Table of Contents
This article provides a detailed overview of the fuse box diagrams for the eighth-generation Volkswagen Passat (chassis codes 3G, CB; MQB platform) for model years 2014, 2015, 2016, 2017, 2018, and 2019.
Fuse 40 in the passenger compartment fuse box protects the electrical circuits for the auxiliary power sockets and the cigarette lighter.
Engine compartment
The fuse box is located on the left side of the engine compartment. Remove the protective cover to gain access.
Access illustration.
| Diagram | ||
|---|---|---|
|
||
| No. | Description | Current (A) |
| R1 | Starter relay 1 | |
| R2 | Starter relay 2 | |
| R3 | Horn relay | |
| R4 | High-heat output relay (models with auxiliary air heater) | |
| R5 | Diesel: Voltage supply relay (Terminal 30) Gasoline: Main relay |
|
| R6 | Hybrid: Low coolant indicator control module Diesel: Automatic glow plug control module |
|
| R7 | Low-heat output relay (models with auxiliary air heater) | |
| R8 | 1.8L–2.0L gasoline engines: Engine component power supply relay Hybrid: Air conditioning relay |
|
| R9 | Heated windshield relay 1 | |
| R10 | Heated windshield relay 2 | |
| SA1 | Terminal 15 voltage supply relay; passenger compartment circuits 2, 14, 22, 31, 38, 41, 46, 51, and 53; power socket relay; radiator fan (models with rear-mounted battery only) | 125 / 80 |
| SA2 | Alternator | 400 |
| SA3 | Power steering control module (models with front-mounted battery only) | 80 |
| SA4 | Passenger compartment circuits 1, 3, 15, 21, 23, 28, 43, 45, and 50; Terminal 30; power steering control module (models with rear-mounted battery only) | 80 |
| SA5 | Power steering control module (models with rear-mounted battery only), radiator fan, fuse 4 supply in Fuse Holder A | 50 |
| 1 | ABS control module | 25 / 40 |
| 2 | ABS hydraulic pump, ABS control module | 40 |
| 3 | Engine control module (ECM) | 15 / 30 |
| 4 | Oil level and temperature sensor, radiator fan, reductant dosing system relay, low/high heat output relay, EVAP canister purge solenoid valve 1, camshaft control valve 1, cylinder 2/3 intake and exhaust camshaft actuators, fuel cooling valve, turbocharger recirculating valve, power steering control module, EGR cooler changeover valve, boost pressure control solenoid valve, boost pressure actuator | 10 / 5 / 7.5 |
| 5 | Fuel metering valve, fuel pressure regulator valve, cylinder 1–4 exhaust camshaft actuators A/B, camshaft control valve 1, fuel injectors (cylinders 1–4), engine component power supply relay, high-voltage battery coolant pump, high-temperature coolant pump, transmission coolant valve | 10 |
| 6 | Brake light switch | 5 / 7.5 |
| 7 | Coolant circulation pump, fuel metering valve, fuel pressure regulator valve, oil pressure control valve, radiator shutter control motor, cylinder head coolant valve, boost pressure actuator, auxiliary heater pump, transmission oil cooling pump, coolant changeover valves 1 and 2, low-temperature circuit coolant pump, coolant shut-off valve, EGR coolant changeover valve, charge air cooling pump, transmission coolant valve | 10 / 15 |
| 8 | Heated oxygen sensor (HO2S) heater, upstream oxygen sensor 1, downstream oxygen sensor 1 heater, downstream oxygen sensor 1, NOx sensor | 10 / 15 |
| 9 | Crankcase breather heater element, ignition coils 1–4 with power stage, glow plug control module, charge air cooling pump, mass air flow (MAF) sensor, exhaust camshaft control valve 1, EVAP canister purge solenoid valve 1, camshaft control valve 1 | 5 / 10 / 7.5 / 20 |
| 10 | Fuel pump control module | 10 / 15 / 20 |
| 11 | Auxiliary air heater element | 40 |
| 12 | Auxiliary air heater element | 40 |
| 13 | Brake booster, dual-clutch transmission (DSG), dual-clutch transmission mechatronic unit, auxiliary transmission oil hydraulic pump 1 | 15 / 30 |
| 14 | Heated windshield relay | 30 / 40 |
| 15 | Horn relay | 15 |
| 16 | High-voltage battery charger 1, engine component power supply relay, electric drive power and control electronics | 20 / 10 |
| 17 | Main relay, heated windshield relay, ABS control module, engine control module (ECM), Terminal 30 voltage supply relay | 7.5 |
| 18 | Data bus diagnostic interface (gateway), battery monitoring control module | 7.5 / 5 |
| 19 | Windshield wiper motor control module | 30 |
| 20 | Horn | 10 |
| 21 | Dual-clutch transmission (DSG), heated windshield relay 2, auxiliary transmission oil hydraulic pump 1, dual-clutch transmission mechatronic unit | 15 / 30 |
| 22 | Engine control module (ECM) | 7.5 / 5 |
| 23 | Starter motor | 30 |
| 24 | Brake booster, auxiliary air heater element | 40 |
| 25 | Unassigned | - |
| 26 | Unassigned | - |
| 27 | Unassigned | - |
| 28 | Unassigned | - |
| 29 | Unassigned | - |
| 30 | Unassigned | - |
| 31 | Unassigned | - |
| 32 | Heated windshield (models with rear-mounted battery only) | 30 |
| 33 | Dual-clutch transmission (DSG), dual-clutch transmission mechatronic unit, brake pressure accumulator | 30 / 15 |
| 34 | Heated windshield (models with front-mounted battery only), brake booster | 30 / 5 |
| 35 | Air conditioning relay, windshield wiper motor control module | 7.5 / 30 |
| 36 | Unassigned | - |
| 37 | Auxiliary heater control module | 20 |
| 38 | Unassigned | - |
Passenger compartment
Right-hand drive (RHD): Located on the passenger side behind the glove compartment.
