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How to troubleshoot a brake light issue on the Audi A4?

I've been experiencing issues with the brake lights on my Audi A4. They seem to randomly stop working, but then start working again after I've restarted the car. What could be causing this and how can I fix it?

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Check the brake light switch first as it is a common culprit for faulty brake lights. If it seems to be working properly, also check the wiring and connections to ensure there are no loose or damaged wires. It's also a good idea to check the fuse for the brake lights.

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Another possible issue could be a malfunctioning brake light relay. This can cause inconsistent brake light behavior as well. Have a mechanic check the relay if all other components seem to be working properly.

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