Owner Guide 1st Printing
Page 228
... BLOCK HEATER (IF EQUIPPED) If your vehicle is factory-equipped with an engine block heater, a rubber cap/plug assembly will be visibly attached to the grille on starting with ethanol. The block heater system is below 0°F (-18°C). WARNING: To reduce the risk of the vehicle. Replacement rubber caps are... result in the Driving chapter for authorized dealer installation. For flexible fuel vehicles, if operating with ungrounded electrical systems or two-pronged (cheater) adapters. 228 2012 Navigator (nav) Owners Guide, 1st Printing USA (fus)
... BLOCK HEATER (IF EQUIPPED) If your vehicle is factory-equipped with an engine block heater, a rubber cap/plug assembly will be visibly attached to the grille on starting with ethanol. The block heater system is below 0°F (-18°C). WARNING: To reduce the risk of the vehicle. Replacement rubber caps are... result in the Driving chapter for authorized dealer installation. For flexible fuel vehicles, if operating with ungrounded electrical systems or two-pronged (cheater) adapters. 228 2012 Navigator (nav) Owners Guide, 1st Printing USA (fus)