the passenger compartment

Right Hand Drive: Located behind the accessory storage box on the passenger side.

Left-hand drive: located on the driver's side behind the storage box for small items.

General view of the interior fuse box of the Volkswagen Passat B8.

Description Current, A
R1 Reductant dosing system relay
R2 Magnetic clutch relay
R3 Empty
R4 Relay for supplying voltage to terminal 15
R5 Heated rear window relay
R6 Cigarette lighter socket relay (charging)
F1 Reductant heater control unit 30
F2 Steering column electronics control unit 10
F3 Empty -
F4 Sound signal 7,5
F5 Data bus diagnostic interface 5 / 7,5
F6 Anti-theft alarm sensor, selector lever 5 / 7,5
F7 Analogue clock, Rear window defroster relay, Magnetic clutch relay, Rear air conditioning control and display unit, Tire pressure monitoring control unit, Heater and air conditioning controls, Additional coolant heater remote control receiver, Selector lever 10
F8 Rain and light sensor, Security alarm sensor, Rotary light switch, Front interior light, Rear door contour lights, Background lighting lamps on the right and left side of the instrument panel, Front door contour lamps, Electromechanical parking brake button, Diagnostic connector, Adaptive control unit lighting and headlight range control 10 / 7,5
F9 Steering column electronics control unit 1 / 5 / 7,5
F10 CD player, Front information panel and control unit display, Head-up display control unit, TV tuner 7,5 / 10
F11 Front left headlight, Front left seat belt pretensioner control unit, Onboard power supply control unit 25 / 40
F12 Information electronics control unit 1 5 / 7,5 / 20
F13 Front left seat belt tensioner control unit, electronic suspension shock absorber control 15 / 25
F14 Supply air fan control unit 30 / 40
F15 Electronic steering column lock control unit 10
F16 Mobile phone storage compartment with interface, Two-way signal booster for mobile phone and data services, Chip card reader, USB hub, TV tuner 7,5
F17 Telematics control unit for real-time monitoring, Instrument cluster, Emergency call module control unit and communication unit 5 / 7,5
F18 Top View Camera Control Unit, Rear Top View Camera, Rear View Camera, Trunk Lid Handle Release Button 7,5
F19 Interface for login and launch system 7,5
F20 Reductant dosing system relay 7,5 / 10
F21 All-wheel drive control unit 15
F22 Trailer detector control unit 15
F23 Sliding sunroof control unit, Front right headlight, Onboard power supply control unit 40 / 20
F24 Control unit for adjusting the sliding sunroof, Onboard power supply control unit, Front right headlight 30 / 40
F25 Rear left door control unit, rear left window lift motor
Left-hand drive: Driver's door control unit (left-hand drive models only)
Right hand drive: Front passenger door control unit
F26 Heated seats, Onboard power supply control unit 30
F27 On-board power supply control unit, Digital audio system control unit 40 / 30
F28 Trailer detector control unit 25 / 20
F29 Empty -
F30 HV Service Connector, HV Battery 1 10
F31 Front left headlight, Rear cover control unit, On-board power supply control unit 40 / 30
F32 Driver assistance systems front camera / Adaptive cruise control unit / Parking assist control unit / Blind spot monitoring control unit 10 / 7,5
F33 Airbag deactivated indicator lamp on the front passenger side, Airbag control unit 7,5 / 5
F34 Switch module 2 in the center console, Electromechanical parking brake button, Interior mirror, Pedestrian warning lamp, Coolant pressure sensor, External air quality and humidity sensor, Socket relay 7,5
F35 Diagnostic connection, Headlight leveling control and instrument lighting control, Headlight leveling control unit, Front left headlight, Front right headlight, Left headlight leveling motor, Right headlight leveling motor 10 / 7,5
F36 Output module 1 for right LED headlight, front right headlight 7,5 / 5
F37 Output module 1 for left LED headlight, front left headlight 7,5 / 5
F38 Trailer detector control unit 25
F39 Left hand drive: Front passenger door control unit (left hand drive models only)
Right hand drive: Driver's door control unit
Rear right door control unit, rear right window lift motor
F40 Fuse for 12V sockets and cigarette lighter for Volkswagen Passat B8 20
F41 Front right seat belt tensioner control unit 25
F42 Central locking, On-board power supply control unit 40
F43 Digital audio control unit, On-board power supply control unit 40 / 30
F44 Trailer detector control unit 15
F45 Driver's seat lumbar support adjustment switch, Driver's seat adjustment control unit, Front left seat adjustment control unit, Massage control unit, Front left seat cushion fan 1, Front left seat back fan 1 15
F46 AC/DC converter with socket, 12V-230V. 30
F47 Rear Curtain Control Module, Rear Window Wiper Motor 7,5 / 15
F48 Engine sound generator control unit 7,5
F49 Starter Relay 1, Starter Relay 2, Clutch Position Sensor, HV Battery 1 7,5 / 5
F50 Rear cover control unit 40
F51 Rear air conditioning control and display unit 25
F52 Electronically controlled damping control unit 15
F53 Heated rear window relay 30
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