2007 Jeep Grand Cherokee Owner's Manual - Page 301

STARTING AND OPERATING 301 Tire Pressure Monitoring Low Pressure Warnings The "Tire Pressure Monitoring Telltale Light" will illuminate in the instrument cluster, and an audible chime will be activated when one or more of the four active road tire pressures are low. The audible chime will sound once every ignition cycle for each condition that it detects. In addition, the Electronic Vehicle Information Center (EVIC) will display one or more Low Pressure messages (Left Front, Left Rear, Right Front, Right Rear) for 3 seconds, and a graphic display of the pressure value(s) with the low tire(s) flashing. Refer to "Electronic Vehicle Information Center (EVIC)" in Section 4 of this manual. NOTE: If your vehicle is equipped with a matching full size spare tire, a low matching full size spare tire will set the "SPARE LOW PRESSURE" text message, but it will not cause the "Tire Pressure Monitoring Telltale Light" to illuminate or the chime to sound. NOTE: If your vehicle is equipped with a non-matching full size spare tire, a low non-matching full size spare tire will not display any text messages, or cause the "Tire Pressure Monitoring Telltale Light" to illuminate or the chime to sound. NOTE: Your system can be set to display pressure units in PSI, kPa, or BAR. 5