fuel cap JEEP WRANGLER 2023 Owners Manual

4
NORMAL OPERATION — DIESEL ENGINE ..................... 130
Cold Weather Precautions........................................ 131Engine Idling .............................................................. 131Stopping The Engine ................................................. 132
Cooling System Tips — Automatic Transmission..... 132
ENGINE BREAK-IN RECOMMENDATIONS —
GASOLINE ENGINE (IF EQUIPPED) ................................ 133
ENGINE BREAK-IN RECOMMENDATIONS — DIESEL
ENGINE (IF EQUIPPED) .................................................... 133
PARKING BRAKE ............................................................. 133
MANUAL TRANSMISSION — IF EQUIPPED .................... 134 Shifting....................................................................... 135
Downshifting.............................................................. 136
AUTOMATIC TRANSMISSION — IF EQUIPPED .............. 137 Ignition Park Interlock............................................... 137Brake/Transmission Shift Interlock (BTSI)
System ...................................................................... 138
8–Speed Automatic Transmission .......................... 138
FOUR–WHEEL DRIVE OPERATION ............................... 140 Four-Position Transfer Case — If Equipped ............ 141Five-Position Transfer Case — If Equipped .............. 142
Trac-Lok Rear Axle — If Equipped ............................ 144

Axle Lock (Tru-Lok) Front And Rear — If Equipped ... 144

Axle Lock (Tru-Lok) Rear Only — If Equipped .......... 144
Electronic Sway Bar Disconnect — If Equipped ...... 145
Off Road+ — If Equipped........................................... 146
ELECTRO-HYDRAULIC POWER STEERING .................... 146
STOP/START SYSTEM — AUTOMATIC TRANSMISSION
(IF EQUIPPED) .................................................................. 147 Autostop Mode .......................................................... 147
Possible Reasons The Engine Does Not Autostop.. 148
To Start The Engine While In Autostop Mode.......... 148
To Manually Turn Off The Stop/Start System ......... 148
To Manually Turn On The Stop/Start System.......... 149
System Malfunction .................................................. 149 STOP/START SYSTEM — MANUAL TRANSMISSION
(IF EQUIPPED) .................................................................. 149
Autostop Mode.......................................................... 149
Possible Reasons The Engine Does Not
Autostop .................................................................... 150
To Start The Engine While In Autostop Mode ......... 150
To Manually Turn Off The Stop/Start System ......... 150
To Manually Turn On The Stop/Start System ......... 151
System Malfunction.................................................. 151
CRUISE CONTROL SYSTEMS — IF EQUIPPED ............. 151 Cruise Control ........................................................... 151
Adaptive Cruise Control (ACC).................................. 152
PARKSENSE REAR PARK ASSIST — IF EQUIPPED ...... 160 ParkSense Sensors .................................................. 160ParkSense Warning Display ..................................... 160
ParkSense Display.................................................... 160
Enabling And Disabling ParkSense ......................... 162
Service The ParkSense Rear Park Assist System... 162
Cleaning The ParkSense System ............................. 163ParkSense System Usage Precautions ................... 163
PARKVIEW REAR BACK UP CAMERA ........................... 163
TRAILCAM SYSTEM — IF EQUIPPED .............................. 164
REFUELING THE VEHICLE — GASOLINE ENGINE
(IF EQUIPPED) .................................................................. 165 Fuel Filler Cap ........................................................... 165
Loose Fuel Filler Cap Message ............................... 166
REFUELING THE VEHICLE — DIESEL ENGINE
(IF EQUIPPED) .................................................................. 166 Avoid Using Contaminated Fuel............................... 167
Bulk Fuel Storage — Diesel Fuel .............................. 167
Diesel Exhaust Fluid ................................................. 167
VEHICLE LOADING ........................................................... 169 Certification Label..................................................... 169 TRAILER TOWING ............................................................170
Common Towing Definitions..................................... 170
Trailer Hitch Classification ........................................ 172Trailer Towing Weights (Maximum Trailer Weight
Ratings) ..................................................................... 172
Trailer And Tongue Weight........................................ 173Towing Requirements ............................................... 173Towing Tips ................................................................ 175
RECREATIONAL TOWING (BEHIND MOTORHOME) ...... 176 Towing This Vehicle Behind Another Vehicle ........... 176Recreational Towing — Four-Wheel Drive Models ... 176
DRIVING TIPS ....................................................................178 On-Road Driving Tips ................................................. 178
Off-Road Driving Tips................................................. 178
MULTIMEDIA
UCONNECT SYSTEMS ......................................................184
CYBERSECURITY ..............................................................184
UCONNECT SETTINGS ......................................................184 Customer Programmable Features ......................... 184
UCONNECT INTRODUCTION ............................................ 197 System Overview ...................................................... 197Drag & Drop Menu Bar ............................................. 200Safety And General Information ............................... 200
UCONNECT MODES .......................................................... 201 Steering Wheel Audio Controls ................................ 201Radio Mode .............................................................. 201
Media Mode .............................................................. 210
Phone Mode ............................................................. 212

