See also:

Indicator/warning lamps
The indicator lamp flashes: DSC controls the drive forces and brake forces. The indicator lamp lights up: DSC has failed. ...

Safety belt reminder for the driver's and front passenger seat
The indicator lamp flashes or lights up and a signal sounds. Make sure that the safety belts are positioned correctly. The safety belt reminder is active at speeds above approx. 5 mph/8 km/h ...

Audio playback
Selecting the track using the button Press the button repeatedly until the desired track is played. Selecting the track using the iDrive Audio CDs Select the desired track to begin playback. ...