See also:

Rear
Rear Operation similar to front seat heating, without temperature distribution. ...

Deleting all stored programs
Press the two outer memory buttons for approx. 20 seconds until the LED flashes rapidly. All stored programs are deleted. The programs cannot be deleted individually ...

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 ...