I have one tail light out of 4 on the tail gate that does not work. I have changed 2 bulbs and still nothing.

Asked by Jan 21, 2014 at 07:40 PM about the 2007 Audi Q7 3.6 quattro AWD

Question type: Maintenance & Repair

5 Answers


Check for electrical grease corrosion. It is very common and can limit the connection. Inspect your Wiring as Well.

5 of 5 people found this helpful.

happens to me non stop .. i change my rear tail lights probably every 2-3 months.

3 of 3 people found this helpful.

by the way .. no corrosion and have had the wiring checked numerous times.


It is possible it could be a short, open circuit, or frayed wire. In that area the wiring is very small and easily damageable.

1 of 1 people found this helpful.

Also had continual brake/tail light failures. Got advised to change all 4 bulbs together and to only use Audi/bosch bulbs . Did this and no problems since

3 of 3 people found this helpful.

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