See also:

Malfunction
A Check Control message is displayed. Adaptive light control is malfunctioning or has failed. Have the system checked as soon as possible. ...

The concept
The following can be displayed or operated using the buttons and the thumbwheel on the steering wheel and the display in the instrument cluster: ▷ Current audio source. ▷ Programs ...

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, ...