@5W40及各位高手， 請教一個關於寶馬E90的問題

英語寫的，就不翻譯了，反正大家都看得懂。 非常感謝！

DSC似乎無規律報警，故障燈亮時方向盤轉角傳感器讀數鎖定。

請教到底是哪裏出了問題，怎樣排除故障？ 再次感謝！

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?

     

 

 

所有跟帖： 

• What recall was done in October 2018? -jsl609- ♀ (0 bytes) () 07/15/2019 postreply 12:56:51

• 好像是一個散熱器離線路太近容易著火的召回。 等我找找記錄再向您匯報 -kanata- ♂ (0 bytes) () 07/15/2019 postreply 13:13:33

• 說是停著都會起火，我的還沒修，自此不敢停車庫裏。 -bushihandyman- ♂ (0 bytes) () 07/15/2019 postreply 17:28:16

• 找到了， 去年的召回是 Engine PCV Blow-by heater 和 Blower Motor Wiring , 謝謝 -kanata- ♂ (0 bytes) () 07/19/2019 postreply 19:43:11

• 先用INPA re-calibrating steering wheel angel sensor試試，如無法重置或故障依舊，估 -Oneshotkill- ♂ (0 bytes) () 07/15/2019 postreply 13:15:24

• 計要麽angle sensor需要清理要麽可能損壞，但更傾向磨損和異物導致需要清理，網傳有多款馬車共享類似故障特征。 -Oneshotkill- ♂ (0 bytes) () 07/15/2019 postreply 13:21:01

• 我的剛出保修就換了steering column, 因為之前報過錯，dealer 消過碼，有記錄，所以免費 -bushihandyman- ♂ (0 bytes) () 07/15/2019 postreply 17:31:43

• 十一年的老馬車毛病都便宜地雷在保修期治好了，出了保修這些年零毛病，油封老化拆幾顆螺絲基本都能搞定！ -Oneshotkill- ♂ (0 bytes) () 07/15/2019 postreply 17:44:51

• LZ可能是angle sensor問題。我的是一紅色的方向盤鎖死警告，當時在DC出差，就近找一dealer, 消碼後平安了幾年 -bushihandyman- ♂ (0 bytes) () 07/15/2019 postreply 18:00:31

• INPA裏有實時轉角數據可測，LZ描述的現象大概率隻是需要清理，給你幾張圖看著玩玩。。。 -Oneshotkill- ♂ (239 bytes) () 07/15/2019 postreply 18:27:57

• 謝謝！當時是寶馬免費換的，所以也沒太留意。換好後開回家路上，各種燈又亮，返廠一次 -bushihandyman- ♂ (0 bytes) () 07/15/2019 postreply 19:15:33

• 謝謝！隻有一個Creator 310+, 沒有INPA，哪裏能買到，大約多少錢，使用複雜嗎？ -kanata- ♂ (0 bytes) () 07/15/2019 postreply 13:28:12