Foxwell News
Home - About - Foxwell News - How To Install Your TPMS Sensor: Easy Guide
Exhibition CalendarFoxwell NewsProduct NewsAbout UsDownload

How To Install Your TPMS Sensor: Easy Guide

Mar. 25, 2024

Several new gadgets enhance vehicle maintenance, among them, TPMS sensors stand out. A primary objective of TPMS is to prevent traffic accidents and reduce tire wear caused by under-inflated tires.


If you've ever seen a yellowish light on your dashboard, it's likely indicating low tire pressure. In response, you may pull into a gas station and inflate your tires to the recommended pressure. Occasionally, a single sensor may be insufficient or fail altogether, necessitating the installation of a new one. This guide is designed to assist you in this process.


What is a TPMS Sensor?


A Tire Pressure Monitoring System (TPMS) sensor is designed to alert you when one or more tires are underinflated, which can lead to hazardous driving conditions. For further details, refer to this article.




Although straightforward, the TPMS sensor comprises several components that must be verified before installation on your tire or tires.




There are two types of TPMS sensors. One of them uses a software-based system (indirect). The second type uses sensors built into the valve stem caps (direct). The latter is the type you can install by yourself.




Direct TPMS utilizes sensors positioned in each tire or valve stem. These sensors consist of battery-powered pressure sensors within each wheel. They transmit pressure data to a central control unit, which subsequently alerts the vehicle's information system of any high or low tire pressure.




Indirect TPMS also employs sensors within each tire or valve stem. However, instead of measuring pressure directly, these sensors monitor factors like wheel speed and rotation. The central control unit then interprets these data to determine potential tire pressure issues and alerts the vehicle's information system accordingly.


TPMS Sensor

The Installation Process


Before commencing the installation process, ensure you have checked off these three items:


1. Sufficient sensors for your tires

2. A designated place to store your old stem cap (if required)

3. Compatibility between the receiver and sensors


1. Valve Stem Caps


Begin by removing the valve stem caps from all your tires, including the spare tire. If they haven't been removed in a while, the caps may be difficult to turn. Avoid forcing them; instead, consider softening the plastic with hot water before attempting to twist them off.


Safely store the caps in a bucket or wrap them in a piece of cloth.


2. Verify Tire Pressure


Before proceeding with sensor installation, it's crucial to check the tire pressure and confirm it's at the appropriate inflation level.


Refer to your user manual to determine the correct tire pressure for your specific vehicle, as specifications vary between models.


If you're replacing an old sensor, you'll need to deflate the tire to remove it. Once deflated, ensure the valve stem hole is free of any dirt or corrosion.


This step can also be performed, and is often recommended, by removing the tire from your vehicle.


3. Calibrate the TPMS


To ensure proper functionality of your monitor, it needs to be calibrated. Make sure to calibrate it with each tire to match the corresponding pressure.


4. Installing the Sensors


Installing direct sensors is simple and doesn't require automotive experience. To begin, screw the sensors onto the valve stem threads in place of the valve stem caps.


Before tightening the sensor nut, press down on the sensor housing to ensure it sits flush with the interior contour of the wheel.


While maintaining this position, carefully tighten the sensor nut. Exercise caution as over-torquing the sensor nut can lead to sensor separation from the valve stem.


5. Activate the Tire Pressure Monitor


While inflating your tires to their recommended pressure, ensure to activate your monitor. Verify if it successfully receives a signal from each tire.


If it fails to do so, consult the manufacturer's manual for troubleshooting steps. Additionally, refer to the common issues listed at the end of this article.


Once your monitor provides all the necessary information, you're ready to go!


Tips and Best Practices


Avoiding carelessness is crucial to prevent sensor damage. Here are some quick and easy tips to extend the lifespan of your TPMS:




Invest in a torque wrench that measures inch-pound torque to tighten your sensor securely without risking breakage.


Seals and Valve Stems:


Technicians often advise installing new seals and valve stem nuts when reusing a clamp-on TPMS sensor to ensure proper sealing around the sensor. This helps maintain optimal functionality and sealing around the sensor valve stem.


Clean the Area


Prior to installation, ensure the area surrounding the sensor and valve stem in the wheel is thoroughly clean. Also, inspect the wheel surface for any damage. Proper cleaning is essential to prevent leakage caused by an old seal. Avoid lubricating or using sealant in this area, as it can alter torque values and compromise the integrity of the stem.


Avoid Over-Tightening


The sensor nut must be tightened to a specific value. Contrary to popular belief, exceeding this ideal torque value can lead to seal leakage, nut or valve stem damage, and in the worst-case scenario, sensor body breakage.


Common Challenges and Troubleshooting


Comparatively, TPMS installation is straightforward when compared to other vehicle systems. However, certain challenges or troubleshooting scenarios may arise.


One important aspect to remember is the spare tire. Since it's typically mounted in the trunk or on the car's frame, it's essential to install a sensor on the spare tire as well. This is crucial for recalibration and prevents false warning light activations on the monitor.


Another common issue encountered during TPMS installation is sensor calibration. A TPMS factory relearn procedure is necessary whenever a TPMS sensor is serviced or new sensor(s) are installed. This ensures the entire TPMS system functions properly.


In conclusion


TPMS sensors have become indispensable in our generation, ensuring that your vehicle tires maintain the correct pressure, thus reducing the risks of car accidents and tire wear.


It is highly recommended that you have your TPMS sensor installed by a mechanic knowledgeable about these devices. By following the steps mentioned earlier, you can ensure a properly functioning monitor.

TPMS Sensor


Copyright © Shenzhen Foxwell Technology Co., Ltd. All Rights Reserved 2009-2021 | Sitemap
Powered by Reanod