Low beams
Switch position 
with
the ignition switched
on: the low beams light up.
See also:
Vehicle information
Owner's Manual
Computer
Vehicle
...
xDrive
xDrive is the all-wheel-drive system of your vehicle.
Concerted action by the xDrive and DSC
further optimize traction and driving dynamics.
The xDrive all-wheel-drive system variably distribut ...
Initialization after a power failure
After a power failure, it is only possible to raise
the roof, if necessary.
Have the system initialized by your service center. ...