2012 Q5 trailer wiring problem - Audi Forums
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post #1 of 1 (permalink) Old 10-19-2011, 06:48 AM Thread Starter
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2012 Q5 trailer wiring problem

Appeal for help. Trailer lights (non-LED) work fine on neighbor's Toyota and Suburban. On my 2012 Q5 (factory-installed hitch), the driver displays says the trailer lights are out and then the trailer blinker/brake lights won't function. Took the car into the dealer and their mocked-up trailer lights work fine. They claim the resistance in my existing trailer bulbs aren't sufficient to be detected by the Audi control module. They also claim the VCDS code are correct. Their diagnosis is that the car is fine...

Can't pull my trailer without lights... suggestions appreciated!
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