Do TST 507 sensors just go bad?
I had brand new tires and the TST 507 installed on my motorhome this past spring, and everything has been working fine until the end of Labor Day weekend. I keep all of my tires at 120psi, but when I ...
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I find you can't really use those sensors as an accurate measure of tire pressure. I'll top off my tires and, though the gauge shows they are all 80, the TPMS sensors will show 78-82. If you suspect a leak there is a rubber o-ring inside. The company will send you a free package of replacements. The rings will degrade over time, especially as I take mine off and on as I put my unit in and out of storage. I have had sensors fail completely- it will display nothing at that point. TST customer service is very good, give them a call.
