2013 Lincoln Navigator Owner Manual Printing 1 - Page 189

Starting and Stopping the Engine 189 We recommend that you do the following for safe and correct operation: • Use a 16-gauge outdoor extension cord that is product certified by Underwriter's Laboratory or Canadian Standards Association. This extension cord must be able to be used outdoors, in cold temperatures, and be clearly marked Suitable for Use with Outdoor Appliances. Never use an indoor extension cord outdoors; it could result in an electric shock or become a fire hazard. • Use as short an extension cord as possible. • Do not use multiple extension cords. • Make sure that when in operation, the extension cord plug and the heater cord plug connections are free and clear of water. This could cause an electric shock or fire. • Make sure your vehicle is parked in a clean area, clear of combustibles. • Make sure the heater, heater cord and extension cord are firmly connected. • Check for heat anywhere in the electrical hookup once the system has been operating for approximately 30 minutes. • Make sure the system is unplugged and properly stowed before driving your vehicle. Make sure the protective cover seals the prongs of the block heater cord plug when not in use. • Make sure the heater system is checked for proper operation before winter. Using the Engine Block Heater Make sure the receptacle terminals are clean and dry prior to use. Clean them with a dry cloth, if necessary. The heater uses 0.4 to 1.0 kilowatt-hours of energy per hour of use. The system does not have a thermostat. It achieves maximum temperature after approximately three hours of operation. Using the heater longer than three hours does not improve system performance and unnecessarily uses electricity. 2013 Navigator (nav) Owners Guide gf, 1st Printing USA (fus)