Tire Pressure Monitoring System (TPMS) Warning Indicator
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The instrument cluster receives the TPMS messages from the VSM over the communication network. If the VSM determines that the tire pressure has exceeded the limits, a message is sent to the instrument cluster to turn on the TPMS warning indicator. If a TPMS fault condition exists, the VSM sends a message to the instrument cluster to flash the TPMS warning indicator.