brake fluid 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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5
ANDROID AUTO™ & APPLE CARPLAY® —
IF EQUIPPED ..................................................................... 222Android Auto™

S
.................................................... 222
Apple CarPlay®
S
.................................................. 224
Android Auto™ And Apple CarPlay® Tips And
Tricks.......................................................................... 225
CONNECTED VEHICLE SERVICES — IF EQUIPPED ...... 225 Is My Vehicle Connected? ........................................ 225Introduction To Connected Vehicle Services .......... 226

Getting Started With Connected Vehicle Services ... 227

Using SiriusXM Guardian™ ...................................... 228
Manage My SiriusXM Guardian™ Account ............. 237
CONNECTED SERVICES FAQS ....................................... 237 Connected Services SOS FAQs — If Equipped ........ 237
Connected Services Remote Door Lock/Unlock
FAQs .......................................................................... 237
Connected Services Roadside Assistance FAQs .... 237Connected Services Send & Go FAQs —
If Equipped ............................................................... 238
Connected Services Vehicle Finder FAQs ............... 238
Connected Services Stolen Vehicle Assistance
FAQs — If Equipped .................................................. 238
Connected Services Remote Vehicle Start FAQs ... 238
Connected Services Remote Horn & Lights FAQs .. 239
Connected Services Account FAQs — If Equipped .. 239
Data Collection & Privacy ......................................... 240
RADIO OPERATION AND MOBILE PHONES .................. 240 Regulatory And Safety Information .......................... 241
OFF-ROAD PAGES — IF EQUIPPED ................................ 241 Off-Road Pages Status Bar ...................................... 241
Drivetrain .................................................................. 242
Accessory Gauge ...................................................... 242Pitch & Roll ............................................................... 242
TrailCam — If Equipped ............................................. 243
SAFETY
SAFETY FEATURES .......................................................... 244 Anti-Lock Brake System (ABS) ................................ 244
Rear Seat Reminder Alert (RSRA) — If Equipped .... 244
Electronic Brake Control (EBC) System .................. 245
AUXILIARY DRIVING SYSTEMS ...................................... 252 Blind Spot Monitoring (BSM) — If Equipped ........... 252
Forward Collision Warning (FCW) With
Mitigation — If Equipped........................................... 255Tire Pressure Monitoring System (TPMS) ............... 257
OCCUPANT RESTRAINT SYSTEMS ............................... 261 Occupant Restraint Systems Features ................... 261
Important Safety Precautions .................................. 261
Seat Belt Systems .................................................... 261
Supplemental Restraint Systems (SRS).................. 267
Child Restraints ........................................................ 277
SAFETY TIPS ..................................................................... 288 Transporting Passengers ......................................... 288
Transporting Pets ..................................................... 288
Connected Vehicles .................................................. 288Safety Checks You Should Make Inside The
Vehicle ...................................................................... 288
Periodic Safety Checks You Should Make Outside
The Vehicle ................................................................ 290Exhaust Gas .............................................................. 290
Carbon Monoxide Warnings ..................................... 290
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS ..................................... 291
ASSIST AND SOS SYSTEM — IF EQUIPPED .................. 291 JACKING AND TIRE CHANGING

S
...............................293
Preparations For Jacking ......................................... 294
Jack Location ............................................................ 294 Spare Tire Removal .................................................. 295
Jacking Instructions .................................................. 295
JUMP STARTING ..............................................................298 Preparations For Jump Start..................................... 298
Jump Starting Procedure .......................................... 299
IF YOUR ENGINE OVERHEATS......................................... 300
MANUAL PARK RELEASE ................................................301
FREEING A STUCK VEHICLE ........................................... 302
TOWING A DISABLED VEHICLE.......................................303 Four–Wheel Drive Models ........................................ 303Without The Key Fob ................................................. 304
Emergency Tow Hooks — If Equipped ..................... 304
ENHANCED ACCIDENT RESPONSE SYSTEM (EARS) ..305
EVENT DATA RECORDER (EDR)......................................305
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GASOLINE ENGINE ...........306 Maintenance Plan ..................................................... 307
SCHEDULED SERVICING — DIESEL ENGINE .................310 Maintenance Plan — Diesel Fuel Up To B5
Biodiesel .................................................................... 311Additional Maintenance — B6 To B20 Biodiesel ..... 313
ENGINE COMPARTMENT ................................................. 314 2.0L Gasoline Engine ............................................... 3143.6L Gasoline Engine ............................................... 3153.0L Diesel Engine .................................................... 316
Checking Oil Level ..................................................... 317Adding Washer Fluid ................................................. 317
Maintenance-Free Battery ....................................... 317Pressure Washing ..................................................... 318

