2023 JEEP GLADIATOR maintenance

STARTING AND OPERATING181
brakes will release. A cancel message will display
on the instrument cluster display and produce a
warning chime. Driver intervention will be required
at this moment.
While ACC with Stop is holding your vehicle at a
standstill, if the driver seat belt is unbuckled or the
driver door is opened, the ACC with Stop system
will cancel and the brakes will release. A cancel
message will display on the instrument cluster
display and produce a warning chime. Driver
intervention will be required at this moment.
Display Warnings And Maintenance
“WIPE FRONT RADAR SENSOR IN FRONT OF
VEHICLE” WARNING
The “ACC/FCW Unavailable Wipe Front Radar
Sensor” warning will display and a chime will
sound when conditions temporarily limit system
performance. This most often occurs at times of poor visibility,
such as in snow or heavy rain. The ACC system may
also become temporarily blinded due to
obstructions, such as mud, dirt or ice. In these
cases, the instrument cluster display will display
the above message and the system will deactivate.
This message can sometimes be displayed while
driving in highly reflective areas (i.e. ice and snow,
or tunnels with reflective tiles). The ACC system will
recover after the vehicle has left these areas.
Under rare conditions, when the radar is not
tracking any vehicles or objects in its path this
warning may temporarily occur.
NOTE:If the “ACC/FCW Unavailable Wipe Front Radar
Sensor” warning is active, Fixed Speed Cruise
Control is still available.
If weather conditions are not a factor, the driver
should examine the sensor. It may require cleaning
or removal of an obstruction. The sensor is located
in the center of the vehicle behind the lower grille.
To keep the ACC system operating properly, it is
important to note the following maintenance
items:
Always keep the sensor clean. Carefully wipe the
sensor lens with a soft cloth. Be cautious not to
damage the sensor lens.
Do not remove any screws from the sensor.
Doing so could cause an ACC system malfunc
-
tion or failure and require a sensor realignment.
If the sensor or front end of the vehicle is
damaged due to a collision, see an authorized
dealer for service.
Do not attach or install any accessories near the
sensor, including transparent material or after -
market grilles. Doing so could cause an ACC
system failure or malfunction.
When the condition that deactivated the system is
no longer present, the system will return to the
“Adaptive Cruise Control Off” state and will resume
function by simply reactivating it.
NOTE:If the “ACC/FCW Unavailable Wipe Front Radar
Sensor” message occurs frequently (e.g. more
than once on every trip) without any snow, rain,
mud, or other obstruction, have the radar sensor
realigned at an authorized dealer.
WARNING!
When the ACC system is resumed, the driver
must ensure that there are no pedestrians,
vehicles or objects in the path of the vehicle.
Failure to follow these warnings can result in a
collision and death or serious personal injury.
4

23_JT_OM_EN_USC_t.book Page 181

STARTING AND OPERATING193
2. Remove the diesel fuel filler cap by rotating it counterclockwise.

Fuel and Diesel Exhaust Fluid (DEF) Fill Location

3. Fully insert the diesel nozzle into the filler pipe. Fill the vehicle with fuel.
4. When the nozzle “clicks” or shuts off, the fuel tank is full. Wait five seconds before removing
the fuel nozzle to allow excess fuel to drain
from nozzle.
5. Remove the diesel nozzle, reinstall fuel cap and close the fuel filler door.
NOTE:
When the fuel nozzle “clicks” or shuts off, the
fuel tank is full.
Tighten the fuel filler cap about a quarter turn
until you hear one click. This is an indication that
the cap is properly tightened.
If the fuel filler cap is not tightened properly, the
MIL will come on. Be sure the cap is tightened
every time the vehicle is refueled.
AVOID USING CONTAMINATED FUEL
Fuel that is contaminated by water or dirt can
cause severe damage to the engine fuel system.
Proper maintenance of the engine fuel filter and
fuel tank is essential see Ú page 368.
BULK FUEL STORAGE — DIESEL FUEL
If you store quantities of fuel, good maintenance of
the stored fuel is also essential. Fuel contaminated
with water will promote the growth of “microbes.”
These microbes form “slime” that will clog the fuel
filtration system and lines. Drain condensation
from the supply tank and change the line filter on
a regular basis.
NOTE:When a diesel engine is allowed to run out of fuel,
air is pulled into the fuel system.
If the vehicle will not start see Ú page 370.
DIESEL EXHAUST FLUID
Your vehicle is equipped with a Selective Catalytic
Reduction (SCR) system to meet the very stringent
diesel emissions standards required by the
Environmental Protection Agency.
The purpose of the SCR system is to reduce levels
of NOx (oxides of nitrogen emitted from engines)
that are harmful to our health and the environment
to a near-zero level. A small quantity of Diesel
Exhaust Fluid (DEF) is injected into the exhaust
upstream of a catalyst where, when vaporized, it
converts smog-forming nitrogen oxides (NOx) into
harmless nitrogen (N2) and water vapor (H2O), two
natural components of the air we breathe. You can
operate with the comfort that your vehicle is
contributing to a cleaner, healthier world
environment for this and generations to come.
System Overview
This vehicle is equipped with a Diesel Exhaust Fluid
(DEF) injection system and a Selective Catalytic
Reduction (SCR) catalyst to meet the emission
requirements.
1 — Diesel Fuel Filler
2 — DEF Filler
WARNING!
Do not open the high pressure fuel system with
the engine running. Engine operation causes
high fuel pressure. High pressure fuel spray can
cause serious injury or death.
4