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6
VEHICLE MAINTENANCE ................................................ 318
Engine Oil................................................................... 318
Engine Oil Filter ......................................................... 319
Engine Air Cleaner Filter ........................................... 319
Draining Fuel/Water Separator Filter —
Diesel Engine............................................................. 321Fuel Filter Replacement — Diesel Engine................ 321
Priming If The Engine Has Run Out Of Fuel —
Diesel Engine ............................................................ 323
Intervention Regeneration Strategy —
Message Process Flow ............................................ 323
Diesel Exhaust Fluid ................................................. 323
Accessory Drive Belt Inspection ............................... 324
Air Conditioner Maintenance ................................... 324
Body Lubrication ....................................................... 326Windshield Wiper Blades.......................................... 326
Exhaust System ........................................................ 328
Cooling System.......................................................... 328
Brake System ........................................................... 331
Front/Rear Axle Fluid ............................................... 332Transfer Case ........................................................... 332
Manual Transmission — If Equipped ....................... 332
Automatic Transmission — If Equipped .................. 333Fuses ........................................................................ 333
Bulb Replacement .................................................... 342
TIRES ................................................................................ 345 Tire Safety Information ............................................. 345
Tires — General Information ..................................... 352
Tire Types................................................................... 355
Spare Tires — If Equipped ........................................ 355Wheel And Wheel Trim Care ..................................... 356
Snow Traction Devices ............................................ 357
Tire Rotation Recommendations ............................ 358 DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES .................................................. 358
Treadwear ................................................................. 358Traction Grades ........................................................ 359Temperature Grades ................................................ 359
STORING THE VEHICLE ................................................... 359
BODYWORK ...................................................................... 360 Protection From Atmospheric Agents ...................... 360Body And Underbody Maintenance ......................... 361
Preserving The Bodywork ......................................... 361
INTERIORS ....................................................................... 362 Carpet Safety Information ........................................ 362
Carpet Removal ........................................................ 363Seats And Fabric Parts ............................................. 367
Plastic And Coated Parts .......................................... 367Leather Surfaces ...................................................... 367
Glass Surfaces ......................................................... 367
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER (VIN)..................... 368
BRAKE SYSTEM ............................................................... 368
WHEEL AND TIRE TORQUE SPECIFICATIONS .............. 368 Torque Specifications ............................................... 368
FUEL REQUIREMENTS — GASOLINE ENGINE ............... 369 2.0L Engine ............................................................... 3693.6L Engine ............................................................... 369Reformulated Gasoline ............................................ 369
Materials Added To Fuel .......................................... 369Gasoline/Oxygenate Blends ................................... 370Do Not Use E-85 In Non-Flex Fuel Vehicles ............ 370
CNG And LP Fuel System Modifications.................. 370
MMT In Gasoline ....................................................... 370
Fuel System Cautions ............................................... 370 FUEL REQUIREMENTS – DIESEL ENGINE ..................... 371
Diesel Fuel Specifications ........................................ 371Biodiesel Fuel Requirements ................................... 371
FLUID CAPACITIES ...........................................................373
ENGINE FLUIDS AND LUBRICANTS ................................374
CHASSIS FLUIDS AND LUBRICANTS ............................. 376
CUSTOMER ASSISTANCE
SUGGESTIONS FOR OBTAINING SERVICE FOR
YOUR VEHICLE ................................................................. 377 Prepare For The Appointment .................................. 377
Prepare A List ............................................................ 377Be Reasonable With Requests ................................. 377
IF YOU NEED ASSISTANCE .............................................377 Roadside Assistance ................................................. 377
FCA US LLC Customer Center ................................... 378
FCA Canada Inc. Customer Center........................... 378
Mexico ........................................................................ 378
Puerto Rico And US Virgin Islands............................ 378
Customer Assistance For The Hearing Or
Speech Impaired
(TDD/TTY)................................................................... 379Service Contract ....................................................... 379
WARRANTY INFORMATION.............................................379
MOPAR® PARTS ..............................................................379
REPORTING SAFETY DEFECTS ......................................379 In The 50 United States And Washington, D.C........ 379
In Canada................................................................... 380
PUBLICATION ORDER FORMS .......................................380
CHANGE OF OWNERSHIP OR ADDRESS.......................380
GENERAL INFORMATION................................................. 381