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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

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GETTING TO KNOW YOUR INSTRUMENT PANEL111
Messages include the following, but not limited to:
NOTE:Certain messages may require dealer service.
Front Seat Belts Unbuckled Oil Change DueACC Override
Driver Seat Belt Unbuckled Fuel LowCruise Set To XXX mph or km/h
Passenger Seat Belt Unbuckled Service Anti-lock Brake SystemService Shifter
Traction Control Off Service Electronic Throttle ControlTire Pressure Screen With Low Tire(s)
Washer Fluid Low Service Power SteeringService Tire Pressure System
Oil Pressure Low Cruise OffPark Brake Engaged
Oil Level Low – If Equipped Cruise ReadyBrake Fluid Low
Engine Temperature Hot Lights OnRight Front Turn Signal Light Out
Right Rear Turn Signal Light Out Left Front Turn Signal Light OutLeft Rear Turn Signal Light Out
Ignition or Accessory On Vehicle Not In ParkRemote Start Active Push Start Button
Remote Start Canceled Fuel Low Remote Start Canceled Hood OpenRemote Start Canceled Liftgate Open
Remote Start Canceled Door Open Remote Start Canceled Time ExpiredRemote Start Disabled Start To Reset
Service Air Bag System Service Air Bag Warning LightDoor Open
Doors Open Hood OpenVehicle Speed Too High To Shift to D
Liftgate Open Shift Not AllowedVehicle Speed is Too High to Shift to R
Vehicle Speed is Too High to Shift to P Service Transmission
3

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GETTING TO KNOW YOUR INSTRUMENT PANEL117
the information 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
telltales are optional and may not appear.
RED WARNING LIGHTS
Air Bag Warning Light
This warning light will illuminate to indicate a
fault with the air bag, and will turn on for four to
eight seconds as a bulb check when the
ignition is placed in the ON/RUN or ACC/ON/
RUN position. This light will illuminate with a single chime
when a fault with the air bag has been detected, it will stay
on until the fault is cleared. If the light is not on during
startup, stays on, or turns on while driving, have the
system inspected at an authorized dealer as soon as
possible.
Brake Warning Light
This warning light monitors various brake
functions, including brake fluid level and
parking brake application. If the brake light
turns on it may indicate that the parking brake
is applied, that the brake fluid level is low, or that there is
a problem with the Anti-Lock Brake System reservoir.
If the light remains on when the parking brake has been
disengaged, and the fluid level is at the full mark on the
master cylinder reservoir, it indicates a possible brake
hydraulic system malfunction or that a problem with the
Brake Booster has been detected by the Anti-Lock Brake
System (ABS) / Electronic Stability Control (ESC) system.
In this case, the light will remain on until the condition has been corrected. If the problem is related to the brake
booster, the ABS pump will run when applying the brake,
and a brake pedal pulsation may be felt during each stop.
The dual brake system provides a reserve braking capacity
in the event of a failure to a portion of the hydraulic
system. A leak in either half of the dual brake system is
indicated by the Brake Warning Light, which will turn on
when the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is corrected.
NOTE:The light may flash momentarily during sharp cornering
maneuvers, which change fluid level conditions. The
vehicle should have service performed, and the brake
fluid level checked.
If brake failure is indicated, immediate repair is necessary.
Vehicles equipped with the Anti-Lock Brake System (ABS)
are also equipped with Electronic Brake Force Distribution
(EBD). In the event of an EBD failure, the Brake Warning
Light will turn on along with the ABS Light. Immediate
repair to the ABS system is required.
Operation of the Brake Warning Light can be checked by
turning the ignition switch from the OFF position to the
ON/RUN position. The light should illuminate for
approximately two seconds. The light should then turn off
unless the parking brake is applied or a brake fault is
detected. If the light does not illuminate, have the light
inspected by an authorized dealer.
The light also will turn on when the parking brake is
applied with the ignition switch in the ON/RUN position.
NOTE:This light shows only that the parking brake is applied. It
does not show the degree of brake application.
Battery Charge Warning Light
This warning light will illuminate when the
battery is not charging properly. If it stays on
while the engine is running, there may be a
malfunction with the charging system. Contact
an authorized dealer as soon as possible.
This indicates a possible problem with the electrical
system or a related component.
Door Open Warning Light
This indicator will illuminate when a door is
ajar/open and not fully closed.
NOTE:If the vehicle is moving, there will also be a single chime.
WARNING!
Driving a vehicle with the red brake light on is
dangerous. Part of the brake system may have failed. It
will take longer to stop the vehicle. You could have a
collision. Have the vehicle checked immediately.
3

