Audi Q3 (8U) | 2011-2019 | Fuse Box Diagrams and Locations

In this article, we focus on the first-generation Audi Q3 (chassis code 8U), a compact luxury SUV produced from 2011 to 2019. Combining Audi’s hallmark design, premium features, and dynamic performance, the first-generation Q3 quickly became a popular choice for those seeking a versatile yet luxurious vehicle.

Here, you will find detailed fuse box diagrams for Audi Q3 models produced in 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 and 2019. These diagrams provide valuable insights into the vehicle’s electrical systems, including the assignment of each fuse (fuse layout) and relay. This information is essential for troubleshooting electrical issues, performing routine maintenance, or carrying out necessary repairs.

This guide is a comprehensive resource for understanding the electrical system of the first-generation Audi Q3, ensuring that owners and technicians have the knowledge and tools needed to maintain the functionality, reliability, and performance of this premium compact SUV.

The cigar lighter (power outlet) fuses in the Audi Q3 are fuse No.36 and fuse No.37 located in the Instrument Panel Fuse Box.

What’s Included

Instrument panel fuse box

Fuse Box Location

The location of the fuses in the passenger compartment: Audi Q3 (8U; 2011-2017)

The fuses are located behind the storage compartment.
Open the storage compartment, press in on the left and right brackets and pivot the compartment all the way down.

