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Tire Pressure Light On? What the TPMS Light Means

4 min readBy the mechanics at Aaron's Auto Repair

The short answer

A solid TPMS light means at least one tire is 25% or more below recommended pressure; check and fill all four tires to the pressure on your door-jamb sticker. A light that flashes for about a minute and then stays on means a TPMS sensor or system fault.

In this guide

Solid light

Low pressure. Use a gauge on all four tires, filling to the door-jamb pressure — not the max pressure printed on the tire.

Flashing then solid

A sensor battery has died or a sensor is missing or damaged. Sensors last 5–10 years.

Why it comes on in cold weather

Tire pressure drops about 1 PSI for every 10°F temperature drop. A blue norther blowing through DFW can trigger lights overnight.

Is it safe to drive?

Drive gently to the nearest air pump. If a tire looks visibly low or is losing air quickly, change to the spare.

Frequently Asked Questions

Some cars need a reset or a few miles of driving to relearn.

Typically $60–$150 per wheel installed.

Yes, and it's often repairable with a plug if it's in the tread.

Need flat tire change & repair near you?

Aaron's Auto Repair brings mobile flat tire service to you anywhere within 50 miles of Irving, 24/7 — including Irving, Grand Prairie, Grapevine, Coppell.

Call 469-262-5048

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