Audi Q3 (8UB/8UG) (2011-2018) Fuse Box Location & Diagram

Welcome to our guide on the first-generation Audi Q3 (8UB/8UG), produced between 2011 and 2018. Here, we’ll explore the fuse box diagrams for 2011, 2012, 2013, 2014, 2015, 2016, 2017 and 2018 year, learn where they are located in the car, and understand the purpose of each fuse and relay. Join us as we break down the essential components that power the Audi Q3 and make it a remarkable driving experience!

Cockpit Fuse Panel

Fuse Box Location

The fuses can be found situated behind the storage compartment. To access them, simply open the storage compartment and press inward on both the left and right brackets. Then, pivot the compartment downwards until it reaches its fully opened position.

Main Fuse Box Diagram

Below is a detailed breakdown of the fuse allocation within the Audi Q3 cockpit. The table presents a comprehensive overview of the fuses and their respective functions.

No.AmpDescription
110ALeft LED headlight control unit 1
210ARight LED headlight control unit 1
35AGlove 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)
45AFront camera for driver assistance systems
510A2011-2013: Power module for left headlight
55A2014-2018: Power module for left headlight
610A2011-2013: Power module for right headlight
65A2014-2018: Power module for right headlight
77.5AControl unit el. steering column lock
87.5AEntry and start authorization control unit
95AFront passenger airbag deactivation warning lamp
Airbag control unit
1010A2011-2013: Four-wheel drive control unit
11
125AMechatronic unit for dual clutch gearbox
 Selector lever sensor control unit
135AOil 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
147.5AStarter relay 1
Starter relay 2
147.5ALight 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
1510ACrankcase ventilation heater (diesel)
Air mass meter (petrol)
1510AControl 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
165AParking aid control unit 
Lane change assist control unit 
Control unit 2 for lane change assist
175AReversing camera control unit
185ARadio
TV tuner
Internet access control unit 
Chip card reader control unit
195AOnboard supply control unit 
Voltage stabilizer
Engine control unit
205AABS control unit
Air conditioning control unit
Climatronic control unit 
Interface control unit for vehicle positioning system
21
2210AInterior sensor
Hazard warning system
2310ALight switch
Rain and light sensor
Electromechanical parking brake warning lamp
16-pin connector (diagnostic connector)
Front roof module
2410ARelay for additive dosing system
2520AFuse 4 on fuse holder C
Fuse 5 on fuse holder C
Fuse 6 on fuse holder C
2615ARear window wiper motor
2730/40AStarter relay 1
Starter relay 2
2815AInformation electronics control unit 1
Radio (only for vehicles with radio)
287.5AInformation electronics control unit 1 (only for vehicles with MMI)
2915AFuse 18 on fuse holder C
Fuse 17 on fuse holder C
305ACD change
315ADisplay for dash panel insert
325AControl unit in dash panel insert
3310ARelay for interior rearview mirror with automatic anti-dazzle function
3410ARear left door control unit (central locking, rear left door)
Rear right door control unit (central locking, rear right door) (up to October 2012)
3510ADriver door control unit (central locking, front left door)
Front passenger door control unit (central locking, front right door) (up to October 2012)
3620ASocket
Cigar lighter
3720A12V socket 2
12V socket
3815APower supply relay 2
39
4015ATrailer detection control unit
4120ATrailer detection control unit
4220ATrailer detection control unit
4320AHeadlamp cleaning relay
Headlight cleaning pump
4430AHeated rear window relay
Heated rear window
4520AElectromechanical parking brake control unit
4620/30A2011-2012:
Rear left door control unit 
Rear right door control unit (up to October 2012)
2014-2018:
Relay for trailer voltage supply
4715/30A2011-2012: Driver door control unit
from 2013: Four-wheel drive control unit
4830A2011-2012: Front passenger door control unit
4925AFuel pump relay
Fuel pump control unit (only for vehicles with petrol engine)
5040AX-terminal unloading relay
Fresh air blower control unit 
Fresh air blower
5120AElectromechanical parking brake control unit
5220AOnboard supply control unit (footwell lighting, terminal 30G, terminal 58d, luggage compartment lighting)
Hazard warning lamp
Fuel pump relay
5330AClimatronic control unit (Heated front seat with automatic air conditioning)
Control unit for heated front seat (Heated front seat with manual climate control)
5420ASliding sunroof control unit
5520ASunroof blind control unit
5620AElectronic damping control control unit
5710ASpecial vehicle control unit (only for vehicles with driving aids)
5710APower supply relay 1 (only for vehicles for driving schools)
585APower supply relay 2 (only for driving school vehicles)
59
60

Thermal Fuse Box Diagram

Here is an extensive breakdown of the thermal fuse allocation within the Audi Q3 cockpit.

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

Relay Box (No.1) Diagram

Below is a comprehensive breakdown of the relay allocation within the Audi Q3 cockpit.

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

Relay Box (No.2) Diagram

Presented below is the relay box allocation on the onboard supply control unit.

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

Engine Compartment Fuse Panel

Fuse Box Location

The fuse box is situated on the right side of the engine compartment. To access the fuse cover, simply slide both the left and right sliders forward. This action will allow you to open the fuse cover and access the fuses inside.

