bmw e90 steering angle sensor calibration inpa

Hit F4 and the system will show the general status Install and open INPA diagnostic software (various instructions on forums) BMW INPA 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. Some cars can experience working cruise control, but not showing it on intrument cluster.The steering angle sensor (SAS) is a vital part of the ESC system that measures the steering wheel position angle and rate of turn. If there are still errors in your car, you can erase error memory in INPA, and that would be all. That procedure should calibrate steering angle sensor.Ĭalibration can be done in DIS that will instruct you to do the same thing as above procedure.

You can do it easy way: turn ignition on, turn the wheel all the way left, then, turn the wheel all the way right. Next thing to do is to calibrate steering angle sensor. If you get DSC module coded with errors, something is wrong with your SZL.Īfter coding, errors are still present. That's why you can't find SZL module shown in UIF (User Information Field) in INPA, or in NCS Expert among other modules in E9X cars (in E60, SZL can be accessed directly). The DSC transfers the coding to the steering column switch cluster. So, DSC module must be encoded after replacing the steering column switch cluster. The steering column switch cluster cannot be addressed directly via the BMW diagnosis system. In other wods, for SZL, DSC acts as a gateway to the rest of the system. Important note: SZL communicates via F-CAN bus to the DSC and further via the PT-CAN to the DME/DDE. Order (VO), write it to modules that holds VO (FRM and CAS in my car) You can do coding using NCS Expert and adding option $540 to Vehicle A steering angle of -180°/+180° is detected. Further information such as the absolute steering angle or the steering wheel rotation information is calculated. The steering column switch cluster must detect the steering angle and steering speed information as the basis for calculating various functions in the DSC. That's why we have errors related with DSC. The information is mainly required by the DSC control unit. The steering angle sensor detects the steering angle setting of the steering wheel and is evaluated in the SZL. The steering column switch cluster SZL consists of several components where the steering angle sensor is one of the most important. The electronic steering column switch cluster module contains a processor, the power supply and following interfaces:

Bmw e90 steering angle sensor calibration inpa