2010 Jeep Grand Cherokee Owner's Manual - Page 243

242 STARTING AND OPERATING release it as soon as the starter engages. The starter motor will disengage automatically in 10 seconds. Once this occurs, release the accelerator pedal, turn the ignition switch to the LOCK position, wait 10 to 15 seconds, then repeat the "Normal Starting" procedure. electrical outlet with a grounded, three-wire extension cord. Use the heater when temperatures below 0°F (-18°C) are expected to last for several days. The block heater must be plugged in at least one hour to have an adequate warming effect on the coolant. The engine block heater cord is located: • 3.7L Engine - coiled and strapped to the engine oil dipstick tube. CAUTION! To prevent damage to the starter, wait 10 to 15 seconds before trying again. After Starting The idle speed is controlled automatically, and it will • 5.7L Engine - bundled and fastened to the injector harness. decrease as the engine warms up. ENGINE BLOCK HEATER - IF EQUIPPED The engine block heater warms the engine, and permits quicker starts in cold weather. Connect the heater cord to a ground-fault interrupter protected 110-115 Volt AC WARNING! Remember to disconnect the cord before driving. Damage to the 110-115 Volt AC electrical cord could cause electrocution.