How to reset the MMI system of Audi A4?

I am experiencing issues with my Audi A4 MMI system like slow response time and unresponsive touch screen. How can I reset it to its factory settings? Is it possible to do it without losing stored preferences and data?

To reset the MMI system of Audi A4, simply hold down the CAR and SETUP buttons for at least 10 seconds. This will reboot the system and should fix any performance issues. However, keep in mind that this will also reset all your stored preferences and data, so it's recommended to back them up beforehand.

If your Audi A4 has a physical key, you can try disconnecting the car battery for a few minutes and reconnecting it. This will also reset the MMI system but it may cause some other electrical issues, so it's a good idea to have a professional check it afterwards.

There is also a hidden MMI reset menu that can be accessed by pressing CAR, SETUP, and BACK buttons together. From there, you can choose to reset specific settings or perform a complete factory reset. Just be careful not to change any other settings as it may affect your car's performance.