engine JEEP GLADIATOR 2023 Manual PDF

STARTING AND OPERATING175
To Accelerate For Passing
While the Cruise Control is set, press the
accelerator to pass as you would normally. When
the pedal is released, the vehicle will return to the
set speed.
USING CRUISE CONTROL ON HILLS
The transmission may downshift on hills to
maintain the vehicle set speed.
The Cruise Control system maintains speed up and
down hills. A slight speed change on moderate hills
is normal. On steep hills, a greater speed loss or
gain may occur so it may be preferable to drive
without Cruise Control.
To Resume Speed
To resume a previously set speed, push the RES
button and release. Resume can be used at any
speed above 20 mph (32 km/h).
To Deactivate
A soft tap on the brake pedal, pushing the CANC
(cancel) button, or normal brake pressure while
slowing the vehicle will deactivate the Cruise
Control without erasing the set speed from
memory.
The following conditions will also deactivate the
Cruise Control without erasing the set speed from
memory:
Vehicle parking brake is applied
Stability event occurs
Gear selector is moved out of DRIVE
Engine overspeed occurs
Clutch pedal is pressed (manual transmission
only)
Vehicle is operating at a low RPM (manual trans -
mission only)
Pushing the on/off button or placing the ignition in
the OFF position, erases the set speed from
memory.
ADAPTIVE CRUISE CONTROL (ACC)
Adaptive Cruise Control (ACC) increases the driving
convenience provided by Cruise Control while
traveling on highways and major roadways.
However, it is not a safety system and not designed
to prevent collisions. The Cruise Control function
performs differently if your vehicle is not equipped
with ACC Ú page 173.
ACC will allow you to keep Cruise Control engaged
in light to moderate traffic conditions without the
constant need to reset your speed. ACC utilizes a
radar sensor and a forward-facing camera
designed to detect a vehicle directly ahead of you
to maintain a set speed.
NOTE:
If the ACC sensor detects a vehicle ahead, ACC
will apply limited braking or accelerate (not to
exceed the original set speed) automatically to
maintain a preset following distance, while
matching the speed of the vehicle ahead.
Any chassis/suspension or tire size modifica -
tions to the vehicle will affect the performance
of the Adaptive Cruise Control and Forward Colli -
sion Warning system.
Fixed Speed Cruise Control (ACC not enabled)
will not detect vehicles directly ahead of you.
Always be aware of the feature selected
Ú page 432.
WARNING!
Cruise Control can be dangerous where the
system cannot maintain a constant speed. Your
vehicle could go too fast for the conditions, and
you could lose control and have an accident. Do
not use Cruise Control in heavy traffic or on
roads that are winding, icy, snow-covered or
slippery.
4

23_JT_OM_EN_USC_t.book Page 175

STARTING AND OPERATING179
Resume can be used at any speed above 20 mph
(32 km/h) when only Fixed Speed Cruise Control is
being used.
Resume can be used at any speed above 0 mph
(0 km/h) when ACC is active.
NOTE:
While in ACC mode when the vehicle comes to a
complete stop longer than two seconds, the
system will cancel. The driver will have to apply
the brakes to keep the vehicle at a standstill.
ACC cannot be resumed if there is a stationary
vehicle in front of your vehicle in close proximity.
To Vary The Speed Setting
To Increase Or Decrease The Set Speed
After setting a speed, you can increase the set
speed by pushing the SET (+) button, or decrease
speed by pushing the SET (-) button.
U.S. Speed (mph)
Pushing the SET (+) , or SET (-) button once will
result in a 1 mph speed adjustment. Each
subsequent tap of the button results in an
adjustment of 1 mph.
If the button is continually pushed, the set
speed will continue to adjust in 5 mph incre -
ments until the button is released. The new set
speed is reflected in the instrument cluster
display.
Metric Speed (km/h)
Pushing the SET (+) , or SET (-) button once will
result in a 1 km/h speed adjustment. Each
subsequent tap of the button results in an
adjustment of 1 km/h.
If the button is continually pushed, the set
speed will continue to adjust in 10 km/h incre -
ments until the button is released. The new set
speed is reflected in the instrument cluster
display.
NOTE:When you override and push the SET (+) or SET (-)
button, the new set speed will be the current speed
of the vehicle.
When ACC Is Active
When you use the SET (-) button to decelerate, if
the engine’s braking power does not slow the
vehicle sufficiently to reach the set speed, the
brake system will automatically slow the
vehicle.
The ACC system applies the brake down to a full
stop when following a vehicle in front. If your
vehicle follows a vehicle ahead to a standstill,
your vehicle brakes will release two seconds
after coming to a full stop.
The ACC system maintains set speed when
driving uphill and downhill. However, a slight
speed change on moderate hills is normal. In
addition, downshifting may occur while climbing
uphill or descending downhill. This is normal
operation and necessary to maintain set speed.
When driving uphill and downhill, the ACC
system will cancel if the braking temperature
exceeds normal range (overheated).
WARNING!
The Resume function should only be used if
traffic and road conditions permit. Resuming a
set speed that is too high or too low for
prevailing traffic and road conditions could
cause the vehicle to accelerate or decelerate too
sharply for safe operation. 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 179

