See also:

Capacities
...

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 ...

Releasing the parking brake manually
In the event of an electrical power loss or electrical malfunction, you can release the parking brake manually. Secure the vehicle against rolling Before releasing the parking brake manually, ...