The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.

See also:
Tire inflation pressures X5 xDrive50i with two rows of seats
...
Deactivating DSC: DSC OFF
When DSC is deactivated, driving stability is reduced
during acceleration and when driving in
bends.
Stabilizing interventions by the Integral Active
Steering system are only performed by the r ...
Adding engine oil
Filler neck
BMW X5
BMW X6
Add a maximum quantity of 1 US quart/1 liter of
oil only after the corresponding message appears
on the Control Display.
Add oil promptly
Add oil within the ne ...