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10
Yellow Warning Lights
Anti-Lock Brake System (ABS) Warning Light
Úpage 119
Electronic Stability Control (ESC) Active Warning Light
Úpage 119
Electronic Stability Control (ESC) OFF Warning Light
Úpage 120
Loose Fuel Filler Cap Warning Light
Úpage 120
Low Fuel Warning Light
Úpage 120
Low Washer Fluid Warning Light
Úpage 120
Engine Check/Malfunction Indicator Warning Light (MIL)
Úpage 120
AdBlue® (UREA) Injection System Failure Warning Light
Úpage 120
Service 4WD Warning Light Úpage 120
Service Adaptive Cruise Control Warning Light
Úpage 120
Service Forward Collision Warning (FCW) Light
Úpage 121
Service Stop/Start System Warning Light
Úpage 121
Cruise Control Fault Warning Light
Úpage 121
Sway Bar Fault Warning Light
Úpage 121
Tire Pressure Monitoring System (TPMS) Warning Light
Úpage 121
Yellow Warning Lights

23_JL_OM_EN_USC_t.book Page 10

116GETTING TO KNOW YOUR INSTRUMENT PANEL
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
instrument cluster display:
Exhaust Filter Nearing Full Safely Drive at Consistent
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 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 Continue
Driving — This message indicates that the DPF is
self-cleaning. Maintain your current driving condition
until regeneration is completed.
 Exhaust System — Regeneration Completed — This
message indicates that the 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
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 Malfunction
Indicator Light (MIL).
 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 an authorized dealer.
NOTE:Failing to follow the oil change indicator, changing your oil
and resetting the oil change indicator by 0 miles (0 kilo
-
meters) 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.
FUEL SYSTEM MESSAGES
The following chart contains a list of different messages
that may appear in the instrument cluster, depending on
different system or fuel conditions. Use the descriptions to
interpret what the message means and determine the
best action to take.
WARNING LIGHTS AND MESSAGES
The warning/indicator lights will illuminate in the
instrument panel together with a dedicated message and/
or acoustic signal when applicable. These indications are
indicative and precautionary and as such must not be
considered as exhaustive and/or alternative to the
information contained in the Owner’s Manual, which you
are advised to read carefully in all cases. Always refer to
WARNING!
A malfunctioning catalytic converter, as previously
referenced, can reach higher temperatures than in
normal operating conditions. This can cause a fire if you
drive slowly or park over flammable substances such as
dry plants, wood, cardboard, etc. This could result in
death or serious injury to the driver, occupants or
others.
CAUTION!
The engine may be switched off even if the warning
light is on: repeated interruptions of the regeneration
process could cause an early deterioration of engine oil.
For this reason it is always advisable to wait for the
symbol to go off before turning off the engine, following
the previously mentioned instructions. Do not complete
the DPF regeneration process when the vehicle is
stopped.
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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120GETTING TO KNOW YOUR INSTRUMENT PANEL
Electronic Stability Control (ESC) OFF
Warning Light — If Equipped
This warning light indicates the ESC is off.
