See also:

Activating/deactivating the trunk lid opening height restriction
To activate/deactivate the trunk lid opening height restriction: select Vehicle in the main function bar by sliding and turning the COMAND controller and press to confirm. The main are ...

Deactivating
Press and hold the closing button () in the tailgate until you hear two short tones. ...

Parking the vehicle for a long period
If you leave the vehicle parked for longer than four weeks, the battery may be damaged by exhaustive discharge. Connect a trickle charger. You can obtain information about trickle chargers ...