2012 Jeep Grand Cherokee Owner Manual SRT - Page 471

STARTING AND OPERATING 469 The EVIC will also display a ЉSERVICE TPM SYSTEMЉ message for a minimum of five seconds when a system fault is detected possibly related to the trigger component an incorrect sensor location fault. In this case, the ЉSERVICE TPM SYSTEMЉ message is then followed by a graphic display, with pressure values still shown. This indicates the pressure values are still being received from the TPM Sensors but they may not be located in the 1. Jamming due to electronic devices or driving next to correct vehicle position. However, the system still needs facilities emitting the same Radio Frequencies as the TPM to be serviced as long as the ЉSERVICE TPM SYSTEMЉ sensors. message exists. 2. Installing some form of aftermarket window tinting NOTE: There is no tire pressure monitoring sensor in that affects radio wave signals. the spare tire. The TPMS will not be able to monitor the 3. Lots of snow or ice around the wheels or wheel tire pressure. If you install the spare tire in place of a road housings. tire that has a pressure below the low-pressure warning limit, upon the next ignition switch cycle, the Tire Pres4. Using tire chains on the vehicle. sure Monitoring Telltale Light will remain ON, a chime 5. Using wheels/tires not equipped with TPM sensors. will sound, and the EVIC will still display a "flashing" pressure value in the graphic display. After driving the If the ignition switch is cycled, this sequence will repeat, providing the system fault still exists. If the system fault no longer exists, the Tire Pressure Monitoring Telltale Light will no longer flash, the ЉSERVICE TPM SYSTEMЉ message will not be present, and a pressure value will be displayed instead of dashes. A system fault can occur by any of the following: 5