2015 JEEP GRAND CHEROKEE heater

•Engine Will Not Start Service DEF System See
Dealer— This message will display when the fault
detected is not serviced after the Engine will not restart
Service DEF System See Dealer message is displayed
on the next subsequent restart. Your engine will not
start unless you vehicle is serviced by your authorized
dealer. The message will be accompanied by a single
chime. Your Malfunction Indicator Light will be con-
tinuously illuminated. If the message appears and you
can not start the engine, we recommend you have your
vehicle towed to your nearest authorized dealer im-
mediately.NOTE:
•The gauge may take up to five seconds to update after
adding a gallon or more of Diesel Exhaust Fluid (DEF)
to the DEF tank. If you have a fault related to the DEF
system, the gauge may not update to the new level. See
your authorized dealer for service.
•The DEF gauge may also not immediately update after
a refill if the temperature of the DEF fluid is below 12F
(-11C). The DEF line heater will possibly warm up the
DEF fluid and allow the gauge to update after a period
of run time. Under very cold conditions, it is possible
that the gauge may not reflect the new fill level for
several drives.
34 UNDERSTANDING YOUR INSTRUMENT PANEL

STARTING AND OPERATING
CONTENTS
STARTING PROCEDURES.................37
▫Automatic Transmission.................38
▫Extreme Cold Weather...................38
▫Normal Starting Procedure — Keyless
Enter-N-Go...........................39
▫Starting Fluids........................40
NORMAL OPERATION...................41
▫Cold Weather Precautions................41
▫Engine Idling.........................43
▫Stopping The Engine....................43▫Cooling System Tips — Automatic
Transmission..........................44
ENGINE BLOCK HEATER — IF EQUIPPED....45
FUEL REQUIREMENTS...................46
▫Fuel Specifications.....................47
▫Biodiesel Fuel Requirements...............48
TRAILER TOWING......................51
▫Common Towing Definitions..............51
▫Trailer Hitch Classification...............554

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 repeating start procedure.
•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 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 exten-
sion 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 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.
38 STARTING AND OPERATING

NORMAL OPERATION
Observe the following when the diesel engine is operat-
ing.
•All message center lights are off.
•Malfunction Indicator Light (MIL) is off.
•Engine Oil Pressure telltale is not illuminated.
•Voltmeter operation:
The voltmeter may show a gauge fluctuation at various
engine temperatures. This is caused by the glow plug
heating system. The number of cycles and the length of
the cycling operation is controlled by the engine control
module. Glow plug heater operation can run for several
minutes, once the heater operation is complete the volt-
meter needle will stabilize.
Cold Weather Precautions
Operation in ambient temperature below 32°F (0°C) may
require special considerations. The following charts sug-
gest these options:
Fuel Operating Range
NOTE:Use “Ultra Low Sulfur Diesel Fuels”ONLY.
*No. 1 Ultra Low Sulfur Diesel Fuel should only be used
where extended arctic conditions (-10°F/-23°C) exist.
Fuel Operating Range Chart
4
STARTING AND OPERATING 41

Do Not Operate The Engine With Failed Parts
All engine failures give some warning before the parts
fail. Be on the alert for changes in performance, sounds,
and visual evidence that the engine requires service.
Some important clues are:
•engine misfiring or vibrating severely
•sudden loss of power
•unusual engine noises
•fuel, oil or coolant leaks
•sudden change, outside the normal operating range, in
the engine operating temperature
•excessive smoke
•oil pressure drop
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms engine coolant and
permits quicker starts in cold weather. Connect the heater
cord to a ground-fault interrupter protected 110–115 Volt
AC electrical outlet with a grounded, three-wire exten-
sion 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 for long periods of time and
should be plugged in two hours prior to start. Its use is
required for cold starts with temperatures under -20°F
(-28°C).
To ensure reliable starting at these temperatures, use of
an externally powered electric engine block heater (avail-
able from your authorized dealer) is recommended.
4
STARTING AND OPERATING 45

