Tire Pressure Monitoring System

The tire pressure monitoring system functions

Modern vehicles are usually equipped with a tire pressure monitoring system (TPMS). Most systems have sensors inside each tire that send the pressure of the tires to a central computer. When the pressure is too low (or too high) and needs to be corrected, a warning light illuminates on your dashboard.

There are two kinds of TPMS systems. Direct systems have a battery power sensor in each wheel that measure tire pressure. The sensor sends a signal to a receiver that illuminates the warning light if pressure is low on a tire. Indirect system uses a computer program to detect under-inflation by measuring wheel rotation speed and other data.

What are the signs indicating a faulty tire pressure monitoring system?

The tire pressure monitoring system (TPMS) is part of your vehicle’s safety system: not only does it prevent premature tire wear but it also provides a smooth driving experience and makes your vehicle more fuel efficient. In fact, you lose 1% of your fuel economy for every three pounds of pressure lost. This system also helps you prevent overheating, flats, and possible tire blowouts.  

How often do you need to maintain your tire pressure monitoring system?

Tire pressure monitoring systems require very little maintenance other than occasionally replacing the sensor. Sensors sometimes break when changing tires between seasons—all the more reason to bring your vehicle to a certified NAPA AUTOPRO technician. What’s more, when a sensor is replaced or new sensors are installed on a set of spare tires, a technician at a certified NAPA AUTOPRO centre can synchronize the tire pressure monitoring system with the central computer.

Learn more about tire pressure monitoring system from our NAPA AUTOPRO experts in the video below: