A lit TPMS icon means at least one tire has dropped well below the pressure listed on the door-jamb placard — it doesn't say which tire, just that the system caught a drop. Las Vegas Tire Shop checks actual pressures against that placard, then decides whether the fix is air, a valve stem, or a sensor that's stopped reporting.
The TPMS light doesn't distinguish between a nail in the tread, a slow leak at the bead, a valve stem going bad, and a sensor battery that's finally died after years in service — it just comes on. A cold snap or even a cool morning after a hot day will drop tire pressure enough to trip the light too, with nothing actually wrong with the tire itself.
Sensor service at Las Vegas Tire Shop covers more than reprogramming after a tire change — it's the rebuild kit (the valve core, grommet, and cap) that has to get replaced any time a tire comes off the wheel, whether or not the sensor itself is bad, because reusing an old rebuild kit is how slow leaks start at the valve stem.
Does the TPMS light mean I need a new sensor?
Not usually. Most TPMS lights are a pressure problem, not a sensor failure — air up all four (and the spare, if it's monitored) to the number on the door-jamb placard and see if the light clears after a short drive.
If it doesn't clear, or it comes back within a day or two with no obvious leak, that's when it's worth checking whether a sensor battery has died or a sensor was damaged during a past tire change. Current hours: Mon–Sat 9:00 AM – 9:00 PM, Sun 9:00 AM – 5:30 PM.
What actually gets replaced during sensor service?
The sensor itself only gets swapped if it's dead or damaged — otherwise it's tested, reprogrammed to the vehicle, and reinstalled with a fresh rebuild kit every time the tire comes off. Skipping the rebuild kit to save a step is how a fine sensor ends up causing a slow leak a year later.
Las Vegas Tire Shop holds a 4.6 rating from 34 Google reviews for exactly this kind of routine, unglamorous work — pressure checks and rebuild kits, not big-ticket repairs.
Why is my TPMS light on when the tires look fine?
Because it's reading actual pressure, not tread or appearance — a tire can look completely normal and still be several pounds under the number on the door-jamb placard. Temperature swings alone can be enough to trip it without any leak at all.
Do new tires need new TPMS sensors?
Not automatically — a working sensor gets reused, but the rebuild kit (valve core, grommet, cap) gets replaced every time the tire comes off the wheel, and the sensor gets tested and reprogrammed to the vehicle. A sensor only gets replaced outright if it's not reporting or its battery has died.
Can I just ignore the TPMS light?
You can, but the system exists because underinflated tires wear unevenly, run hotter, and are more likely to fail — ignoring the light doesn't fix the pressure problem, it just stops you from knowing about it. If it won't clear after airing up, call (725) 224-5551 rather than let it ride.
How long do TPMS sensor batteries last?
Years, but not forever — they're sealed units, so when the battery dies the whole sensor gets replaced rather than serviced. A sensor that's stopped reporting after years of normal use is usually a dead battery, not a defect.