champaign777- nothing done recently other than an oil change at the dealer and adding a K&N filter

 

also the same problem with the OP and also brake light came on this morning. have had many electrical (battery) issues recently. battery load test in order.

 

BMW battery replacement today with indy, along with fault clearing and re-registering

 

@BMW535xia - And now everything is fine I take it? How old is your car?

 

Did this resolve your problem?

 

it did!...thanks for asking.

 

all is good!...'08 model year. thanks.

 

There is an excellent DIY I found on the M5 forum for this exact issue:Steering angle sensor DIY fix - it worked - BMW M5 Forum and M6 Forums

It includes step by step instructions with pictures which I will be doing this morning. It appears from the write up that the SZL is not just a mechanical part but also has optical qualities which when fouled by dust or a film of grease ( think location just underneath the airbag and susceptible to excessive heat from sunlight as well as dust and residue from cleaning or detailing products).

I will let everyone know how this goes as any tricks that can help me save $780 are at least worth a try!!!

 

See new post! All fixed!