23_JT_OM_EN_USC_t.book Page 193

MULTIMEDIA233
Stop use immediately if a problem occurs.
Failure to do so may cause injury or damage to
the product. See an authorized dealer for repair.
Ensure the volume level of the system is set to a
level that still allows you to hear outside traffic
and emergency vehicles.
Safe Usage Of The Uconnect System
The Uconnect system is a sophisticated elec -
tronic device. Do not let young children use the
system.
Permanent hearing loss may occur if you play
your music or sound system at loud volumes.
Exercise caution when setting the volume on the
system.
Keep drinks, rain and other sources of moisture
away from the system. Besides damage to the
system, moisture can cause electric shocks as
with any electronic device.
NOTE:Many features of this system are speed
dependent. For your own safety, it is not possible to
use some of the touchscreen features while the
vehicle is in motion.
Care And Maintenance
Do not press the touchscreen with any hard or
sharp objects (pen, USB stick, jewelry, etc.),
which could scratch the surface.
Do not spray any liquid or chemicals directly on
the screen! Use a clean and dry microfiber lens
cleaning cloth in order to clean the touchscreen.
If necessary, use a lint-free cloth dampened
with a cleaning solution, such as isopropyl
alcohol or an isopropyl alcohol and water solu -
tion ratio of 50:50. Be sure to follow the solvent
manufacturer's precautions and directions
Ú page 432.
UCONNECT MODES
STEERING WHEEL AUDIO CONTROLS
The remote sound system controls are located on
the rear surface of the steering wheel at the three
and nine o’clock positions.

Remote Sound System Controls
The right-hand control is a rocker-type switch with
a push button in the center and controls the
volume and mode of the sound system. Pushing
the top of the rocker switch will increase the
volume, and pushing the bottom of the rocker
switch will decrease the volume.
Pushing the right-hand control’s center button will
make the radio switch between the various modes
available (AM/FM/SXM or Media, etc.).
The left-hand control is a rocker-type switch with a
push button in the center. The function of the
left-hand control is different depending on which
mode you are in.
The following describes the left-hand control
operation in each mode:
Radio Operation
Pushing the top of the switch will seek up for the
next available station and pushing the bottom of
the switch will seek down for the next available
station.
The button located in the center of the left-hand
control will tune to the next preset station that you
have programmed in the radio presets.
Media Mode
Pushing the top of the switch skips to the next
track on the selected media (AUX/USB/
Bluetooth®). Pushing the switch up twice will go
forward two tracks. Pushing the bottom switch
5

23_JT_OM_EN_USC_t.book Page 233

MULTIMEDIA263
(Continued)
Automatic SOS — If Equipped
Automatic SOS is a hands-free safety service that
can immediately connect you with help in the event
that your vehicle’s airbags deploy. After an
accident, a live agent will contact you through the
Uconnect system and alert emergency services.
NOTE:An active SiriusXM Guardian™ subscription is
required for this feature to function.
After a crash where the airbags deploy:

