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 the internal tire information to the TPMS control unit once every 60 seconds when the vehicle speed exceeds 28 mph (45 km/h). When the TPMS control unit receives a tire pressure signal that is less than: Except SC model 190 kPa (1.9 kgf/cm₂ , 28 psi), SC model 175 kPa (1.8 kgf/cm₂ , 25 psi), the TPMS control unit then turns on the low tire pressure indicator. When that tire's pressure is increased to more than: Except SC model 210 kPa (2.1 kgf/cm₂ , 30 psi), SC model 200 kPa (2.0 kgf/cm₂ , 29 psi), and the vehicle is driven above 28 mph (45 km/h) the transmitter sends the tire pressure signal to the TPMS control unit, and then the TPMS control unit turns the indicator off.

Sensor are active:

• When the wheel rotates over 28 mph (45 km/h), the sensor detects the momentum, switches the sensor to the normal function mode.
• The LF (low frequency) signal of the TPMS initializer tool makes the sensor active even though the vehicle is stopped. The tire pressure sensor goes into sleep mode when the acceleration sensor detects the wheel is stationary for 5 minutes or more continuously.