2026 Audi Q3 Fuses and Fuse Box User Guide
This blog will help you comprehend the 2026 Audi Q3 fuses and fuse box by discussing their locations and functions. It explains how to identify fuse types, ratings, and circuits. With this critical knowledge, you can ensure that your vehicle’s electrical components are properly protected and running smoothly.
Video: Audi Q3 Fuses and Fuse Box
Fuses and Bulbs
Fuses
Replacing Fuses
Fuses are installed in various locations in your vehicle. The following information only lists fuses that you can change yourself. To have other fuses changed, contact an authorized Audi dealer or authorized Audi Service Facility. The following table does not list fuse locations that are not used. A fuse that has blown will have metal strips that have burned through.
The fuses are located on the left side of the engine compartment (), or behind the storage compartment on the left side of the cockpit @) (left-hand drive vehicles) or the glove compartment @) (right-hand drive vehicles).
- Switch the ignition and all electrical equipment off.
- Check the table that follows to see which fuse belongs to the affected equipment.
- Remove the screwdriver from the vehicle tool kit 2 page 254.
- Remove the appropriate cover.
- Remove the clamp from the rear side of the fuse cover.
- Remove the fuse using the clip.
- Replace the blown fuse only with a fuse that has the same amp rating.
- Install the cover.
Fuse color identification
| Colour | Rating in amperes |
| black | 1 |
| grey | 2 |
| purple | 3 |
| pink | 4 |
| light brown | 5 |
| brown | 7.5 |
| red (narrow) | 10 |
| light blue | 15 |
| yellow | 20 |
| white or transparent | 25 |
| light green | 30 |
| blue-green | 35 |
| orange | 40 |
| red (wide) | 50 |
Warning
Do not repair fuses and never replace a blown fuse with one that has a higher amp rating.
This can cause damage to the electrical system and increase the risk of fire.
CAUTION
If a newly replaced fuse blows again after a short time, the electrical system must be checked by a qualified workshop as soon as possible.
Note
Some of the items of equipment listed in the tables below are only fitted on certain models or are optional extras.
Fuses in engine compartment
| No. | Electrical equipment |
| 3 | Drive system control unit |
| 4 | Engine components, engine start |
| 5 | Engine components |
| 6 | Brake light sensor |
| 7 | Engine components |
| 8 | Oxygen sensors |
| 9 | Engine components |
| 10 | Fuel pump |
| 13 | Gearbox oil pump |
| 15 | Horn |
| 16 | Engine components, engine electronics |
| 17 | Electronic stabilisation control (ESC), drive system control unit |
| 18 | Battery monitoring control unit, diagnos- tic interface |
| 19 | Control unit for wipers |
| 20 | Anti-theft warning system, garage door opener |
| 21 | Automatic gearbox |
| 22 | Drive system control unit |
| 23 | Engine start |
| 31 | Engine components, injectors |
| 35 | Air conditioner |
| 36 | Left headlight |
| 37 | Auxiliary heating |
| 38 | Right headlight |
Fuses – dash panel
| No. | Electrical equipment |
| 1 | Emission control |
| 2 | Seat electronics (front seats) |
| 5 | Diagnostic interface |
| 6 | Safety lock for ignition key, selector lever (automatic gearbox) |
| 7 | Auxiliary heater, A/C control console, tyre pressure loss indicator |
|
8 |
Headlight range control, interior monitor, background lighting, light switch, control unit for roof electronics, emergency call module, parking brake, diagnostic connec- tion, light/rain sensor, particulate sensor |
| 9 | Steering column electronics |
| 10 | Infotainment system, MMI control dial |
| 11 | Control unit for vehicle electrical system |
| 12 | Infotainment system |
| 13 | Belt tensioners (driver’s side), airbag con- trol unit |
| 14 | Air conditioner blowers |
| 15 | Electronic steering column lock |
| 16 | Audi phone box, electronic toll collection system (ETC) |
| 17 | Instrument cluster, emergency call and communication control unit |
| 18 | Reversing camera, surround view cameras |
| 19 | Control unit for convenience access and start authorisation |
| 20 | Emission control, fuel leak diagnostics |
| 21 | Steering column electronics |
| 24 | Control unit for vehicle electrical system |
|
25 |
Door control unit (driver’s side), electric window motor (rear left), door control unit (rear left) |
| 26 | Control unit for vehicle electrical system |
| 27 | Control unit for vehicle electrical system |
| 29 | Control unit for roof electronics, control unit for vehicle electrical system |
| 30 | 48 V battery |
| 32 | Driver assist systems, camera systems |
| 33 | Seat electronics (passenger’s seat), control unit for roof electronics |
| 34 | A/C components, parking brake, reversing light, engine sound control unit |
|
35 |
Air quality sensor, diagnostic connection, centre console switch module, interior mirror, headlight range control, instru- ment lighting |
|
39 |
Door control unit (front passenger’s side), electric window motor (rear right), door control unit (rear right) |
| 40 | 12-volt socket |
| 41 | Belt tensioners (front passenger’s side) |
| 42 | Control unit for vehicle electrical system |
| 44 | Control unit for four-wheel drive |
| 45 | Seat electronics (driver’s side) |
| 47 | Rear window wiper |
| 49 | Engine start, clutch position sensor |
| 52 | Suspension control |
| 53 | Rear window heating |
| 54 | Towing bracket (left lights) |
| 55 | Trailer recognition control unit |
| 56 | Towing bracket (right lights) |
| 57 | Electrical socket for towing bracket |
Bulbs
Changing bulb:
Audi recommends having bulbs replaced by a technician or an authorized Audi dealer or authorized Audi Service Facility in cases of doubt. These have the correct tools and replacement parts as well as the required technical knowledge.
Useful Links:
2024 Audi Q3 Specs, Price, Features, Mileage
2026 Audi Q3 Keys and Smart Key User Guide
2026 Audi Q3 Alarm System / Security User Guide