What is a TPMS valve stem?

Tire pressure monitoring system (TPMS) valve stems work in tandem with the TPMS to monitor the pressure of your tires. They also act as the main passageway for air in and out of the tires. A broken or leaking valve steam can quickly result in a flat tire, making their immediate replacement necessary..Click to see full answer. Beside this, can you replace valve stem on TPMS?Since a metal valve stem is connected to the sensor which sits on the other side of the tire, it may seem like the only possible fix for those conditions is to replace the entire TPMS sensor inside the wheel. However, that’s not the case. Once that’s done, you’ll have a new valve stem and valve core pin.Beside above, how much does it cost to replace a TPMS valve stem? Taking the place of $1.49 rubber valve stems of the past is the tire pressure monitor sensor. The replacement of these sensors can cost from $79.95 – $149.95 per sensor. Over time, these sensors are subject to corrosion and may require replacement. People also ask, how long do TPMS valve stems last? It depends on the age of the sensors. By the time the tires are worn out, the TPMS sensors may be nearing the end of their useful service life — or they may not have enough remaining battery life to last another set of tires. The lithium ion batteries inside TPMS sensors may last anywhere from five to 10 years.How do TPMS valve stems work?It reads out in pounds per square inch (psi), and it illuminates an amber warning light to alert you if one or more tires are low on air. Tire-pressure sensors are usually attached to the valve-stem assembly of each tire and are powered by batteries.