BMW Calibration of Steering angle sensor, using Launch Diag X431, that calibration has to be done after replacement or maintenance of Steering power rack, steering angle sensor or steering module. If is not calibrated DSC traction is not active and DSC warning lights comes On. For any BMW maintenance questions let me know. I’ll be more than happy to help you. See the video below 👇 and let me know if you have any question.