See also:

Office
...

All around the headliner
1 Emergency Request 2 Glass sunroof, powered 3 Indicator lamp, front passenger airbag 4 Reading lamps 5 Interior lamps ...

Enabling DVD system
The DVD system can be enabled via iDrive. 1. "Settings" 2. "Allow rear control" 3. "Rear DVD system active" Rear DVD system active ...