check engine JEEP WAGONEER 2023 Owners Manual

6
SAFETY
SAFETY FEATURES........................................................... 239
Anti-Lock Brake System (ABS) ................................. 239Rear Seat Reminder Alert (RSRA) ............................ 240
Drowsy Driver Detection (DDD) — If Equipped ........ 240
Electronic Brake Control (EBC) System .................. 241
AUXILIARY DRIVING SYSTEMS ...................................... 247 Blind Spot Monitoring (BSM) .................................... 247
Forward Collision Warning (FCW)
With Mitigation .......................................................... 250
Tire Pressure Monitoring System (TPMS) ................ 252
OCCUPANT RESTRAINT SYSTEMS ................................ 256 Occupant Restraint Systems Features ................... 256Important Safety Precautions .................................. 256Seat Belt Systems .................................................... 257
Supplemental Restraint Systems (SRS) .................. 264Child Restraints ........................................................ 275
SAFETY TIPS ..................................................................... 287 Transporting Passengers .......................................... 287
Transporting Pets ...................................................... 287Connected Vehicles .................................................. 287
Safety Checks You Should Make Inside
The Vehicle ............................................................... 287
Periodic Safety Checks You Should Make
Outside The Vehicle .................................................. 289
Exhaust Gas .............................................................. 289Carbon Monoxide Warnings ..................................... 289
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS ..................................... 290
ASSIST AND SOS SYSTEM— IF EQUIPPED ................... 290
JACKING AND TIRE CHANGING...................................... 293 Preparations For Jacking ......................................... 293
Jack And Tools Location ........................................... 294Spare Tire Stowage................................................... 295
Spare Tire Removal .................................................. 295Jacking Instructions ................................................. 296
JUMP STARTING ............................................................. 300 Preparations For Jump Start .................................... 300Jump Starting Procedure.......................................... 301
REFUELING IN EMERGENCY........................................... 302
IF YOUR ENGINE OVERHEATS ........................................ 303
MANUAL PARK RELEASE .............................................. 303
FREEING A STUCK VEHICLE .......................................... 305
TOWING A DISABLED VEHICLE ..................................... 306 Rear-Wheel Drive Models......................................... 307
Four-Wheel Drive Models ......................................... 307
Emergency Tow Hooks — If Equipped ..................... 308
ENHANCED ACCIDENT RESPONSE SYSTEM
(EARS) .............................................................................. 308
EVENT DATA RECORDER (EDR) ..................................... 308
SERVICING AND MAINTENANCE
SCHEDULED SERVICING .................................................. 309 Maintenance Plan ..................................................... 310
ENGINE COMPARTMENT ................................................. 313 3.0L Engine................................................................ 313
5.7L Engine................................................................ 314
6.4L Engine................................................................ 315
Checking Oil Level — 3.0L Engines .......................... 316
Checking Oil Level — 5.7L & 6.4L Engines .............. 317
Adding Washer Fluid ................................................ 317
Maintenance-Free Battery ....................................... 318Pressure Washing ..................................................... 318
VEHICLE MAINTENANCE .................................................. 318 Engine Oil .................................................................. 319
Engine Oil Filter ....................................................... 319
Engine Air Cleaner Filter ........................................ 319Air Conditioner Maintenance ................................. 320
Accessory Drive Belt Inspection ............................... 323Body Lubrication ....................................................... 323
Windshield Wiper Blades ......................................... 324
Exhaust System ........................................................ 325
Cooling System .......................................................... 326
Brake System ........................................................... 328
Automatic Transmission ........................................... 329
Front/Rear Axle Fluid ............................................... 330Transfer Case ............................................................ 330Fuses .......................................................................... 331Bulb Replacement .................................................... 349

