Yes, you can usually drive briefly if the TPMS warning appears, but you should not ignore it. Inflate the tires to the recommended pressure as soon as possible and have the system checked if the light stays on or returns after inflation.
The Tire Pressure Monitoring System (TPMS) monitors each tire's air pressure and alerts you when it drops below the vehicle’s recommended level or when the system has a fault. Driving on underinflated tires can degrade handling, increase tire wear, and raise the risk of a blowout. This article explains what the warning means, what to do next, common causes, and how to diagnose or reset the system.
What the TPMS Light Indicates
The TPMS light can signal one of two situations: (1) underinflation in one or more tires, or (2) a fault in the TPMS itself. In most cars, a steady amber light means tires are underinflated; a flashing light or a different symbol may indicate a sensor fault or system issue. Always check the owner’s manual for your model's exact behavior.
Under-inflation warning
When the light indicates under-inflation, inspect tire pressures and fill to the vehicle’s recommended cold inflation pressure, usually found on the door jamb plaque or in the owner’s manual. Temperature changes and slow leaks can cause pressure to drop.
TPMS fault or sensor failure
A malfunction can occur if a sensor is dead, a valve stem is damaged, or the system cannot learn the sensors after rotation or replacement. In this case the light may stay on even if pressures are correct, and service is needed.
What to Do If the TPMS Light Comes On
Use this checklist to respond quickly and safely when the warning appears.
- Park safely as soon as you can; check tire pressures with a gauge across all four tires (and the spare if your car monitors it).
- Inflate each tire to the specified cold pressure printed on the door jamb placard or in the manual. Remember that pressure rises with heat, so measure when tires are cold.
- Recheck all tires after inflation. If one tire remains below target, there may be a puncture or leak.
- If the light goes off after inflation, proceed with normal driving but monitor for it to return; if it stays on, the issue may be a leak or a faulty sensor.
- For vehicles that require it, some systems reset automatically after driving a short distance; others need a manual reset via a button or the vehicle’s menu. Check your owner’s manual for the procedure.
- Consider visiting a tire shop or dealership if you cannot identify the leak or if the light remains on after inflation, as continuing to drive on underinflated tires can cause damage.
In most cases, once tire pressures are corrected and the system is reset or re-learned, the TPMS light will behave normally. If in doubt, err on the side of caution and seek professional help.
Common Causes of the TPMS Light
Understanding why the warning illuminates can help you act quickly and avoid unnecessary trips.
- One or more tires is underinflated, typically more than 5-6 psi below the recommended level.
- Temperature changes, such as a cold morning or cold weather, reduce tire pressure and can trigger the alert.
- A puncture, nail, or slow leak in a tire.
- TPMS sensor fault, dead battery, or damaged sensor valve stem.
- Recent tire rotation, replacement, or change that requires a TPMS relearn or reset.
- A malfunction in the system wiring or control module.
Most causes are fixable with proper inflation, seal repairs, or sensor maintenance. If a fault exists, professional diagnosis is recommended to avoid driving with a non-functioning warning.
How to Reset or Diagnose TPMS
Follow these steps to diagnose and potentially reset the system, but consult your owner’s manual for model-specific instructions.
- Check all tire pressures and inflate to the recommended cold pressure.
- Drive for 10-20 minutes at highway speeds (if your vehicle supports a relearn) to trigger the system to re-learn the sensors.
- If the light remains on after inflation, use the vehicle’s TPMS reset procedure if available (often in the settings or onboard diagnostics). Some cars require a dealer tool to relearn.
- Inspect tires for obvious punctures and check sensor valves and wheel rims for damage.
- If you cannot reset or determine the issue, visit a tire shop or dealership for a diagnostic scan; they can test sensors and replace faulty units.
Not all vehicles require a manual reset; many modern cars perform a relearn automatically after inflation and driving. If you note repeated warnings, persistent fault codes may indicate a sensor or ECU problem that needs service.
When to Seek Professional Help
Consider professional service if:
- The TPMS light stays on after you have inflated tires to the correct pressure and driven the vehicle for a reasonable distance.
- You notice a tire leak or visible damage to a tire or wheel.
- There are frequent false warnings, or the sensor seems non-responsive.
- You recently had new tires installed or wheels changed and the system could not relearn.
In these cases, a tire professional can diagnose the problem with a scan tool and address leaks or sensor faults to restore proper warning functionality.
Summary
TPMS warnings are there to protect your safety and tire life. Do not ignore a TPMS light. If it indicates underinflation, address tire pressures promptly and monitor for reappearance. If it indicates a fault, have the system diagnosed and repaired. Regular maintenance, including checking tire pressures monthly and after temperature changes or trips, helps prevent surprises and keeps your vehicle handling safely.