cooling 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

23_JL_OM_EN_USC_t.book Page 4

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

23_JL_OM_EN_USC_t.book Page 6

GETTING TO KNOW YOUR VEHICLE55
MAX A/C Button
Press and release the MAX A/C button on the
touchscreen to change the current setting to
the coldest output of air. The MAX A/C indicator
illuminates when MAX A/C is on. Pressing the
button again will cause the MAX A/C operation to exit.
NOTE:The MAX A/C button is only available on the touchscreen.
MAX A/C sets the control for maximum cooling
performance. The button illuminates when MAX A/C is on.
In MAX A/C, the blower level and mode position can be
adjusted to desired user settings. Pressing other settings
will cause the MAX A/C to turn off.
A/C Button
Press and release this button on the
touchscreen, or push the button on the
faceplate to change the current setting. The
A/C indicator illuminates when A/C is on.
The A/C button allows the operator to manually activate or
deactivate the A/C system. When the A/C system is turned
on, cool dehumidified air will flow through the outlets into
the cabin.
Recirculation Button
Press and release this button on the
touchscreen, or push the button on the
faceplate, to change the system between
recirculation mode and outside air mode. The
Recirculation indicator and the A/C indicator illuminate
when the Recirculation button is pressed. Recirculation
can be used when outside conditions, such as smoke,
odors, dust, or high humidity are present. Recirculation can be used in all modes. Recirculation may be
unavailable (button on the touchscreen greyed out) if
conditions exist that could create fogging on the inside of
the windshield. The A/C can be deselected manually
without disturbing the mode control selection. Continuous
use of the Recirculation mode may make the inside air
stuffy and window fogging may occur. Extended use of this
mode is not recommended. Recirculation mode may
automatically adjust to optimize customer experience for
warming, cooling, dehumidification, etc.
In cold weather, use of Recirculation mode may lead to
excessive window fogging.
AUTO Button
Set your desired temperature and press and
release the AUTO button on the touchscreen, or
push the button on the faceplate. AUTO will
achieve and maintain your desired
temperature by automatically adjusting the blower speed
and air distribution. Air Conditioning (A/C) may be active
during AUTO operation to improve performance. AUTO
mode is highly recommended for efficiency. You can press
and release this button on the touchscreen, or push the
button on the faceplate, to turn AUTO on. The AUTO
indicator illuminates when AUTO is on. Toggling this
function will cause the system to switch between manual
mode and automatic mode
Úpage 59.
Front Defrost Button
Press and release this button on the
touchscreen, or push and release the button on
the faceplate, to change the current airflow
setting to Defrost mode. The Front Defrost
indicator illuminates when Front Defrost is on. Air comes
from the windshield and side window demist outlets. When the defrost button is selected, the blower level may
increase. Use Defrost mode with maximum temperature
settings for best windshield and side window defrosting
and defogging. When toggling the front defrost mode
button, the climate system returns to the previous setting.
Rear Defrost Button
Press and release the Rear Defrost button on
the touchscreen, or push and release the
button on the faceplate, to turn on the rear
window defroster and the heated outside
mirrors (if equipped). The Rear Defrost indicator
illuminates when the rear window defroster is on. The rear
window defroster automatically turns off after 10 minutes.
CAUTION!
Failure to follow these cautions can cause damage to
the heating elements:
 Use care when washing the inside of the rear
window. Do not use abrasive window cleaners on the
interior surface of the window. Use a soft cloth and a
mild washing solution, wiping parallel to the heating
elements. Labels can be peeled off after soaking
with warm water.
 Do not use scrapers, sharp instruments, or abrasive
window cleaners on the interior surface of the
window.
 Keep all objects a safe distance from the window.
2

23_JL_OM_EN_USC_t.book Page 55

GETTING TO KNOW YOUR VEHICLE59
AUTOMATIC TEMPERATURE CONTROL
(ATC) — I
F EQUIPPED
Automatic Operation

1. Push the AUTO button on the faceplate, or the AUTO
button on the touchscreen on the Automatic
Temperature Control (ATC) Panel.

