How to Replace a BMW Speed Sensor

1. Open the hood and disconnect the negative battery cable from the battery. Loosen the clamp nut with a wrench and pull the cable off.
2. Lift one corner of the BMW up with a jack. Place a jack stand under the BMW and lower the vehicle onto the jack stand.
3. Remove the lug nuts from the tire with a lug nut wrench. Pull the tire off.
4. Remove the black box behind the wheel column. Loosen the mounting bolts with a socket wrench and pull the box out.
5. Pull the tabs on either side of the speed sensor. Pull it out and disconnect the wiring harness underneath it.
6. Connect the wiring harness to the new BMW speed sensor and put it in place of the old speed sensor in the black box.
7. Reattach the black box with the socket wrench. Put the tire back on the BMW and secure it in place with the lug nut wrench. Use the jack to lower the vehicle to the ground. Repeat for all tires that need to have the speed sensor replaced.