What Causes a TPMS Sensor to Fail?
Sensors fail primarily due to battery failure or improper service procedures. Initially there will be a learning curve for installing and checking the TPMS system, but most service technicians will quickly learn how to identify and service the system efficiently. • Sensor batteries can become discharged and fail – the internal lithium battery is not serviceable, and it has a life expectancy of approximately 3-10 years. • Installing the incorrect valve core will cause failure – TPMS sensors require a special nickel-plated valve core instead of the regular copper or brass valve core • Normal tire changing procedures can damage a TPMS sensor – this includes flat repairs, new tire replacement, snow tire change or a wheel upgrade • Pulling a typical looking rubber valve stem out of the wheel will lead to a broken sensor. TPMS systems now use either metal or rubber valves • Over tightening a new sensor valve will result in a broken sensor • Typical road hazards – collisions, potholes, curbs
