The tire pressure monitoring system is the only thing telling you a tire is going down before you feel it. When that light comes on it is worth finding out whether you have a slow leak or a dead sensor, and the answer changes what you should do next. We carry a TPMS tool and replacement sensors in the van, so both the diagnosis and the fix happen in one visit.
What's included
- Reading live sensor data to identify which corner is reporting a fault
- Pressure check and correction against the door-placard specification
- Slow leak diagnosis at the valve, bead and tread
- TPMS sensor replacement with programming and vehicle relearn
- New service kits — valve core, seal, nut and cap — with every tire change
- Honest reporting when a sensor is fine and the tire is the actual problem
A steady light and a flashing light mean different things
A steady tire pressure light means the system has read a pressure at or below roughly 25 percent under the placard figure. That is a real low tire, and cold snaps set off a wave of these calls every autumn because air pressure drops about one PSI for every ten degrees Fahrenheit.
A light that flashes for around sixty seconds when you start the car and then stays solid is the system reporting a fault with itself — most often a sensor whose battery has died, but sometimes a damaged sensor or a lost relearn after a wheel swap. Adding air will not clear that one.
Sensors, service kits and why we replace the small parts
A TPMS sensor is sealed with a rubber grommet and a valve core that corrode over time, particularly with road salt. Whenever a tire comes off the rim we fit a fresh service kit, because a five-dollar seal is what stops a slow leak from appearing a month after a tire change.
Sensor batteries cannot be replaced separately. When one dies, the sensor is replaced, programmed to your vehicle and relearned so the car knows which corner it sits in. We do that at your location with the same tool a shop uses.
Where we bring this service
We dispatch across New Castle County, Delaware and Cecil County, Maryland, 24 hours a day. Pick your area for local details:
- Mobile tire service in Wilmington, DE
- Mobile tire service in Newark, DE
- Mobile tire service in New Castle, DE
- Mobile tire service in Bear, DE
- Mobile tire service in Middletown, DE
- Mobile tire service in Claymont, DE
- Mobile tire service in Odessa, DE
- Mobile tire service in Townsend, DE
Common questions
My tire light is on but the tires look fine — what now?
A steady light almost always means one tire is genuinely low, and cold weather is the usual trigger. We check all four with a gauge and inflate to the door-placard pressure. A light that flashes for about a minute at startup and then stays on is a sensor fault instead, not a pressure problem.
Do I have to replace a TPMS sensor when I get a new tire?
Not automatically. The sensor batteries typically last around seven to ten years and are not replaceable on their own, so on an older sensor it is often sensible to change it while the tire is already off the rim. On a newer sensor we simply fit a new service kit and reuse it.
Can you program a sensor at my house?
Yes. We carry a TPMS tool and program and relearn sensors on site for most makes and models.
Is it legal to just turn the light off?
There is no way to properly switch the system off, and we will not fake a fix. If a sensor has failed we tell you what it costs to replace it, and if you decline we make sure you know which corner is unmonitored.