When a TPMS light on a vehicle's dashboard stays on, it is a sign that one or more tires on the car is underinflated. When a TPMS warning like this has occured, it's important to remedy the issue promptly, to ensure safe operation of the vehicle.
The first step to resolving a tire pressure issue is a manual check of the tire pressure in all four tires. This ensures that the TPMS is functioning properly, by providing a back-up reading of the tire pressure for the tires on a vehicle.
Once the pressure has been manually read for all tires, the recommended tire pressure for the vehicle must be determined.
This information is usually provided on the information sticker located inside the vehicle's door panel, as well as in the vehicle owner's manual.
Air should be added to any tires with low pressure as soon as possible, according to the vehicle manufacturer's recommendations. The TPMS light should turn off, once the TPMS detects that the tire pressure in all tires is within an acceptable range.
Note: It is important to use the tire pressure inflation guidelines that have been provided by the vehicle manufacturer, when inflating tires, since the maximum tire inflation ratings printed on each tire wall may be outside of a safe operating range for your specific vehicle.