Starting The Engine - 3.0L Diesel Engine; Automatic Transmission; Extreme Cold Weather - Jeep Grand Cherokee 2018 Manual

STARTING THE ENGINE — 3.0L
DIESEL ENGINE
Before starting your vehicle, adjust your seat,
both inside and outside mirrors, and fasten your
seat belts.
The starter is allowed to crank for up to 30-
second intervals. Waiting a few minutes be-
tween such intervals will protect the starter from
overheating.
WARNING!
• Before exiting a vehicle, always come to a
complete stop, then shift the automatic
transmission into PARK and apply the
parking brake.
• Always make sure the keyless ignition
node is in the OFF mode, key fob is
removed from the vehicle and vehicle is
locked.
• Never leave children alone in a vehicle, or
with access to an unlocked vehicle. Leav-
ing children in a vehicle unattended is
dangerous for a number of reasons. A child
or others could be seriously or fatally in-
jured. Children should be warned not to
touch the parking brake, brake pedal or the
gear selector.
16
WARNING! (Continued)
• Do not leave the key fob in or near the
vehicle, or in a location accessible to chil-
dren, and do not leave the ignition of a
vehicle equipped with Keyless Enter-N-Go
in the ACC or ON/RUN mode. A child could
operate power windows, other controls, or
move the vehicle.
• Do not leave children or animals inside parked
vehicles in hot weather. Interior heat build-up
may cause serious injury or death.
NOTE:
Engine start up in very low ambient temperature
could result in evident white smoke. This condi-
tion will disappear as the engine warms up.
CAUTION!
• The engine is allowed to crank as long as
30 seconds. If the engine fails to start
during this period, please wait at least two
minutes for the starter to cool before re-
peating start procedure.
• If the "Water in Fuel Indicator Light" re-
mains on, DO NOT START engine before
you drain the water from the fuel filters to
avoid engine damage. Refer to "Draining
Fuel/Water Separator Filter" in "Servicing
(Continued)
And Maintenance" for further information.

Automatic Transmission

Start the engine with the transmission gear
selector in the PARK position. Apply the brake
before shifting to any driving range.

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 (-23°C). 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 (-28°C).
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.
• A 12 Volt heater built into the fuel filter hous-
ing aids in preventing fuel gelling. It is con-
trolled by a built-in thermostat.
• A Diesel Pre-Heat system both improves en-
gine starting and reduces the amount of white
smoke generated by a warming engine.