[doru]

Wheel speed sensors can also become clogged/loaded with brake dust & rotor shaving and it will throw out the readings. On my old e39 I had an ABS/DSC etc. malfunction because of that. Cleaning them solved the issue. Not sure how the wheel speed sensors are attache to newer BMW's, probably the same as on the old ones, and if that's the case, one should be careful when attempting to pull them out. They are held in by one screw, but all that road crud gets lodged in where the wheels speed sensor sits (in the hub) and if you pry too hard on that plastic flange that holds the tightening screw, you can break it off. Not only you need a new sensor, but the leftover is very hard to pull out. Need some WD40 or other thin lube, and patience. And work it very gently. At first it won't budge. Hopefully these newer models BMW have a slightly different design...