Tire Pressure Sensor

Each sensor is an integrated unit made up of the tire valve stem, a pressure sensor, and a transmitter. The unit is attached to the inside of the wheel, around the valve stem. The sensor transmits internal tire information onetime per 60 seconds to the TPMS control unit. When the TPMS control unit receives a tire pressure reading of less than 175 kPa (1.8 kgf/cm² , 25 psi), the TPMS control unit then turns on the low tire pressure indicator and the appropriate tire(s) indicator. When that tire's pressure is increased to more than 200 kPa (2.0 kgf/cm² , 29 psi), the transmitter sends the tire pressure reading to the TPMS control unit, and the TPMS control unit turns the indicators off.