Tire Pressure Monitoring System: Notes
The Tire Pressure Monitor (TPM) system uses wireless technology to monitor tire air pressure in all 5 tires (this includes the full-size spare). There is a sensor (transmitter) in each of the vehicles 5 wheels. The system alerts the driver when tire pressure falls outside predetermined thresholds (pressure too low or too high). A message is then displayed on the Electronic Vehicle Information Center (EVIC) located in the overhead console. These transmissions occur once every minute at speeds over 20 MPH (32 KM/H). The TPM system remains active even if it is not displayed in the EVIC. Tire air pressures in the 4 road tires are displayed on the EVIC when chosen. Pressure in the spare tire, although monitored, is not displayed on the EVIC. If any road tire pressure has exceeded the low or high pressure threshold, the TPM system will display a message on the EVIC and sound a chime. It will then go into the tire pressure display screen and flash the pressure value of the tire that is low or high. This will be displayed for the rest of the ignition cycle, or until either the C/T, MENU, STEP or RESET button is pressed. See TIRE PRESSURE THRESHOLDS table.
If a road tire is replaced by the spare, the TPM system will detect the swap automatically (after ignition has been cycled) and display "SPARE SWAP DETECTED" along with a chime. This could take up to 10 minutes with the vehicle speed above 20 MPH (32 KM/H).