See also:

Radar sensor
Position Radar sensor Dirty or covered sensor A dirty or covered sensor may hinder the detection of vehicles. ▷ If necessary, clean the radar sensor. Remove layers of snow and ice care ...

Settings
Vehicle Equipment ...

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, ...