Jeep WRANGLER 2020 User manual

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2020 WRANGLER
DIESEL SUPPLEMENT
P68457931AA
First Edition
© 2019 FCA US LLC. All Rights Reserved. Tous droits réservés.
Jeep is a registered trademark of FCA US LLC. Jeep est une marque déposée de FCA US LLC.
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WARNING: Operating, servicing and maintaining a passenger vehicle or o-highway
motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide,
phthalates, and lead, which are known to the State of California to cause cancer and
birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust,
do not idle the engine except as necessary, service your vehicle in a well-ventilated area
and wear gloves or wash your hands frequently when servicing your vehicle. For more
information go to www.P65Warnings.ca.gov/passenger-vehicle.
This Owner’s Manual Supplement illustrates and describes the operation of features and equipment that are either standard or optional
on this vehicle. This supplement may also include a description of features and equipment that are no longer available or were not
ordered on this vehicle. Please disregard any features and equipment described in this manual that are not on this vehicle. FCA US LLC
reserves the right to make changes in design and specifications, and⁄or make additions to or improvements to its products without
imposing any obligation upon itself to install them on products previously manufactured.
With respect to any vehicles sold in Canada, the name FCA US LLC shall be deemed to be deleted and the name FCA Canada Inc.
used in substitution therefore.
If you are the first registered retail owner of your vehicle, you may obtain a complimentary printed copy of the Warranty Booklet by
calling 1-877-426-5337 (U.S.) or 1-800-387-1143 (Canada) or by contacting your dealer.
This Owner’s Manual Supplement is intended to familiarize you with the important features of your vehicle. Your most up-to-date
Owner’s Manual Supplement, Navigation⁄Uconnect manuals and Warranty Booklet can be found by visiting the website on the back
cover. U.S. residents can purchase replacement kits by visiting www.techauthority.com and Canadian residents can purchase
replacement kits by calling 1-800-387-1143.
The driver’s primary responsibility is the safe operation of the vehicle. Driving while distracted can result in loss of vehicle control,
resulting in an accident and personal injury. FCA US LLC strongly recommends that the driver use extreme caution when using
any device or feature that may take their attention o the road. Use of any electrical devices, such as cellular telephones,
computers, portable radios, vehicle navigation or other devices, by the driver while the vehicle is moving is dangerous and could
lead to a serious accident. Texting while driving is also dangerous and should never be done while the vehicle is moving. If you
find yourself unable to devote your full attention to vehicle operation, pull o the road to a safe location and stop your vehicle.
Some states or provinces prohibit the use of cellular telephones or texting while driving. It is always the driver’s responsibility to
comply with all local laws.
This Owner’s Manual Supplement has been prepared to help you get acquainted with your new Jeep® brand vehicle and to
provide a convenient reference source for common questions.
Not all features shown in this manual may apply to your vehicle. For additional information, visit www.mopar.com (U.S.),
www.mopar.ca (Canada) or your local Jeep®brand dealer.
Driving after drinking can lead to an accident. Your perceptions are less sharp, your
reflexes are slower and your judgment is impaired when you have been drinking.
Never drink and then drive.
WARNING
Drunk driving is one of the most frequent causes of accidents. Your driving ability can
be seriously impaired with blood alcohol levels far below the legal minimum. If you are
drinking, don’t drive. Ride with a designated non-drinking driver, call a cab, a friend or
use public transportation.
