Audi A7 (4G, 2010 - 2018) fuses and relays

A7 (body code - 4G) - a five-door fastback Gran Turismo class manufactured by AUDI AG, on the A6 platform, is positioned in the segment below the A8 model. In this material, we will analyze in detail the fuse diagrams of the Audi A7 (4G) of the 1st generation 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018  with engines 2.8 FSI, 3.0 TDI, 3.0 TFSI, RS7, 4.0 V8.


Here you will find the locations and photos of the mounting blocks. Separately, we note the fuses responsible for the cigarette lighter.

In the engine compartment

Main fuse box

  Location of the main fuse box in the engine compartment
Located near the battery, behind a protective lining.

Diagram
No. Description A
1 Automatic transmission control unit 15
2 Oil level and temperature sensor 5
3 The engine control unit 5
4 5
5 Fuel metering valve 10
6 The engine control unit 10
7 valve lift valve 15
camshaft valve
Exhaust camshaft solenoid valves
coolant circulation pump
8 empty -
9 Voltage regulators 5
10 Oxygen sensor before catalytic converter 15
Oxygen sensor behind catalytic converter
11 Fan control unit 5
Cooling fan control unit 2
12 Automatic transmission control unit 5
13 Transmission oil cooling valve 5
14 Ignition coils 1 - 6 20
15 empty -
16 Secondary air pump relay 15
Relay, additional water pump
Canister purge valve
intake manifold adjustment valve
Oil pressure control valve
Refrigerant circulation solenoid valve
17 Oxygen sensors behind the catalytic converter 10
18 empty -
19 secondary air pump 50
20 empty -
R1 Secondary air pump relay
R2 Starter relay
R3 Power supply relay
R4 Main relay
R5 Relay, additional water pump
R6 empty

Additional fuse box


Located in the central part of the engine compartment.

Diagram
No. A Purpose
1 40 radiator (60A /80A also used)
2 40 radiator (60A /80A also used)

In the passenger compartment

Fuse box #1

Location of the fuse box in the passenger compartment on the driver
Located on the driver's side.


Access example.

Diagram
No. Decryption A
1 TCS/ESP button 5
Air quality improvement control unit
Power steering control unit
Seat heating control unit
Trailer detection control unit
Electric parking brake
Passenger side airbag deactivation indicator
multimedia control unit
2 Automatic anti-glare rear view mirror 5
3 Engine generator sound control unit 10
4 Suspension control sensor 5
5 ABS control unit 5
6 Air quality sensor 5
Refrigerant pressure and temperature sensor
7 Adaptive cruise control 10
8 Airbag control unit 5
"Seat occupied" - recognition control unit
9 Data bus diagnostic interface 5
10 Garage door control unit 5
Night vision control unit
Sound control unit transmitted through the vehicle body structure
11 Camera control unit 10
12 Active Steering 5
13 Data bus diagnostic interface 5
14 Air conditioning control unit 10
15 ABS control unit 10
16 Driver's door control unit 30
17 Front passenger seat adjustment 7.5
18 Active Steering 35
19 Sunroof 20
20 Rear left door control unit 15
21 Driver seat adjustment 5
22 Additional heater control unit 30
23 Sunroof 20
Roof blind control unit
24 Driver's door control unit 15
or not used
25 Clutch position sensor 5
26 Fuel pump control unit 25
27 Stoplight switch 5
28 Exhaust flap control unit 7.5/5
Or 
Reducer control unit
29 Rear left door control unit 30
30 Front passenger seat adjustment 7.5
31 Signal 15
32 Wiper control unit 30
33 Rain and light sensor 5
34 Driver seat adjustment switch 5
35 Front passenger door control unit 15
or not used
36 Rear right door control unit 15

Fuse box #2


Located at the end of the dashboard on the passenger side.


General view.

