2005 Jeep Grand Cherokee Owner's Manual - Page 131

UNDERSTANDING YOUR INSTRUMENT PANEL 131 either too high or too low. Examine the gages carefully, and follow the instructions above for each indicated problem. NOTE: When the ignition switch is turned to OFF, the fuel gage, voltmeter, oil pressure, and temperature gages will not show any readings. When the engine is not running, turn the ignition switch to ON to obtain accurate readings. 12. Part Time Indicator Light This light alerts the driver that the vehicle is in the PART TIME four-wheel drive mode, and the front and rear driveshafts are mechanically locked together forcing the front and rear wheels to rotate at the same speed. 13. Transmission Over Temperature Warning Light This light indicates that there is excessive transmission fluid temperature that might occur with severe usage such as trailer towing or snow plowing. If this light comes on, stop the vehicle and run the engine at idle or faster, with the transmission in N (Neutral) until the light goes off. 14. Temperature Gage Indicates engine coolant temperature. Any reading within the normal range indicates that the cooling system is operating satisfactorily. The gage pointer will likely indicate a higher temperature (above center scale) when driving in hot weather, up mountain grades, or when towing a trailer. It should not be allowed to exceed the upper limits of the normal operating range. If the pointer rises to the 260° (Hot) mark, pull over and stop the vehicle. Do not turn the engine off. Idle the vehicle with the air conditioning turned off, until the pointer drops back into the normal range. 4