Tire Pressure Monitoring System (TPMS) Warning Light Always On
The TPMS warning light is constantly illuminated on a 2019 Toyota Corolla, indicating that one or more tires have low pressure or the system has a fault. This can affect tire wear, fuel economy, and safety if not addressed.
Diagnosis Details
Possible Causes
One or more tires are significantly under-inflated (below the recommended pressure, typically 32-35 psi for this vehicle).
A TPMS sensor battery has failed or the sensor is damaged, especially if the light stays on after inflating tires.
The TPMS system needs to be reset after tire rotation or pressure adjustment, or there is a fault in the receiver module.
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What You Should Do
Check and adjust all tire pressures to the recommended level (found on driver's door jamb sticker).
If the light remains on after driving a few miles, the system may need a reset or a sensor replacement.
Visit a tire shop or dealer for TPMS diagnostic scan.
Estimated Repair Cost
$0 (if only air needed) to $50-$100 per sensor replacement, plus labor
Typical range: $50 – $100
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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.