Left-hand drive (LHD): Located on the driver's side behind the storage compartment.
Overview of the interior fuse box in the Volkswagen Passat B8.
| Diagram | ||
|---|---|---|
|
||
| No. | Description | Current (A) |
| R1 | Reductant dosing system relay | |
| R2 | A/C magnetic clutch relay | |
| R3 | Unassigned | |
| R4 | Terminal 15 voltage supply relay | |
| R5 | Heated rear window relay | |
| R6 | Cigarette lighter / power socket relay | |
| F1 | Reductant heater control module | 30 |
| F2 | Steering column electronics control module | 10 |
| F3 | Unassigned | - |
| F4 | Horn | 7.5 |
| F5 | Data bus diagnostic interface (gateway) | 5 / 7.5 |
| F6 | Anti-theft alarm sensor, gear selector lever | 5 / 7.5 |
| F7 | Analog clock, heated rear window relay, A/C magnetic clutch relay, rear climate control unit, tire pressure monitoring control module, HVAC control panel, auxiliary coolant heater remote receiver, gear selector lever | 10 |
| F8 | Rain and light sensor, anti-theft alarm sensor, headlight switch, front interior lighting, rear door ambient lighting, instrument panel ambient lighting (left/right), front door ambient lighting, electromechanical parking brake switch, OBD2 diagnostic port, adaptive front-lighting system (AFS) and headlight range control module | 10 / 7.5 |
| F9 | Steering column electronics control module | 1 / 5 / 7.5 |
| F10 | CD player, front infotainment display unit, head-up display control module, TV tuner | 7.5 / 10 |
| F11 | Left headlight, front-left seat belt tensioner control module, body control module (BCM) | 25 / 40 |
| F12 | Information electronics control module 1 | 5 / 7.5 / 20 |
| F13 | Front-left seat belt tensioner control module, adaptive chassis control module (DCC) | 15 / 25 |
| F14 | Fresh air blower control module | 30 / 40 |
| F15 | Electronic steering column lock control module | 10 |
| F16 | Mobile phone compartment with interface, cellular signal booster, card reader, USB hub, TV tuner | 7.5 |
| F17 | Telematics control module, instrument cluster, emergency call module and communication unit (eCall) | 5 / 7.5 |
| F18 | Overhead view camera control module, overhead view camera, rearview camera, trunk lid release button | 7.5 |
| F19 | Keyless entry and start system control module (KESSY) | 7.5 |
| F20 | Reductant dosing system relay | 7.5 / 10 |
| F21 | All-wheel drive (AWD) control module | 15 |
| F22 | Trailer recognition control module | 15 |
| F23 | Panoramic sunroof control module, right headlight, body control module (BCM) | 40 / 20 |
| F24 | Panoramic sunroof motor/control module, body control module (BCM), right headlight | 30 / 40 |
| F25 | Rear-left door control module, rear-left power window motor LHD models: Driver door control module RHD models: Front passenger door control module |
30 |
| F26 | Heated seats, body control module (BCM) | 30 |
| F27 | Body control module (BCM), digital sound package amplifier / audio control module | 40 / 30 |
| F28 | Trailer recognition control module | 25 / 20 |
| F29 | Unassigned | - |
| F30 | High-voltage service disconnect plug, high-voltage battery 1 | 10 |
| F31 | Left headlight, tailgate control module, body control module (BCM) | 40 / 30 |
| F32 | Driver assistance front camera, Adaptive Cruise Control (ACC) module, Park Assist module, Blind Spot Monitor module | 10 / 7.5 |
| F33 | Front passenger airbag deactivated indicator lamp, airbag control module | 7.5 / 5 |
| F34 | Center console switch module 2, electromechanical parking brake switch, auto-dimming interior mirror, pedestrian protection indicator, refrigerant pressure sensor, air quality and humidity sensor, power socket relay | 7.5 |
| F35 | OBD2 diagnostic port, headlight range control and instrument illumination control, headlight leveling control module, left headlight, right headlight, left headlight leveling motor, right headlight leveling motor | 10 / 7.5 |
| F36 | Output module 1 for right LED headlight, right headlight | 7.5 / 5 |
| F37 | Output module 1 for left LED headlight, left headlight | 7.5 / 5 |
| F38 | Trailer recognition control module | 25 |
| F39 | LHD models: Front passenger door control module RHD models: Driver door control module ------ Rear-right door control module, rear-right power window motor |
30 |
| F40 | 12V power sockets and cigarette lighter fuse | 20 |
| F41 | Front-right seat belt tensioner control module | 25 |
| F42 | Central locking, body control module (BCM) | 40 |
| F43 | Digital sound package amplifier / audio control module, body control module (BCM) | 40 / 30 |
| F44 | Trailer recognition control module | 15 |
| F45 | Driver seat lumbar support switch, driver seat adjustment control module, front-left seat adjustment control module, seat massage control module, front-left seat cushion fan 1, front-left seat backrest fan 1 | 15 |
| F46 | 12V to 230V AC inverter socket | 30 |
| F47 | Rear roller blind control module, rear window wiper motor | 7.5 / 15 |
| F48 | Engine sound generator control module (Soundactor) | 7.5 |
| F49 | Starter relay 1, starter relay 2, clutch position sensor, high-voltage battery 1 | 7.5 / 5 |
| F50 | Tailgate control module | 40 |
| F51 | Rear climate control unit | 25 |
| F52 | Adaptive chassis control module (DCC) | 15 |
| F53 | Heated rear window relay | 30 |