BMW E53 3.0 M57N 160KW

[andrewwynn]

You can sometimes clean the SAS wiper by sweeping full lock a few times (for sake of your tires do while moving slowly or on sand).

Pull up the real-time angle and observe also you can actually calibrate where is zero it may resolve your out of balance situation.

Odds are your SAS is on its last days but often they can have a little more life brought into them with a good cleaning. Also there is a kit to replace the brushes that wear out on eBay for less than half the price of a replacement SAS.

Ive had the error come up about 3 times on my '01 and recently a buddy of mine's 540. I drove about a block at a walking pace steering lock to lock to scrub the SAS and the error stayed off for a week now but we know the SAS is not long for this world.