JEEP GRAND CHEROKEE 2015 WK2 / 4.G Diesel Supplement Manual

burn Particulate Matter (PM) pollutants, with no input or
interaction on your part.
WARNING!
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be
grass or leaves coming into contact with your exhaust
system. Do not park or operate your vehicle in areas
where your exhaust system can contact anything that
can burn.
Your vehicle has the ability to alert you to additional
maintenance required on your vehicle or engine. Refer to
the following messages that may be displayed on your
Driver Information Display (DID):
•Exhaust Filter XX% Full Safely Drive at Highway
Speeds to Remedy— This message will be displayed
on the Driver Information Display (DID) if the exhaust
particulate filter reaches 80% of its maximum storagecapacity. Under conditions of exclusive short duration
and low speed driving cycles, your diesel engine and
exhaust after-treatment system may never reach the
conditions required to cleanse the filter to remove the
trapped PM. If this occurs, the “Exhaust Filter XX%
Full Safely Drive at Highway Speeds to Remedy”
message will be displayed in the DID. If this message
is displayed, you will hear one chime to assist in
alerting you of this condition. By simply driving your
vehicle at highway speeds for up to 20 minutes, you
can remedy the condition in the particulate filter
system and allow your diesel engine and exhaust
after-treatment system to cleanse the filter to remove
the trapped PM and restore the system to normal
operating condition.
•Exhaust System — Regeneration In Process Exhaust
Filter XX% Full— This message indicates that the3
UNDERSTANDING YOUR INSTRUMENT PANEL 29

Diesel Particulate Filter (DPF) is self-cleaning. Main-
tain your current driving condition until regeneration
is completed.
•Exhaust System — Regeneration Completed— This
message indicates that the Diesel Particulate Filter
(DPF) self-cleaning is completed. If this message is
displayed, you will hear one chime to assist in alerting
you of this condition.
•Exhaust Service Required — See Dealer Now— This
messages indicates regeneration has been disabled due
to a system malfunction. At this point the engine
Powertrain Control Module (PCM) will register a fault
code, the instrument panel will display a MIL light.
CAUTION!
See your authorized dealer, as damage to the exhaust
system could occur soon with continued operation.•Exhaust Filter Full — Power Reduced See Dealer—
This message indicates the PCM has derated the
engine to limit the likelihood of permanent damage to
the after-treatment system. If this condition is not
corrected and a dealer service is not performed, exten-
sive exhaust after-treatment damage can occur. To
correct this condition it will be necessary to have your
vehicle serviced by your local authorized dealer.
NOTE:Failing to follow the oil change indicator, chang-
ing your oil and resetting the oil change indicator by 0
miles remaining will prevent the diesel exhaust filter
from performing it’s cleaning routine. This will shortly
result in a Malfunction Indicator Light (MIL) and re-
duced engine power. Only an authorized dealer will be
able to correct this condition.
30 UNDERSTANDING YOUR INSTRUMENT PANEL

CAUTION!
See your authorized dealer, as damage to the exhaust
system could occur soon with continued operation.
Diesel Exhaust Fluid (DEF) Warning Messages
Your vehicle will begin displaying warning messages
when the DEF level reaches a driving range of approxi-
mately 1500 miles. If the following warning message
sequence is ignored, your vehicle may not restart unless
DEF is added with in the displayed mileage shown in the
DID message.
•Engine Will Not Restart in XXXX mi DEF Low Refill
Soon— This message will display when DEF driving
range is less than 1500 miles, DEF fluid top off is
required with in the displayed mileage. The message
will be displayed in the DID during vehicle start up
with the current allowed mileage and accompanied bya single chime. The remaining mileage can be pulled
up anytime by way of the “Messages” list within the
DID
•Engine Will Not Restart in XXXX mi Refill DEF—
This message will display when DEF driving range is
less than 311 miles. It is also displayed at 249 miles, 186
miles, and 124 miles. Continuous Display starts at 124
miles. DEF fluid top off is required with in the dis-
played mileage. The message will be displayed in the
DID during vehicle start up with an updated distance
mileage, and it will be accompanied by a single chime.
Stating at 100 miles, remaining range will be continu-
ously displayed while operating the vehicle. Chimes
will also accompany the 75, 50 and 25 mile remaining
distances. The DEF Low telltale will be on continu-
ously until DEF fluid is topped off.
•Engine Will Not Restart Refill DEF— This message
will display when the DEF driving range is less than 1
3
UNDERSTANDING YOUR INSTRUMENT PANEL 31