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13
Night Vision Pedestrian Detected Warning Light Úpage 113
Engine Check/Malfunction Indicator Warning Light (MIL)
Úpage 112
Oil Level Sensor Fault Warning Light
Úpage 113
Service 4WD Warning Light
Úpage 113
Service Adaptive Cruise Control (ACC) Warning Light
Úpage 113
Service Forward Collision (FCW) Or Pedestrian Emergency Braking (PEB) Warning Light

Úpage 113
Service Stop/Start System Warning Light
Úpage 113
Tire Pressure Monitoring System (TPMS) Warning Light
Úpage 114
Yellow Warning Lights
Towing Hook Breakdown Warning Light
Úpage 114
Yellow Indicator Lights 4WD Low Indicator Light
Úpage 114
Air Suspension Active Indicator Light
Úpage 115
Air Suspension Aerodynamic Height Indicator Light
Úpage 115
Air Suspension Entry/Exit Indicator Light
Úpage 115
Air Suspension Off-Road 1 Indicator Light
Úpage 115
Air Suspension Off-Road 2 Indicator Light
Úpage 115
Yellow Warning Lights
1

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20GETTING TO KNOW YOUR VEHICLE
Programming And Requesting Additional
Key Fobs
Programming the key fob may be performed by an
authorized dealer.
NOTE:
Once a key fob is programmed to a vehicle, it cannot be
repurposed and reprogrammed to another vehicle.
 Only key fobs that are programmed to the vehicle elec -
tronics can be used to start and operate the vehicle.
Duplication of key fobs may be performed at an authorized
dealer. This procedure consists of programming a blank
key fob to the vehicle electronics. A blank key fob is one
that has never been programmed.
NOTE:
 When having the Sentry Key Immobilizer system
serviced, bring all vehicle keys with you to an autho -
rized dealer.
 Keys must be ordered to the correct key cut to match
the vehicle locks.
SENTRY KEY
The Sentry Key Immobilizer system prevents unauthorized
vehicle operation by disabling the engine. The system
does not need to be armed or activated. Operation is
automatic, regardless of whether the vehicle is locked or
unlocked.
The system uses a key fob, keyless push button ignition
and a Radio Frequency (RF) receiver to prevent
unauthorized vehicle operation. Therefore, only key fobs
that are programmed to the vehicle can be used to start
and operate the vehicle. The system cannot reprogram a
key fob obtained from another vehicle.
After placing the ignition in the ON/RUN position, the
Vehicle Security Light will turn on for three seconds for a
bulb check. If the light remains on after the bulb check, it
indicates that there is a problem with the electronics. In
addition, if the light begins to flash after the bulb check, it
indicates that someone attempted to start the engine with
an invalid key fob. In the event that a valid key fob is used
to start the engine but there is an issue with the vehicle
electronics, the engine will start and shut off after two
seconds.
If the Vehicle Security Light turns on during normal vehicle
operation (vehicle running for longer than 10 seconds), it
indicates that there is a fault in the electronics. Should
this occur, have the vehicle serviced as soon as possible
by an authorized dealer. All of the key fobs provided with your new vehicle have
been programmed to the vehicle electronics
Úpage 382.
NOTE:A key fob that has not been programmed is also
considered an invalid key.
IGNITION SWITCH
KEYLESS ENTER ‘N GO™ IGNITION
This feature allows the driver to operate the ignition switch
with the push of a button as long as the key fob is in the
passenger compartment.
The START/STOP ignition button has several operating
modes that are labeled and will illuminate when in
position. These modes are OFF, ON/RUN, and START.
WARNING!

Always remove the key fobs from the vehicle and lock
all doors when leaving the vehicle unattended.
 For vehicles equipped with Keyless Enter ‘n Go™ Igni -
tion, always remember to place the ignition in the
OFF position when exiting the vehicle.
CAUTION!
The Sentry Key Immobilizer system is not compatible
with some aftermarket Remote Start systems. Use of
these systems may result in vehicle starting problems
and loss of security protection.

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80GETTING TO KNOW YOUR VEHICLE
The rear cargo power outlet is located in the right rear
cargo area.

