Tire Pressure Monitoring Sensor (TPMS)

A tire-pressure sensor is a small programmable electronic device.

Located in the pressurized pocket. Made by a wheel and tire, that measures the air pressure inside the tire.

The sensor transmits that information via low-frequency radio to the vehicle’s onboard computer.

It reads out in pounds per square inch (psi). Showing the data as an amber warning light to alert you if one or more tires are low on air.