WARNING!
Remember to disconnect the cord before driving.
Damage to the 110–115 Volt electrical cord could
cause electrocution.
NOTE:The block heater will require 110 Volts AC and
6.5 Amps to activate the heater element.
FUEL REQUIREMENTS
Use good quality diesel fuel from a reputable supplier in
your vehicle. Federal law requires that you must fuel this
vehicle with Ultra Low Sulfur Highway Diesel fuel (15
ppm Sulfur maximum) and prohibits the use of Low
Sulfur Highway Diesel fuel (500 ppm Sulfur maximum)
to avoid damage to the emissions control system.
For most year-round service, No. 2 diesel fuel meeting
ASTM (formerly known as the American Society for
Testing and Materials) specification D-975 Grade S15 willprovide good performance. If the vehicle is exposed to
extreme cold (below 20°F or -7°C), or is required to
operate at colder-than-normal conditions for prolonged
periods, use climatized No. 2 diesel fuel or dilute the No.
2 diesel fuel with 50% No. 1 diesel fuel. This will provide
better protection from fuel gelling or wax-plugging of the
fuel filters.
WARNING!
Do not use alcohol or gasoline as a fuel blending
agent. They can be unstable under certain conditions
and hazardous or explosive when mixed with diesel
fuel.
Diesel fuel is seldom completely free of water. To prevent
fuel system trouble, drain the accumulated water from
the fuel/water separator using the fuel/water separator
drain provided on the fuel filter housing. If you buy good
quality fuel and follow the cold weather advice above,
46 STARTING AND OPERATING

2. Insert DEF fill adapter/nozzle into DEF fill inlet.
NOTE:
•The DEF gauge may take up to five seconds to
update after adding a gallon or more of Diesel
Exhaust Fluid (DEF) to the DEF tank. If you have a
fault related to the DEF system, the gauge may not
update to the new level. See your authorized dealer
for service.
•The DEF gauge may also not immediately update
after a refill if the temperature of the DEF fluid is
below 12F (-11C). The DEF line heater will possibly
warm up the DEF fluid and allow the gauge to
update after a period of run time. Under very cold
conditions, it is possible that the gauge may not
reflect the new fill level for several drives.CAUTION!
•To avoid DEF spillage, and possible damage to the
DEF tank from overfilling, do not “top off” the DEF
tank after filling.
•DO NOT OVERFILL. DEF will freeze below 12ºF
(-11ºC). The DEF system is designed to work in
temperatures below the DEF freezing point, how-
ever, if the tank is overfilled and freezes, the
system could be damaged.
•When DEF is spilled, clean the area immediately
with water and use an absorbent material to soak
up the spills on the ground.
•Do not attempt to start your engine if DEF is
accidentally added to the diesel fuel tank as it can
result in severe damage to your engine, including
but not limited to failure of the fuel pump and
injectors.
(Continued)
4
STARTING AND OPERATING 71

Selection Of Coolant (Antifreeze)..........89, 97
Diesel Fuel...............................46
Diesel Fuel Requirements....................46
Bulk Storage Of.........................68
Diesel Fuel System, Re-Priming................85
Disposal
Antifreeze (Engine Coolant).................92
Draining Fuel/Water Separator Filter............81
Driver Information Display
DID ...............................22, 26
Instrument Cluster.......................22
Instrument Cluster Display...............22, 26
Electronic Vehicle Information Center (EVIC)......20
Engine..................................74
Air Cleaner............................78
Block Heater.........................38, 45
Break-In Recommendations.................10Compartment...........................74
Coolant (Antifreeze)......................97
Identification...........................74
Idling................................43
Oil................................76, 97
Oil Filler Cap...........................77
Temperature Gauge......................16
Filters
Air Cleaner............................78
Air Conditioning........................79
Engine Fuel............................81
Engine Oil..........................78, 97
Engine Oil Disposal......................78
Flashers
Turn Signal............................14
Fluid, Brake..............................99
Fluid Capacities...........................96
7
INDEX 113