1. Automatic SOS will initiate a call with an agent.

2. An agent will receive the call and confirm the location of the emergency.
3. If needed, the agent will request the assistance of emergency services.
4. First responders will arrive on scene. The agent will remain on the call until emergency
services arrive.
NOTE:
Agents are available 24/7 to assist you in the
case of an emergency.
On your behalf, agents are able to notify family
members about the collision.
Agents can brief first responders of the situation
before they arrive on scene.
WARNING!
Never place anything on or near the vehicle’s
LTE (voice/data) or 4G (data) and GPS
antennas. You could prevent LTE (voice/data)
or 4G (data) and GPS signal reception, which
can prevent your vehicle from placing an
emergency call.
Do not add any aftermarket electrical equip -
ment to the vehicle’s electrical system. This
may prevent your vehicle from sending a
signal to initiate an emergency call. To avoid
interference that can cause the SOS Call
system to fail, never add aftermarket equip -
ment (e.g., two-way mobile radio, CB radio,
data recorder, etc.) to your vehicle’s electrical
system or modify the antennas on your
vehicle. IF YOUR VEHICLE LOSES POWER FOR
ANY REASON (INCLUDING DURING OR AFTER
AN ACCIDENT), NEITHER THE VEHICLE
BRANDED APPS NOR THE SIRIUSXM
GUARDIAN™ CONNECTED SERVICES WILL
OPERATE.
The Occupant Restraint Controller (ORC) turns
on the Air Bag Warning Light on the instru -
ment panel if a malfunction in any part of the
air bag system is detected. If the Air Bag
Warning Light is illuminated, the air bag
system may not be working properly and the
SOS Call system may not be able to send a
signal to the SiriusXM Guardian™ Customer
Care center. If the Air Bag Warning Light is illu -
minated, have an authorized dealer service
your vehicle immediately.
Ignoring the Rearview Mirror Light could mean
you will not have SOS Call services if needed.
If the Rearview Mirror Light is illuminated,
have an authorized dealer service the SOS
Call system immediately.
If anyone in the vehicle could be in danger
(e.g., fire or smoke is visible, dangerous road
conditions or location), do not wait for voice
contact from a SiriusXM Guardian™ Customer
Care agent. All occupants should exit the
vehicle immediately and move to a safe loca -
tion.
Failure to perform scheduled maintenance
and regular inspection of your vehicle may
result in vehicle damage, accident or injury.
WARNING!
5

23_JT_OM_EN_USC_t.book Page 263

MULTIMEDIA269
on your device, select “Help”, and then select
“SiriusXM Guardian™ Customer Care” to make
the call.
3. SiriusXM Guardian™ Customer Care will authenticate that you are the owner of the
vehicle and contact the law enforcement with
whom you filed the stolen vehicle report.
4. SiriusXM Guardian™ Customer Care will work with your local law enforcement to locate the
vehicle. You will be contacted by law
enforcement if your vehicle is recovered. While
the investigation is ongoing, you should also
contact your insurance company to inform it of
the situation.
Requirements
Vehicle must be properly equipped with the
Uconnect system.
Vehicle must have an operable LTE (voice/data)
or 4G (data) network connection compatible
with your device.
Vehicle must be registered with SiriusXM
Guardian™ and have an active subscription that
includes the applicable feature.
NOTE:Not all features of SiriusXM Guardian™ are
available everywhere at all times, particularly in
remote or enclosed areas.
Monthly Vehicle Health Report —
If Equipped
Description
Monthly Vehicle Health Report is a Uconnect
service through which a summary of the
performance of your vehicle’s key systems will be
sent to you every month so you can stay on top of
your vehicle’s maintenance needs. This is provided
as a convenience to you and does not substitute
for regular maintenance to your vehicle.
In order to provide the Monthly Vehicle Health
Report, the Uconnect system in your vehicle may
collect and transmit vehicle data to SiriusXM
Guardian™ and to FCA, such as your vehicle’s
health and performance, your vehicle’s location,
your utilization of the features in your vehicle, and
other data.
This data collection and transmission begins when
you enroll in SiriusXM Guardian™ and will continue
even if you cancel your SiriusXM Guardian™
subscription unless you call SiriusXM Guardian™
Customer Care and tell them to deactivate your
Uconnect Services.
Please see the Uconnect Privacy Policy for more
information, located at www.driveuconnect.com/
connectedservices/privacy.html (US Residents) or
www.driveuconnect.ca (Canadian Residents). For more information on SiriusXM Guardian™
private policy, see https://siriusxmcvs.com/
privacy-policy.NOTE:Your vehicle must be enrolled in an active
subscription with SiriusXM Guardian™ Connected
Services. If you have concerns about the operation,
function or performance of your vehicle, please
take it to an authorized dealer. This report does not
replace regularly scheduled maintenance. Check
the instrument cluster warning lights and cautions
in your vehicle for the most accurate vehicle health
information.
Vehicle Health Alert —If Equipped
Description
Your vehicle will send you an email alert if it senses
a problem with one of your vehicle’s key systems.
For further information, go to your Owner’s
website.
NOTE:Vehicle Health Alert emails require you to register
and activate services. During this process you will
be asked to provide an email address to which the
reports will be sent.
5

