2023 JEEP WRANGLER transmission fluid
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CLIMATE CONTROLS ..........................................................54Automatic Climate Control Descriptions
And Functions.............................................................. 54
Manual Climate Control Descriptions And
Functions ..................................................................... 57
Automatic Temperature Control (ATC) —
If Equipped .................................................................. 59
Climate Voice Commands ......................................... 59
Operating Tips ............................................................ 59
INTERIOR STORAGE AND EQUIPMENT ............................60 Storage ........................................................................ 60
Lighted Cupholders — If Equipped ............................. 61
USB/AUX Control ......................................................... 61
Power Outlets ............................................................. 62
Power Inverter — If Equipped .................................... 63
Auxiliary Switches — If Equipped ............................... 64
POWER WINDOWS — IF EQUIPPED ................................65 Auto-Down Feature .................................................... 66
Window Lockout Switch.............................................. 66
Wind Buffeting ............................................................ 66
WRANGLER TOPS ..............................................................66 Provided Tools ............................................................. 66
Lowering The Soft Top Into Sunrider®
Position
S
................................................................. 67
Raising The Soft Top
S
............................................ 77
Removing The Soft Top
S
....................................... 80
Installing The Soft Top ................................................ 81
Hard Top Front Panel(s) Removal
S
....................... 83
Hard Top Front Panel(s) Installation .......................... 87
Removing The Hard Top ............................................. 87
Installing The Hard Top............................................... 89
Sunrider® For Hard Top ............................................. 89
Power Sliding Top — If Equipped ................................ 91 DOOR FRAME ..................................................................... 95
Door Frame Removal................................................... 95
Door Frame Installation Four Door Models —
If Equipped ................................................................... 96
Door Frame Installation Two Door Models —
If Equipped ................................................................... 97
FOLDING WINDSHIELD ..................................................... 97 Lowering The Windshield ............................................ 98
Raising The Windshield ............................................... 99
HOOD ................................................................................ 100 Opening The Hood .................................................... 100
Closing The Hood ...................................................... 101
REAR SWING GATE ......................................................... 101 Cargo Area Features................................................. 102
ROOF LUGGAGE RACK — IF EQUIPPED ........................ 102
GETTING TO KNOW YOUR
INSTRUMENT PANEL
INSTRUMENT CLUSTER .................................................. 104 Instrument Cluster Descriptions
S
...................... 108
INSTRUMENT CLUSTER DISPLAY .................................. 108 Instrument Cluster Display Location And
Controls ..................................................................... 109
Oil Change Reset — If Equipped
S
....................... 110
Display And Messages ............................................. 110
Instrument Cluster Display Selectable Items ......... 112
Battery Saver On/Battery Saver Mode Message —
Electrical Load Reduction Actions — If Equipped ... 114
Diesel Displays.......................................................... 115
Diesel Particulate Filter (DPF) Messages ............... 115 Fuel System Messages ............................................ 116 WARNING LIGHTS AND MESSAGES ..............................116
Red Warning Lights ................................................... 117
Yellow Warning Lights ............................................... 119Yellow Indicator Lights .............................................. 122Green Indicator Lights............................................... 123White Indicator Lights ............................................... 123Blue Indicator Lights ................................................. 124
Gray Indicator Lights ................................................. 124
ONBOARD DIAGNOSTIC SYSTEM — OBD II ................... 124 Onboard Diagnostic System (OBD II)
Cybersecurity ............................................................. 125
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS ....................................................................... 125
STARTING AND OPERATING
STARTING THE ENGINE — GASOLINE ENGINE
(IF EQUIPPED) ...................................................................126 Manual Transmission — If Equipped ....................... 126
Automatic Transmission — If Equipped ................... 126
Normal Starting ........................................................ 126
AutoPark .................................................................... 127Extended Park Starting ............................................. 128If Engine Fails To Start .............................................. 128Extreme Cold Weather (Below –22°F Or −30°C) .. 128
After Starting.............................................................. 129
STARTING THE ENGINE — DIESEL ENGINE
(IF EQUIPPED) ...................................................................129 Automatic Transmission ........................................... 129
Extreme Cold Weather .............................................. 129Normal Starting ......................................................... 130
Starting Fluids............................................................ 130
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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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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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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
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112GETTING TO KNOW YOUR INSTRUMENT PANEL
INSTRUMENT CLUSTER DISPLAY
S
ELECTABLE ITEMS
The instrument cluster display can be used to view the
following main menu items:
NOTE:Depending on the vehicles options, feature settings may
vary.
Speedometer
Push and release the up or down arrow button
until the speedometer menu icon is displayed in the
instrument cluster display. Push and release the OK
button to toggle between MPH and km/h.
Vehicle Info
Push and release the up or down arrow button
until the Vehicle Info menu icon is displayed in the
instrument cluster display. Push and release the left or
right arrow button to scroll through the information
submenus and push and release the OK button to select
or reset the resettable submenus.
Off Road
Push and release the up or down arrow button
until the Off Road menu icon is displayed in the instrument
cluster display. Push and release the left or right
arrow button to scroll through the information submenus.
Drivetrain
Front Wheel Angle: displays the graphical and
numerical value of calculated average front wheel
angle from the steering wheel orientation.
Transfer Case Lock Status: displays “Lock”
graphic only during 4WD High, 4WD High Part
Time, 4WD Low status.
Axle Lock And Sway Bar Status (If Equipped):
displays front and rear or rear only axle locker
graphic, and sway bar connection graphic with text
message (connected or disconnected).
Pitch And Roll
Displays the pitch and roll of the vehicle in the
graphic with the angle number on the screen.
NOTE:When vehicle speed becomes too high to display the pitch
and roll, “- -” will display in place of the numbers, and the
graphic will be greyed out. A message indicating the
necessary speed for the feature to become available will
also display.
Driver Assist — If Equipped
The Driver Assist menu displays the status of the ACC
systems.
Push and release the up or down arrow button
until the Driver Assist menu is displayed in the instrument
cluster display.
Adaptive Cruise Control (ACC) Feature — If Equipped
The instrument cluster display displays the current ACC
system settings. The information displayed depends on
ACC system status.
Push the ACC ON/OFF button (located on the steering
wheel) until one of the following displays in the instrument
cluster display:
Adaptive Cruise Control Off
When ACC is deactivated, the display will read “Adaptive
Cruise Control Off.”
Adaptive Cruise Control Ready
When ACC is activated but the vehicle speed setting has
not been selected, the display will read “Adaptive Cruise
Control Ready.”
Speedometer
Driver Assist — If
EquippedStop/Start
Vehicle Info Fuel Economy Audio
Off Road Trip Info Messages
Screen Setup Phone Call
Status — If
Equipped
Tire PressureSingle Gauge
Submenu — If
EquippedCritical Level
Logic — If
Equipped
Oil Life Diesel Exhaust
Fluid Level — If
EquippedCoolant
Temperature
Oil Pressure Oil Temperature Transmission
Temperature —
Automatic
Transmission
Only
Battery Voltage
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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.
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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.
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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.
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