How can I troubleshoot a malfunctioning MMI system in my Audi A6?

I recently purchased a used Audi A6 and the MMI system keeps freezing and crashing. It's a major inconvenience as I rely on the system for navigation and entertainment. How can I fix this issue?

First, try resetting the MMI system by pressing the 'Setup' button and the MMI control button simultaneously for 10 seconds. If that doesn't work, it could be a faulty control unit and you may need to replace it.

Check for any software updates or recalls for the MMI system. Sometimes these can solve common issues and are often free to install at the dealership.

If the MMI system continues to malfunction, it may be a wiring issue. Have a professional mechanic inspect the wiring harness to ensure everything is properly connected and there are no damaged wires.