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ENGINE 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 the
front of the vehicle. For factory
equipped, this assembly is loose
shipped in-vehicle for authorized
dealer installation. If not
factory-equipped, the engine block
heater can be purchased through
authorized dealer accessories.
Replacement rubber caps are
available through an authorized
dealer, 3L1Z-6E088-AA.
An engine block heater warms the engine coolant which aids in starting
and allows the heater/defroster system to respond quickly. If your vehicle
is equipped with this system, your equipment includes a heater element
which is installed in your engine block and a wire harness which allows
the user to connect the system to a grounded 120 volt A/C electrical
source. The block heater system is most effective when outdoor
temperatures reach below 0°F (-18°C).
For flexible fuel vehicles, if operating with E
85
ethanol, an engine block
heater must be used if ambient temperature is below 0°F (-18°C).
See
Cold weather starting
in the
Driving
chapter for more information
on starting with ethanol.
WARNING:
Failure to follow engine block heater instructions
could result in property damage or physical injury.
WARNING:
To reduce the risk of electrical shock, do not use
your heater with ungrounded electrical systems or two-pronged
(cheater) adapters.
Driving
228
2012 Navigator
(nav)
Owners Guide, 1st Printing
USA
(fus)