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 article, we will take a detailed look at the fuse diagrams for the 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 distribution boxes. Separately, we note the fuses responsible for the cigarette lighter.

In the engine compartment

Main fuse box

 
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

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

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 distribution box is located on the left behind the skin

Access example..

General view.

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