Integrated Owner's Manual in the vehicle

See also:

Tire inflation pressure X6 xDrive35i
...

For 520i and 528i: Check oil level
The concept The oil level is monitored electronically during driving and shown on the Control Display. If the oil level reaches the minimum level, a check control message is displayed. Displayi ...

Activating HDC
Press the button; the LED above the button lights up. ...