DRIVING AND ALCOHOL

TABLE OF CONTENTS
1
2
3
4
5
6
7
1 INTRODUCTION ............................................................................................................................. 3
2 GETTING TO KNOW YOUR VEHICLE ...................................................................................4
3 GETTING TO KNOW YOUR INSTRUMENT PANEL .......................................................... 5
4 STARTING AND OPERATING ................................................................................................. 14
5 SERVICING AND MAINTENANCE .........................................................................................33
6 TECHNICAL SPECIFICATIONS .............................................................................................. 48
7 INDEX ............................................................................................................................................... 54
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2
INTRODUCTION
A MESSAGE FROM FCA US LLC............................3
GETTING TO KNOW YOUR VEHICLE
REMOTE STARTING SYSTEM ................................ 4
How To Use Remote Start ............................. 4
GETTING TO KNOW YOUR INSTRUMENT PANEL
INSTRUMENT CLUSTER ......................................... 5
Instrument Cluster Descriptions................... 6
INSTRUMENT CLUSTER DISPLAY ......................... 8
Diesel Displays............................................... 8
Fuel Filter Life Reset...................................... 9
Diesel Particulate Filter (DPF) Messages — If
Equipped ........................................................ 9
Diesel Exhaust Fluid (DEF) Warning Messages
10
Diesel Exhaust Fluid (DEF) Fault Warning
Messages ..................................................... 11
WARNING LIGHTS AND MESSAGES ..................12
Yellow Indicator Lights.................................13
STARTING AND OPERATING
STARTING THE ENGINE — 3.0L DIESEL ENGINE .
14
Automatic Transmission.............................. 15
Extreme Cold Weather................................. 15
Normal Starting............................................ 15
Starting Fluids..............................................16
ENGINE BLOCK HEATER — IF EQUIPPED ..........16
ENGINE BREAK-IN RECOMMENDATIONS — 3.0L
DIESEL ................................................................... 17
NORMAL OPERATION — 3.0L DIESEL ENGINE. 17
Cold Weather Precautions .......................... 18
Engine Idling ................................................ 19
Stopping The Engine ................................... 20
Cooling System Tips — Automatic Transmission
21
REFUELING THE VEHICLE — DIESEL ENGINE .. 22
Avoid Using Contaminated Fuel.................. 22
Bulk Fuel Storage — Diesel Fuel................. 22
Diesel Exhaust Fluid .................................... 23
TRAILER TOWING ............................................... 25
Common Towing Definitions ....................... 25
Trailer Hitch Classification .......................... 28
Trailer Towing Weights (Maximum Trailer
Weight Ratings) — Diesel ........................ 28
Trailer And Tongue Weight ......................... 29
Towing Requirements ................................. 29
Towing Tips .................................................. 32
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — DIESEL ENGINE .... 33
Maintenance Plan — Diesel Fuel Up To B5
Biodiesel....................................................... 34
Additional Maintenance — B6 To B20 Biodiesel
36
ENGINE COMPARTMENT ................................... 37
3.0L Diesel Engine ...................................... 37
Checking Oil Level — 3.0L Diesel Engine ... 38
DEALER SERVICE .................................................38
Engine Oil .................................................... 38
Engine Oil Filter .......................................... 39
Engine Air Cleaner Filter ............................ 39
Draining Fuel/Water Separator Filter ....... 41
Underbody Mounted Fuel Filter Replacement
42
Priming If The Engine Has Run Out Of Fuel 43
Intervention Regeneration Strategy —
Message Process Flow ............................... 44
Diesel Exhaust Fluid.................................... 44
Cooling System ............................................ 44
TECHNICAL SPECIFICATIONS
FUEL REQUIREMENTS ........................................48
Diesel Fuel Specifications........................... 48
Biodiesel Fuel Requirements...................... 49
FLUID CAPACITIES ............................................51
FLUIDS AND LUBRICANTS ..................................52
Engine ........................................................ 52
Chassis ....................................................... 53
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3
INTRODUCTION
A MESSAGE FROM FCA US LLC
FCA US LLC welcomes you as a turbocharged diesel-powered vehicle owner. Your diesel vehicle will sound, feel, drive and operate differently from a
gasoline-powered vehicle. It is important that you read and understand this manual.
You may find that some of the starting, operating, and maintenance procedures are different. However, they are simple to follow and careful
adherence to them will ensure that you take full advantage of the features of this engine.
NOTE:
Some aftermarket products may cause severe engine/transmission and/or exhaust system damage. Your vehicle's powertrain control systems can
detect and store information about vehicle modifications that increase horsepower and torque output such as whether or not perfor-
mance-enhancing powertrain components, commonly referred to as downloaders, power boxes, or performance chips have been used.
