2015 Jeep Grand Cherokee Owner Manual - Page 522

520 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 in a different color on the graphic display to the vehicle's recommended cold tire pressure displayed in the ЉInflate to XXXЉ message. Service Tpm System Warning The Tire Pressure Monitoring Telltale Light will flash on and off for 75 seconds, and remain on solid when a system fault is detected. The system fault will also sound a chime. The DID will display a "SERVICE TPM SYSNOTE: When filling warm tires, the tire pressure may TEM" message for a minimum of five seconds. This need to be increased up to an additional 4 psi (30 kPa) message is then followed by a graphic display, with "- -" above the recommended cold placard pressure in order in place of the pressure value(s), indicating which Tire Pressure Monitoring Sensor(s) is not being received. to turn the Tire Pressure Monitoring Telltale Light off. The system will automatically update, the graphic dis- If the ignition switch is cycled, this sequence will repeat, play of the pressure value(s) will return to its original providing the system fault still exists. If the system fault color and the Tire Pressure Monitoring Telltale Light will no longer exists, the Tire Pressure Monitoring Telltale extinguish once the updated tire pressure(s) have been Light will no longer flash, the ЉSERVICE TPM SYSTEMЉ received. The vehicle may need to be driven for up to 20 message will not be present, and a pressure value will be minutes above 15 mph (24 km/h) to receive this infor- displayed instead of dashes. A system fault can occur by any of the following: mation. 1. Jamming due to electronic devices or driving next to facilities emitting the same Radio Frequencies as the TPM sensors.