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e90 dsc problems
I have had similar probles due to alternator and voltage regulator.
You can try few things before new steering angle sensor:
1) start the car and turn the wheel couple of times from at most position from left to right and back (meaning from end to end). This should recalibrate the sensor, some say.
2) Go and check somewhere the alternator and voltage regulator. If there are low voltage or voltage is going up and down DSC is first to react.
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