Fuse Box Diagram (2011-2012)

Here is a comprehensive breakdown of the fuse allocation within the engine compartment of the Audi Q3, spanning from August 2011 to October 2012. The following table presents detailed information about the fuses and their corresponding functions during this specific period.

No.AmpDescription
SB140AVoltage stabilizer
Fuse supply for Main Box fuses from 28 to 33 (only for vehicles with Start/Stop system)
SB210AElectric 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
SB35AOnboard supply control unit 
Battery monitor control unit
SB430AABS control unit (MK60 valves)
SB515AMechatronic unit for dual clutch gearbox
Selector lever sensor control unit
SB65ASteering column control unit
SB730AOnboard 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)
SB820AWindscreen and rear window washer pump
Rear window wiper motor
Central locking for rear right and left doors, fuel filler flap, rear window lock
SB95AMobile phone amplifier
Telephone holder
SB105ATerminal 30 supply relay
Engine control unit (only for models with diesel engine)
SB1010AMain relay
Engine control unit (only for models with petrol engine)
SB11
SB125AData bus diagnostic interface
SB1325/30AEngine control unit
SB1420ADiesel:
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
SB155ADiesel: Glow plug control unit
SB1510APetrol:
Lambda probe heater 
Lambda probe 1 heater after catalytic converter
SB1630AOnboard 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)
SB1715AHorn relay
High tone signal 
Low tone signal
SB1830AInformation electronics control unit 1
Radio
Voltage stabilizer
Digital sound system control unit
SB1930AWiper motor control unit
SB2020APetrol: Fuel pressure regulating valve
SB2110ADiesel: Lambda probe heater
SB2125APetrol: Fuel pressure regulating valve
SB225AClutch pedal position sender
SB2310ADiesel:
Charge pressure control solenoid valve 
Exhaust gas recirculation cooler changeover valve
Air mass meter
SB2410ADiesel:
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
SB2540AABS control unit (MK60 ESP pump)
SB2630AFuse 34 on fuse holder C
Fuse 35 on fuse holder C
SB2750ADiesel:
Glow plug control unit
Glow plugs 1~4
SB2850AFuse for trailer terminal 30 (Australia only)
SB2930AThermal fuse 1 for driver’s seat adjustment mechanism
Thermal fuse 1 for front passenger’s seat adjustment mechanism
SB3050ATerminal 15 supply relay
Fuse supply for main box fuses: No.9, No.16, No.25, No.26, No.27
A1Main relay
Terminal 30 voltage supply relay
A2Relay for voltage supply for engine electronics
Jumper, glow plug control unit

Fuse Box Diagram (from October 2012)

Below is a comprehensive breakdown of the fuse allocation within the engine compartment of the Audi Q3, starting from October 2012. The following table presents detailed information about the fuses and their corresponding functions during this specific period.

No.AmpDescription
SB115AMechatronic unit for dual clutch gearbox
Selector lever
SB230/40AABS control unit (MK60 valves)
SB315AHorn relay
High tone signal 
Low tone signal
SB440AVoltage stabilizer
Main Box Fuse supply from No.28 to No.33 (only for vehicles with Start/Stop system)
SB55AOnboard supply control unit 
Battery monitor control unit
SB630AOnboard 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)
SB720AFront and rear windscreen washer pump
SB830AOnboard 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)
SB910AElectric 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
SB105ADiesel:
Glow plug control unit
SB1010APetrol:
Lambda probe heater 
Lambda probe 1 heater after catalytic converter
SB115ASteering column control unit
SB125AMobile phone amplifier
Telephone holder
SB135ADiesel:
Terminal 30 supply relay
Engine control unit
SB135/10APetrol:
Main relay
Engine control unit
SB1430ADiesel:
Engine control unit
SB1415/25APetrol:
Engine control unit
SB155AData bus diagnostic interface
SB1610ADiesel:
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
SB1720APetrol (not 2.5L): Fuel pressure regulating valve
SB1710APetrol (2.5L): Fuel metering valve
SB1810ADiesel:
Lambda probe heater
SB1825APetrol: Fuel pressure regulating valve
SB1930AInformation electronics control unit 1
Radio
Voltage stabilizer
Digital sound system control unit
SB205AClutch pedal position sender
SB2140AReducing agent heating control unit
SB2240AWiper motor control unit
SB2310ADiesel:
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
SB2410/20ADiesel:
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
SB2530ADriver door control unit 
Rear left door control unit
SB2630AFront passenger door control unit 
Rear right door control unit
SB2740/50ATerminal 15 supply relay
Main Box Fuse supply: No.9, No.16, No.25, No.26, No.27
SB285ADiesel:
Glow plug control unit
Glow plugs 1~4
SB2830APetrol (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
SB2930AThermal fuse 1 for driver’s seat adjustment mechanism
Thermal fuse 1 for front passenger’s seat adjustment mechanism
SB3040AABS control unit (MK60 ESP pump)
A1Relay for voltage supply for engine electronics
Jumper, glow plug control unit
A2Main relay
Terminal 30 voltage supply relay

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