Any chassis/suspension or tire size modifications to the vehicle will affect the performance of the Adaptive Cruise Control and Forward Collision
Warning System.
This information cannot be erased and will stay in the system's memory even if the modification is removed. This information can be retrieved by FCA
US LLC, and service and repair facilities, when servicing your vehicle. This information may be used to determine if repair will be covered by New Vehicle
Limited Warranty.
There is a probability that the use of a “performance chip” will prohibit the engine from starting. In this instance, the vehicle will need to be serviced by
an authorized dealer in order to return the vehicle to it's factory settings.
When it comes to service, remember that an authorized dealer knows your Jeep® vehicle best, has factory-trained technicians and genuine MOPAR®
parts, and cares about your satisfaction.
1
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4
GETTING TO KNOW YOUR VEHICLE
REMOTE STARTING SYSTEM
This system uses the key fob to start
the engine conveniently from outside
the vehicle while still maintaining
security. The system has a range of
approximately 300 ft (91 m).
NOTE:
The vehicle must be equipped with an auto-
matic transmission to be equipped with
Remote Start.
Obstructions between the vehicle and the
key fob may reduce this range.
The Remote Start system will wait for the
“Wait To Start” yellow telltale to extinguish
before cranking the engine. This allows time
for the engine pre-heat cycle to pre-heat the
cylinder air, and is normal in cold weather.
Refer to “Warning Lights And Messages” in
“Getting To Know Your Instrument Panel” for
further information.
How To Use Remote Start
All of the following conditions must be met
before the engine will remote start:
Gear selector in PARK
Doors closed
Hood closed
Hazard switch off
Brake switch inactive (brake pedal not
pushed)
Battery at an acceptable charge level
PANIC button not pushed
Fuel meets minimum requirement
System not disabled from previous Remote
Start event
Vehicle Security Alarm not active
“Malfunction Indicator/Check Engine” tell-
tale is not illuminated
“Water In Fuel” telltale is not illuminated
“Wait To Start” telltale is not illuminated
WARNING!
Do not start or run an engine in a closed
garage or confined area. Exhaust gas
contains Carbon Monoxide (CO) which is
odorless and colorless. Carbon Monoxide is
poisonous and can cause serious injury or
death when inhaled.
Keep key fobs away from children. Opera-
tion of the Remote Start System, windows,
door locks or other controls could cause
serious injury or death.
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5
GETTING TO KNOW YOUR INSTRUMENT PANEL
INSTRUMENT CLUSTER
Diesel Base Instrument Cluster
3
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6GETTING TO KNOW YOUR INSTRUMENT PANEL
Diesel Premium Instrument Cluster
Instrument Cluster Descriptions
Base Instrument Cluster Descriptions
1. Tachometer
Indicates the engine speed in revolutions
per minute (RPM x 1000).
2. Temperature Gauge
The temperature gauge shows engine
coolant temperature. Any reading within
the normal range indicates that the
engine cooling system is operating satis-
factorily.
CAUTION!
Do not operate the engine with the
tachometer pointer in the red area. Engine
damage will occur.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 7
The pointer will likely indicate a higher
temperature when driving in hot weather,
up mountain grades, or when towing a
trailer. It should not be allowed to exceed
the upper limits of the normal operating
range.
3. Instrument Cluster Display
The instrument cluster display features a
driver-interactive display. Refer to
“Instrument Cluster Display” in this
chapter for further information.
4. Fuel Gauge
The pointer shows the level of fuel in the
fuel tank when the ignition switch is in
the ON/RUN position.
 The fuel pump symbol points to the
side of the vehicle where the fuel filler
door is located.
5. Speedometer
Indicates vehicle speed.
Premium Instrument Cluster Descriptions
1. Tachometer
Indicates the engine speed in revolutions
per minute (RPM x 1000).
2. Instrument Cluster Display
The instrument cluster display features a
driver-interactive display. Refer to
“Instrument Cluster Display” in this
chapter for further information.