23_JT_OM_EN_USC_t.book Page 269

SAFETY281
power to lessen the chance that wheel lift will
occur. ERM can only reduce the chance of wheel
lift occurring during severe or evasive driving
maneuvers; it cannot prevent wheel lift due to
other factors, such as road conditions, leaving the
roadway, striking objects or other vehicles.
NOTE:ERM is disabled any time the ESC is in “Full Off”
mode (if equipped). See Ú page 281 for a
complete explanation of the available ESC modes.
Electronic Stability Control (ESC)
The ESC system enhances directional control and
stability of the vehicle under various driving
conditions. ESC corrects for oversteering or
understeering of the vehicle by applying the brake of the appropriate wheel(s) to counteract the
above conditions. Engine power may also be
reduced to help the vehicle maintain the desired
path.
Oversteer — when the vehicle is turning more
than appropriate for the steering wheel position.
Understeer — when the vehicle is turning less
than appropriate for the steering wheel position.
ESC uses sensors in the vehicle to determine the
vehicle path intended by the driver and compares
it to the actual path of the vehicle. When the actual
path does not match the intended path, ESC
applies the brake of the appropriate wheel to
assist in counteracting the oversteer or understeer
condition.
The ESC Activation/Malfunction Indicator Light
located in the instrument cluster will start to flash
as soon as the ESC system becomes active. The
ESC Activation/Malfunction Indicator Light also
flashes when the Traction Control System (TCS) is
active. If the ESC Activation/Malfunction Indicator
Light begins to flash during acceleration, ease up
on the accelerator and apply as little throttle as
possible. Be sure to adapt your speed and driving
to the prevailing road conditions.
WARNING!
Many factors, such as vehicle loading, road
conditions and driving conditions, influence the
chance that wheel lift or rollover may occur. ERM
cannot prevent all wheel lift or rollovers,
especially those that involve leaving the roadway
or striking objects or other vehicles. The
capabilities of an ERM-equipped vehicle must
never be exploited in a reckless or dangerous
manner which could jeopardize the user's safety
or the safety of others.
WARNING!

Electronic Stability Control (ESC) cannot
prevent the natural laws of physics from acting
on the vehicle, nor can it increase the traction
afforded by prevailing road conditions. ESC
cannot prevent accidents, including those
resulting from excessive speed in turns, driving
on very slippery surfaces, or hydroplaning. ESC
also cannot prevent accidents resulting from
loss of vehicle control due to inappropriate
driver input for the conditions. Only a safe,
attentive, and skillful driver can prevent acci -
dents. The capabilities of an ESC equipped
vehicle must never be exploited in a reckless or
dangerous manner which could jeopardize the
user’s safety or the safety of others.

Vehicle modifications, or failure to properly
maintain your vehicle, may change the handling
characteristics of your vehicle, and may nega -
tively affect the performance of the ESC system.
Changes to the steering system, suspension,
braking system, tire type and size or wheel size
may adversely affect ESC performance. Improp -
erly inflated and unevenly worn tires may also
degrade ESC performance. Any vehicle modifi-
cation or poor vehicle maintenance that
reduces the effectiveness of the ESC system
can increase the risk of loss of vehicle control,
vehicle rollover, personal injury and death.