Fuse Box Diagram

Assignment of the fuses in the instrument panel

№	Amps	Function / component
1	10A	Left LED headlight control unit 1
2	10A	Right LED headlight control unit 1
3	5A	Glove box light switch Vanity mirror contact switch, driver’s side Vanity mirror contact switch, passenger side Glove box light Vanity mirror light, passenger side Vanity mirror light, passenger side driver Front roof module (2011-2014)
4	5A	Front camera for driver assistance systems
5	10A	2011-2013: Power module for left headlight
5	5A	2014-2019: Power module for left headlight
6	10A	2011-2013: Power module for right headlight
6	5A	2014-2019: Power module for right headlight
7	7.5A	Control unit el. steering column lock
8	7.5A	Entry and start authorization control unit
9	5A	Front passenger airbag deactivation warning lamp Airbag control unit
10	10A	2011-2013: Four-wheel drive control unit
11	–	–
12	5A	Mechatronic unit for dual clutch gearbox Selector lever sensor control unit
13	5A	Oil level and oil temperature sender Start / stop button ASR and ESP button Reversing light switch High pressure sender Air quality sender Climatronic control unit Control unit conditioner unit relay 1 power relay 2 power The control lamp for aUTO HOLD Button for aUTO HOLD Interior rear-view mirror with automatic anti-dazzle Rearview mirror heating Left injector resistor Right injector heating resistor Seat occupied recognition control unit
14	7.5A	Starter relay 1 Starter relay 2
14	7.5A	Light switch Brake light switch Brake pedal sender Engine control unit Trailer detector control unit Electronic damping control unit ABS control unit Power steering control unit Data bus diagnostic interface Terminal 15 supply relay 2
15	10A	Crankcase ventilation heater (diesel) Air mass meter (petrol)
15	10A	Control unit for headlight range control Voltage stabilizer Interior mirror relay with automatic dimming Electromechanical parking brake control unit Control unit for headlight range control and headlight range control Socket relay Connector, 16-pin (diagnostic socket) Headlight range control adjuster Left headlight range control motor Right headlight range control motor
16	5A	Parking aid control unit Lane change assist control unit Control unit 2 for lane change assist
17	5A	Reversing camera control unit
18	5A	Radio TV tuner Internet access control unit Chip card reader control unit
19	5A	Onboard supply control unit Voltage stabilizer Engine control unit
20	5A	ABS control unit Air conditioning control unit Climatronic control unit Interface control unit for vehicle positioning system
21	–	–
22	10A	Interior sensor Hazard warning system
23	10A	Light switch Rain and light sensor Electromechanical parking brake warning lamp 16-pin connector (diagnostic connector) Front roof module
24	10A	Relay for additive dosing system
25	20A	Fuse 4 on fuse holder C Fuse 5 on fuse holder C Fuse 6 on fuse holder C
26	15A	Rear window wiper motor
27	30A/40A	Starter relay 1 Starter relay 2
28	15A	Information electronics control unit 1 Radio (only for vehicles with radio)
28	7.5A	Information electronics control unit 1 (only for vehicles with MMI)
29	15A	Fuse 18 on fuse holder C Fuse 17 on fuse holder C
30	5A	CD change
31	5A	Display for dash panel insert
32	5A	Control unit in dash panel insert
33	10A	Relay for interior rearview mirror with automatic anti-dazzle function
34	10A	Rear left door control unit (central locking, rear left door) Rear right door control unit (central locking, rear right door) (up to October 2012)
35	10A	Driver door control unit (central locking, front left door) Front passenger door control unit (central locking, front right door) (up to October 2012)
36	20A	Socket Cigar lighter
37	20A	12V socket 2 12V socket
38	15A	Power supply relay 2
39	–	–
40	15A	Trailer detection control unit
41	20A	Trailer detection control unit
42	20A	Trailer detection control unit
43	20A	Headlamp cleaning relay Headlight cleaning pump
44	30A	Heated rear window relay Heated rear window
45	20A	Electromechanical parking brake control unit
46	20A/30A	2011-2012: Rear left door control unit Rear right door control unit (up to October 2012) 2014-2019: Relay for trailer voltage supply
47	15A’30A	2011-2012: Driver door control unit 2013: Four-wheel drive control unit
48	30A	2011-2012: Front passenger door control unit
49	25A	Fuel pump relay Fuel pump control unit (only for vehicles with petrol engine)
50	40A	X-terminal unloading relay Fresh air blower control unit Fresh air blower
51	20A	Electromechanical parking brake control unit
52	20A	Onboard supply control unit (footwell lighting, terminal 30G, terminal 58d, luggage compartment lighting) Hazard warning lamp Fuel pump relay
53	30A	Climatronic control unit (Heated front seat with automatic air conditioning) Control unit for heated front seat (Heated front seat with manual climate control)
54	20A	Sliding sunroof control unit
55	20A	Sunroof blind control unit
56	20A	Electronic damping control control unit
57	10A	Special vehicle control unit (only for vehicles with driving aids)
57	10A	Power supply relay 1 (only for vehicles for driving schools)
58	5A	Power supply relay 2 (only for driving school vehicles)
59	–	–
60	–	–

Thermal fuse box

№	Protected components
1	Thermal fuse 1 for driver’s seat adjustment
2	Thermal fuse 1 for front passenger seat adjustment
3	Fuse for trailer terminal 30

Relay box

№	Description
1	Terminal 15 voltage supply relay
2	Horn relay
3	Socket relay
4	X contact relief relay
5	Relay for auxiliary coolant pump (petrol) Fuel pump relay (diesel)
7	Relay for dimming rearview mirror Voltage supply relay 2, terminal 15 Headlight washer relay
8	Trailer voltage supply relay
9	Starter relay 1 Starter relay 2

Relay box on the onboard supply control unit

№	Description
1	High heat output relay
2	Low heat output relay
3	–
4	Relay for additive dosing system
5	Voltage supply relay 1 Voltage supply relay 2

Engine compartment fuse box

Fuse Box Location

The location of the fuses in the engine compartment: Audi Q3 (8U; 2011-2017)

To unlock the fuse cover, move both the left and right sliders forward.