Each time the ignition is turned to ON/RUN or
ACC/ON/RUN, the ESC system will be on, even
if it was turned off previously.
Loose Fuel Filler Cap Warning Light —
If Equipped
This warning light will illuminate when the fuel
filler cap is loose. Properly close the filler cap to
disengage the light. If the light does not turn
off, please see an authorized dealer.
Low Fuel Warning Light
When the fuel level reaches approximately 2.0
gal (7.5 L), this light will turn on and a chime will
sound. The light will remain on until fuel is
added.
Low Washer Fluid Warning Light —
If Equipped
This warning light will illuminate when the
windshield washer fluid is low Úpage 314.
Engine Check/Malfunction Indicator
Warning Light (MIL)
The MIL is a part of an Onboard Diagnostic
System called OBD II that monitors engine and
automatic transmission control systems. This
warning light will illuminate when the ignition is in the ON/RUN position before engine start. If the bulb
does not come on when turning the ignition switch from
OFF to ON/RUN, have the condition checked promptly.
Certain conditions, such as a loose or missing gas cap,
poor quality fuel, etc., may illuminate the light after engine
start. The vehicle should be serviced if the light stays on
through several typical driving styles. In most situations,
the vehicle will drive normally and will not require towing.
When the engine is running, the MIL may flash to alert
serious conditions that could lead to immediate loss of
power or severe catalytic converter damage. The vehicle
should be serviced by an authorized dealer as soon as
possible if this occurs.
AdBlue® (UREA) Injection System Failure
Warning Light — If Equipped
This warning light will illuminate along with a
dedicated message on the display (if equipped)
if an unknown fluid not conforming with
acceptable characteristics is inserted, or if an
average consumption of AdBlue® (UREA) over 50% is
detected. Contact an authorized dealer as soon as
possible.
If the problem is not solved, a specific message will appear
on the instrument cluster display whenever a certain
threshold is reached until it will no longer be possible to
start the engine.
When about 125 miles (200 km) are remaining before the
AdBlue® (UREA) tank is empty, a continuous dedicated
message will appear on the instrument panel,
accompanied by a chime.
Service 4WD Warning Light — If Equipped
This warning light will illuminate to signal a fault
with the 4WD system. If the light stays on or
comes on during driving, it means that the 4WD
system is not functioning properly and that
service is required. We recommend you drive to the
nearest service center and have the vehicle serviced
immediately.
Service Adaptive Cruise Control Warning
Light — If Equipped
This light will turn on when a ACC is not
operating and needs service Úpage 152.
WARNING!
A malfunctioning catalytic converter, as previously
referenced, can reach higher temperatures than in
normal operating conditions. This can cause a fire if you
drive slowly or park over flammable substances such as
dry plants, wood, cardboard, etc. This could result in
death or serious injury to the driver, occupants or
others.
CAUTION!
Prolonged driving with the Malfunction Indicator Light
(MIL) on could cause damage to the vehicle control
system. It also could affect fuel economy and
driveability. If the MIL is flashing, severe catalytic
converter damage and power loss will soon occur.
Immediate service is required.

