Volkswagen Passat B7 – represents the 7th generation of the passat series. But at the same time, this is not a completely new model, in many ways it represents a deep restyling of the previous generation b6 . Even their interior is very similar. Produced in 2010, 2011, 2012, 2013, 2014 and 2015. In our article you will find a designation of fuses and relays Volkswagen Passat B7 with photographs and box diagrams in which they are located. Let’s highlight the fuse responsible for the cigarette lighter. We will also show the location of all electronic control units.
The purpose of fuses and relays, as well as their number, may differ from the one presented and depends on the configuration of your car and its year of manufacture.
Multifunction control unit ^ Functions: Electric load control. Exterior lamps, footwell lamps, fuel pump, heated rear window, defrosted windscreen, turn signals / hazard warning lights, rear window wiper
32
Multifunctional control unit 2- functions: Anti-theft system, central locking. drive for opening the fuel filler flap, immobilizer, Central locking remote control system, sunroof
33
Ambient temperature sensor
35
Parking brake control unit
36
Power steering control unit – on the steering rack
37
Seat heating control unit – under the driver’s seat
38
Steering column electronics control unit – on the steering column
39
Steering column lock control unit – on the steering column
40
Stop-start system control unit
41
SRS electronic control unit
42
Suspension control unit – luggage compartment right
43
Trailer control unit – left luggage compartment
44
Electronic Transmission Control Unit (TCM) (DSG Transmission)
45
Electronic Transmission Control Unit (TCM) (Automatic Transmission) – Inner Fender (Front Left)
Location of fuse and relay boxes
Diagram
Appointment
Passenger side instrument panel fuse box
Box next to the battery
Box behind trim in luggage compartment
Driver’s side instrument panel fuse box
Relay boxes
Fuse and relay box under the hood
Main fuse box
Passenger compartment
Driver side fuse box
It is located in the left end of the instrument panel, behind the protective cover.
Photo for example
Diagram
Assignment
1
10A Rear window blinds, High pressure sensor, Air pollution sensor, Oil level and temperature sensor, Supply fan relay
2
5A ASR and ESP off button, AUTO HOLD button, ABS unit, Electromechanical parking brake control unit
3
10A Power supply relay, Crankcase ventilation heating resistor, Gas valve
4
10A Electronic damping control control unit, Diagnostic connector, Start-stop button, Adaptive cruise control control unit, Parking aid control unit, Trailer detection control unit, Park assist control unit, Front camera for driver assistance systems
5
10A Dimmer for switches and instrument cluster illumination, Headlight range control, Left headlight control unit
6
10A All-wheel drive control unit
7
5A Instrument Cluster Control Unit, Data Bus Diagnostic Interface
8
10A Right headlight control unit, right headlight range control actuator
9
10A Airbag control unit, Seat occupied recognition control unit, Front passenger airbag deactivation warning lamp
10
10A Tiptronic switch, Air mass meter, Fuel pump control unit, Fuel pump control unit, Motronic power relay, Engine control unit, Starter relay
11
5A Emergency data logger key, Mirror with taximeter, Tachograph
12
10A Driver’s door control unit, Front passenger door control unit, Comfort unit
13
10A Light switch, diagnostic connector, selector, ABS control unit
14
10A Alarm Siren
15
10A Rain and light sensor, Heated rear window relay, Heated windscreen relay, Climatronic control unit, Air conditioning control unit, Rear view camera control unit, Terminal and engine start control unit
16
10A Electronic ignition lock, Electronic steering column lock control unit, Terminal enable and engine start control unit
17
15A Driver’s door control unit, Driver’s side rear door control unit
18
3A Onboard supply control unit, Voltage stabilizer, Engine control unit, Power supply relay 2
19
7.5A Adaptive cruise control control unit, Park assist control unit, Lane departure warning control unit, Park assist control unit
20
5A Garage door opener control panel
21
10A Rear curtain control unit
22
20A Electromechanical parking brake control unit
23
15A Trailer recognition control unit
24
20A Electromechanical parking brake control unit
25
20A Trailer recognition control unit
26
20A Onboard supply control unit
27
15 / 20A Fuel pump relay
28
30A Rear door control unit, Convenience system central control unit
29
20A Rear seat heating control unit
30
20A Sliding sunroof control unit
31
30A Inverter with socket, 12V – 230V
32
30A Onboard supply control unit (heated rear window)
33
30A Relay for headlight cleaning system, headlight washer pump
34
25A Front seat heating control unit
35
15A Tailgate control unit, Driver seat lumbar adjustment switch
36
15A Switch for adjusting the lumbar support of the seat, Button for adjusting the angle of inclination of the seat cushion, Button for adjusting the position of the backrest, Trailer power relay
37
20 / 30A Trailer detector control unit, Luggage compartment lid control unit 2
38
40A Supply fan relay, Supply fan control unit, Climatronic
39
5 / 15A Multifunction switch (only for vehicles with 6-speed automatic transmission), Automatic transmission control unit, Reversing light switch, DSG gearbox mechatronic unit
40
20A Second battery charging relay, Windscreen washer pump, Rear window wiper motor
41
20A Cigarette lighter
42
15A Socket 12V
43
20A Additional heater control unit (only with a second battery)
44
30A Driver and passenger door control unit
45
20А Relay for operation in the autonomous heater mode (only in the presence of a second battery)
46
Not used
47
10A Telephone transceiver (only vehicles with start-stop system)
48
5A Control unit in the instrument cluster (only vehicles with start-stop system)
49
Not used
The fuse number 41, 20A, is responsible for the cigarette lighter. And for the headlight washers – 33 to 30A.
