Originally Posted by tomgtv

Those ABS sensors are what cause the DSC lights and maybe speedo function to die. The sensors are magnets that can get brake dust on them. They are held on with one bolt, blue wire as I recall. One of the rear sensors gives the info to the Speedo. That's why it dies if the entire circuit is compromised. The ABS sensors are $110 and easy to replace. I found my wire had rubbed against car and shorted. I went old school with a Weller soldering gun and some tape.......fixed it. Also I pulled all other sensors to clean. Take off the wheel makes it real easy. DIY difficulty about a 1.5!