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GETTING TO KNOW YOUR INSTRUMENT PANEL119
Swing Gate Open Warning Light
This warning light will illuminate when the
swing gate is open.
NOTE:If the vehicle is moving, there will also be a single chime.

Transmission Temperature Warning Light —
If Equipped

This warning light will illuminate to warn of a
high transmission fluid temperature. This may
occur with strenuous usage such as trailer
towing. If this light turns on, stop the vehicle
and run the engine at idle or slightly faster, with the
transmission in PARK (P) or NEUTRAL (N), until the light
turns off. Once the light turns off, you may continue to
drive normally.
Vehicle Security Warning Light —
If Equipped
This light will flash at a fast rate for
approximately 15 seconds when the Vehicle
Security system is arming, and then will flash
slowly until the vehicle is disarmed.
YELLOW WARNING LIGHTS
Anti-Lock Brake System (ABS) Warning
Light
This warning light monitors the ABS. The light
will turn on when the ignition is placed in the
ON/RUN or ACC/ON/RUN position and may
stay on for as long as four seconds.
If the ABS light remains on or turns on while driving, then
the Anti-Lock portion of the brake system is not
functioning and service is required as soon as possible.
However, the conventional brake system will continue to
operate normally, assuming the Brake Warning Light is not
also on. If the ABS light does not turn on when the ignition is placed
in the ON/RUN or ACC/ON/RUN position, have the brake
system inspected by an authorized dealer.
Electronic Stability Control (ESC) Active
Warning Light — If Equipped
This warning light will indicate when the
Electronic Stability Control system is Active.
The ESC Indicator Light in the instrument
cluster will come on when the ignition is placed
in the ON/RUN or ACC/ON/RUN position, and when ESC is
activated. It should go out with the engine running. If the
ESC Indicator Light comes on continuously with the engine
running, a malfunction has been detected in the ESC
system. If this warning light remains on after several
ignition cycles, and the vehicle has been driven several
miles (kilometers) at speeds greater than 30 mph
(48 km/h), see an authorized dealer as soon as possible
to have the problem diagnosed and corrected.
 The ESC OFF Indicator Light and the ESC Indicator Light
come on momentarily each time the ignition is placed
in the ON/RUN or ACC/ON/RUN position.
 The ESC system will make buzzing or clicking sounds
when it is active. This is normal; the sounds will stop
when ESC becomes inactive.
 This light will come on when the vehicle is in an ESC
event.
WARNING!
If you continue operating the vehicle when the
Transmission Temperature Warning Light is illuminated
you could cause the fluid to boil over, come in contact
with hot engine or exhaust components and cause a
fire. If you continue to operate the vehicle when the
“CLUTCH HOT” message is displayed, or the
Transmission Temperature Warning Light is illuminated,
you could cause the clutch to overheat and cause a fire.
CAUTION!
Continuous driving with the Transmission Temperature
Warning Light illuminated will eventually cause severe
transmission damage or transmission failure. If you
continue to operate the vehicle when the “CLUTCH
HOT” message is displayed, or the Transmission
Temperate Warning Light is illuminated, you could
cause the clutch to overheat and cause severe clutch
damage, transmission damage, or failure.
3

