How do I reset the MMI on my Audi A4?

I recently noticed that my MMI system on my Audi A4 is not functioning properly. How can I reset it to its default settings?

One way to reset the MMI is to turn off the engine and then turn it back on after a few seconds. This will often solve any minor software glitches.

Another option is to press and hold the function button, then press the control knob and the return button at the same time.

If those methods don't work, you may need to reset the entire system by disconnecting the car battery for a few minutes.