3. Speedometer
Indicates vehicle speed.
4. Fuel Gauge
The pointer shows the level of fuel in the
fuel tank when the ignition switch is in
the ON/RUN position.
 The fuel pump symbol points to the
side of the vehicle where the fuel filler
door is located.
5. Temperature Gauge
The temperature gauge shows engine
coolant temperature. Any reading within
the normal range indicates that the
engine cooling system is operating
satisfactorily.
The pointer will likely indicate a higher
temperature when driving in hot weather,
up mountain grades, or when towing a
WARNING!
A hot engine cooling system is dangerous.
You or others could be badly burned by steam
or boiling coolant. You may want to call an
authorized dealer for service if your vehicle
overheats.
CAUTION!
Driving with a hot engine cooling system
could damage your vehicle. If the
temperature gauge reads “H” pull over and
stop the vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops
back into the normal range. If the pointer
remains on the “H”, turn the engine off
immediately and call an authorized dealer for
service.
CAUTION!
Do not operate the engine with the
tachometer pointer in the red area. Engine
damage will occur.
3
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8GETTING TO KNOW YOUR INSTRUMENT PANEL
trailer. It should not be allowed to exceed
the upper limits of the normal operating
range.
INSTRUMENT CLUSTER DISPLAY
Your vehicle is equipped with an instrument
cluster display, which offers useful information
to the driver. With the ignition in the OFF posi-
tion, opening/closing of a door will activate the
display for viewing, and display the total miles
or kilometers in the odometer.
Diesel Displays
When the appropriate conditions exist, the
following messages display in the instrument
cluster display:
Exhaust Filter Nearing Full Safely Drive at
Highway Speeds to Clear
Exhaust Filter Full – Power Reduced See
Dealer
Exhaust System Service Required See Dealer
Exhaust System – Filter XX% Full Service
Required See Dealer
Exhaust System Regeneration in Process
Continue Driving
Exhaust System – Regeneration Completed
Engine Will Not Restart in XXXX mi DEF Low
Refill Soon
Engine Will Not Restart in XXXX mi Refill DEF
Engine Will Not Start Refill DEF
Service DEF System See Dealer
Incorrect DEF Detected See Dealer
Engine Will Not Restart in XXX mi Service DEF
See Dealer
Engine Will Not Restart Service DEF System
See Dealer
Engine Will Not Start Service DEF System See
Dealer
WARNING!
A hot engine cooling system is dangerous.
You or others could be badly burned by steam
or boiling coolant. You may want to call an
authorized dealer for service if your vehicle
overheats.
CAUTION!
Driving with a hot engine cooling system
could damage your vehicle. If the
temperature gauge reads “H” pull over and
stop the vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops
back into the normal range. If the pointer
remains on the “H”, turn the engine off
immediately and call an authorized dealer for
service.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 9
Fuel Filter Life Reset
The cluster will display the “Fuel System Service
Required – See Dealer” or “Service Fuel Filter”
message when the fuel filter maintenance life is
less than 5%. To verify if this is a fuel filter
change event, go to the “Fuel Filter Life” screen
in the “Vehicle Info” menu. When this message
appears, dealers should replace the fuel filters.
NOTE:
Use the steering wheel display controls for the
following procedure(s);
1. Without pushing the brake pedal, cycle the
ignition to the ON/RUN position (do not
start the engine.)
2. Push and release the down arrow button to
scroll downward through the main menu to
“Vehicle Info.”
3. Push and release the right arrow button to
access the ”Fuel Filter Life” screen.
4. Push and hold the OK button for one second
to access the ”Fuel Filter Life Reset” screen.
5. Push and release the down arrow button to
select “Yes,” then push and release the OK
button to select reset of the Fuel Filter Life.
6. Push and release the up arrow button to exit
the instrument cluster display screen.
NOTE:
If the indicator message illuminates when you
start the vehicle, the fuel filter indicator system
did not reset. If necessary, repeat this proce-
dure.
