See also:

Switching on/off manually
Press the button. On: the LED lights up. Off: the LED goes out. The PDC is shown on the Control Display. Switch on the backup camera via the iDrive. ...

Start/Stop button
The concept Pressing the Start/Stop button switches the ignition on or off and starts the engine. Automatic transmission: The engine starts if the brake is depressed while pressing the Start/ ...

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