Can someone please verify this for me. How many wheel speed sensors are on the vehicle because I am trying to replace them as it is a culprit of my Fail Safe Mode Trans, but when I go on Auto Parts Warehouse, they have a ton of them for the E53 4.4i. Some of them say ABS speed sensor and some of them say wheel mounting speed sensor. I am going to guess and say there is only 4 since there are 4 tires but knowing BMW I could be wrong. Any help would be greatly appreciated!!