Diesel Particulate Filter (DPF) Messages — If
Equipped
This engine meets all required diesel engine
emissions standards. To achieve these emis-
sions standards, your vehicle is equipped with a
state-of-the-art engine and exhaust system.
These systems are seamlessly integrated into
your vehicle and managed by the Powertrain
Control Module (PCM). The PCM manages
engine combustion to allow the exhaust
system’s catalyst to trap and burn Particulate
Matter (PM) pollutants, with no input or interac-
tion on your part.
Your vehicle has the ability to alert you to addi-
tional maintenance required on your vehicle or
engine. Refer to the following messages that
may be displayed on your instrument cluster
display:
Exhaust Filter Nearing Full Safely Drive at
Highway Speeds to Clear — This message will
be displayed if the exhaust particulate filter
reaches 80% of its maximum storage
capacity. 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. If this
message is displayed, you will hear one
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.
3
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10 GETTING TO KNOW YOUR INSTRUMENT PANEL
chime to assist in alerting you of this condi-
tion. 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
Continue Driving — This message indicates
that the Diesel Particulate Filter (DPF) is
self-cleaning. Maintain 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 System Service Required — See
Dealer — This message indicates regenera-
tion has been disabled due to a system
malfunction. At this point the engine Power-
train Control Module (PCM) will register a
fault code, the instrument panel will display a
MIL light.
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, extensive
exhaust after-treatment damage can occur.
To correct this condition it will be necessary
to have your vehicle serviced by an autho-
rized dealer.
NOTE:
Failing to follow the oil change indicator,
changing your oil and resetting the oil change
indicator by 0 miles (0 kilometers) remaining
will prevent the diesel exhaust filter from
performing its cleaning routine. This will shortly
result in a Malfunction Indicator Light (MIL) and
reduced engine power. Only an authorized
dealer will be able to correct this condition.
Diesel Exhaust Fluid (DEF) Warning
Messages
Your vehicle will begin displaying warning
messages when the DEF level reaches a driving
range of approximately 500 miles (805 kilome-
ters). If the following warning message
sequence is ignored, your vehicle may not
restart unless DEF is added within the displayed
mileage shown in the message.
Engine Will Not Restart in XXXX mi DEF Low
Refill Soon — This message will display when
DEF driving range is less than 500 miles
(805 kilometers), DEF fluid top off is required
with in the displayed mileage. The message
will be displayed during vehicle start up with
the current allowed mileage and accompa-
nied by a single chime. The remaining
mileage can be pulled up anytime by way of
the “Messages” list within the display.
CAUTION!
See an authorized dealer, as damage to the
exhaust system could occur soon with
continued operation.
CAUTION!
See an authorized dealer, as damage to the
exhaust system could occur soon with
continued operation.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 11
Engine Will Not Restart in XXXX mi Refill
DEF — This message will display when DEF
driving range is less than 311 miles
(500 kilometers). It is also displayed at
249 miles (400 kilometers), 186 miles
(300 kilometers), and 124 miles (200 kilo-
meters). Continuous Display starts at
124 miles (200 kilometers). DEF fluid top
off is required with in the displayed
mileage. The message will be displayed
during vehicle start up with an updated
distance mileage, and it will be accompa-
nied by a single chime. Starting at
100 miles (160 kilometers), remaining
range will be continuously displayed while
operating the vehicle. Chimes will also
accompany the 75, 50 and 25 miles
(120, 80, and 40 kilometers) remaining
distances. The DEF Low telltale will be on
continuously 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 mile (1.6 kilometers),
DEF fluid top off is required or the engine will
not restart. The message will be displayed
during vehicle start up, and it will be
accompanied by a single chime. The DEF Low
telltale will be illuminated 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 each time the vehicle is started.
The message will be accompanied by a single
chime and the Malfunction Indicator Light. See
an authorized dealer to have the vehicle
serviced immediately. If not corrected in
30 miles (48 kilometers), vehicle will enter the
“Engine Will not restart in XXX mi Service DEF
See dealer” warning stage and message.
