How to troubleshoot potential electrical issues in an Audi?

I recently purchased a used Audi and I've noticed some potentially concerning electrical issues. How can I troubleshoot these issues at home to avoid costly repairs at the dealership?

First and foremost, make sure to check all fuses related to the electrical system. These are often the culprit for any electrical issues in Audis.

Another common cause of electrical issues in Audis is a faulty battery. If you suspect this could be the issue, take it to a reputable mechanic to have it tested and replaced if necessary.

It's also important to regularly clean and inspect the battery terminals, as build up of corrosion can lead to electrical issues. Make sure to use a battery terminal cleaner and brush when doing so.