23_JL_OM_EN_USC_t.book Page 120

STARTING AND OPERATING165
NOTE:The system will stay active while in 4WD Low.
The TrailCam system has programmable settings that may
be selected through the Uconnect system
Úpage 184.
Manual Activation Of The TrailCam
TrailCam view can be activated via the below methods:
 Press the FWD Camera button on the controls screen.
 Press the Forward Facing Camera button on the apps
menu.
 Press the TrailCam button on the Off Road Pages.
 Press the Off Road+ button when “Auto Launch Off
Road+” (if equipped) has been selected under camera
settings.
The TrailCam view can also be activated by pressing the icon on the Back Up Camera view. The Back Up
Camera view can also be activated by pressing the
icon on the TrailCam view.
When the vehicle is shifted out of REVERSE with Camera
Delay turned off and TrailCam view is active, the TrailCam
mode is exited and the previous screen appears again.
When the vehicle is shifted out of REVERSE with Camera
Delay turned on and the TrailCam view is active, the
TrailCam image will be displayed for up to 10 seconds
unless the vehicle speed exceeds 8 mph (13 km/h), the
transmission is shifted into PARK, the ignition is placed in
the OFF position, or the touchscreen X button to disable
display of the TrailCam view is pressed.
Whenever the TrailCam image is activated through the
Manual Activation Methods, and the vehicle speed is
greater than or equal to 8 mph (13 km/h), a display timer for the image is initiated. The image will continue to be
displayed until the display timer exceeds 10 seconds.
NOTE:
 If the vehicle speed remains below 8 mph (13 km/h)
while in 2WD or 4WD High, the TrailCam image will be
displayed continuously until deactivated via the touch -
screen X button, the transmission is shifted into PARK,
or the ignition is placed in the OFF position.
 The touchscreen X button to disable the display of the
camera image is made available ONLY when the
vehicle is not in REVERSE.
 The TrailCam view will stay active regardless of the
vehicle speed and time while in 4WD Low.
Cleaning The TrailCam
Press and hold the Clean Camera button located on the
TrailCam view to wash the TrailCam. Washer fluid will stop
when the button is released.
 The camera can be washed up to 20 seconds at a time
while holding the button.
 The Clean Camera system is not available when wind -
shield washing is in process.
When enabled, active dynamic tire lines are projected on
the ground plane of the TrailCam view based on the
steering wheel position.
REFUELING THE VEHICLE — GASOLINE
ENGINE (IF EQUIPPED)
FUEL FILLER CAP
The fuel filler cap is located on the driver's side of the
vehicle. If the fuel filler cap is lost or damaged, be sure the
replacement cap is the correct one for this vehicle.
1. Open the fuel filler door.

Fuel Filler Door

2. Remove the fuel cap by rotating it counterclockwise.

Fuel Filler Cap

3. Fully insert the fuel nozzle into the filler pipe.
4

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166STARTING AND OPERATING
(Continued)
4. Fill the vehicle with fuel.
NOTE:

When the fuel nozzle “clicks” or shuts off, the fuel
tank is full.
 Wait five seconds before removing the fuel nozzle
to allow excess fuel to drain from the nozzle.
5. Remove the fuel nozzle, reinstall fuel cap and close fuel filler door.
NOTE:
When the fuel nozzle “clicks” or shuts off, the fuel tank
is full.
 Tighten the fuel filler cap about a quarter turn until you
hear one click. This is an indication that the cap is prop -
erly tightened.
 If the fuel filler cap is not tightened properly, the MIL
will come on. Be sure the cap is tightened every time
the vehicle is refueled.
LOOSE FUEL FILLER CAP MESSAGE
After fuel has been added, the vehicle diagnostic system
can determine if the fuel filler cap is possibly loose,
improperly installed, or damaged. If the system detects a
malfunction, the “gASCAP” message will display in the
odometer display. Tighten the gas cap until a "clicking"
sound is heard. This is an indication that the gas cap is
properly tightened. Push the odometer reset button to turn
the message off. If the problem persists, the message will
appear the next time the vehicle is started. This might
indicate a damaged cap. If the problem is detected twice
in a row, the system will turn on the MIL. Resolving the
problem will turn the MIL off.
REFUELING THE VEHICLE — DIESEL ENGINE
(IF EQUIPPED)
The fuel filler cap is located on the driver's side of the
vehicle. If the fuel filler cap is lost or damaged, be sure the
replacement cap is the correct one for this vehicle.

1. Open the fuel filler door.

Fuel Filler Door

WARNING!

Never have any smoking materials lit in or near the
vehicle when the fuel door is open or the tank is being
filled.
 Never add fuel when the engine is running. This is in
violation of most state and federal fire regulations and
may cause the Malfunction Indicator Light to turn on.
 A fire may result if fuel is pumped into a portable
container that is inside of a vehicle. You could be
burned. Always place fuel containers on the ground
while filling.