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130STARTING AND OPERATING
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 illumi -
nated during the preheat process. When the engine Wait
To Start telltale goes off the engine will automatically
crank.
3. The system will automatically engage the starter to crank the engine. If the vehicle fails to start, the
starter will disengage automatically 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.
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.
NORMAL OPERATION — 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.
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
Úpage 321.
WARNING!
 Do not leave children or animals inside parked vehi -
cles in hot weather. Interior heat buildup may cause
serious injury or death.
 When leaving the vehicle, always make sure the
keyless ignition node is in the OFF position, 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 unattended is dangerous for a
number of reasons. A child or others could be seri -
ously or fatally injured. Children should be warned
not to touch the parking brake, brake pedal or the
gear selector.
 Do not leave the key fob in or near the vehicle, or in
a location accessible to children, and do not leave
the ignition of a vehicle equipped with Keyless
Enter ‘n Go™ in the ACC or ON/RUN position. A child
could operate power windows, other controls, or
move the vehicle.

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STARTING AND OPERATING143
N (Neutral)
Neutral — This range disengages both the front and rear
driveshafts from the powertrain. To be used for flat towing
behind another vehicle
Úpage 176.
4L
Four-Wheel Drive Low Range — This range provides low
speed four-wheel drive. It maximizes torque to the front
driveshaft, forcing the front and rear wheels to rotate at
the same speed. This range provides additional traction
and maximum pulling power for loose, slippery road
surfaces only. Do not exceed 25 mph (40 km/h).
This transfer case is designed to be driven in the
two-wheel drive position (2H) or four-wheel drive position
(4H AUTO) for normal street and highway conditions on dry
hard surfaced roads.
For variable driving conditions, the 4H AUTO mode can be
used. In this mode, the front axle is engaged, but the
vehicle's power is sent to the rear wheels. Four-wheel drive
will be automatically engaged when the vehicle senses a loss of traction. Because the front axle is engaged, this
mode will result in lower fuel economy than the 2H mode.
In the event that additional traction is required, the
transfer case 4H and 4L positions can be used to lock the
front and rear driveshafts together, forcing the front and
rear wheels to rotate at the same speed. The 4H and 4L
positions are intended for loose, slippery road surfaces
only and not intended for normal driving. Driving in the 4H
and 4L positions on hard-surfaced roads will cause
increased tire wear and damage to the driveline
components. For further information on shifting into 4H or
4L
Úpage 143.
The instrument cluster alerts the driver that the vehicle is
in four-wheel drive, and the front and rear driveshafts are
locked together. The light will illuminate when the transfer
case is shifted into the 4H position.
When operating your vehicle in 4L, the engine speed will
be approximately three times (four times for Rubicon
models) that of the 2H or 4H positions at a given road
speed. Take care not to overspeed the engine.
Proper operation of four-wheel drive vehicles depends on
tires of equal size, type, and circumference on each wheel.
Any difference will adversely affect shifting and cause
damage to the transfer case.
Because four-wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.
Shifting Procedures
2H TO 4H AUTO OR 4H AUTO TO 2H
Shifting between 2H and 4H AUTO can be made with the
vehicle stopped or in motion. The preferred shifting speed would be 0 to 45 mph (72 km/h). With the vehicle in
motion, the transfer case will engage/disengage faster if
you momentarily release the accelerator pedal after
completing the shift. Do not accelerate while shifting the
transfer case. Apply a constant force when shifting the
transfer case lever.
2H/4H AUTO TO 4H PART TIME OR 4H PART
TIME TO 2H/4H AUTO
Shifting between 2H/4H AUTO to 4H PART TIME can be
made with the vehicle stopped or in motion. The preferred
shifting speed would be 0 to 45 mph (72 km/h). With the
vehicle in motion, the transfer case will engage/disengage
faster if you momentarily release the accelerator pedal
after completing the shift. Do not accelerate while shifting
the transfer case. Apply a constant force when shifting the
transfer case lever.
NOTE:
 Do not attempt to make a shift while only the front or
rear wheels are spinning. The front and rear driveshaft
speeds must be equal for the shift to take place.
Shifting while only the front or rear wheels are spinning
can cause damage to the transfer case.
 Delayed shifts out of four-wheel drive may be experi -
enced due to uneven tire wear, low or uneven tire pres -
sures, excessive vehicle loading, or cold temperatures.
 Shifting effort will increase with speed, this is normal.
During cold weather, you may experience increased effort
in shifting until the transfer case fluid warms up. This is
normal.
WARNING!
You or others could be injured or killed if you leave the
vehicle unattended with the transfer case in the (N)
Neutral position without first fully engaging the parking
brake. The transfer case (N) Neutral position
disengages both the front and rear driveshafts from the
powertrain, and will allow the vehicle to roll, even if the
automatic transmission is in PARK (or manual
transmission is in gear). The parking brake should
always be applied when the driver is not in the vehicle.
4

