TPMS Service at Johnny's Automotive

Your wheels have pressure sensors inside them reporting to a module in the car, and that module turns on the light on your dash. It matters more here than it would somewhere cooler. A tire that's running soft builds heat, and a soft tire on hot Florida pavement in the middle of a long highway run is how a good tire turns into a blowout. The light exists so you find out before the tire tells you the hard way.

There are two lights, and they mean different things. A steady light means the system is reading low pressure somewhere, so check all four, plus the spare on vehicles that monitor it. A light that blinks for about a minute when you start the car and then goes steady isn't reporting pressure at all. That's a system fault: a sensor that stopped reporting, a relearn that didn't take, or a module that lost track of one.

Sensors age out. The battery is sealed inside the housing, so there's no swapping it. When it's done, the sensor gets replaced, and they tend to go one at a time. That's why a light often shows up right after a tire change on a car still running its original sensors.

Any time a tire comes off the wheel, the small parts around the sensor decide whether it holds air: the seal, the grommet, the valve hardware. Those get replaced with a service kit at mounting instead of being reused. After that, the system usually needs a relearn so it knows which sensor sits at which corner. How that's done varies by vehicle. Some relearn themselves after a short drive, some need a tool at each wheel.

Here's the honest part. A TPMS light on a car with properly inflated tires is a sensor conversation, not a reason to sell you tires. We put a gauge on all four first and tell you which one you're actually dealing with. Our technicians are ASE certified, and the work we do carries a 36 month, 36,000 mile nationwide warranty.