CAUTION!
Damage to the fuel system or emission control
system could result from using an improper fuel filler
cap. A poorly fitting cap could let impurities into the
fuel system. Also, a poorly fitting aftermarket cap can
cause the Malfunction Indicator Light (MIL) to illumi -
nate, due to fuel vapors escaping from the system.
 To avoid fuel spillage and overfilling, do not “top off”
the fuel tank after filling.
CAUTION!

23_JL_OM_EN_USC_t.book Page 166

STARTING AND OPERATING167
2. Remove the fuel cap by rotating it counterclockwise.

Fuel and Diesel Exhaust Fluid (DEF) Fill Location

3. Fully insert the fuel nozzle into the filler pipe.
4. Fill the vehicle with fuel.
NOTE:
When the fuel nozzle “clicks” or shuts off, the fuel
tank is full.
 Wait five seconds before removing the fuel nozzle
to allow excess fuel to drain from the nozzle.
5. Remove the fuel nozzle, reinstall fuel cap and close fuel filler door.
NOTE:Tighten the fuel filler cap about a quarter turn until you
hear one click. This is an indication that the cap is properly
tightened.
AVOID USING CONTAMINATED FUEL
Fuel that is contaminated by water or dirt can cause
severe damage to the engine fuel system. Proper
maintenance of the engine fuel filter and fuel tank is
essential see
Úpage 321.
BULK FUEL STORAGE — DIESEL FUEL
If you store quantities of fuel, good maintenance of the
stored fuel is also essential. Fuel contaminated with water
will promote the growth of “microbes.” These microbes
form “slime” that will clog the fuel filtration system and
lines. Drain condensation from the supply tank and
change the line filter on a regular basis.
NOTE:When a diesel engine is allowed to run out of fuel, air is
pulled into the fuel system.
If the vehicle will not start see
Úpage 323.
DIESEL EXHAUST FLUID
Your vehicle is equipped with a Selective Catalytic
Reduction (SCR) system to meet the very stringent diesel
emissions standards required by the Environmental
Protection Agency.
The purpose of the SCR system is to reduce levels of NOx
(oxides of nitrogen emitted from engines) that are harmful
to our health and the environment to a near-zero level. A
small quantity of Diesel Exhaust Fluid (DEF) is injected into
the exhaust upstream of a catalyst where, when
vaporized, it converts smog-forming nitrogen oxides (NOx)
into harmless nitrogen (N2) and water vapor (H2O), two
natural components of the air we breathe. You can
operate with the comfort that your vehicle is contributing
to a cleaner, healthier world environment for this and
generations to come.
1 — Diesel Fuel Filler
2 — DEF Filler
CAUTION!
For diesel engines, only use diesel fuel for motor
vehicles in accordance with ASTM D-975 Grade S15
specifications. The use of other products or mixtures
may damage the engine beyond repair and
consequently void the warranty, due to the damage
caused. If you accidentally introduce other types of fuel
into the tank, do not start the engine. Empty the tank. If
the engine has been run for even an extremely limited
amount of time, you must not only drain the fuel tank,
but the rest of the supply circuit as well.
WARNING!
Do not open the high pressure fuel system with the
engine running. Engine operation causes high fuel
pressure. High pressure fuel spray can cause serious
injury or death.
4

