Found this:
TPMS systems or sensors still need regular checkups and replacements as external factors can hinder their performance. Generally speaking, the most common issues which arise are corrosion, damage and run-down battery life.
If the vehicle is not equipped with a snap-in, rubber valve stem TPMS sensor, corrosion may become a problem. The biggest culprit is the road salt used in winter weather conditions. It may accelerate the rusting of not just the TPMS sensor, but at times the vehicle as well.
By damage, we mean accidental damage which may occur during the vehicle’s regular performance. Their position on the tires makes them face higher levels of danger than most other parts of the vehicle. For this reason, vehicle accidents, potholes, and flat tires can easily damage them.
Lastly, all TPMS sensors are operated by a battery. While most sensors do not run 24/7 – in this manner, they work on a battery-saving mode. Yet, they still have a lifespan. Usually, that span is between 5 to 10 years. Once the battery runs out, depending on the vehicle’s system, you might need to change the entire system or the individual sensors.
However, if you sense that the battery life of these sensors is nearing the end, it would be advisable to change them when you install
new tires. It will save you on the labor cost, but you do not need to do that every time.