Incorrect DEF Detected See Dealer — This
message will display if the DEF system has
detected the incorrect fluid has been intro-
duced to the DEF tank. The message will be
accompanied by a single chime. See an
authorized dealer to have the vehicle
serviced immediately. If not corrected in
30 miles (48 kilometers), vehicle will enter
the “Engine Will Not Restart in XXX mi Service
DEF See Dealer” warning stage and
message.
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
(48 kilometers) of operation. It is also displayed
at 250 miles (402 kilometers) 186 miles
(300 kilometers) and 124 miles (200 kilome-
ters). System service is required within the
displayed mileage. The message will appear in
the display during vehicle start up with an
updated distance mileage, and it will be accom-
panied by a single chime. Starting at 124 miles
(200 kilometers), remaining range will be
continuously displayed while operating the
vehicle. Chimes will also accompany the 75, 50
and 25 miles (120, 80, and 40 kilometers)
remaining distances. See an authorized dealer
to have the 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 an
authorized dealer. This message will be
3
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12 GETTING TO KNOW YOUR INSTRUMENT PANEL
displayed when under 1 mile (1.6 kilometers)
until engine will not start and each time the
vehicle is started, and will be continuously
displayed. The message will be accompanied
by a single chime. Your Malfunction Indicator
Light will be continuously illumined. See an
authorized dealer if the message appears
while engine is running.
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 your vehicle is serviced by an
authorized dealer. The message will be
accompanied by a single chime. Your
Malfunction Indicator Light will be continu-
ously illuminated. If the message appears
and you can not start the engine, see an
authorized dealer to have the vehicle
serviced immediately.
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 an authorized dealer for service.
The DEF gauge may also not immediately
update after a refill if the temperature of the
DEF fluid is below 12° F (-11° C). 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 condi-
tions, it is possible that the gauge may not
reflect the new fill level for several drives.
WARNING LIGHTS AND MESSAGES
The warning/indicator lights will illuminate in
the instrument cluster together with a dedi-
cated message and/or acoustic signal when
applicable. These indications are indicative and
precautionary and as such must not be consid-
ered as exhaustive. Always refer to the informa-
tion in this chapter in the event of a failure
indication. All active telltales will display first if
applicable. The system check menu may
appear different based upon equipment
options and current vehicle status. Some tell-
tales are optional and may not appear.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 13
Yellow Indicator Lights
Low Diesel Exhaust Fluid (DEF) Indicator
Light — If Equipped
The Low Diesel Exhaust Fluid (DEF)
Indicator will illuminate if the vehicle
is low on Diesel Exhaust Fluid (DEF).
Refer to “Diesel Exhaust Fluid” in
“Starting and Operating” for further
information.
Wait To Start Light — If Equipped
This indicator light will illuminate for
approximately two seconds when the
ignition is turned to the ON/RUN posi-
tion. Its duration may be longer based
on colder operating conditions. Vehicle will not
initiate start until telltale is no longer displayed.
Refer to “Starting The Engine” in “Starting And
Operating” for further information.
NOTE:
The “Wait To Start” telltale may not illuminate if
the intake manifold temperature is warm
enough.
Water In Fuel Indicator Light — If Equipped
The “Water In Fuel Indicator Light”
will illuminate when there is water
detected in the fuel filter. If this light
remains on, DO NOT start the vehicle
before you drain the water from the fuel filter to
prevent engine damage.
Refer to the “Draining Fuel/Water Separator
Filter” section in “Dealer Service” in “Servicing
And Maintenance” for further information.
3
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14
(Continued)
STARTING AND OPERATING
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
between such intervals will protect the starter
from overheating.
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.
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 wireless 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. Leaving
children in 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 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.
WARNING! (Continued)
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 “Draining
Fuel/Water Separator Filter” in “Servicing
And Maintenance” for further information.
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STARTING AND OPERATING 15
Automatic Transmission
Start the engine with the transmission gear
selector in the PARK (P) 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 an 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 starting and reduces the amount of
white smoke generated by a warming engine.
