Drive-off assistant

WARNING: This page does not describe the selected car, but rather 45 other vehicles, including the 2016 BMW M5, 2016 BMW 550i xDrive, 2016 BMW 550i, 2016 BMW 535i xDrive, and 2016 BMW 535i. However, it is still accessible from the selected car via links, so may be relevant.

The braking pressure required to prevent the vehicle from moving is retained during the switch from brake to accelerator pedal when starting off on a hill (up to approximately 2 seconds). Here, the drive-off assistant prevents the vehicle from rolling in the following situations:

uphill in a forward gear
uphill in reverse gear

Here, the brake pressure required to stop the vehicle is maintained. The gradient is picked up by the longitudinal acceleration sensor in the DSC control unit. The required engine torque is calculated based on the slope angle of the road gradient. After detection of the wish to drive off, the brake pressure is reduced as soon as the applied engine torque is sufficient to move the vehicle in the desired direction of travel. If the parking brake is operated, the drive-off assistant is disabled. If there is no wish to drive off within approx. 2 seconds after releasing the brake pedal, the drive-off assistant is also disabled.