The short answer: a tire can look fine and still be low on air. Your tire pressure light is a reason to check with a gauge, even if all four tires look round and the car feels normal. Cooler weather, a leak, or a problem with the monitoring system can be behind the warning. Looking at the tire will not tell you which one it is.

Before you head out onto Route 3, the useful question is not whether the tire looks flat. It is whether the pressure matches what your vehicle calls for. Start there before assuming you need a new tire or a new sensor.

“Looks fine” is not a pressure reading

NHTSA explains that underinflation can be hard to see. Check all four tires with an accurate gauge. The correct pressure is on the vehicle’s tire-information label, usually in the driver’s door opening, or in the owner’s manual. Use that recommendation, not the number on the tire’s sidewall.

For an accurate cold reading, the vehicle should have been parked for at least three hours. Front and rear recommendations can differ, so read the label rather than automatically putting the same amount in every tire. If a tire is low and undamaged, add air to the recommended pressure and check it again with the gauge.

Why it can come on in the morning and go off later

A cooler morning can bring the pressure down enough to trigger the warning. As the tires warm up, the pressure can rise and the light can go out. Bridgestone describes this on-and-off pattern when pressures are near the warning threshold.

Michelin’s rule of thumb is about one psi for each 10°F drop in temperature. That is a guide to the effect of temperature, not a formula for deciding how much air your particular tire needs. The gauge and the vehicle label still make that decision.

A light that goes out on the way to work has not settled the question. Check the pressure cold. And do not bleed air out of a warm tire just to bring its reading down to the cold-pressure number; Michelin advises checking again after it cools.

Tire light keeps coming back? Call the shop · (540) 775-4400Monday to Friday, 8:00 AM to 5:00 PM

When adding air does not settle it

If a tire keeps losing pressure, it needs more than another top-up. Michelin identifies punctures, valve problems and the rim’s condition among the possible sources of air loss. A pressure check tells you what is happening now. Finding the leak tells you why it keeps happening.

Write down which tire was low and the reading before adding air. If you have checked it more than once, bring those readings with you. That gives the shop something more useful to work with than “the light comes on sometimes.” Do not assume that a recurring warning is just the weather.

Flashing first, then staying on, is a different clue

A warning that flashes for about 60 to 90 seconds at startup and then stays lit can indicate a fault in the tire pressure monitoring system, or TPMS. Bridgestone recommends a system inspection for that pattern. The system may not reliably warn you about low pressure until the fault is corrected.

That does not prove the tires themselves are properly inflated. Check them with a gauge as well. Tell the shop whether the light flashed first, stayed steady, or appeared only on a cold morning. Those are different observations, and they help narrow down the next check.

Reset procedures vary by vehicle. Follow your owner’s manual rather than trying a generic button sequence. Clearing a warning should come after addressing the reason for it.

Can you keep driving?

The dashboard light alone cannot give you a safe distance to drive. Check the tires and pressure promptly. If a tire is flat or visibly damaged, stop somewhere safe and arrange help rather than trying to make it to the shop.

A bulge in the sidewall is especially important: Michelin says a bulged tire cannot be repaired and should be replaced. Do not keep driving on it. A suitable spare, fitted safely according to the owner’s manual, or roadside assistance is the next step.

If the tires are inflated correctly but the warning remains, have the system checked. A normal-looking tire and a quiet dashboard are both useful observations. Neither replaces a proper pressure check.

What to tell us when you call

Have the vehicle’s year, make and model ready, along with the pressure readings and what the light is doing. Mention whether the warning began after tire work or a temperature change. You do not have to diagnose it before calling.

Sealston Automotive’s brakes, tires and alignment services include TPMS reset. Call the shop to discuss the warning and arrange the next step. Start with what you measured, and we can take the conversation from there.

Questions about your tire light? Call Sealston · (540) 775-4400Monday to Friday, 8:00 AM to 5:00 PM

Find us at 11102 Fletchers Chapel Road, King George, VA 22485.

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