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What to do if…
a tire pressure warning light comes on and you have pulled over to check it

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy USA guide

Short answer

If the TPMS warning is solid, check all four road tires with a gauge before driving farther. If checking beside traffic is not safe, avoid roadside inspection and call for help. Do not continue on a tire that is flat, visibly damaged, or losing air.

Do not do these things

  • Do not stand in or close to moving traffic to inspect a tire.
  • Do not rely only on how the tires look; an underinflated tire may not look obviously flat.
  • Do not use the pressure printed on the tire sidewall as the vehicle’s target pressure.
  • Do not inflate or drive on a tire with a visible cut, bulge, exposed cords, or other obvious damage.
  • Do not keep testing the vehicle by driving if a tire is losing pressure or the vehicle feels unstable.

What to do now

  1. Keep the stop as safe as possible.
    Turn on the hazard lights and set the parking brake. If the vehicle is fully away from traffic and there is no immediate danger, remain buckled in the vehicle while deciding what to do. If the vehicle is in or very near moving traffic, could be struck from behind, or there is fire or smoke, call 911. Leave the vehicle for a safer place away from the roadway only if you can do so safely.

  2. Do a brief visual check only if you can do it safely.
    Look at the four road tires for:

    • One tire sitting noticeably lower than the others
    • A nail, screw, or other object in the tread
    • A cut, bulge, exposed cord, or other visible damage
    • Hissing or rapid air loss
      If a tire is flat, damaged, or losing air, do not drive on it. Call roadside assistance.

  3. Check the pressure of all four road tires with a gauge.
    Compare each reading with the recommended pressure on the Tire and Loading Information Label, usually on the driver-side door edge or post, or in the owner’s manual. Use the vehicle placard pressure, not the number molded into the tire sidewall.

  4. If a tire is low, not visibly damaged, and safe to inflate, add air and check it again.
    Inflate it to the placard PSI and confirm the reading with the gauge. If the tires are warm because you drove before pulling over, treat this as a temporary correction and recheck the pressure after the vehicle has been parked for at least three hours.

  5. Decide whether any driving is reasonable.
    Do not continue if a tire will not hold air, is visibly damaged, is flat, cannot be checked safely, or the vehicle feels unstable. If the pressure is corrected, no damage is visible, the reading is not dropping, and the vehicle feels normal, drive cautiously only to a safer place or tire service. Stop again if the warning returns or the handling changes.

  6. Check what the warning light is doing.
    If the TPMS light flashes for a period and then stays on, the system may not be working properly. Arrange a service inspection and use a gauge rather than relying on the warning system alone. If a solid warning remains after the pressures are corrected, check the owner’s manual once you are somewhere safe and arrange a tire or TPMS inspection if needed.

  7. Call for the right level of help.
    Call roadside assistance if you cannot safely continue. Call 911 for immediate danger, such as being in or near a live lane, a crash with injuries, fire or smoke, or an unsafe location.

What can wait

  • You do not need to identify the exact cause while you are beside the road. It may be a puncture, gradual air loss, a temperature change, or a TPMS issue.
  • You do not need to work through reset steps or arrange repairs until you are somewhere safe.
  • You do not need to check the spare tire now unless you may need to use it.

Important reassurance

Stopping to check the warning was a useful step. The warning does not by itself tell you the cause, but a gauge check and a quick damage check can help you avoid driving on a tire that needs roadside assistance.

Scope note

These are first steps for the immediate roadside moment. Later decisions about a leak, tire repair, replacement, or a TPMS fault may need a tire service professional.

Important note

This guide is general information, not mechanical, legal, financial, therapeutic, or other professional advice. If you are unsure whether the tire or location is safe, prioritize personal safety and get professional help.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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