Rear Cargo Power Outlet

NOTE:The rear cargo power outlet can be changed to battery
(powered at all times) by switching the power outlet right
rear quarter panel fuse in the fuse panel from fuse
location F90 to F91
Úpage 331.POWER INVERTER
There is a 115 Volt, 150 W inverter outlet located on the
back of the center console to convert DC current to AC
current. This outlet can power cellular phones, electronics
and other low power devices requiring power up to 150 W.
Certain video game consoles exceed this power limit, as
will most power tools.

Power Inverter

The power inverter is designed with built-in overload
protection. If the power rating of 150 W is exceeded, the
power inverter automatically shuts down. Once the
electrical device has been removed from the outlet the
inverter should automatically reset. To avoid overloading
the circuit, check the power ratings on electrical devices
prior to using the inverter.
WARNING!
To avoid serious injury or death:
 Only devices designed for use in this type of outlet
should be inserted into any 12 Volt outlet.
 Do not touch with wet hands.
 Close the lid when not in use and while driving the
vehicle.
 If this outlet is mishandled, it may cause an electric
shock and failure.
CAUTION!
Many accessories that can be plugged in draw power
from the vehicle's battery, even when not in use (i.e.,
cellular phones, etc.). Eventually, if plugged in long
enough, the vehicle's battery will discharge suffi -
ciently to degrade battery life and/or prevent the
engine from starting.
 Accessories that draw higher power (i.e., coolers,
vacuum cleaners, lights, etc.) will degrade the
battery even more quickly. Only use these intermit -
tently and with greater caution.
 After the use of high power draw accessories, or long
periods of the vehicle not being started (with acces -
sories still plugged in), the vehicle must be driven a
sufficient length of time to allow the generator to
recharge the vehicle's battery.
WARNING!
To avoid serious injury or death:
 Do not insert any objects into the receptacles.
 Do not touch with wet hands.
 Close the lid when not in use.
 If this outlet is mishandled, it may cause an electric
shock and failure.

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GETTING TO KNOW YOUR INSTRUMENT PANEL97
Use this QR code to access your digital
experience.
INSTRUMENT CLUSTER
D
ESCRIPTIONS

1. Speedometer

Indicates vehicle speed.
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. Tachometer
Indicates the engine speed in revolutions per
minute (RPM x 1000).
4. Fuel Gauge The pointer shows the level of fuel in the fuel tank
when the Keyless Push Button Ignition is in the
ON/RUN position.
 The fuel pump symbol points to the
side of the vehicle where the fuel door
is located.
NOTE:The Instrument Cluster Warning Indicators will illuminate
briefly for a bulb check when the ignition is first cycled.
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
Úpage 326.
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.
3

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GETTING TO KNOW YOUR INSTRUMENT PANEL99
INSTRUMENT CLUSTER DESCRIPTIONS

1. Speedometer

Indicates vehicle speed.
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. Tachometer
Indicates the engine speed in revolutions per
minute (RPM x 1000).
4. Fuel Gauge The pointer shows the level of fuel in the fuel tank
when the Keyless Push Button Ignition is in the
ON/RUN position.
 The fuel pump symbol points to the
side of the vehicle where the fuel door
is located.
NOTE:The Instrument Cluster Warning Indicators will illuminate
briefly for a bulb check when the ignition is first cycled.
INSTRUMENT CLUSTER DISPLAY
Depending on your vehicles trim level, features and
options may vary.
Your vehicle is 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 how systems are working and give you warnings
when they are not. The steering wheel mounted controls
allow you to scroll through the main menus and
submenus. You can access the specific information you
want and make selections and adjustments.
LOCATION AND CONTROLS

Instrument Cluster Display/Controls Location

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
Úpage 326.
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.
1 – Instrument Cluster Display Screen
2 – Instrument Cluster Display Controls
3

