Learn more Frequently Asked Questions About TPMS
What is a TPMS sensor?

Tire Pressure Monitoring System or TPMS is a sensor that detects low tire pressure and alerts the driver. It is installed in all wheels and it transfers the data to the electronic control unit. Later, ECU alerts the driver in case of low tire pressure.

What does a TPMS do?

A TPMS sensor alerts the driver one or more times about under inflated tires. This sensor ensures safety of passengers and drivers

What is the benefit of Installing a TPMS?

Since a TPMS alerts the driver when the tire pressure is 10 to 15 lower than the recommended, this allows the driver to inflate the tires on time. Besides, other benefits include tire health, better fuel efficiency, improved vehicle handling and longer tire life.
Frequently Asked Questions About TPMS

How many types of TPMS are there?

Tire pressure sensors are of two types: Direct and indirect TPMS sensors. Direct is mounted on the wheels to measure pressure in each tire and alert you when the pressure is low. Whereas, the indirect TPMS sensor works with an anti-lock braking system (ABS) and rotates the wheels at different speeds when tire pressure is low.

What is a direct TPMS?

Direct TPMS system is installed on the wheels to measure the tire pressure. When the pressure is lower than manufacturer’s recommended tire pressure, it transmits signals to the ECU. And, the car computer control turns the warning light on.

What is an indirect TPMS?

Indirect TPMS sensor works with the ABS wheel speed sensors. It changes the wheel speed when the tire pressure is low. Also, it sends notification to the driver when the tire is underinflated. The alert is sent when signals are received from the TPMS sensor to the car computers.

Is TPMS installed in wheels or tires?

A direct TPMS sensor is installed on each wheel to measure the pressure in tires. Whereas, there are some specifically designed TPMS sensors that are fitted with tire valves. Moreover, some TPMS sensors might be mounted inside the wheels.

Why does your TPMS sensor go bad?

A TPMS sensor is vulnerable to dust, temperature or vibrations. That said, it will affect the working of a tire pressure sensor.

How to test a bad TPMS sensor?

A bad TPMS sensor may affect the accuracy or illuminate the tire pressure warning light on the dashboard. Therefore, it is recommended to check the sensor with a TPMS tool. This will help you diagnose the problem correctly. If the sensor is still not working properly, you will need to replace it with a new one. A new sensor will require programming and settings according to the wheels and tires.

What is the difference between steady and flashing TPMS sensor warning light on the dashboard?

A steady TPMS light indicates that one or more of the tires is below the recommended tire air pressure value. When you inflate the tires properly, the warning light goes away.

A flashing TPMS light flashes for about 30 to 90 seconds and then becomes steady. This flashing light indicates there may be one or more problems associated with the TPMS sensor. There may be problems in the components including the module, sensors and one or more antennas.

What causes the TPMS light to come on?

Yes, you can drive with TPMS light on. However, it is not recommended at all. You need to inflate the tires properly to ensure complete safety. Or, when you change your tires, the TPMS light may come on for a short time.

Can you drive with a TPMS light on?

Yes, you can drive with TPMS light on. However, it is not recommended at all. You need to inflate the tires properly to ensure complete safety. Or, when you change your tires, the TPMS light may come on for a short time.

Why is your TPMS light on but tire pressure is fine?

This indicates that your TPMS sensor might be faulty. There may be a battery issue or your TPMS sensor requires reprogramming.

How do I get the TPMS light to turn off?

When you change the tires or TPMS sensor, your TPMS warning light may come on. But, reprogramming it will solve this problem. Moreover, if the warning light is on due to the low tire pressure, you will need to inflate the tires properly.

Do you need to install a TPMS sensor when replacing your tires?

Yes, it is recommended to install the TPMS sensor. The major benefit is that it warns the driver of the low tire pressure beforehand. Moreover, it illuminates the light when the load is more than tire pressure can carry.

Can I drive a car without TPMS?

Yes, you can drive a car without TPMS. However, one should install a tire pressure sensor to receive alerts when the tire pressure and temperature is not as per the manufacturer’s recommendations. Therefore, a TPMS sensor adds to your active safety systems.

How many years does a TPMS sensor last?

A Porcsi TPMS sensor lasts upto 10 years and provides accurate results.

Stay tuned for Frequently Asked Questions About TPMS​ sensor and learn more about this safety system.