Passenger side fuse box
Located in the right end of the dashboard, just like the left, it is covered with a protective cover.
Diagram
Assignment
1
15 / 30A Tailgate control unit, Trailer detection control unit
2
15 / 30A Tailgate control unit 2, Trailer detection control unit
3
10 / 30A Sunroof blind control unit, Trailer detection control unit
4
15A BU for electronic damping control system
5
Not used
6
Not used
7
Not used
8
Not used
9
Not used
10
Not used
11
Not used
12
Not used
13
Special vehicles
14
Special vehicles
15
Special vehicles
16
Portable radio or flashlight charger
17
Special vehicles
18
Special vehicles
19
Special vehicles
20
Special vehicles
21
Special vehicles
22
Special vehicles
23
Special vehicles
24
Special vehicles
Relay boxes
They are located under the dashboard, on the driver’s side, behind the trim.
Photo for example
Upper relay box
Diagram
Designation
1
Supply fan relay (Climatic with auxiliary heater)
2
Relay for auxiliary heater operation (Climatic with auxiliary heater)
3
Relay for auxiliary heater operation (Diesel engine with auxiliary heater)
4
Not used
5
Coolant circulation relay after off Engine (1.8L / 2.0L TFSI only), Power Relay
6
Relay for power supply terminal 50 (not for vehicles with start-stop system)
7
Power supply relay 2 (not for vehicles with start-stop system)
8
Power supply relay 2 (not for vehicles with start-stop system)
A and B – Thermal fuse for adjusting the position of the driver’s seat
Lower relay box
Diagram
Designation
1
Heated rear window relay (645)
2
Terminal 15 power supply relay (645)
3
Dual tone horn relay (646), Headlamp cleaning relay (646)
4
Trailer power relay (from May 2012)
5
Relay for unloading contact X (644)
Please note that other relay elements can also be located separately, for example, the Relay for charging the second battery.
Engine compartment
The fuse and relay box is located on the left side of the engine compartment under the protective cover and consists of 2 sections: a mounting box and a section for high power main fuses. Not far from it is the relay communication unit.
Mounting box
Type 1
Diagram
Appointment
1
15A Block Mechatronik KP DSG
2
30A ABS control unit
3
20A Horn, Onboard supply control unit
4
20A Trailer recognition control unit
5
5A Control unit for battery monitoring, Onboard supply control unit
6
5A Automatic gearbox control unit, 15A DSG gearbox mechatronic unit
7
15A Control unit with display for TV and radio navigation system, Head unit, Control unit with display for radio navigation system, 30A Voltage stabilizer
8
30A DSG gearbox mechatronic unit
9
5A Steering column control unit
10
20A Fuel pump relay (diesel only), Glow plug control unit, Ignition coils with output stage (cylinders 1 – 4)
11
5A Control unit in the instrument cluster (only vehicles with start-stop system)
12
5A Control unit for control electronics of a mobile phone, Antenna, TV tuner, Digital satellite.
