How to reset the MMI interface on my Audi A3?

I accidentally changed some settings on my MMI interface and now it's not working properly. How can I reset it back to its factory settings?

To reset your MMI interface on your Audi A3, you will need to access the hidden service menu. Turn on the ignition and hold down the 'car' and 'setup' buttons simultaneously until the MMI screen turns on. Select the 'reset MMI' option from the menu.

The MMI reset process may vary depending on the model and year of your Audi A3. Consult your owner's manual for specific instructions for your vehicle.