Tire pressure, what's a TPMS?

Tire pressure, what is a TPMS?

The vast majority of vehicles today come with tire pressure monitoring sensors or "TPMS" (Tire Pressure Monitoring Sensor). These small devices are installed in the wheels of your car and monitor the pressure of your tires. They usually consist of 2 parts: the fill valve and the electronic sensor itself.

The sensor relays tire pressure information to your vehicle's onboard computer. Some entry-level systems only display a warning light on your dashboard, while more advanced systems will allow you to follow the pressure of each tire in real time on your dashboard screen.

In both cases, the goal is the same: to warn the driver that there is a problem and to allow him to stop or not drive the vehicle until he has checked the condition of the tires, thus avoiding damage to the tire.

Example of an UK TPMS.

Is TPMS mandatory?

The answer depends on your vehicle and your tolerance to having a warning light on. Indeed, some cars, especially luxury brands such as Mercedes, Audi or BMW, may require sensors. Ask your advisor for more information. If your vehicle does not require these devices and if the warning light or message does not bother you, you can probably not install them.

This situation occurs regularly with people who have two sets of wheels. In order to save money, they install sensors on only one of the two sets. We recommend that you do a visual check of the tires before you leave.

My light is on! What should I do?

The light comes on while you are driving? Don't panic, pull over as soon as possible. Never neglect your safety and that of other motorists around you.
If your system indicates a lack of tire pressure, check visually. Is it soft? Is it completely flat? If it's a general light that's on, look carefully at each tire. Do you have a compressor? You can try inflating it and go to a shop. Have it checked for a "slow puncture".

If it's completely flat, we recommend calling your emergency service. Attempting to inflate or roll the tire could damage it or the wheel. Avoid costly replacement!

The light is on... But in very cold weather? Under these circumstances, the air in the tires has less volume. This is why it is possible to ask for a nitrogen inflation when installing the tires. This inert gas is not subject to temperature variations. If your tire light indicates soft tires in extreme cold, the first step is to visually check the tires.

Learn more about nitrogen filling her!

If you don't have a flat tire, you can inflate them yourself slightly to the pressure indicated in your vehicle door. Use a compressor and a pressure gauge or go to a gas station.

Be careful not to "over-inflate" the tire, as this can cause uneven tread wear.

If after you install your tires the light is on, it is normal. Your technician will need to reset the system. Some vehicles need to be driven for a certain time or distance for the light to go out. If in doubt, consult your trusted workshop.

Is it possible to replace a sensor?

Yes, it is! Sensors are small devices with a battery like your watch. After a few years, the batteries are exhausted and the device stops working. Moreover, these devices are not immune to road impacts. A good pothole can damage them.

Unfortunately, since the sensor is sealed, it is impossible to replace the battery. It must be replaced completely.

You can opt for an aftermarket or "universal" sensor, or a sensor that comes from your manufacturer. In both cases, you will have to program the TPMS so that your vehicle can recognize it.

Finally, TPMS are devices that communicate vehicle safety information to the driver. Find out when you buy your car if it is equipped with one.

Feel free to ask our team of experts for any questions! Call us 1 855 380-5285 or chat with us!

Happy trip!