How to reset the MMI system in Audi A6?

I recently encountered a problem with my MMI system in my Audi A6. It seems to be frozen and I cannot access any of the menus or functions. How can I reset the MMI system?

First, try holding down the power button for at least 10 seconds. If that doesn't work, you can try resetting the system by disconnecting the car battery for a few minutes and then reconnecting it. If the issue persists, it may be a more serious problem and you should bring your car to an Audi dealership for further assistance.

You can also try resetting the MMI system by simultaneously pressing the buttons for Menu, Navigation, and Info. If this doesn't work, you may need to bring your car to an Audi specialist who can properly diagnose and fix the issue.