2. Next, adjust the temperature that you would like the system to maintain by adjusting the driver and
passenger temperature control buttons. Once the
desired temperature is displayed, the system will
achieve and automatically maintain that comfort
level.
3. When the system is set up for your comfort level, it is not necessary to change the settings. You will
experience the greatest efficiency by simply allowing
the system to function automatically.
NOTE:
It is not necessary to move the temperature settings for
cold or hot vehicles. The system automatically adjusts
the temperature, mode, and blower speed to provide
comfort as quickly as possible.
 The temperature can be displayed in US or Metric units
by selecting the US/Metric customer-programmable
feature within Uconnect Settings
Úpage 184.
To provide you with maximum comfort in the Automatic
mode during cold start-ups, the blower fan will remain on
low until the engine warms up. The blower will increase in
speed and transition into Auto mode.
Manual Operation Override
This system offers a full complement of manual override
features. The AUTO symbol in the front ATC display will be
turned off when the system is being used in the manual
mode.
CLIMATE VOICE COMMANDS
Adjust vehicle temperatures hands-free and keep
everyone comfortable while you keep moving ahead.
Push the VR button on the steering wheel. After the beep,
say one of the following commands:
 “Set the driver temperature to 70 degrees ”
 “Set the passenger temperature to 70 degrees ”
Did You Know: Voice Command for Climate may only be
used to adjust the interior temperature of your vehicle.
Voice Command will not work to adjust the heated seats
or steering wheel if equipped.
OPERATING TIPS
Refer to the chart at the end of this section for suggested
control settings for various weather conditions.
Summer Operation
The engine cooling system must be protected with a
high-quality antifreeze coolant to provide proper corrosion
protection and to protect against engine overheating. OAT
coolant (conforming to MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and defroster
performance, make sure the engine cooling system is
functioning properly and the proper amount, type, and concentration of coolant is used. Use of the Air
Recirculation mode during Winter months is not
recommended, because it may cause window fogging.
Vacation/Storage
For information on maintaining the Climate Control system
when the vehicle is being stored for an extended period of
time, see
Úpage 359.
Window Fogging
Vehicle windows tend to fog on the inside in mild, rainy,
and/or humid weather. To clear the windows, select
Defrost or Mix mode and increase the front blower speed.
Do not use the Recirculation mode without A/C for long
periods, as fogging may occur.
Outside Air Intake
Make sure the air intake, located directly in front of the
windshield, is free of obstructions, such as leaves. Leaves
collected in the air intake may reduce airflow, and if they
enter the plenum, they could plug the water drains. In
Winter months, make sure the air intake is clear of ice,
slush, and snow.
Cabin Air Filter
The Climate Control system filters out dust and pollen
from the air. Contact an authorized dealer to service your
cabin air filter, and to have it replaced when needed.
Stop/Start System — If Equipped
While in an Autostop, the Climate Control system may
automatically adjust airflow to maintain cabin comfort.
Customer settings will be maintained upon return to an
engine running condition.
2

23_JL_OM_EN_USC_t.book Page 59

108GETTING TO KNOW YOUR INSTRUMENT PANEL
Use this QR code to access your digital
experience.
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 oper -
ating satisfactorily.
 The pointer will likely indicate a higher tempera -
ture 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
Úpage 108. 4.
Fuel Gauge
 The pointer shows the level of fuel in the fuel tank
when the ignition switch is in the ON/RUN posi -
tion.
 The fuel pump symbol points to the side
of the vehicle where the fuel filler door is
located.
5. Speedometer
 Indicates vehicle speed.
INSTRUMENT CLUSTER DISPLAY
Your vehicle will be equipped with an instrument cluster
display, which offers useful information to the driver. With
the ignition in the OFF mode, opening/closing of a door will
activate the display for viewing, and display the total miles,
or kilometers, in the odometer. Your instrument cluster
display is designed to display important information about
your vehicle’s systems and features. Using a driver
interactive display located on the instrument panel, your
instrument cluster display can show you how systems are
working and give you warnings when they aren’t. The
steering wheel mounted controls allow you to scroll
through and enter the main menus and submenus. You
can access the specific information you want and make
selections and adjustments.CAUTION!
Do not operate the engine with the tachometer pointer
in the red area. Engine damage will occur.
WARNING!
A hot engine cooling system is dangerous. You or others
could be badly burned by steam or boiling coolant. It is
recommended 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.

23_JL_OM_EN_USC_t.book Page 108

STARTING AND OPERATING131
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 (ULSD) Fuels ONLY.