6

23_JT_OM_EN_USC_t.book Page 281

SAFETY295
(Continued)
TPMS Warning Light. Driving the vehicle may cause
the tire pressure to rise to approximately 28 psi
(193 kPa), but the TPMS Warning Light will still be
on. In this situation, the TPMS Warning Light will
turn off only after the tires are inflated to the
vehicle’s recommended cold placard pressure
value.
NOTE:When filling warm tires, the tire pressure may need
to be increased up to an additional 4 psi (28 kPa)
above the recommended cold placard pressure in
order to turn the TPMS Warning Light off.
NOTE:
The TPMS is not intended to replace normal tire
care and maintenance, or to provide warning of
a tire failure or condition.
The TPMS should not be used as a tire pressure
gauge while adjusting your tire pressure, unless
your vehicle is equipped with a Tire Fill Alert
(TFA) system.
Driving on a significantly underinflated tire
causes the tire to overheat and can lead to tire
failure. Underinflation also reduces fuel effi
-
ciency and tire tread life, and may affect the
vehicle’s handling and stopping ability.
The TPMS is not a substitute for proper tire
maintenance, and it is the driver’s responsibility
to maintain correct tire pressure using an accu -
rate tire pressure gauge, even if underinflation
has not reached the level to trigger illumination
of the TPMS Warning Light.
Seasonal temperature changes will affect tire
pressure, and the TPMS will monitor the actual
tire pressure in the tire Ú page 432.
System Operation
The Tire Pressure Monitoring System (TPMS) uses
wireless technology with wheel rim mounted
electronic sensors to monitor tire pressure levels.
Sensors, mounted to each wheel as part of the
valve stem, transmit tire pressure readings to the
receiver module.

Tire Pressure Monitoring System Display

CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures
and warning have been established for the tire
size equipped on your vehicle. Undesirable
system operation or sensor damage may
result when using replacement equipment
that is not of the same size, type, and/or style.
The TPMS sensor is not designed for use on
aftermarket wheels, and may contribute to a
poor overall system performance. Customers
are encouraged to use Original Equipment
Manufacturer (OEM) wheels to ensure TPMS
feature operation.
Using aftermarket tire sealants may cause the
Tire Pressure Monitoring System (TPMS)
sensor to become inoperable. After using an
aftermarket tire sealant it is recommended
that you take your vehicle to an authorized
dealer to have your sensor function checked.
After inspecting or adjusting the tire pressure
always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the
valve stem, which could damage the TPMS
sensor.
CAUTION!
6

23_JT_OM_EN_USC_t.book Page 295

306SAFETY
Stow Clips Behind Rear Seat
Your vehicle is equipped with a stow clip on the
lower trim next to each of the rear seats. This clip
is used to hold the seat belt out of the path of the
seatback when it is being folded and opened. Only
place the seat belt webbing in this clip while folding
and opening the seat. Do not leave the webbing
behind the clip when using the belt to restrain an
occupant.

Rear Stow Clip

SUPPLEMENTAL RESTRAINT SYSTEMS
(SRS)
Some of the safety features described in this
section may be standard equipment on some
models, or may be optional equipment on others. If
you are not sure, ask an authorized dealer.
The air bag system must be ready to protect you in
a collision. The Occupant Restraint Controller
(ORC) monitors the internal circuits and
interconnecting wiring associated with the
electrical Air Bag System Components. Your
vehicle may be equipped with the following Air Bag
System Components:
Air Bag System Components
Occupant Restraint Controller (ORC)
Air Bag Warning Light
Steering Wheel and Column
Instrument Panel
Knee Impact Bolsters
Driver and Front Passenger Air Bags
Seat Belt Buckle Switch
Supplemental Side Air Bags
Front and Side Impact Sensors
Seat Belt Pretensioners
Seat Track Position Sensors
Occupant Classification System
Air Bag Warning Light
The Occupant Restraint Controller (ORC)
monitors the readiness of the electronic
parts of the air bag system whenever the
ignition switch is in the START or ON/RUN
position. If the ignition switch is in the OFF position
or in the ACC position, the air bag system is not on
and the air bags will not inflate.
The ORC contains a backup power supply system
that may deploy the air bag system even if the
battery loses power or it becomes disconnected
prior to deployment.
The ORC turns on the Air Bag Warning Light in the
instrument panel for approximately four to eight
seconds for a self-check when the ignition switch is
first in the ON/RUN position. After the self-check,
the Air Bag Warning Light will turn off. If the ORC
detects a malfunction in any part of the system, it
turns on the Air Bag Warning Light, either
momentarily or continuously. A single chime will
sound to alert you if the light comes on again after
initial startup.
The ORC also includes diagnostics that will
illuminate the instrument panel Air Bag Warning
Light if a malfunction is detected that could affect
the air bag system. The diagnostics also record the
nature of the malfunction. While the air bag system
is designed to be maintenance free, if any of the
following occurs, have an authorized dealer
service the air bag system immediately.
WARNING!
Do not place the seat belt webbing behind the
rear seat stow clip when using the seat belt to
restrain an occupant. The seat belt will not be
positioned properly on the occupant and they
could be more seriously injured in an accident
as a result.

23_JT_OM_EN_USC_t.book Page 306