The first step of installing a tire pressure sensor is to replace the valve cap, valve core and sensor seal to make sure everything seals correctly. Wash the area near the sensor/valve stem mounting point in the wheel and be sure the surface is intact. Put the sensor through the wheel, touching the back of the metal valve stem, so that the potted side is not damaged. Start by pushing the sensor down into place, then hand tighten the sensor nut until the housing is level and press it down to 6 Nm (53 in. lbs.). As tight as you go, make sure it's not so much as to pull the sensor off the valve stem; if that happens, you should repair it right away. If you have a rotating wheel tire changer, place the sensor valve stem about 180° from the head; if you have a rotating tool tire changer, place it opposite the installation end. Remember to keep the sensor away from the lower bead breaker area. Once the tire is mounted, check the Tire Inflation Pressure Label on the driver's side B-pillar and follow the air pressure shown there. Then, place the original valve stem cap securely to keep moisture out of the sensor. Then, put the wheel and tire assembly onto the vehicle and lower it to the ground.