How to troubleshoot electric window issues on an Audi 80?

My Audi 80's electric windows won't roll up or down, even when the car is turned off. What could be causing this and what steps should I take to fix it?

The issue is most likely related to the window switch. You can try cleaning the switch with a specialized electrical cleaner or replacing it altogether. Also check the fuse and wiring for any damage.

Another possibility is a faulty window motor. You can test this by applying direct power to the motor and seeing if it works. If not, the motor may need to be replaced.

Sometimes the issue can also be caused by a loose or broken track or guide for the window. Check these components and tighten or replace them if necessary.