2007 Jeep Grand Cherokee Owner's Manual - Page 302

302 STARTING AND OPERATING Should a low tire condition occur on any of the four active road tire(s), you should stop as soon as possible, and inflate the low tire(s) that is flashing on the graphic display to the vehicle's recommended cold tire pressure. The system will automatically update, the graphic display of the pressure value(s) will stop flashing, and the "Tire Pressure Monitoring Telltale Light" will extinguish once the updated tire pressure(s) have been received. The vehicle may need to be driven for up to 10 minutes above 15 mph (24 km/h) to receive this information. Service Tire Pressure System The "Tire Pressure Monitoring Telltale Light" will flash on and off for 60 seconds, and an audible chime will sound when a system fault is detected. The flash cycle will repeat every ten minutes, without an audible chime, until the fault condition no longer exists. The EVIC will display the "SERVICE TIRE PRESS. SYSTEM" message for 3 seconds. This text message is then followed by a graphic, with "- -" displayed for the pressure value(s) indicating which of the Tire Pressure Monitoring Sensor(s) is not being received. Refer to "Electronic Vehicle Information Center (EVIC)" in Section 4 of this manual. NOTE: Your system can be set to display pressure units in PSI, kPa, or BAR.