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TPMS Sensor

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The TPMS sensor can be found on vehicles built from 2007 onwards, and it looks like it's here to stay. To be familiar with this device, you need to fully understand how tire pressure monitoring systems work.

The TPMS is primarily designed to improve driving safety by warning the driver when a tire is significantly underinflated. This system includes sensors that are installed within the tire to gauge its pressure. It sends the information to one of several modules in the vehicle. As soon as the sensor gauges a big drop in the tire pressure, the system will warn the driver by means of a dashboard light.

If one of your ride's TPMS sensors starts to malfunction, you'd better have it checked or replaced to save yourself from all the hasales of having blown-out tires.

How to replace a tire pressure monitor system sensor

What you'll need:

  • Pliers
  • Car jacks
  • Jack stand
  • Tire machine
  • Lug nut wrench
  • Updated TPMS manual
  • New TPMS sensor and rebuild kit
  • 1/4-inch drive ratchet and socket set
  • 1/4-inch drive adjustable torque wrench in inch pounds

Taking the tire off the vehicle

Step 1: With the lug nut wrench, loosen all the wheel lug nuts but don't remove them from the wheel until the vehicle is jacked up.

Step 2: Raise the vehicle, place a jack under the chassis, close to the wheel that will be removed. Place jack stands to hold the vehicle up more securely. This time, you can remove the lug nuts and set them aside for future use. Take the wheel off the vehicle and bring it to your workbench or in a place where you can comfortably carry out your DIY task.

Removing the TPMS sensor

Step 3: Turn the tire stem valve cap clockwise until removed and deflate the tire by pressing down the center of the valve stem.

Step 4: Determine how the sensor is secured in place. If you see a bolt, then you need to loosen it with pliers and take it off to release the valve from the inside of the tire. If the sensor is held by a grommet, you can remove it using a ratchet and socket. In some vehicles, you'll also find a washer under the grommet. After removing the grommet and washer, you now need to poke the valve of the sensor into the tire's rim.

Step 5: With the tire machine, break the bead on both sides of the tire's rim to make the sensor drop down automatically at the bottom of the tire.

Step 6: Position the tire on the tire machine's turntable. Locate the adjustable claws and lock the rim to these claws.

Step 7: Lift the tire's top bead from the rim. Slide your hand inside the tire and take out the tire pressure monitoring system sensor. If you're planning to replace the tire at the same time, proceed to removing the bottom bead from the rim. But if you're only dealing with the sensor, put the tire's top bead back onto the rim.

Installing the new TPMS sensor

Step 8: Get the rubber gasket from your rebuild kit and install it onto the valve stem of the new sensor.

Step 9: Press the new sensor on the tire's sidewall, right in front of the valve stem hole that's located in the rim. Move the TPMS sensor valve stem down and up into the hole. Hold it there with one hand and add the washer and the grommet or the bolt to secure the sensor in place. Thread with your hand.

Step 10: Consult the TPMS manual and look for your vehicle model's recommended inch pounds to tighten the sensor's grommet. With the torque wrench, apply the inch pound setting recommended in the manual and tighten the grommet to specification before inflating the tire to the recommended pounds per square inch.