Fuse Box Diagram (Type 1)

Assignment of the fuses in the engine compartment (type 1)

№	Amps	Function / component
F1	40A	Voltage stabilizer Fuse supply -SC28- to -SC33- (only for vehicles with start / stop system)
F2	10A	Electric lumbar support adjustment Button for lumbar support for driver’s seat Motor for longitudinal adjustment of lumbar support for driver’s seat Motor for lumbar support for driver’s seat height Switch for lumbar support for front passenger seat Motor for longitudinal adjustment of front seat passenger side Motor for lumbar support, front passenger seat height
F3	5A	Onboard supply control unit Battery monitor control unit
F4	30A	ABS control unit (MK60 valves)
F5	15A	Mechatronic unit for dual clutch gearbox Selector lever sensor control unit
F6	5A	Steering column control unit
F7	30A	Onboard supply control unit (left turn signal, left dipped beam, left main beam, left fog lamp, right headlight for adaptive lighting, front right parking light, right daytime running light, rear left parking light, right brake light , right fog light)
F8	20A	Windscreen and rear window washer pump Rear window wiper motor Central locking for rear right and left doors, fuel filler flap, rear window lock
F9	5A	Mobile phone amplifier Telephone holder
F10	5A	Terminal 30 supply relay Engine control unit (only for models with diesel engine)
F10	10A	Main relay Engine control unit (only for models with petrol engine)
F11	–	–
F12	5A	Data bus diagnostic interface
F13	25A/30A	Engine control unit
F14	20A	Diesel: Fuel pressure regulating valve Fuel metering valve Petrol: Ignition coil 1 with output stage Ignition coil 2 with output stage Ignition coil 3 with output stage Ignition coil 4 with output stage
F15	5A	Diesel: Glow plug control unit
F15	10A	Petrol: Lambda probe heater Lambda probe 1 heater after catalytic converter
F16	30A	Onboard supply control unit (right turn signal, right dipped beam, right main beam, right fog lamp, left headlight for adaptive lighting, front left parking light, left daytime running light, rear right parking light, left brake light , right reversing light, license plate light, left fog light)
F17	15A	Horn relay High tone signal Low tone signal
F18	30A	Information electronics control unit 1 Radio Voltage stabilizer Digital sound system control unit
F19	30A	Wiper motor control unit
F20	20A	Petrol: Fuel pressure regulating valve
F21	10A	Diesel: Lambda probe heater
F21	25A	Petrol: Fuel pressure regulating valve
F22	5A	Clutch pedal position sender
F23	10A	Diesel: Charge pressure control solenoid valve Exhaust gas recirculation cooler changeover valve Air mass meter
F24	10A	Diesel: Fuel pump relay Radiator fan control unit Low heat output relay High heat output relay Exhaust gas recirculation cooler pump Petrol: Relay for additional coolant pump Radiator fan control unit Engine power supply relay Charge pressure control solenoid valve Canister solenoid valve 1 Camshaft timing valve 1 Turbocharger bypass valve Intake manifold flap valve Oil pressure regulating valve
F25	40A	ABS control unit (MK60 ESP pump)
F26	30A	Fuse 34 on fuse holder C Fuse 35 on fuse holder C
F27	50A	Diesel: Glow plug control unit Glow plugs 1~4
F28	50A	Fuse for trailer terminal 30 (Australia only)
F29	30A	Thermal fuse 1 for driver’s seat adjustment mechanism Thermal fuse 1 for front passenger’s seat adjustment mechanism
F30	50A	Terminal 15 supply relay Fuse supply: -SC9- bis -SC16-, -SC25-, -SC26-, -SC27-
A1		Main relay Terminal 30 voltage supply relay
A2		Relay for voltage supply for engine electronics Jumper, glow plug control unit

Fuse Box Diagram (Type 2)

Assignment of the fuses in the engine compartment (type 2)

