What causes the tail lights on the Audi Q7's rear hatch to not light up?
2 Answers
Audi Q7's rear hatch tail lights not lighting up may be due to a burnt-out bulb inside the tail light. Here are other possible reasons: Blown fuse: If upon opening the tail light you find that the bulb inside is fine, then it's likely that the car's fuse has blown. A damaged fuse is also a direct cause of tail light failure. First, check to confirm that the bulb isn't burnt out or that the main lamp socket isn't damaged. The probability of basic wiring issues or a blown fuse is relatively low. If the lamp socket is confirmed to be damaged, check the wiring last. Burnt-out tail light bulb: If a car's tail light isn't lighting up, it's generally due to poor contact, a blown fuse, or possibly a burnt-out bulb. It's recommended to visit a repair shop for servicing. Tail light failure can be caused by a burnt-out bulb on one hand, or on the other hand, by short circuits, breaks, or blown fuses in the tail light's control circuit. Of course, it could also be due to a malfunctioning control switch.
Last time my Q7 taillights also went on strike, after much troubleshooting I found three possible causes. Either the bulb burned out - the Q7 uses dual-filament bulbs where one filament can fail while the brake light still works, complete outage means the bulb's dead; or wiring got frayed at the trunk hinge area - this spot wears easily from repeated opening/closing; or it could be a fuse issue - look for the 15A mini fuse labeled 'Taillights' in the fuse box under the driver's seat. If new bulbs don't fix it, test the socket with a circuit tester. Pro tip: always turn on hazard lights before repairing in rain - I almost got rear-ended fixing taillights on the highway at night.