2015 Jeep Grand Cherokee User Guide SRT - Page 178

DIESEL CAUTION! If the "Water in Fuel Indicator Light" remains on, DO NOT START the engine before you drain the water from the fuel filters to avoid engine damage. Refer to "Maintenance Procedures/Draining Fuel/Water Separator Filter" in "Maintaining Your Vehicle" in your Diesel Supplement on the DVD for further information. Extreme Cold Weather The engine block heater is a resistance heater installed in the water jacket of the engine. It requires a 110-115 Volt AC electrical outlet with a grounded, three-wire extension cord. Its use is recommended for environments that routinely fall below -10°F. It should be used when the vehicle has not been running overnight or longer periods and should be plugged in two hours prior to start. Its use is required for cold starts with temperatures under -20°F. A 12 Volt heater built into the fuel filter housing aids in preventing fuel gelling. It is controlled by a built-in thermostat. A Diesel Pre-Heat system both improves engine starting and reduces the amount of white smoke generated by a warming engine. NOTE: The engine block heater cord is a factory installed option. If your vehicle is not equipped, heater cords are available from your authorized MOPAR® dealer. Water In Fuel Message If a Water In Fuel message or indicator appears in the cluster and a chime sounds five times, the fuel/water separator will need to be drained immediately to prevent engine damage. Refer to "Draining Fuel Water Separator" in this guide for draining instructions or see your dealer. 176