Fuel Operating Range Chart

*Number 1 ULSD Fuel should only be used where extended arctic
conditions 0°F (-18°C) exist.
NOTE:
Use of Climatized ULSD Fuel or Number 1 ULSD Fuel
results in a noticeable decrease in fuel economy.
 Climatized ULSD Fuel is a blend of Number 2 ULSD
Fuel and Number 1 ULSD Fuel which reduces the
temperature at which wax crystals form in fuel.
 The fuel grade should be clearly marked on the pump
at the fuel station.
 The engine requires the use of Ultra Low Sulfur Diesel
Fuel . Use of incorrect fuel could result in engine and
exhaust system damage
Úpage 371.
 If climatized or Number 1 ULSD Fuel is not available,
and you are operating below 20°F (-6°C), in sustained
arctic conditions, Mopar® Premium Diesel Fuel Treat -
ment (or equivalent) is recommended to avoid gelling
(see Fuel Operating Range Chart).
Engine Oil Usage
See Engine Fluids and Lubricants for the correct engine oil
viscosity Úpage 374.
Winter Front Cover
A Winter front or cold weather cover can be used in
ambient temperatures below 32°F (0°C), especially
during extended idle conditions. This cover is equipped
with four flaps for managing total grille opening in varying
ambient temperatures. If a Winter front or cold weather
cover is to be used, the flaps should be in the full open
position to allow air flow to the cooling module and automatic transmission oil cooler. When ambient
temperatures drop below 0°F (-17°C) the four flaps need
to be closed. A suitable cold weather cover is available
from a Mopar® dealer.
Engine Warm-Up
Avoid full throttle operation when the engine is cold. When
starting a cold engine, bring the engine up to operating
speed slowly to allow the oil pressure to stabilize as the
engine warms up.
If temperatures are below 32°F (0°C), operate the engine
at moderate speeds for five minutes before full loads are
applied.
ENGINE IDLING
Avoid prolonged idling. Long periods of idling may be
harmful to your engine because combustion chamber
temperatures can drop so low that the fuel may not burn
completely. Incomplete combustion allows carbon and
varnish to form on piston rings, cylinder head valves, and
injector nozzles. Also, the unburned fuel can enter the
crankcase, diluting the oil and causing rapid wear to the
engine.
4

23_JL_OM_EN_USC_t.book Page 131

132STARTING AND OPERATING
STOPPING THE ENGINE
After full load operation, idle the engine for a few minutes before shutting it down. This idle period will allow the lubricating oil and coolant to carry excess heat away from the
turbocharger.
NOTE:Refer to the following chart for proper engine shutdown.
NOTE:Under certain conditions the engine fan will run after the
engine is turned off. These conditions are under high load
and high temperature conditions.
COOLING SYSTEM TIPS — AUTOMATIC
T
RANSMISSION
To reduce the potential for engine and transmission
overheating in high ambient temperature conditions, take
the following actions:
 City Driving — When stopped, shift the transmission
into NEUTRAL (N) and increase engine idle speed.
 Highway Driving — Reduce your speed. 
Up Steep Hills — Select a lower transmission gear.
 Air Conditioning — Turn it off temporarily.
NOTE:If the coolant temperature is too high, the A/C will auto -
matically turn off.
Do Not Operate The Engine With Low Oil
Pressure
If the Oil Pressure Warning Light turns on while driving,
stop the vehicle and shut down the engine as soon as
possible. A chime will sound when the light turns on. After
the vehicle is safely stopped, restart the engine and
monitor the Oil Pressure Warning Light. If the Oil Pressure
Warning Light is still illuminated, turn the engine OFF and contact an authorized dealer for further assistance. If the
lamp is no longer illuminated, the engine can be operated
but it is recommended to take the vehicle to an authorized
dealer as soon as possible.
NOTE:Do not operate the vehicle until the cause is corrected.
This light does not show how much oil is in the engine. The
engine oil level must be checked under the hood.
Driving Condition Load Turbocharger Temperature Idle Time (min.) Before Engine Shutdown
Stop and Go EmptyCoolNone
Stop and Go Medium 0.5
Highway Speeds MediumWarm 1.0
City Traffic Maximum GCWR 1.5
Highway Speeds Maximum GCWR 2.0
Uphill Grade Maximum GCWR Hot2.5
CAUTION!
If oil pressure falls to less than normal readings, shut
the engine off immediately. Failure to do so could result
in immediate and severe engine damage.

