68249197AA 68249197AB 68249197AC 68157568AA 68157568AB 68157568AA 68157568AC 68239720AA 68239720AB 68239720AC 231008-101 231008-109 68378369AE 68249201AA 683. Tire Pressure Monitoring Sensor. If you can’t confirm 100% fit, Pls Send us your VIN or part number(s). Loosen the tire: Remove the valve cap and core and deflate the tire. Dismount the tire: Clamp the tire onto the tire changer, and adjust the valve at 1 o’clock relative to the tire separation head. Insert the tire tool and lift the tire bead onto the mounting head to discount the head. Dismount the sensor: With a screwdriver remove the fastening screw and sensor from the Valve stem, then loosen the nut and remove the valve. Mount sensor and valve: Slide the valve stem through the valve hole of the rim. Tighten the screw-nut with 4.0 Nm with the help of the positioning pin. Assemble the sensor body against the rim and tighten the screw. Mount the tire: Place the tire on the rim, making sure that the valve faces the separation head at an angle of 180 degrees. Mount the tire over the rim.