13
10A Power relay Motronic, Power relay cl. 30, Engine control unit
14
25 / 30A Engine control unit
15
5 / 10A Data bus diagnostic interface
16
15A Relay for pumping coolant after off. engine, 10A Exhaust gas recirculation valve, Solenoid valve for boost pressure limitation, Lambda probe heating element
17
40A Low power heating relay, Coolant circulation pump, Shut-off and safety valve for 1 gas cylinder
18
10/15 / 30A Fuel quality sensor, High pressure valve for gas operation
19
30A Amplifier
20
5A Additional fuel pump relay, Radiator fan control unit, Glow plug control unit, 10A Clutch pedal position sensor, Variable valve timing valve 1, 15A Fuel pressure regulator
21
20A Additional heater control unit
22
30A wiper motor control unit
23
5A Magnetic field sensor for compass, Glow plug control unit, 10A Electronically controlled engine cooling thermostat, Radiator fan control unit, Air / intake flap motor, Heating element lambda probe, valve timing and manifold
24
10 / 15A Nitrogen oxide emission sensor control unit, Lambda probe heater
25
40A Onboard supply control unit, Dipped beam, High beam, Dimensions
26
40A Onboard supply control unit, Dipped beam, High beam, Dimensions
27
60A Heated windshield element
28
40 / 50A Secondary air pump motor, Glow plug control unit
29
50A Control unit for onboard fuse supply, Contact relief relay X
30
50A Onboard fuse network control unit
Type 2
Diagram
Designation
1
5 / 15A Automatic gearbox control unit, DSG mechatronic unit
2
30A ABS control unit
3
20A Convenience system central control unit, Trailer recognition control unit
4
5A Onboard supply control unit
5
20A Sound signal
6
20A Ignition coils with output stages
7
15A Fuel pressure regulator, 5A Clutch pedal position sensor
8
10A Radiator fan control unit, Timing valve, Ejection pump valve, Intake manifold flap valve
9
5A Circulation pump relay
10
10A Power relay 2 Motronic, lambda probe heating element
11
25 / 30A Engine control unit
12
Not used
13
Not used
14
Not used
15
10A Circulation pump
16
5A Steering column control unit
17
5A Instrument cluster control unit
18
30A Amplifier, Control unit for special vehicles
19
15 / 20А Head unit, Control unit with display of radio navigation system
20
20A Mobile phone, TV, digital satellite
21
10A TV Tuner, Digital Satellite Radio Tuner
22
7.5A Multimedia system control unit
23
10A Radiator fan control unit, 5A Magnetic field sensor for compass
24
5 / 10A Data bus diagnostic interface
25
Not used
26
10A Engine Control Unit, Motronic Power Relay
27
Not used
28
Not used
29
Not used
30
20A Additional heater control unit
31
30A wiper motor control unit
32
10A Boost pressure valve
33
15A Fuel pressure regulator, Lambda probe heating element
34
Not used
35
20A Relay for auxiliary heater operation
36
Not used
37
Not used
38
Not used
39
Not used
40
Not used
41
Not used
42
Not used
43
Not used
44
10A Diagnostic pump of the fuel system
45
10A Lambda Sensor
46
10A Heating element for lambda probe 1 after catalyst
47
40A Onboard supply control unit, dipped headlights, side lights
48
40A Onboard supply control unit, dipped headlights, side lights
49
Onboard fuse supply control unit
50
Not used
51
60A Relay of high power heating
52
60A Heated windshield element
53
50A Onboard supply control unit, Left fuse box
54
50А Э / motor for additional air supply, Glow plug relay
Relay
A1 – Relay for gas shut-off valves
A2 – Relay for pumping coolant after off. engine
A3 – Reserve
A4 – Main relay
Main fuse box
It consists of high power fuses in the form of fusible links.
Type 1
Diagram
Assignment
1
150 / 180A – Generator
2
80A Electric motor for electric power steering
3
50 / 80A Radiator fan control unit
4
80 / 100A Thermal fuse 1 seat adjustment, Fuse box left / right
5
80A Right Fuse Box (up to April 2008), Driver’s Seat Adjustment Thermal Fuse 1
6
80 / 100A Fuse box left / right
7
40A ABS control unit
Type 2
Diagram
Designation
1
150A – Generator
2
80A Electric motor for electric power steering
3
50 / 80A Radiator fan control unit
4
60A Thermal Fuse 1 Seat Adjustment, Left / Right Fuse Box
5
60 / 80A Thermal fuse 1 seat adjustment, Fuse box left / right
6
80 / 100A Fuse box left / right
7
60А Second battery charging cable, 100А – heating element of additional air heater, Relay of high heating power
8
40A ABS control unit
Relay box
Diagram
Protected components
1
Starter relay 1 (643) – only for vehicles with start-stop system
2
Glow plug control unit (457)
3
Not used
4
Low power relay (53)
5
High power heating relay (100)
6
Starter relay 2 (489) – only for vehicles with start-stop system
A separate heated windscreen relay can be located in the plenum chamber next to the engine control unit.
Luggage compartment
Some models with a battery installed in the luggage compartment have additional protection elements in the form of fuses and relays.
Appointment
1
30A Fuse box left / right
2
80A Fuses in the switching unit
3
125A Power supply of the switching unit
4
5A Onboard supply control unit
In the left part of the luggage compartment behind the side lining, several relay elements can be located: 70A – Limousine, 60A – Variant
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That’s all. We hope that this material was useful to you. And if you have something to add, write in the comments.
I have a 2013 Volkswagen Passat S. From all the pictures and diagrams not one matches the fuse box under the hood. I’m trying to figure out where the horn relay is. I don’t have the relays in the lower section on the driver’s side. What’s there is a little storage compartment like a little glove box. As I said earlier nothing you have matches where I’m assuming is the fuse and relay box. There are some things that look like maybe relays but can’t find anything that matches my car
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where is the relay for a 2012 vw passat a/c
I have a 2013 Volkswagen Passat S. From all the pictures and diagrams not one matches the fuse box under the hood. I’m trying to figure out where the horn relay is. I don’t have the relays in the lower section on the driver’s side. What’s there is a little storage compartment like a little glove box. As I said earlier nothing you have matches where I’m assuming is the fuse and relay box. There are some things that look like maybe relays but can’t find anything that matches my car