Originally Posted by dy8tes (Post 900619)

I had the same thing happen to my 05 x5 4.4 I replaced the battery but I was in the process of getting an alternator due to a high pitch whinning noise which I suspect the bearings in the alternator. Anyway both were replaced no issues until the next day. I had a trans failsafe program error. Reset that fault and out of the blue I am getting ABS /BREAKS 4×4 TRACTION Control lights coming on the dash. Can't figure this out yet. This is driving me crazy. The car can sit over night and when it starts no warning lights and boom about 30 minutes later warning lights pop back on. Any suggestions?

Originally Posted by 2003x5guy (Post 899833)

Update.
Since my problem had originally occurred. The faults were intermittent. I was too busy to really deal with it and it really wasn't affecting the driving really.

The issues I wrote about in my first post occurred about two more times but again never for very long and was really more of a nuisance and disappear when I turn the car back on.

Everything was quiet for a week or so but then started getting intermittent DSC (yellow circle) and ABS fault lights on the dash.. No more "engine fail safe mode" issues as I orinally had. These new fault environments would come and go.

I know I needed to get the codes read to see what was going on. In the meantime I put in some seafoam fuel cleaner as a "why not".

Then finally had the codes read by a BMW shop.

5a brief power interruption
(76) 118 DME/DDE does not fulfill torque request
(68) 104 steering angle sensor, internal

The shop was either being lazy with me or they weren't sure exactly what the problem was, saying they needed to research the codes more. However, When I left, they suggested to replace the battery in case the battery was not providing proper amps, triggering all the faults due to the sensitive nature of the system. And the steering sensor.

Upon inspection of the battery myself later ( I don't know how old the battery was ). I deduced by stamped on codes of the duralast gold battery was made in 2005. So going on 5+years. Plausible cause to everything.

Going to see about replacing it. But I could see the alternator being cause as well.

Originally Posted by 2003x5guy (Post 903778)

Update

Battery was found to be only 2 years old. Did a full battery test. All came out normal.

Since then...other than the warning lights being on. Nothing really happening. Sooo decided I would try out a another shop to see what they had to say about. Again was causing me no trouble and wasn't a priority for me.

Till this past Monday.

Service Engine Light is now on solid. Rough idle. Add a little gas to keep RPM's at 1000 it purrs just fine. Let it fall back to idle and rough again.

I was surfing this forum last night and found this thread

http://www.xoutpost.com/bmw-sav-foru...og-solved.html

It might well be it, sounds good, or at least I want to believe it lol. Easy enough to find out. Stay tuned. If not...then back to the drawing board.

Originally Posted by 2003x5guy (Post 904760)

Update,

While I was digging in to get at the throttle valve, I attempted to take off the air adjusting unit. I discovered the flap inside the intake manifold was broken. Replaced the part ($187 from dealer) Service Engine Soon light and the rough idle was solved!

Took it to a new mechanic that seemed to have a better scanner and we determined that the Steering Angle sensor was not responding, no output data while we turned the wheel. I looked up other posts and found that it can be reset or recalibrated if power is lost. This should account for the DSC and ABS lights remaining. HOWEVER, I keep seeing the power interruption code show up and wonder if the steering angle sensor is fine but the power interruption is the true root cause of the issues.... ie electrical...perhaps the wiring harness mentioned earlier it this post thread....

Just replace the angle sensor or do more digging into the wiring/power interruption?? (sensor is $200) Thoughts..