How to fix Audi TT Dashboard Lights Not Working

My Audi TT's dashboard lights stopped working suddenly, how do I troubleshoot and fix this issue?

First check the fuse for the dashboard lights and see if it needs to be replaced. If that doesn't fix the issue, it could be a faulty dashboard light switch. Try replacing it and see if that solves the problem.

Make sure the dimmer switch for the dashboard lights is not turned all the way down. If it isn't, there may be a problem with the wiring or bulbs. Consider taking your car to a certified mechanic for further assistance.

The issue could also be caused by a drained battery. Check your battery's voltage with a voltmeter, if it is low, recharge or replace the battery and see if that resolves the problem.