See also:

Problems with the SmartKey
Problem Possible causes/consequences and Solutions You cannot lock or unlock the vehicle using the SmartKey. The SmartKey battery is discharged or nearly discharged. - ...

Reset function
You can reset COMAND to the factory settings. Amongst other things, this will delete all personal data (e.g. station presets, address book entries, entries in the destination memory and in the ...

Switching to audio CD, audio DVD or MP3 mode
Insert a CD/DVD. The Rear Seat Entertainment System loads the inserted disc. Select Disc in the menu using the buttons on the remote control and press the button to confirm. The corresp ...