In 2007 the Federal Government mandated that all new passenger cars sold in the US be equipped with Tire Pressure Monitoring Systems (TPMS). Since that time, thousands of these tires have been successfully treated with Ultraseal Tirelife Extender/Sealer.
We have continually tested and monitored Ultraseal-treated, TPMS-equipped vehicles to confirm and verify compatibility. Data collected over the past 10 years indicates there is a minimum likelihood of Ultraseal causing system failures or damaging wheel sensors. The number of reports of TPMS warning lights being triggered is surprisingly low (less than 10 during this period). Of those, the majority were corrected by simply adding air to the tire. There have been no claims that Ultraseal caused failures resulting in sensor replacements.
If sealant were to partially block the sensor port it couldtemporarily restrict air passage causing inaccurate pressure readings, possibly triggering a TPMS warning light. Ultraseal is water-dispersible and can be easily cleaned from the sensor with a damp cloth causing no permanent effects.