See also:

Multi-channel playback, surround
Setting multi-channel playback, surround 1. "CD/Multimedia", "Radio" or "Settings" 2. "Tone" 3. "Surround" Surround When surround is activate ...

Switching off automatically
System switches off: above approx. 9 mph/ 15 km/h. Switch on the system again if necessary. ...

Tire inflation pressure values over100 mph/160 km/h
X3 28i X3 35i ...