2004 Jeep Grand Cherokee Owner's Manual - Page 178

178 STARTING AND OPERATING After Starting The idle speed will automatically decrease as the engine warms up. The engine block heater cord is located: • 6-cylinder engine - bundled and fastened to the injector rail between injectors 1 and 2. • V-8 engine - coiled and strapped to the transmission filler tube. CAUTION! Long periods of engine idling, especially at high engine speeds can cause excessive exhaust temperatures which can damage your vehicle. Do not leave your vehicle unattended with the engine running. ENGINE BLOCK HEATER - IF EQUIPPED The engine block heater warms engine coolant and permits quicker starts in cold weather. Connect the cord to a standard 110-115 volt AC electrical outlet with grounded, three wire extension cord. Use the heater when temperatures below 0°F (-18°C) are expected to last for several days. WARNING! Remember to disconnect the cord before driving. Damage to the 110-115 volt AC electrical cord could cause electrocution.