What does the TPMS dashboard light/warning indicate?
The light will illuminate when a tire is low, and should eventually go out after a tire has been inflated to its recommended pressure according to the vehicle’s door placard. After starting a vehicle, a TPMS icon will turn on for a few seconds, however, if it stays on, it indicates that one or more of the tires on the vehicle is at least 25% below the recommended pressure. If the light flashes for approximately one to two minutes, it indicates there is a malfunction in the TPMS system.
There are numerous situations that can cause a TPMS warning light to come on or flash. Some TPMS problems include:
Sensor batteries may be dead
Valve itself may have physical damage, corrosion or missing components
The TPMS system voltage supply, wiring or internal electronics may not be functioning properly
The tires were serviced or rotated and the relearn procedure was not properly performed