Tire Pressure Monitoring Systems (TPMS) play a vital role in vehicle driving safety.
However, tire pressure sensors also have their service life and need to be replaced due to various reasons such as wear and tear.
Follow us to learn more about tire pressure sensors and make your driving worry-free.
What is TPMS Sensor?
TPMS stands for Tire Pressure Monitoring System. It is a safety feature in vehicles that monitors the air pressure in the tires and alerts the driver when the pressure falls below a certain threshold. This helps prevent tire blowouts, improve fuel efficiency, and enhance overall vehicle safety.
Types of TPMS Sensor:
1. Direct TPMS:
Direct TPMS uses pressure monitoring sensors within each tire that monitor specific pressure levels – not just wheel revolution data from the anti-lock brake system.
Sensors in a direct TPMS may even provide tire temperature readings. The direct tire pressure monitoring system sends all of this data to a centralized control module where it’s analyzed, interpreted, and, if tire pressure is lower than it should be, transmitted directly to your dashboard where the indicator light illuminates. A direct tire pressure monitor usually sends all of this data wirelessly. Each sensor has a unique serial number. This is how the system not only distinguishes between itself and systems on other vehicles, but also among pressure readings for each individual tire.
Advantages: Provides real-time pressure readings and can alert drivers to exact tire pressures.
2. Indirect TPMS:
An indirect tire pressure monitoring system doesn't actually measure tire pressure. An indirect tire pressure monitor simply measures how fast your tires are rotating and sends signals to the computer that will actuate the indicator light when something in the rotation seems amiss.
Advantages: Less expensive to manufacture and maintain since it doesn’t require additional sensors.
Functions of TPMS Sensors:
1. Pressure Monitoring: Continuously checks the air pressure in each tire and alerts the driver if it drops below the recommended level.
2. Temperature Monitoring: Some advanced TPMS systems also monitor tire temperature, which can indicate potential issues beyond just pressure.
3. Alerts and Warnings: Triggers dashboard warnings (e.g., a warning light) when tire pressure is low, helping drivers take corrective action.
4. Data Logging: In some systems, data can be stored for analysis, helping with maintenance and monitoring trends over time.
When You Need to Replace the TPMS Sensor?
Replacing the Tire Pressure Monitoring System (TPMS) sensor is necessary in a few situations:
1. Sensor Malfunction: If the TPMS warning light remains on even after checking tire pressures, it could indicate a faulty sensor.
2. Battery Life: TPMS sensors have batteries that typically last 5-10 years. If your vehicle is older and the sensors are reaching the end of their battery life, they may need replacement.
3. Tire Replacement: When you change tires, especially if you’re switching between summer and winter tires, you might need to replace or reprogram the sensors, especially if they're damaged.
4. Physical Damage: If the sensor is damaged during tire mounting or from road hazards, it will need to be replaced.
5. New Tires: When installing new tires, it's a good opportunity to replace older TPMS sensors to ensure optimal functionality.
The Cost of Replacing the TPMS Sensor:
The cost of replacing a TPMS (Tire Pressure Monitoring System) sensor can vary based on several factors:
1. Type of Vehicle: Different makes and models have varying costs for parts and labor. Luxury vehicles or those with specialized systems may have higher replacement costs.
2. Brand of Sensor: OEM (Original Equipment Manufacturer) sensors tend to be more expensive than aftermarket options. While OEM sensors may offer better compatibility and warranty coverage, aftermarket sensors can provide significant savings.
3. Labor Costs: If you’re having the sensor replaced at a shop, labor rates can vary greatly by location and shop type. Dealerships typically charge higher labor rates than independent garages.
4. Number of Sensors: If you're replacing just one sensor, the cost will be lower than replacing all four. However, many choose to replace all sensors simultaneously, especially if they are close to the end of their lifespan.
5. Additional Services: Sometimes, the cost of replacing a TPMS sensor can include additional services such as tire rotation, balancing, or reprogramming the vehicle’s computer system. These services can add to the overall cost.
6. Seasonal Demand: Prices can fluctuate based on the time of year. For example, costs may be higher during peak tire change seasons (spring and fall).
7. Location: Regional differences in labor costs and parts availability can affect the price. Urban areas may have higher costs compared to rural locations.
How to Replace the TPMS Sensor by Myself?
Replacing a TPMS sensor yourself is a feasible task if you have basic mechanical skills. Here’s a step-by-step guide:
● Gather Tools: You will need a tire jack, lug wrench, TPMS sensor replacement tool, and potentially a tire pressure gauge.
● Lift the Vehicle: Use the jack to lift your vehicle and remove the wheel where you’ll replace the sensor.
● Remove the Tire: Unscrew the lug nuts and take off the tire.
● Access the Sensor: Depending on your vehicle, you may need to remove the tire from the rim to access the sensor. Carefully break the bead of the tire and remove it.
● Replace the Sensor: Remove the old TPMS sensor from its mounting position. Install the new sensor, making sure to secure it properly.
● Reinstall the Tire: If you removed the tire from the rim, reinstall it, ensuring it’s properly seated.
● Reattach the Wheel: Put the wheel back on the hub, hand-tighten the lug nuts, and lower the vehicle back to the ground. Then, use the lug wrench to fully tighten the nuts in a crisscross pattern.
● Recalibrate the System: Some vehicles may require recalibration, which can often be done using an OBD-II scanner or following specific procedures in your owner’s manual.
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Should I Need to Recalibrate after Replacing A TPMS Sensor?
Yes, after replacing a TPMS sensor, recalibration is often necessary. This ensures that the new sensor communicates correctly with the vehicle’s onboard computer. Depending on your vehicle, this may involve driving at a certain speed for a specific period or using a specialized tool.
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Conclusion:
A faulty sensor may cause a tire blowout or an accident. To prevent accidents, it is necessary to regularly check the tire pressure and replace the tire pressure sensor battery or replace the tire pressure sensor with a new one.
Questions You May Also Want to Know:
● How can I tell if my TPMS sensor is failing?
Common signs include the TPMS warning light staying on, fluctuating tire pressures on the dashboard, or a specific tire pressure reading being consistently incorrect.
● Can I drive with a faulty TPMS sensor?
While it’s technically possible, it’s not recommended. Driving with a faulty sensor means you may not be aware of underinflated tires, which can lead to unsafe driving conditions.
● What should I do if the TPMS light comes on?
Check the tire pressures of all tires, including the spare if equipped. If pressures are normal, a sensor may be malfunctioning, and further diagnosis may be needed.
● Can I replace just one TPMS sensor?
Yes, you can replace just one sensor. However, if your vehicle is older, it might be worth considering replacing all sensors at once to avoid future issues.
● Are aftermarket TPMS sensors reliable?
Many aftermarket TPMS sensors are reliable, but it’s important to choose reputable brands to ensure compatibility and performance.
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