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GETTING TO KNOW YOUR INSTRUMENT PANEL101
Navigate Left or Right to highlight desired tile
 Press OK to select the tile and navigate to the selected
submenu and press OK again to add your selection to
your tile view
 The main menu options of the home screen are Driver
Info, Vehicle Info, Navigation — If Equipped, Audio, and
Off Road

Customizable Tile Layout

You can customize your Instrument Cluster Display with up
to five tiles that may consist of the following:
NOTE:These options may vary based on your vehicle trim level.
Navigation
 Map (Route Set / Route Not Set)
 Trip A / Trip B 
Vehicle Info
 Coolant Temp
 Trans Temp
 Oil Temp
 Oil Pressure
 Battery Voltage
 Oil Life
 Tire Pressure
 Fuel Economy
 Driver Info – If Equipped
 Posted Speed Limit Sign
 Driver Assist
 Audio
 Audio Info
 Off Road – If Equipped
 Selec-Terrain / Air Suspension Status
 Steering Angle
 Pitch
 Roll
 Trailer Tow – If Equipped
• Trailer Trip
• Trailer Brake
• Trailer Tire Pressure
ENGINE OIL LIFE RESET
Use this QR code to access your digital
experience.
Oil Level
The 3.0L engine does not have a
traditional “dipstick” and there is no
need to manually check the oil level
Úpage 316.
Oil Change Required
Your vehicle is equipped with an engine oil change
indicator system. The “Oil Change Required” message will
display in the instrument cluster display for five seconds
after a single chime has sounded, to indicate the next
scheduled oil change interval. The engine oil change
indicator system is duty cycle based, which means the
engine oil change interval may fluctuate, dependent upon
your personal driving style and environmental conditions.
Unless reset, this message will continue to display each
time the ignition is placed in the ON/RUN position. To turn
off the message temporarily, push and release the OK or
arrow buttons. To reset the oil change indicator system
(after performing the scheduled maintenance), refer to
the following procedure.3

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108GETTING TO KNOW YOUR INSTRUMENT PANEL
When load reduction is activated, the message “Battery
Saver On” or “Battery Saver Mode” will appear in the
instrument cluster.
These messages indicate the vehicle battery has a low
state of charge and continues to lose electrical charge at
a rate that the charging system cannot sustain.
NOTE:
The charging system is independent from load reduc -
tion. The charging system performs a diagnostic on the
charging system continuously.
 If the Battery Charge Warning Light is on it may indicate
a problem with the charging system
Úpage 109.
The electrical loads that may be switched off (if equipped),
and vehicle functions which can be affected by load
reduction:
 Heated Seat/Vented Seats/Heated Wheel
 Rear Defroster And Heated Mirrors
 HVAC System
 115 Volt AC Power Inverter System
 Audio and Telematics System
Loss of the battery charge may indicate one or more of the
following conditions:
 The charging system cannot deliver enough electrical
power to the vehicle system because the electrical
loads are larger than the capability of the charging
system. The charging system is still functioning
properly. 
Turning on all possible vehicle electrical loads (e.g.
HVAC to max settings, exterior and interior lights, over -
loaded power outlets +12 Volt, 115 Volt AC, USB ports)
during certain driving conditions (city driving, towing,
frequent stopping, etc.).
 Installing options like additional lights, upfitter elec -
trical accessories, audio systems, alarms and similar
devices.
 Unusual driving cycles (short trips separated by long
parking periods).
 The vehicle was parked for an extended period of time
(weeks, months).
 The battery was recently replaced and was not charged
completely.
 The battery was discharged by an electrical load left on
when the vehicle was parked.
 The battery was used for an extended period with the
engine not running to supply radio, lights, chargers,
+12 Volt portable appliances like vacuum cleaners,
game consoles and similar devices.
What to do when an electrical load reduction action
message is present (“Battery Saver On” or “Battery Saver
Mode”)
During a trip:
 Reduce power to unnecessary loads if possible:
 Turn off redundant lights (interior or exterior)
 Check what may be plugged in to power outlets
+12 Volt, 115 Volt AC, USB ports
 Check HVAC settings (blower, temperature)
 Check the audio settings (volume) After a trip:

