Have you ever noticed a small warning light on your dashboard that looks like a cross-section of a tyre with an exclamation mark? That’s your Tyre Pressure Monitoring System (TPMS) alerting you to a possible issue with your tyre pressure. But what TPMS is on a car exactly, and why is it essential?
Tyre pressure is a critical factor in road safety, fuel efficiency, and tyre lifespan. A TPMS continuously monitors the air pressure in your tyres, and warns you when levels drop below the recommended threshold. Since 2014, TPMS has been mandatory in all newly manufactured vehicles in the UK to improve road safety and reduce emissions.
Want to understand how TPMS works and why it’s essential? Keep reading to learn everything you need to know!
So, What TPMS is on a Car?
TPMS is an electronic system designed to track tyre pressure levels and alert the driver if the pressure falls below the optimal range. Driving with under-inflated tyres can lead to poor handling, reduced fuel economy, and increased risk of blowouts. Having this system installed in your vehicle helps mitigate these risks by ensuring tyres maintain the correct pressure.
How Does TPMS Work?
There are two main types of TPMS:
- Direct TPMS: This system uses sensors placed inside each tyre to measure air pressure and relay real-time data to the car’s dashboard.
- Indirect TPMS: Instead of using pressure sensors, this system relies on wheel speed sensors from the car’s ABS (anti-lock braking system) to detect changes in tyre rotation caused by low pressure.
Each type has its advantages, but direct TPMS is generally considered more accurate, in contrast, indirect TPMS although cost-effective and low-maintenance is less precise. Regardless of the system, TPMS helps prevent premature tyre wear, improves handling, and ensures your vehicle performs efficiently.
What TPMS Warning Light Is?
The TPMS warning light is an indicator that tyre pressure is either too low or too high. If the light remains on, it means at least one tyre is under-inflated. If the light blinks before staying on, it could indicate that your vehicle’s TPMS has malfunctioned and may need inspection from professionals.
How Should You Respond When the TPMS Light Comes On?
- You should check all four tyres using a manual pressure gauge.
- Inflate or deflate tyres as needed to meet the manufacturer’s recommended PSI.
- Reset the TPMS system if required (this process varies by vehicle manufacturer).
If the TPMS light remains on even after inflating your tyres, there could be an issue with the sensor. Martins Tyres provides TPMS diagnostic checks and recalibrations to ensure your system functions correctly.
TPMS and UK MOT (Ministry Of Transport) Tests
Did you know that a faulty TPMS can result in an MOT failure? Since TPMS is a mandatory feature for all cars manufactured after 2014, vehicles with a malfunctioning TPMS will not pass an MOT test.
To avoid issues, ensure your TPMS is functioning properly before scheduling your MOT. Regular tyre maintenance and recalibration services can help keep the system in optimal condition.
Common TPMS Issues & Troubleshooting
Even though TPMS is a helpful safety feature, issues and problems can happen to it sometimes. Some of the common TPMS issues include:
- False Alerts: Sometimes, the TPMS light turns on even when tyre pressure is correct. This could be due to sensor miscalibration.
- Battery Failure: Direct TPMS sensors have built-in batteries that can wear out over time which requires sensor replacement.
- Sensor Damage: Harsh road conditions, tyre replacements, or punctures can damage TPMS sensors.
How TPMS Improves Fuel Economy and Tyre Longevity
Driving with under-inflated tyres can increase rolling resistance, which forces the engine to work harder, reducing fuel efficiency. Properly inflated tyres, monitored by TPMS, can save motorists an estimated 3-5% in fuel costs.
Additionally, maintaining the correct tyre pressure helps prevent uneven wear, extending tyre lifespan and reducing the need for premature replacements. This not only saves money but also contributes to eco-friendly driving by reducing unnecessary tyre waste.
Martins Tyres TPMS Services
At Martins Tyres, we specialise in TPMS diagnostics, sensor replacements, and recalibration services to keep your system operating efficiently. Our expert technicians provide:
- TPMS Sensor Replacement: If your TPMS sensor is faulty, we can install a new one quickly and affordably.
- TPMS Recalibration: Resetting the TPMS system to ensure it accurately monitors tyre pressure.
- Full TPMS Diagnostic Check: Identifying and resolving any TPMS-related issues.
Don’t ignore your TPMS warning light! Whether you need a sensor replacement, recalibration, or a full diagnostic check, our experts at Martins Tyres are here to help.
Frequently Asked Questions (FAQs)
Can I drive with the TPMS light on?
We do not recommend driving with a TPMS light on. While you can still drive your car, having low tyre pressures can negatively affect handling, fuel efficiency, and tyre lifespan. You should always check and correct your tyre pressure as soon as possible.
How often should I check my tyre pressure if I have TPMS?
Even if your vehicle has TPMS installed, it’s advisable to manually check tyre pressure at least once a month to ensure accurate readings and avoid potential system faults.
Do I need to replace TPMS sensors?
Yes, TPMS sensors typically last 5-10 years. If your system frequently malfunctions, it might be the right time to replace your faulty TPMS sensors.
Can TPMS be installed on older cars?
Yes, aftermarket TPMS kits are available and can be installed on older vehicles to improve safety and monitoring.
Will changing my tyres affect TPMS?
Yes, replacing tyres can sometimes interfere with TPMS sensors. It’s important to recalibrate or reset the system after fitting new tyres.
Stay Safe with a Well-Maintained TPMS
Understanding what TPMS is on a car and how it works is crucial for maintaining road safety, improving fuel efficiency, and prolonging your vehicles tyre lifespan. Whether you need a TPMS check, sensor replacement, or recalibration, Martins Tyres is here to help.
If your TPMS light is on or you’re experiencing issues, contact Martins Tyres today for expert assistance and ensure your tyres are in peak condition!