23_JL_OM_EN_USC_t.book Page 132

148STARTING AND OPERATING
POSSIBLE REASONS THE ENGINE DOES
N
OT AUTOSTOP
Prior to engine shut down, the system will check many
safety and comfort conditions to see if they are fulfilled.
Detailed information about the operation of the Stop/Start
system may be viewed in the instrument cluster display
Stop/Start screen. Situations when the engine will not
stop include (but not limited to):
 Driver’s seat belt is not buckled.
 Driver’s door is not closed.
 Battery temperature is too warm or cold.
 Battery charge is low.
 The vehicle is on a steep grade.
 Cabin heating or cooling is in process and an accept -
able cabin temperature has not been achieved.
 Gear selector is in MANUAL (M) mode.
 HVAC is set to full defrost mode at a high blower speed.
 HVAC is set to MAX A/C.
 Engine has not reached normal operating temperature.
 Engine or exhaust temperature is too high.
 The transmission is not in a forward gear.
 Hood is open.
 Transfer case is in 4L or N (Neutral).
 Brake pedal is not pressed with sufficient pressure.
 Accelerator pedal input.
 Vehicle speed threshold has not been achieved from
previous Autostop.
 Steering angle is beyond threshold (ESS Models Only).
 ACC is on and speed is set.
 Vehicle is at high altitude.
 System fault is present. It may be possible for the vehicle to be driven several
times without the Stop/Start system going into a STOP/
START READY state under more extreme conditions of the
previously listed items.
TO START THE ENGINE WHILE IN
A
UTOSTOP MODE
While in a forward gear, the engine will start when the
brake pedal is released or the throttle pedal is pressed.
The transmission will automatically re-engage upon
engine restart.
Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode:
 The transmission selector is moved out of DRIVE.
 To maintain cabin temperature comfort.
 Actual cabin temperature is significantly different than
temperature set on Auto HVAC.
 HVAC is set to full defrost mode.
 HVAC system temperature or fan speed is manually
adjusted higher.
 Battery voltage drops too low.
 Stop/Start OFF switch is pushed.
 A Stop/Start system error occurs.
 Stop/Start Autostop Active time exceeds five minutes.
 Transfer case is in 4L or N (Neutral).
 Steering wheel is turned beyond threshold (ESS
Models Only).
TO MANUALLY TURN OFF THE STOP/
S
TART SYSTEM

Stop/Start OFF Switch

Push the Stop/Start OFF switch (located on the switch
bank). The light on the switch will illuminate. The “Stop/
Start OFF” message will appear in instrument cluster
display within the Stop/Start section, and the autostop
function will be disabled
Úpage 108.
NOTE:The Stop/Start system will reset itself back to an ON
condition every time the ignition is turned off and back on.

23_JL_OM_EN_USC_t.book Page 148

182STARTING AND OPERATING
DRIVING ACROSS AN INCLINE
If at all possible, avoid driving across an incline. If it is
necessary, know your vehicle's abilities. Driving across an
incline places more weight on the downhill wheels, which
increases the possibilities of a downhill slide or rollover.
Make sure the surface has good traction with firm and
stable soils. If possible, transverse the incline at an angle
heading slightly up or down.
IF YOU STALL OR BEGIN TO LOSE HEADWAY
If you stall or begin to lose headway while climbing a steep
hill, allow your vehicle to come to a stop and immediately
apply the brake. Restart the engine and shift into
REVERSE. Back slowly down the hill allowing engine
braking to control the descent and apply your brakes, if
necessary, but do not allow the tires to lock.
Driving Through Water
Extreme care should be taken crossing any type of water.
Water crossings should be avoided, if possible, and only
be attempted when necessary in a safe, responsible
manner. Only drive through areas which are designated
and approved. Tread lightly and avoid damage to the
environment. Know your vehicle's abilities and be able to
recover it if something goes wrong. Never stop or shut a
vehicle off when crossing deep water unless you ingested
water into the engine air intake. If the engine stalls, do not
attempt to restart it. Determine if it has ingested water
first. The key to any crossing is low and slow. Shift into
FIRST gear (manual transmission), or DRIVE (automatic
transmission), with the transfer case in the 4L position
and proceed very slowly with a constant slow speed of {3
to 5 mph (5 to 8 km/h) maximum} and light throttle. Keep
the vehicle moving; do not try to accelerate through the
crossing. After crossing any water higher than the bottom
of the axle differentials, inspect all of the vehicle fluids for
signs of water ingestion.
BEFORE YOU CROSS ANY TYPE OF WATER
As you approach any type of water, you need to determine
if you can cross it safely and responsibly. If necessary, get
out and walk through the water or probe it with a stick. You
need to be sure of its depth, approach angle, current and
bottom condition. Be careful of murky or muddy waters;
check for hidden obstacles. Make sure you will not be
intruding on any wildlife, and you can recover the vehicle
if necessary. The key to a safe crossing is the water depth,
current and bottom conditions. On soft bottoms, the
vehicle will sink in, effectively increasing the water level on
the vehicle. Be sure to consider this when determining the
depth and the ability to safely cross.
CROSSING PUDDLES, POOLS, FLOODED
AREAS OR OTHER STANDING WATER
Puddles, pools, flooded or other standing water areas
normally contain murky or muddy waters. These water
types normally contain hidden obstacles and make it
difficult to determine an accurate water depth, approach
angle, and bottom condition. Murky or muddy water holes
are where you want to hook up tow straps prior to entering.
This makes for a faster, cleaner and easier vehicle
recovery. If you are able to determine you can safely cross,
than proceed using the low and slow method.
WARNING!
Driving across an incline increases the risk of a rollover,
which may result in severe injury.
WARNING!
If the engine stalls or you lose headway or cannot make
it to the top of a steep hill or grade, never attempt to
turn around. To do so may result in tipping and rolling
the vehicle, which may result in severe injury. Always
back carefully straight down a hill in REVERSE. Never
back down a hill in NEUTRAL using only the vehicle
brakes. Never drive diagonally across a hill, always drive
straight up or down.
CAUTION!
Water ingestion into the axles, transmission, transfer
case, engine or vehicle interior can occur if you drive
too fast or through too deep of water. Water can
cause permanent damage to engine, driveline or
other vehicle components, and your brakes will be
less effective once wet and/or muddy.
 When driving through water, do not exceed 5 mph
(8 km/h). Always check water depth before entering
as a precaution, and check all fluids afterward.
Driving through water may cause damage that may
not be covered by the New Vehicle Limited Warranty.
CAUTION!
Muddy waters can reduce the cooling system
effectiveness by depositing debris onto the radiator.

