BMW – ABS / ASC / DSC Warning Light and Inoperative Speedometer – E39 5-series 528i 540i etc
car year: 1999
car model: 528i Wagon
I JUST REPLACED MY REAR BRAKE PADS AND ROTORS. PRIOR TO DOING THAT I HAD ALL SORTS OF WARNING LIGHTS ON THE DASH. THE COMPUTER SAID FAULTY SPEED SENSOR. THE SPEEDO ACTED UP JUST PRIOR TO THE BRAKE JOB. I REPLACED BOTH REAR SPEED SENSORS. THE COMPUTER IS STILL TELLING ME THAT THE RIGHT SENSOR IS FAULTY. I ALSO HAVE ALL THE DASH WARNING LIGHTS STILL ON. WHAT DO I CHECK NEXT ON THE RIGHT SIDE? SHOULD I REPLACE THE FRONT SENSORS OUT OF PRICIPLE. FRONT PADS AND ROTORS WERE REPLACED LAST FALL. I WOULD LOVE TO GET THE ABS AND TRACTION CONTROLL BACK WORKING.
Let’s see if I understand correctly; You have the ABS and the traction control (ASC / DSC/ ASC+T, etc) lights on and you have replaced both rear ABS wheel speed sensors (correct?). Additionally, the speedometer was not functioning. Since you did not mention that the speedometer is still not functioning, after replacing both rear sensors, I will assume that replacing the rear sensors did cure the speedometer fault (?). On the E39 chassis (5-series 97-03) , the left-rear wheel speed sensor feeds the speedometer. Therefore, if the speedometer is working, the left rear sensor should be OK.
What type of tool are you using that will read the ABS fault codes? And, you are saying that the code still reads as the right-rear sensor?