See also:

The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels. ...

Switching the reception on/off
1. "Navigation" 2. Open "Options". 3. "Receive Traffic Info" ...

Deactivating the system
▷ Press the lever upward or downward twice, arrow 3. ▷ Switch off the ignition. The stored speed is cleared. ...