See also:

Distance to back of head: electrical head restraints
The head restraint is automatically repositioned when the shoulder support is adjusted. ...

Switching off automatically
The system switches off and the LED goes out: After approx. 160 ft/50 m when driving forward. Above approx. 22 mph/36 km/h when driving forward. Switch on the system again if necessary. ...

Saying commands
Activating voice activation system1.  Press the button on the steering wheel. 2.  Wait for the acoustic signal. 3.  Say the command.   This symbol on the Control Display and ...