23_JL_OM_EN_USC_t.book Page 167

168STARTING AND OPERATING
System Overview
This vehicle is equipped with a Diesel Exhaust Fluid (DEF)
injection system and a Selective Catalytic Reduction (SCR)
catalyst to meet the emission requirements.
The DEF injection system consists of the following
components:
DEF tank
 DEF pump
 DEF injector
 Electronically-heated DEF Lines
 NOx sensors
 Temperature sensors
 SCR catalyst
The DEF injection system and SCR catalyst enable the
achievement of diesel emission requirements; while
maintaining outstanding fuel economy, drivability, torque
and power ratings.
For system messages and warnings see
Úpage 108.
NOTE:
 Your vehicle is equipped with a DEF injection system.
You may occasionally hear an audible clicking noise
from under the vehicle at a stop. This is normal opera -
tion.
 The DEF pump will run for a period of time after engine
shutdown to purge the DEF system. This is normal
operation and may be audible from the rear of the
vehicle.
Diesel Exhaust Fluid Storage
Diesel Exhaust Fluid (DEF) is considered a very stable
product with a long shelf life. If DEF is kept in
temperatures between 10° and 90°F (-12° and 32°C), it
will last a minimum of one year.
DEF is subject to freezing at the lowest temperatures. For
example, DEF may freeze at temperatures at or below
12°F (-11°C). The system has been designed to operate
in this environment.
NOTE:When working with DEF, it is important to know that:
Any containers or parts that come into contact with DEF
must be DEF compatible (plastic or stainless steel).
Copper, brass, aluminum, iron or non-stainless steel
should be avoided as they are subject to corrosion by
DEF.
 If DEF is spilled, it should be wiped up completely.
Adding Diesel Exhaust Fluid
The DEF gauge (located on the instrument cluster display)
will display the level of DEF remaining in the tank
Úpage 108.
NOTE:Driving conditions (altitude, vehicle speed, load, etc.) will
affect the amount of DEF that is used in your vehicle.
DEF FILL PROCEDURE
NOTE:
For the correct DEF fluid type see Úpage 374.

1. Remove cap from DEF fill inlet (located in fuel door).

Fuel and Diesel Exhaust Fluid Fill Location

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 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 tank heater will
1 — Diesel Fuel Filler
2 — Diesel Exhaust Fluid Filler

23_JL_OM_EN_USC_t.book Page 168

STARTING AND OPERATING169
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.
 Excessive overfilling of the DEF tank can result in
a MIL lamp/fault code and inaccurate level read -
ings.
Refilling With Nozzles
You can fill up at any DEF distributor.
Proceed as follows:
 Insert the DEF nozzle in the filler, start refilling and
stop refilling at the first shut-off (the shut-off indi -
cates that the DEF tank is full). Do not proceed
with the refilling, to prevent spillage of DEF.
 Extract the nozzle.
Refilling With Containers
Proceed as follows:
 Check the expiration date.
 Read the advice for use on the label before
pouring the content of the bottle into the DEF tank.
 If systems which cannot be screwed in (e.g. tanks)
are used for refilling, after the indication appears
on the instrument panel display
Úpage 104 fill
the DEF tank with no more than 2 gal (8 L).
 If containers which can be screwed to the filler are
used, the reservoir is full when the DEF level in the
container stops pouring out. Do not proceed
further. 3. Stop filling the DEF tank immediately when any of the
following happen: DEF stops flowing from the fill
bottle into the DEF fill inlet, DEF splashes out the fill
inlet, or a DEF pump nozzle automatically shuts off.
4. Reinstall cap onto DEF fill inlet.
VEHICLE LOADING
CERTIFICATION LABEL
As required by National Highway Traffic Safety
Administration regulations, your vehicle has a certification
label affixed to the driver's side door or pillar.
This label contains the month and year of manufacture,
Gross Vehicle Weight Rating (GVWR), Gross Axle Weight
Rating (GAWR) front and rear, and Vehicle Identification
Number (VIN). A Month-Day-Hour (MDH) number is
included on this label and indicates the Month, Day and
Hour of manufacture. The bar code that appears on the
bottom of the label is your VIN.
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total permissible weight of your vehicle
including driver, passengers, vehicle, options and cargo.
The label also specifies maximum capacities of front and
rear axle systems (GAWR). Total load must be limited so
GVWR and front and rear GAWR are not exceeded.
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, however,
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 acciden -
tally 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.
 Never add anything other than DEF to the tank –
especially any form of hydrocarbon such as diesel
fuel, fuel system additives, gasoline, or any other
petroleum-based product. Even a very small amount
of these, less than 100 parts per million or less than
1 oz. per 78 gal (295 L) will contaminate the entire
DEF system and will require replacement. If owners
use a container, funnel or nozzle when refilling the
tank, it should either be new or one that has only
been used for adding DEF. Mopar® provides an
attachable nozzle with its DEF for this purpose.
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