Check if any aftermarket equipment was installed
(additional lights, upfitter electrical accessories, audio
systems, alarms) and review specifications if any (load
and Ignition Off Draw currents).
 Evaluate the latest driving cycles (distance, driving
time and parking time).
 The vehicle should have service performed if the
message is still present during consecutive trips, and if
the evaluation and driving pattern of the vehicle did not
help to identify the cause.WARNING LIGHTS AND MESSAGES
The warning/indicator lights will illuminate in the
instrument panel together with a dedicated message and/
or acoustic signal when applicable. These indications are
indicative and precautionary and as such must not be
considered as exhaustive and/or alternative to the
information contained in the Owner’s Manual, which you
are advised to read carefully in all cases. Always refer to
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.

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GETTING TO KNOW YOUR INSTRUMENT PANEL109
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 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 either 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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110GETTING TO KNOW YOUR INSTRUMENT PANEL
Drowsy Driver Detected Warning Light —
If Equipped
The Drowsy Driver Detected (DDD) system,
monitors certain vehicle movement and driver
interactions to identify patterns suggesting
drowsiness. If detected, the system sends the
driver an auditory and visual signal to take precaution. A
pop-up will display continuously until the driver presses
the OK button to clear.
Once the pop-up message is cleared, it is stored until the
condition is no longer true
Úpage 240.
Electric Power Steering (EPS) Fault
Warning Light
This warning light will turn on when there's a
fault with the EPS system Úpage 135.
Electronic Throttle Control (ETC) Warning
Light
This warning light will illuminate to indicate a
problem with the ETC system. If a problem is
detected while the vehicle is running, the light
will either stay on or flash depending on the
nature of the problem. Cycle the ignition when the vehicle is safely and
completely stopped and the transmission is placed in the
PARK position. The light should turn off. If the light
remains on with the vehicle running, your vehicle will
usually be drivable; however, see an authorized dealer for
service as soon as possible.
NOTE:This light may turn on if the accelerator and brake pedals
are pressed at the same time.
If the light continues to flash when the vehicle is running,
immediate service is required and you may experience
reduced performance, an elevated/rough idle, or engine
stall and your vehicle may require towing. The light will
come on when the ignition is placed in the ON/RUN
position and remain on briefly as a bulb check. If the light
does not come on during starting, have the system
checked by an authorized dealer.
Engine Coolant Temperature Warning
Light
This warning light warns of an overheated
engine condition. If the engine coolant
temperature is too high, this indicator will
illuminate and a single chime will sound. If the
temperature reaches the upper limit, a continuous chime
will sound for four minutes or until the engine is able to
cool; whichever comes first.
If the light turns on while driving, safely pull over and stop
the vehicle. If the Air Conditioning (A/C) system is on, turn
it off. Also, shift the transmission into NEUTRAL (N) and
idle the vehicle. If the temperature reading does not return
to normal, turn the engine off immediately and call for
service
Úpage 303.
Hood Open Warning Light
This warning light will illuminate when the hood
is left open and not fully closed.
NOTE:If the vehicle is moving, there will also be a single chime.
Liftgate Open Warning Light
This warning light will illuminate when the
liftgate is open.
NOTE:If the vehicle is moving, there will also be a single chime.
Night Vision Animal Detected Warning
Light — If Equipped
The Night Vision Animal Warning Light will
illuminate in red when an animal is detected
directly in the vehicle’s path, near the
headlights, and a collision is possible.
If enabled, a chime will sound and a video pop-up may
display when a detection occurs.WARNING!
Continued operation with reduced assist could pose a
safety risk to yourself and others. Service should be
obtained as soon as possible.

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