The Tire Pressure Monitoring System (TPMS) is a key safety feature in cars today, but people do not always pay attention to it. TPMS is designed to warn drivers when tire pressure drops below safe levels to prevent accidents, increase fuel efficiency, and prolong tire life. Keep it in good shape so it works right, but eventually, you will have to replace the sensors.
What Is TPMS, And Why Is It Important?
TPMS works in real time, constantly checking tire pressure levels and informing you whenever it reduces below the levels specified by the manufacturer. Even bubble-light tires increase the distance to a stop, and they are more prone to a blowout, especially on highways. TPMS of proper functioning serves to:
- Enhance the stability and handling of the vehicles.
- Increase tire lifespan.
- Enhance fuel efficiency.
- Minimize the possibility of tires bursting.
Once the TPMS warning light is activated, it is a sign that should be ignored.
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How TPMS Sensors Work
The vast majority of current cars operate using direct TPMS, which is based on single sensors installed in each tire, attached to the valve stem. These sensors measure the changing air pressure and send the data wirelessly to the car’s computer. Each one has a pressure sensor, a temperature sensor, a battery, and a wireless transmitter. Due to exposure of these components to heat, moisture, vibration, and the road environment, wear and tear are bound to occur over time.
Common Causes the TPMS Light Turns On
A TPMS warning does not always indicate a sensor failure. Other conditions can also turn on the light:
Low Tire Pressure:
When the weather changes, tire pressure may change too. During the winter months, a warning light is common due to decreased tire pressure caused by cold air.
| Also Read: How Long Does a Spare Car Tire Last? |
Gradual Air Leaks:
Slow leak of nails, damage of valve stem, or leaks of beads result in loss of pressure, which is detected early by TPMS- in most cases when the tire does not appear flat.
Sensor Battery Failure:
TPMS sensors have sealed batteries, which last 5 to 10 years. When a battery gets weak, the sensor cannot send accurate info.
Sensor Damage:
Sensors can get busted up by road debris, rust, not putting tires on right, or just getting hit too hard.
Tips for TPMS Maintenance
Although TPMS sensors require minimal maintenance, the supporting components and driving habits influence the reliability of the systems.
Periodic Tire Pressure Inspections:
TPMS is not a substitute for manual checks but a warning system. Drivers must continue to check tire pressure monthly and during long journeys.
Valve Stem Care:
Leaks or sensor damage may result from corroded or broken valve stems. Tire service includes using metal valve caps and changing the stems to avoid the problems.
Avoid Improper Tire Service:
Improperly mounted sensors break when improper care is taken while changing tires or due to mishandling. Technicians who are familiar with TPMS systems should always be used.
Post-Service System Relearning:
The TPMS system should be recalibrated whenever tires are swapped or changed to make the vehicle locate the sensors correctly.
When TPMS Sensor Replacement is Necessary
Replacement of sensors is required in cases of electronic, physical, or battery failure of the unit. Indications that you have to change the sensors:
- The TPMS warning light will remain on even after the correct tire pressure is achieved.
- The warning light flashes before staying solid.
- There is a lack of pressure measurements or incorrect measurements.
- Dashboard indicators tell about a sensor failure.
Failure to notice failing sensors will be counterproductive to the TPMS system and pose safety hazards.
Step-by-Step TPMS Sensor Replacement Process
- Take the wheel off the car safely.
- The old sensor is detached from the valve stem.
- A new sensor is attached and sealed appropriately.
- Remounting and balancing of the tire takes place.
- The TPMS system is relearned or reprogrammed.
Since the sensors are installed on the tires, the sensors can be most conveniently replaced during tire replacement or rotation.
Comparison of OEM and Aftermarket TPMS Sensors
Drivers can usually decide between high-quality aftermarket and OEM (Original Equipment Manufacturer) sensors. Both of them are effective provided they are properly installed and programmed by a professional.
OEM Sensors: These cost more since they are custom-made for your car and guarantee compatibility.
Aftermarket Sensors: These are cheaper and can work in lots of cars, but need proper programming.
Risk of Driving Without a Working TPMS
If your TPMS is defective, you are losing a key safety feature. In the absence of pressure warning systems, drivers will be unaware of the situation of driving on underinflated tires, resulting in increased braking distance, uneven tire wear, poor fuel efficiency, higher blowout risk, and reduced vehicle stability. Non-functional TPMS may also make a vehicle fail inspection in most cases. Routine auto repair st peters can be useful to correctly maintain TPMS operation and contribute to long-term vehicle safety without unnecessary component changing.
Final Thoughts
TPMS is an essential part of a vehicle’s safety, efficiency, and tire life. TPMS sensors are tough, but they do not last forever. To keep your system working well and protecting you, get your tires checked often, maintain them, and replace sensors when needed. If you pay attention to TPMS warnings, you can keep your tires in good shape, drive better, and stay safer. TPMS might be small, but it gives you lots of good returns for every mile if you remember to check them.