How to reset the audio system on my Audi A3?

I am unable to change the settings on my audio system in my Audi A3. Every time I try to make a change, it goes back to the default settings. How can I reset the audio system to fix this issue?

Have you tried disconnecting the battery for a few minutes and then reconnecting it? This can often reset the audio system and fix any issues.

Another option is to check the fuse for the audio system. If it's blown, replace it and see if that solves the problem.