See also:

Adjusting volume
Turn knob 1next to the CD/DVD player until the desired volume is obtained. You can also adjust the volume with buttons on the steering wheel. ...

Interior motion sensor
For the sensor to function properly, the windows and glass sunroof/panoramic glass sunroof must be closed. ...

The concept
The system is functional at speeds beginning at approx. 20 mph/30 km/h. The speed specified using the lever on the steering column is maintained. The system brakes on downhill gradients if engin ...