Tire pressure sensor

WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

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 one time every 60 seconds to the control unit. When the TPMS control unit receives tire pressure that is less than: Front 190 kPa (1.9 kgf/cm² , 28 psi), rear 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: Front 210 kPa (2.1 kgf/cm² , 30 psi), rear 200 kPa (2.0 kgf/cm² , 29 psi), the transmitter sends tire pressure to the control unit, and then the control unit turns the indicators off.