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170STARTING AND OPERATING
Payload
The payload of a vehicle is defined as the allowable load
weight a truck can carry, including the weight of the driver,
all passengers, options and cargo.
Gross Axle Weight Rating (GAWR)
The GAWR is the maximum permissible load on the front
and rear axles. The load must be distributed in the cargo
area so that the GAWR of each axle is not exceeded.
Each axle GAWR is determined by the components in the
system with the lowest load carrying capacity (axle,
springs, tires or wheels). Heavier axles or suspension
components sometimes specified by purchasers for
increased durability do not necessarily increase the
vehicle's GVWR.
Tire Size
The tire size on the Vehicle Certification Label represents
the actual tire size on your vehicle. Replacement tires
must be equal to the load capacity of this tire size.
Rim Size
This is the rim size that is appropriate for the tire size
listed.
Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Loading
The actual total weight and the weight of the front and rear
of your vehicle at the ground can best be determined by
weighing it when it is loaded and ready for operation.
The entire vehicle should first be weighed on a commercial
scale to ensure that the GVWR has not been exceeded.
The weight on the front and rear of the vehicle should then
be determined separately to be sure that the load is
properly distributed over the front and rear axle. Weighing
the vehicle may show that the GAWR of either the front or
rear axles has been exceeded but the total load is within
the specified GVWR. If so, weight must be shifted from
front to rear or rear to front as appropriate until the
specified weight limitations are met. Store the heavier
items down low and be sure that the weight is distributed
equally. Stow all loose items securely before driving.
Improper weight distributions can have an adverse effect
on the way your vehicle steers and handles and the way
the brakes operate.
TRAILER TOWING
In this section you will find safety tips and information on
limits to the type of towing you can reasonably do with your
vehicle. Before towing a trailer, carefully review this
information to tow your load as efficiently and safely as
possible.
To maintain the New Vehicle Limited Warranty coverage,
follow the requirements and recommendations in this
manual concerning vehicles used for trailer towing.
COMMON TOWING DEFINITIONS
The following trailer towing related definitions will assist
you in understanding the following information:
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total allowable weight of your vehicle.
This includes driver, passengers, cargo and tongue
weight. The total load must be limited so that you do not
exceed the GVWR
Úpage 169.
Gross Trailer Weight (GTW)
The GTW is the weight of the trailer plus the weight of all
cargo, consumables and equipment (permanent or
temporary) loaded in or on the trailer in its "loaded and
ready for operation" condition.
The recommended way to measure GTW is to put your fully
loaded trailer on a vehicle scale. The entire weight of the
trailer must be supported by the scale.
WARNING!
Do not load your vehicle any heavier than the GVWR or
the maximum front and rear GAWR. If you do, parts on
your vehicle can break, or it can change the way your
vehicle handles. This could cause you to lose control.
Overloading can shorten the life of your vehicle.

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