2007 Jeep Grand Cherokee Owner's Manual - Page 259

STARTING AND OPERATING 259 In high ambient temperatures with sustained high engine speed and load, an upshift followed shortly thereafter by a downshift may occur. This is a normal part of the overheat protection strategy when operating in the "Tow/Haul" mode. The transmission will downshift from Overdrive to the most desirable gear if the accelerator pedal is fully depressed at vehicle speeds above approximately 35 mph (56 km/h). When To Use "TOW/HAUL" Mode - If Equipped When driving in hilly areas, towing a trailer, carrying a heavy load, etc., and frequent transmission shifting occurs, press the "TOW/HAUL" button. This will improve performance and reduce the potential for transmission overheating or failure due to excessive shifting. When operating in "TOW/HAUL" mode, the transmission will shift to direct gear and Overdrive will be enabled under steady cruise conditions. 5 Tow/Haul Button The "TOW/HAUL" light will illuminate in the instrument cluster to indicate when the switch has been activated. Pressing the switch a second time restores normal operation. If the "TOW/HAUL" mode is desired, the switch must be pressed each time the engine is started.