Normal Starting
Observe the instrument cluster lights when
starting the engine.
NOTE:
Normal starting of either a cold or a warm
engine is obtained without pumping or pressing
the accelerator pedal.
1. Always apply the parking brake.
2. Press and hold the brake pedal while
pushing the ENGINE START/STOP button
once.
NOTE:
A delay of the start of up to five seconds is
possible under very cold conditions. The "Wait
to Start" telltale will be illuminated during the
pre-heat process. When the engine “Wait To
Start” telltale goes off the engine will automati-
cally crank.
3. The system will automatically engage the
starter to crank the engine. If the vehicle
fails to start, the starter will disengage auto-
matically after 25 seconds.
4. If you wish to stop the cranking of the
engine prior to the engine starting, push the
ENGINE START/STOP button again.
5. Check that the Oil Pressure Warning Light
has turned off.
6. Release the parking brake.
CAUTION!
If the “Water in Fuel Indicator Light” remains
on, DO NOT START the engine before you
drain the water from the fuel filters to avoid
engine damage. Refer to “Draining Fuel/
Water Separator Filter” in “Servicing And
Maintenance” for further information.
4
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16 STARTING AND OPERATING
(Continued)
NOTE:
Only press one pedal at a time while driving the
vehicle. Torque performance of the vehicle
could be reduced if both pedals are pressed at
the same time. If pressure is detected on both
pedals simultaneously, a warning message will
display in the instrument cluster. Refer to
“Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further infor-
mation.
Starting Fluids
The engine is equipped with a glow plug
preheating system. If the instructions in this
manual are followed, the engine should start in
all conditions and no type of starting fluid
should be used.
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 inter-
rupter protected 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 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 tempera-
tures, use of an externally powered electric
engine block heater (available from an autho-
rized dealer) is recommended.
NOTE:
The block heater will require 110 Volts AC and
6.5 Amps to activate the heater element.
WARNING!
Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build up may cause serious injury or
death.
When leaving the vehicle, always make
sure the keyless ignition node is in the
“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.
Allowing children to be in a vehicle unat-
tended 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 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.
WARNING! (Continued)
WARNING!
Remember to disconnect the cord before
driving. Damage to the 110–115 Volt
electrical cord could cause electrocution.
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STARTING AND OPERATING 17
ENGINE BREAK-IN RECOMMENDATIONS —
3.0L DIESEL
The diesel engine does not require a break-in
period due to its construction. Normal operation
is allowed, providing the following recommen-
dations are followed:
Warm up the engine before placing it under
load.
Do not operate the engine at idle for
prolonged periods.
Use the appropriate transmission gear to
prevent engine lugging.
Observe vehicle oil pressure and tempera-
ture indicators.
Check the coolant and oil levels frequently.
Vary throttle position at highway speeds
when carrying or towing significant weight.
NOTE:
Light duty operation such as light trailer towing
or no load operation will extend the time before
the engine is at full efficiency. Reduced fuel
economy and power may be seen at this time.
The engine oil installed in the engine at the
factory is a high-quality energy conserving type
lubricant. Oil changes should be consistent with
anticipated climate conditions under which
vehicle operations will occur. The recom-
mended viscosity and quality grades are shown
under “Fluids And Lubricants” in "Technical
Specifications” in this manual. NON-DETER-
GENT OR STRAIGHT MINERAL OILS MUST
NEVER BE USED.
NORMAL OPERATION — 3.0L DIESEL
ENGINE
Observe the following when the diesel engine is
operating:
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 voltmeter needle will stabilize.
4
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18 STARTING AND OPERATING
Cold Weather Precautions
Operation in ambient temperature below 32°F (0°C) may require special considerations. The following charts suggest these options:
Fuel Operating Range
NOTE:
Use “Ultra Low Sulfur Diesel Fuels (ULSD)” ONLY.
Fuel Operating Range Chart
*No. 1 ULSD Fuel should only be used where extended arctic conditions 0°F (-18°C) exist”.
20_JL_D_SU_EN_USC_t.book Page 18