Automatic Transmission; Extreme Cold Weather - Jeep 2014 Grand Cherokee Owner's Manual

32 STARTING AND OPERATING
CAUTION! (Continued)
• If the "Water in Fuel Indicator Light" remains on,
DO NOT START 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" for
further information.

Automatic Transmission

Start the engine with the shift lever in the NEUTRAL or
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 rou-
tinely 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.
NOTE: The engine block heater cord is a factory in-
stalled 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 housing aids in
preventing fuel gelling. It is controlled by a built-in
thermostat.
• A Diesel Pre-Heat system both improves engine start-
ing and reduces the amount of white smoke generated
by a warming engine.