The MMi is accessed by pressing the CAR and SETUP buttons on the center console at the same time for several seconds, however you may need to activate it first.

 

 

 

Activating the MMi

Hidden menu in MMI high (2G): (Only for Navigation equipped cars)

[07 - Control Head]
[Adaptation - 10] -> Channel 8
change 0 to 1

Use this hidden menu at your own risk.
Caution: Keep away from the "Bootloader"

Hidden menu in MMI Navi Plus (3G): (Only for Navigation equipped cars)

[5F - Information Electr.]
[Adaptation - 10] -> Channel 6
change 0 to 1

Use this hidden menu at your own risk.
Caution: Keep away from the "Bootloader"