mile, DEF fluid top off is required or the engine will
not restart. The message will be displayed in the DID
during vehicle start up, and it will be accompanied by
a single chime. The DEF Low telltale will be illumi-
nated continuously until DEF fluid tank is filled with a
minimum of two gallons of DEF.
Diesel Exhaust Fluid (DEF) Fault Warning
Messages
There are different messages which are displayed if the
vehicle detects that the DEF system has been filled with
a fluid other than DEF, has experienced component
failures, or when tampering has been detected.
When the DEF system needs to be serviced the following
warnings will display:
•Service DEF System See Dealer— This message will
display when the fault is initially detected and eachtime the vehicle is started. The message will be accom-
panied by a single chime and the Malfunction Indica-
tor Light. We recommend you drive to your nearest
authorized dealer and have your vehicle serviced
immediately. If not corrected in 30 miles, vehicle will
enter the “Engine Will not restart in XXXmi Service
DEF See dealer” warning stage and message.
•Incorrect DEF Detected See Dealer— This message
will display if the DEF system has detected the incor-
rect fluid has been introduced to the DEF tank. The
message will be accompanied by a single chime. We
recommend you drive to your nearest authorized
dealer and have your vehicle serviced immediately. If
not corrected in 30 miles, vehicle will enter the Engine
Will not restart in XXX mi Service DEF See dealer
warning stage and message.
32 UNDERSTANDING YOUR INSTRUMENT PANEL

•Engine Will Not Restart in XXX mi Service DEF See
Dealer— This message is first displayed if the fault
detected is not serviced after 30 miles of operation. It is
also displayed at 250 miles 186 miles and 124 miles.
System service is required within the displayed mile-
age. The message will be displayed in the DID during
vehicle start up with an updated distance mileage, and
it will be accompanied by a single chime. Starting at
124 miles, remaining range will be continuously dis-
played while operating the vehicle. Chimes will also
accompany the 75, 50 and 25 mile remaining distances.
We recommend you drive to your nearest authorized
dealer and have your vehicle serviced immediately.•Engine Will Not Restart Service DEF System See
Dealer— This message will display if DEF system
issue detected is not serviced during the allowed
period. Your engine will not restart unless your vehicle
is serviced by your authorized dealer. This message
will be displayed when under 1 mile until engine will
not start and each time the vehicle is started, and will
be continuously displayed. The message will be ac-
companied by a single chime. Your Malfunction Indi-
cator Light will be continuously illumined. We highly
recommend you drive to your nearest authorized
dealer if the message appears while engine is running.
3
UNDERSTANDING YOUR INSTRUMENT PANEL 33

•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

▫Trailer Towing Weights (Maximum Trailer Weight
Ratings)............................56
▫Trailer And Tongue Weight...............56
▫Towing Requirements...................57
▫Towing Tips..........................62
DIESEL EXHAUST FLUID.................64
▫System Overview......................64ADDING FUEL.........................65
▫Avoid Using Contaminated Fuel............68
▫Bulk Fuel Storage — Diesel Fuel...........68
▫Diesel Exhaust Fluid Storage..............69
▫Adding Diesel Exhaust Fluid..............70
36 STARTING AND OPERATING

STARTING PROCEDURES
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 between such intervals
will protect the starter from overheating.
WARNING!
•When leaving the vehicle, always remove the key
fob from the ignition and lock your vehicle. If
equipped with Keyless Enter-N-Go™, always
make sure the keyless ignition node is in “OFF”
mode, remove the Key Fob from the vehicle and
lock the vehicle.
•Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Leaving children in
(Continued)
WARNING!(Continued)
a vehicle unattended is dangerous for a number of
reasons. A child or others could be seriously or
fatally injured. Children should be warned not to
touch the parking brake, brake pedal or the gear
selector.
•Do not leave the Key Fob in or near the vehicle (or
in a location accessible to children), 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.
NOTE:Engine start up in very low ambient temperature
could result in evident white smoke. This condition will
disappear as the engine warms up.
4
STARTING AND OPERATING 37

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