See also:

Electronic brake-force distribution
The system controls the brake pressure in the rear wheels to ensure stable braking behavior. ...

Switching on/off manually
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. ...

Switching on/off
Press the button. ...