See also:

Controls
1 Change entertainment sources 2 Volume, on/off 3 Programmable memory buttons or radio station buttons 4 Change station/track 5 Eject CD/DVD 6 CD/DVD drive 7 Change wave band ...

Activating HDC
Press the button; the LED above the button lights up. ...

Automatic deactivation during forward travel
The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...