Diesel Engine Starting; Starting And Operating Your Diesel Engine In Very Cold Environments; Diesel Selective Catalytic Reduction (Scr) - Jeep Grand Cherokee 2018 Quick Reference Manual

DIESEL

Diesel Engine Starting

• Your vehicle is equipped with state-of-the art
ceramic glow plugs to ensure quick vehicle
starting.
• Activation of these glow plugs may result in
some delay of vehicle cranking until glow
plug warming is complete. This length of
time may be less than 1 second in warm
environments with a warm engine and may
be as long as 5 seconds in very cold environ-
ments with a cold engine.
• There are no additional steps required to
cycle your vehicle's glow plugs; the entire
pre-heat process is automated.
• To start your vehicle, press and hold the
brake pedal while pressing the ENGINE
START/STOP button once.
• The "Wait to Start" telltale will be illumi-
nated in the instrument cluster.
• When the "Wait to Start" telltale goes out,
vehicle cranking will commence.
• Remote start operation of your vehicle will
also automatically activate the glow plugs as
required and no additional steps are
required.
Starting And Operating Your
Diesel Engine In Very Cold
Environments
• Your vehicle has been designed to operate in
very cold environment's but some cold
weather precautions may be required.
• Climatized fuel or fuel treatment may be
required for operation with temperatures un-
der -10°F (-23°C) (see "Fuel Operating
Range/ Requirements" section of the Own-
er's Manual).
• Use of an engine block heater is recom-
mended for routine operation under -10°F
(-23°C) and is required for cold starting
under -20°F (-28°C).
• Your vehicle is equipped with a factory-
installed block heater. Depending on vehicle
ordering location and options, it may or may
not have the AC cord for this heating ele-
ment. If not, it may be purchased and in-
stalled by your authorized MOPAR dealer.
• For further information, and applicable
warnings and cautions, please refer to the
Diesel Supplement at www.mopar.com/
en-us/care/owners-manual.html (U.S. Resi-
dents) or www.owners.mopar.ca (Canadian
Residents).
Diesel Selective Catalytic
Reduction (SCR)
• Your Jeep is equipped with an SCR system to
reduce Nitrous Oxide (NOx) exhaust emis-
sions and meet the latest EPA and California
exhaust emissions requirements.
• This system uses Diesel Exhaust Fluid (DEF)
to convert NOx to harmless gases prior to
release from the exhaust system.