So my wife is driving my 550i for the very first time on the way to the dealer to drop it off for M Aero Kit install. We are making a nice easy turn to the right at an intersection doing all of about 20 MPH, when under the iDrive map comes a warning that says, "Drive system control off. Drive moderately!". Then BRAKE in orange comes on in center of dash display along with orange circle with triangle warning sign. Everything seems to be working fine, No DSC or other warning lights. We get to the dealer, shut the car off. Explain to the the SA what happened and he re-starts the car and no warning message or any immediate sign of a problme appears. Says they will check for faults while they have the car.

Sure hope it is not the dreaded Steering Angle Sensor issue!!

Anybody see anything similar happen and have an explanantion?

It is the steering angle sensor my friend and the amber brake light saz start control inactive. After you turn on the car and start the engine you need to drive just a little for the warnings to come on again. I have the same issue and I waited 17 dayz for the part. Because there is no loaner system in Turkey I drove the ar for 20 dayz and tomorrow I'm getting it replaced.

Worst fear realized! Few tings in life seem to come easily. Oh, well. Thanks for brightening my day :'(

Doesn't matter but I think you can get that fixed very quickly in USA my dealer even didn't know about the service bulletin so I gave them my print out :blink:

Hope that's all. I have the same indications. Took my 525 into the dealer in Stuttgart, they say I'm car #6 with the same issue with no solution from Munich as of yet... but the car is safe to drive. Where can I find the service bulletin?
Thanks!

Service bulletin would be very helpful.

http://forums.e60.net/index.php?showtopic=23191&st=15


and you can search TIS too or have the dealer search the TIS with the bulletin number. BTW tell your dealer they just need to change the Lenkungsgrad Winkel Zensor LWZ

Thanks for the quick response. I have read that there is a huge backlog for this part in the USA. Maybe I will get lucky.

You might cause there is no backlog in Turkey but I waited 17 dayz for the part to arrive and Germany is much more closert than it is to US

Thanks for the encouragement.