Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle starts up as long as the malfunction exists.
When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevents the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly. Each tire should be checked monthly when the temperature of the tires is about the same as ambient air temperature and set to the recommended inflation pressure as specified on the tire pressure label => page 242.
The factory supplied spare whee l is equipped with a sensor for the tire pressure monitoring system. As long as the spare wheel is not mounted, the tire pressure of this tire will not be monitored. The tire pressure monitoring system helps the driver to keep an eye on tire pressures. But the driver still has the responsibility for maintaining the correct tire pressure.