2011 Jeep Grand Cherokee Owner Manual - Page 420

418 STARTING AND OPERATING The TPMS consists of the following components: • Receiver Module • Four Tire Pressure Monitoring Sensors • Tire Pressure Monitoring Telltale Light will automatically update and the Tire Pressure Monitoring Telltale Light will extinguish, once the updated tire pressures have been received. The vehicle may need to be driven for up to 20 minutes above 15 mph (24 km/h) to receive this information. The Tire Pressure Monitoring Telltale Light will flash on A low spare tire will not cause the Tire Pressure Moniand off for 75 seconds, and remain on solid when a toring Telltale Light to illuminate, a warning message to system fault is detected. In addition, a "SERVICE TPM appear, or the chime to sound. SYSTEM" message may be displayed for approximately The Tire Pressure Monitoring Telltale Light will 5 seconds when a system fault is detected, and a chime illuminate in the instrument cluster, a "TIRE LOW will sound. If the ignition switch is cycled, this sequence PRESSURE" message will display in the instru- will repeat, providing the system fault still exists. The ment cluster for 5 seconds, and an audible chime will be Tire Pressure Monitoring Telltale Light will turn off when activated, when one or more of the four active road tire the fault condition no longer exists. A system fault can pressures are low. Should this occur, you should stop as occur by any of the following: soon as possible, check the inflation pressure of each tire 1. Jamming due to electronic devices or driving next to on your vehicle, and inflate each tire to the vehicle's facilities emitting the same Radio Frequencies as the TPM recommended cold placard pressure value. The system sensors.