Tire Pressure Warning Light Always On
The tire pressure monitoring system (TPMS) warning light is constantly illuminated, indicating one or more tires are significantly underinflated or there is a system fault.
Diagnosis Details
Possible Causes
One or more tires have low air pressure due to a slow leak, puncture, or seasonal temperature drop.
TPMS sensor battery is depleted or sensor has failed, especially if the light stays on after inflating tires to correct pressure.
TPMS system needs resetting after tire rotation or replacement, or there is a fault in the TPMS module or wiring.
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What You Should Do
Check and adjust tire pressures to the recommended level (usually found on driver's door jamb).
If the light remains on after driving a few miles, inspect tires for damage or leaks.
If pressures are correct, the system may need a reset or sensor replacement.
Visit a tire shop or dealership for diagnostic scan of TPMS sensors.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.