What Is The History Of Tire Pressure Monitoring Systems?
Tire pressure monitoring systems ("TPMS") are integrated assemblies that include sensors in the tire stems, and they exist for the purpose of warning a driver when the air pressure in any of their tires has dropped to an unsafe level. To do this, pressure detectors are fitted on the part of the stem that sits inside the tire. Those pressure detectors each have their own battery and transmitter which relay information to the car's main computer. A normal-looking stem protrudes outside the tire for the purposes of adding air, and looks indistinguishable from traditional valve stems that don't have pressure sensors.