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290SAFETY
PERIODIC SAFETY CHECKS YOU SHOULD
M
AKE OUTSIDE THE VEHICLE
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread or sidewall. Inspect the tread for cuts
and cracks. Inspect sidewalls for cuts, cracks, and bulges.
Check the lug nut/bolt torque for tightness. Check the
tires (including spare) for proper cold inflation pressure.
Lights
Have someone observe the operation of brake lights and
exterior lights while you work the controls. Check turn
signal and high beam indicator lights on the instrument
panel.
Door Latches
Check for proper closing, latching, and locking.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
coolant, oil, or other fluid leaks. Also, if gasoline fumes are
detected or if fuel or brake fluid leaks are suspected, the
cause should be located and corrected immediately.
EXHAUST GAS
The best protection against carbon monoxide entry into
the vehicle body is a properly maintained engine exhaust
system.
Whenever a change is noticed in the sound of the exhaust
system, when exhaust fumes can be detected inside the
vehicle, or when the underside or rear of the vehicle is
damaged, have an authorized dealer inspect the complete
exhaust system and adjacent body areas for broken,
damaged, deteriorated, or mispositioned parts. Open seams or loose connections could permit exhaust fumes
to seep into the passenger compartment. In addition,
inspect the exhaust system each time the vehicle is raised
for lubrication or oil change. Replace as required.
CARBON MONOXIDE WARNINGS
WARNING!
Exhaust gases can injure or kill. They contain carbon
monoxide (CO), which is colorless and odorless.
Breathing it can make you unconscious and can
eventually poison you. To avoid breathing (CO), follow
these safety tips:

Do not run the engine in a closed garage or in
confined areas any longer than needed to move your
vehicle in or out of the area.
 If you are required to drive with the trunk/liftgate/
rear doors open, make sure that all windows are
closed and the climate control BLOWER switch is set
at high speed. DO NOT use the recirculation mode.
 If it is necessary to sit in a parked vehicle with the
engine running, adjust your heating or cooling
controls to force outside air into the vehicle. Set the
blower at high speed.
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon
monoxide poisoning:
Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas, which can
kill. Never run the engine in a closed area, such as a
garage, and never sit in a parked vehicle with the
engine running for an extended period. If the vehicle
is stopped in an open area with the engine running
for more than a short period, adjust the ventilation
system to force fresh, outside air into the vehicle.
 Guard against carbon monoxide with proper mainte -
nance. Have the exhaust system inspected every
time the vehicle is raised. Have any abnormal condi -
tions repaired promptly. Until repaired, drive with all
side windows fully open.
 When exiting the vehicle, always make sure the igni -
tion is in the OFF position, remove the key fob from
the vehicle and lock your vehicle.

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