See also:

xDrive
xDrive is the all-wheel-drive system of your vehicle. The combined effects of xDrive and DSC further optimize the traction and dynamic driving characteristics. The 4-wheel drive system xDrive v ...

Increasing or decreasing vehicle speed
You can specify your desired speed in the range from approx. 4 mph/6 km/h to approx. 15 mph/ 25 km/h using the rocker switch of the cruise control on the steering wheel. You can change the veh ...

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