See also:

Switching on/off manually
Press the button. On: the LED lights up. Off: the LED goes out. If Top View is displayed, switch on the backup camera via the iDrive. ...

Switch off the engine duringlonger stops
Switch off the engine during longer stops, e.g., at traffic lights, railroad crossings or in traffic congestion. Auto Start/Stop function The Auto Start/Stop function of your vehicle automatically ...

The concept
The automatic engine start-stop function helps save fuel. The system switches off the engine during a stop, e. g., in a traffic congestion or at traffic lights. The ignition remains switched on. ...