@5W40及各位高手， 请教一个关于宝马E90的问题 kanata2019-07-15 20:27:34
英语写的，就不翻译了，反正大家都看得懂。 非常感谢！
DSC似乎无规律报警，故障灯亮时方向盘转角传感器读数锁定。
请教到底是哪里出了问题，怎样排除故障？ 再次感谢！
Make: BMW
Model: E90 323i
Year: 2011
Mileage: 133,000 KM
Issue: Intermittent DSC warning, steering wheel angle sensor reading freeze
Since last recall done in October 2018, car experienced a few times of DSC warning with brake light (!) , Tire Pressure and drifting. All at the same time, see pictures. Stop and turn off the engine, restart and go, the errors will be gone right away automatically.
Replaced battery at the end of May 2019. 3 weeks later, the issue came back more often. Feels like continue driving on high way for over 40 KM will trigger the alerts, but not 100% sure. Also feel like when driving along high way and passing certain area may trigger the alerts but not certain. No problem on local short trips.
Plug in Creator 310+ OBDII reader, found chassis error code 5E46. Monitoring data stream on the go, found out when alerts triggered, Steering Wheel Angle data froze at 0.33, other data including wheel speed sensors worked fine. Stop the car and put into park, turn the steering wheel, number not change, stays 0.33. See below pictures. When everything is functioning, if I try to fine adjust steering wheel to set the angle to 0.33, I won't be able to, seems the minimum positive number is 0.02, then 0.26, 0.35, ... , anyway, can’t hold it at 0.33 though. Also tried to tuning the wheel all the way lock-to-lock many times, no help to the situation.
Tried the above steps multiple times when issue happened, all the same result. Steering wheel angle sensor froze on 0.33 reading every time.
Need to know what is the exact problem, the sensor or CAN bus wire/connector/terminator, etc?
