How do I troubleshoot my Audi A5's MMI touchscreen?

I'm experiencing issues with my Audi A5's MMi touchscreen. The display is unresponsive and I'm unable to access any features on my car's media system. What steps can I take to troubleshoot and potentially fix this issue?

First, try resetting the MMi system by holding down the central MMI button for 10 seconds. If that doesn't work, check for any software updates for your car's system. You can also try recalibrating the touchscreen in the MMI menu.

You may have a faulty touchscreen panel that needs to be replaced. Contact your local Audi dealership for support and potential warranty coverage.