How do I troubleshoot the non-responsive Audi MMI control buttons?

My Audi's multimedia interface (MMI) control buttons have suddenly stopped responding. How can I troubleshoot and fix this issue?

First, try resetting the MMI system by pressing and holding the top right button on the control panel for 10 seconds. If that doesn't work, check the fuse for the MMI system and replace if necessary. If the issue persists, it may be a hardware problem and you should consult with a certified Audi technician.

One common cause of unresponsive MMI control buttons is a dirty or loose connection. Try cleaning the buttons and surrounding area with a gentle cleaning solution and a soft cloth. If the problem persists, check for loose connections and tighten any screws or wires that may be causing the issue.