ABS comming on too early
Hi guys !
I have a problem with my car when breaking. When breaking gently and reaching low speeds (like 20 km/h and lower towards 0 km/h) I feel the ABS is comming on, I feel the pedal vibrating. I find this behaviour abnormal. I mentiond the fact that the onboard ABS yellow led never comes on and all 4 ABS speed sensor are newly changed (I thought a senzor was faulty, but it's not). I went with my car at a BMW dealer and had this issue diagnosed. They said that all electronics are ok (ABS control unit, sensors....) and the issue could be the wheel bearing on the rear left because the ABS sensor is reading its values from the wheel bearing.
I have hesitated to change the bearing because I'm not convinced the abs speed sensor is reading values from wheel bearing so this is why I'm asking you. The scope is to fix the brakes, not the bearing unless it's necessary.
Do you have any ideea where the speed sensor is taking its value ?
And also, do you have any other ideea regarding this behaviour of the ABS system ?
BMW E39 520d 2000