Install and open INPA diagnostic software (various instructions on forums) BMW INPA K+CAN diagnostic interface can be used to obtain these data in degrees. Then you need to reset the steering angle sensor so that its straight ahead reading in software corresponds with the physical straight ahead position. When wheel alignment gets done or the actual physical direction the steering is set at, and the steering angle sensor’s last calibration is different enough to cause the DSC (dynamic stability control) ECU confusion in certain conditions.
The steering angle sensor (SAS) is a vital part of the ESC system that measures the steering wheel position angle and rate of turn.