As already said sounds like a pick up ring covered in grease or shit lol.I wouldnt even try to attempt to get the sensors out of the hubs.I would just remove the drive shafts and front hubs to clean the pick up rings.My abs light was on a few weeks ago.I knew it was the osf wheel.The sensor came out ok cause ive had it out many a time.


There was a bit of grease inbetween the teeth.I stuck a small screw driver in the abs sensor hole and cleaned the gaps between the teeth.It took some doing but its sorted now.