№	Amps	Function / component
F1	15A	Mechatronic unit for dual clutch gearbox Selector lever
F2	30A/40A	ABS control unit (MK60 valves)
F3	15A	Horn relay High tone signal Low tone signal
F4	40A	Voltage stabilizer Fuse supply -SC28- to -SC33- (only for vehicles with start / stop system)
F5	5A	Onboard supply control unit Battery monitor control unit
F6	30A	Onboard supply control unit (right turn signal, right dipped beam, right main beam, right fog lamp, left headlight for adaptive lighting, front left parking light, left daytime running light, rear right parking light, left brake light, right reversing light, license plate light, left fog light)
F7	20A	Front and rear windscreen washer pump
F8	30A	Onboard supply control unit (left turn signal, left dipped beam, left main beam, left fog lamp, right headlight for adaptive lighting, front right parking light, right daytime running light, rear left parking light, right brake light, right fog light)
F9	10A	Electric lumbar support adjustment Button for lumbar support for driver’s seat Motor for longitudinal adjustment of lumbar support for driver’s seat Motor for lumbar support for driver’s seat height Switch for lumbar support for front passenger seat Motor for longitudinal adjustment of front seat passenger side Motor for lumbar support, front passenger seat height
F10	5A	Diesel: Glow plug control unit
F10	10A	Petrol: Lambda probe heater Lambda probe 1 heater after catalytic converter
F11	5A	Steering column control unit
F12	5A	Mobile phone amplifier Telephone holder
F13	5A	Diesel: Terminal 30 supply relay Engine control unit
F13	5A/10A	Petrol: Main relay Engine control unit
F14	30A	Diesel: Engine control unit
F14	15A/25A	Petrol: Engine control unit
F15	5A	Data bus diagnostic interface
F16	10A	Diesel: Charge pressure control solenoid valve Exhaust gas recirculation cooler changeover valve Air mass meter Petrol: Relay for additional coolant pump Coolant circuit solenoid valve Coolant circulation pump
F17	20A	Petrol (not 2.5L): Fuel pressure regulating valve
F17	10A	Petrol (2.5L): Fuel metering valve
F18	10A	Diesel: Lambda probe heater
F18	25A	Petrol: Fuel pressure regulating valve
F19	30A	Information electronics control unit 1 Radio Voltage stabilizer Digital sound system control unit
F20	5A	Clutch pedal position sender
F21	40A	Reducing agent heating control unit
F22	40A	Wiper motor control unit
F23	10A	Diesel: Fuel pump relay Radiator fan control unit Low heat output relay High heat output relay Exhaust gas recirculation cooler pump Petrol (not 2.5L): Relay for additional coolant pump Radiator fan control unit Engine power supply relay Charge pressure control solenoid valve Canister solenoid valve 1 Camshaft timing valve 1 Turbocharger bypass valve Intake manifold flap valve Oil pressure regulating valve Petrol (2.5L): Radiator fan control unit Engine power supply relay Exhaust gas flap block Charge pressure control solenoid valve Canister solenoid valve 1 Turbocharger bypass valve Intake manifold flap valve
F24	10A/20A	Diesel: Fuel pressure regulating valve Fuel metering valve Petrol (not 2.5L): Ignition coil 1 with output stage Ignition coil 2 with output stage Ignition coil 3 with output stage Ignition coil 4 with output stage Petrol (2.5L): Camshaft timing valve 1 Exhaust camshaft timing valve 1 Oil pressure regulating valve
F25	30A	Driver door control unit Rear left door control unit
F26	30A	Front passenger door control unit Rear right door control unit
F27	40A/50A	Terminal 15 supply relay Fuse supply: -SC9- bis -SC16-, -SC25-, -SC26-, -SC27-
F28	5A	Diesel: Glow plug control unit Glow plugs 1~4
F28	30A	Petrol (2.5L): Ignition coil 1 with output stage Ignition coil 2 with output stage Ignition coil 3 with output stage Ignition coil 4 with output stage Ignition coil 5 with output stage
F29	30A	Thermal fuse 1 for driver’s seat adjustment mechanism Thermal fuse 1 for front passenger’s seat adjustment mechanism
F30	40A	ABS control unit (MK60 ESP pump)
A1		Relay for voltage supply for engine electronics Jumper, glow plug control unit
A2		Main relay Terminal 30 voltage supply relay