Diagram
No. Description A
1 Head-Up Display Control Unit 5
2 Vehicle information control unit 5
3 CD changer 5
DVD
4 Information display control unit 7.5
multimedia control unit
5 Chip card reader 5
Traffic Message Channel (TMC) Antenna
6 Control Panel 5
7 Control unit, steering column electronics 7.5
8 Headlight range control unit 7.5
headlight output control unit
9 empty -
10 headlight output control unit 7.5
11 empty -
12 empty -
13 Climatronic 10
14 Supply air fan control unit 40
15 Diagnostic socket (16) 10
16 Electronic anti-theft device 5
17 Steering column lock control unit 5
18 Control unit, steering column electronics 10
19 Steering column adjustment control unit 25
20 Light switch 5
21 empty -
22 empty -
23 empty -
24 empty -

Relay blocks

Place of installation of relay blocks in the passenger compartment
The relay block #3 and #4 is located behind the instrument panel on the driver's side.

Relay block #3
No. Purpose A
1 Terminal 15 supply voltage relay 5
2 empty -
3 Control device 5
4 ABS 20
5 Security alarm 5
6 Power control unit 35
7 20
8 30
9 30
10 30
11 Interior interior lighting 5
Control unit, roof electronics
12 Auxiliary heater remote control receiver 5
13 ABS control unit 40
14 empty
R1 signal relay -
Or
Automatic anti-glare rear view mirror
R2 Terminal 15 supply voltage relay
R3 Vacuum pump relay
R4 empty
Relay block #4
No. Purpose A
R1 Low power heating relay
R2 High power heating relay
R3 Additional air heater control unit
1 Heater 40
2 60

Auxilar fuse holder

Located at the driver's feet.

No. Purpose A
1 Driver seat adjustment 15
2 Passenger seat adjustment

In the luggage compartment


The block is located on the left behind the skin


Access example..


General form.

Diagram
No. Description A
1 Trailer detection control unit 15
2 Trailer detection control unit 20/10
Cup holder with heating and cooling element
3 Trailer detection control unit 20
4 Parking brake control unit 30
5 30
6 Front passenger door control unit 30
7 Comfort control unit 30
8 20
9 seat ventilation 15
10 connector 5
11 Air conditioning control unit 30
Seat heating control unit
12 empty -
13 Seat belt pretensioner 25
14 25
15 Audi A7 cigarette lighter fuse 20
Socket 12V
DC-AC converter with socket, 12 V - 230 V
16 Rear cigarette lighter 20
Additional sockets 12V
17 Electric parking brake 5
18 Adaptive Suspension Control Unit 15
19 Rear right door control unit 30
20 Comfort control unit 30
21 Control device 30
22 telephone 5
23 Audio control unit 30
24 Adjustable rear spoiler control unit 20
25 Audio control unit 30/20
Information display control unit
Radio
26 Fuel tank leakage control unit 5
27 empty  
28 Engine mount control unit 15
Reducer control unit
Or
Reducer control unit
or not used
29 empty -
30 empty -
31 radio tape recorder 7.5
32 multimedia control unit 7.5
Information display control unit
Information display
33 Automatic anti-glare rear view mirror 5
34 Rear view camera system 5
35 TV tuner 5
36 empty -
37 Terminal 15 supply voltage relay 5
38 Parking brake control unit 5
39 Adaptive Suspension Control Unit 5
40 Comfort control unit 5/7.5
Clutch position sensor
Selector lever control unit
41 Parking assistance control unit 5
42 empty -
43 Voltage regulators 5
44 Lane change assist control unit 5
45 Diagnostic socket (16) 5
Power control unit
46 4WD control unit 5
47 empty -
48 empty -
49 Adaptive Suspension Compressor Relay 40
50 Voltage regulators 40
51 Heated rear windshield relay 40
52 Voltage regulators 40
53 4WD control unit 35
54 Reductant dosing system relay 30
or not used
55 Main fuse 15
or not used
56 empty -
57 empty -
R1 Not used
R2 Heated rear window relay
R3 Relay Power Socket
R4 Terminal 15 supply voltage relay
R5 Adaptive Suspension Compressor Relay
R6 Not used
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