Problem: Audi A4 window not working
Solution: if you can hear the motor running but the window fail do open or close (or you hear funny sounds when it does this) you are lucky. The window motor could be just fine, and the window regulator or window regulator plastics could be broke, and it needs to be replaced.
This tutorial is for a 2004 Audi A4 but will work on any B6 Audi A4. Just take your time, and you’ll be able to fix it. No need to pay $300 for this one.
You can find really cheap Audi A4 Regulators here