Steering Angle Sensor E39 2002

I just picked my car from a Type I inspection and I've been told that the sensor is faulty. I know this is quite expensive (200 EUR) but if you take it to BMW dealer then they will charge about 600 EUR. I have two questions:

1) Does someone know how to change this sensor? Can you send me the link?

2) I know then you need to take the car to calibrate the sensor, but Does anyone know what happens if you change it and drive until it is calibrated? Do I need to turn the DSC off?

525d July 2002
312.000 Kilometers
6-6,5 liters/100 Km @ 140/150 Km/hour
Repairs in 8,5 year - less de 1.000 Euros. (without rutinary maintenance and replacements)

what are the car's symptoms? Typically with a bad steer angle sensor the ABS and brake lights would probably be on, and DSC would not work. These don't fail all that often either. Just curious.

I bought new sensor on Ebay for $100, but INDY shop changed it for me. In case of DYI - note that you'll need to pull-out steering column.

Originally Posted by Mark@EACTuning

what are the car's symptoms? Typically with a bad steer angle sensor the ABS and brake lights would probably be on, and DSC would not work. These don't fail all that often either. Just curious.

In my case only DSC light was constantly on.

see #9 in diagram below: http://www.realoem.com/bmw/showparts...32&fg=30&hl=55

Yes, I've been looking in the Internet and it is not very often but there are a few messages in different forums. The DSC light is not on but I have noticed lately that the traction has changed. Mine is manual shift (I am in Spain) and now the car reacts as if I was driving an automatic car. I think what I will do is first, locate the sensor, then I will change it myself and then I will take to an Indy to calibrate it. Many thanks to all for your help. By the way, it is an incredible car.

Dunno how to help you but I do know there is a most excellent multi-page PDF treatise on how the entire DSC system works, along with a short description of the testing and operation of all the sensors, including the steering wheel sensors, appended to this thread.

bmw_abs_dsc_asc_repair.pdf (893.3 KB, 2560 views)