STARTING AND OPERATING191
The TrailCam view can also be activated by
pressing the icon on the Back Up Camera view.
The Back Up Camera view can also be activated by
pressing the icon on the TrailCam view.
When the vehicle is shifted out of REVERSE with
Camera Delay turned off and TrailCam view is
active, the TrailCam mode is exited and the
previous screen appears again.
When the vehicle is shifted out of REVERSE with
Camera Delay turned on and the TrailCam view is
active, the TrailCam image will be displayed for up
to 10 seconds unless the vehicle speed exceeds
8 mph (13 km/h), the transmission is shifted into
PARK, the ignition is placed in the OFF position, or
the touchscreen X button to disable display of the
TrailCam view is pressed.
Whenever the TrailCam image is activated through
the Manual Activation Methods, and the vehicle
speed is greater than or equal to 8 mph (13 km/h),
a display timer for the image is initiated. The image
will continue to be displayed until the display timer
exceeds 10 seconds.
NOTE:
If the vehicle speed remains below 8 mph
(13 km/h) while in 2WD or 4WD High, the
TrailCam image will be displayed continuously
until deactivated via the touchscreen X button,
the transmission is shifted into PARK, or the
ignition is placed in the OFF position.
The touchscreen X button to disable the display
of the camera image is made available ONLY
when the vehicle is not in REVERSE.
The TrailCam view will stay active regardless of
the vehicle speed and time while in 4WD Low.
Cleaning The TrailCam
Press and hold the Clean Camera button located
on the TrailCam view to wash the TrailCam. Washer
fluid will stop when the button is released.
The camera can be washed up to 20 seconds at
a time while holding the button.
The Clean Camera system is not available when
windshield washing is in process.
When enabled, active dynamic Tire Lines are
projected on the ground plane of the TrailCam view
based on the steering wheel position.
REFUELING THE VEHICLE — GASOLINE
ENGINE (IF EQUIPPED)
FUEL FILLER CAP
The fuel filler cap is located on the left side of the
vehicle. To access the fuel filler cap, push on the
fuel filler door to unlatch it. To close the fuel filler
door, push on it a second time. If the fuel filler cap
is lost or damaged, be sure the replacement cap is
the correct one for this vehicle.
1. Open the fuel filler door.

Fuel Filler Door

2. Remove the fuel cap by rotating it counter -
clockwise.

Fuel Filler Cap

4

23_JT_OM_EN_USC_t.book Page 191

192STARTING AND OPERATING
3. Fully insert the gasoline nozzle into the filler pipe. Fill the vehicle with fuel.
4. When the fuel 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 gasoline 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.
LOOSE FUEL FILLER CAP MESSAGE
After fuel has been added, the vehicle diagnostic
system can determine if the fuel filler cap is
possibly loose, improperly installed, or damaged. If
the system detects a malfunction, the “gASCAP”
message will display in the odometer display.
Tighten the gas cap until a "clicking" sound is heard. This is an indication that the gas cap is
properly tightened. Push the odometer reset
button to turn the message off. If the problem
persists, the message will appear the next time the
vehicle is started. This might indicate a damaged
cap. If the problem is detected twice in a row, the
system will turn on the MIL. Resolving the problem
will turn the MIL off.
REFUELING THE VEHICLE — DIESEL ENGINE
(IF EQUIPPED)
The fuel filler cap is located on the driver's side of
the vehicle. If the fuel filler cap is lost or damaged,
be sure the replacement cap is the correct one for
this vehicle.

1. Open the fuel filler door.

Fuel Filler Door

WARNING!
Never have any smoking materials lit in or
near the vehicle when the fuel door is open or
the tank is being filled.
Never add fuel when the engine is running.
This is in violation of most state and federal
fire regulations and may cause the Malfunc -
tion Indicator Light (MIL) to turn on.
A fire may result if fuel is pumped into a
portable container that is inside of a vehicle.
You could be burned. Always place fuel
containers on the ground while filling.
CAUTION!
Damage to the fuel system or emission control
system could result from using an improper
fuel filler cap. A poorly fitting cap could let
impurities into the fuel system. Also, a poorly
fitting aftermarket cap can cause the Malfunc -
tion Indicator Light (MIL) to illuminate, due to
fuel vapors escaping from the system.
To avoid fuel spillage and overfilling, do not
“top off” the fuel tank after filling.

23_JT_OM_EN_USC_t.book Page 192

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

194STARTING AND OPERATING
The DEF injection system consists of the following
components:
DEF tank
DEF pump
DEF injector
Electronically-heated DEF Lines
NOx sensors
Temperature sensors
SCR catalyst
The DEF injection system and SCR catalyst enable
the achievement of diesel emissions
requirements; while maintaining outstanding fuel
economy, drivability, torque and power ratings.
For system messages and warnings see
Ú page 121.
NOTE:
Your vehicle is equipped with a DEF injection
system. You may occasionally hear an audible
clicking noise from under the vehicle at a stop.
This is normal operation.
The DEF pump will run for a period of time after
engine shutdown to purge the DEF system. This
is normal operation and may be audible from
the rear of the vehicle.
Diesel Exhaust Fluid Storage
Diesel Exhaust Fluid (DEF) is considered a very
stable product with a long shelf life. If DEF is kept
in temperatures between 10° and 90°F (-12° and
32°C), it will last a minimum of one year.
DEF is subject to freezing at the lowest
temperatures. For example, DEF may freeze at
temperatures at or below 12°F (-11°C). The
system has been designed to operate in this
environment.
NOTE:When working with DEF, it is important to know
that:
Any containers or parts that come into contact
with DEF must be DEF compatible (plastic or
stainless steel). Copper, brass, aluminum, iron
or non-stainless steel should be avoided as they
are subject to corrosion by DEF.
If DEF is spilled, it should be wiped up
completely.
Adding Diesel Exhaust Fluid
The DEF gauge (located on the instrument cluster
display) will display the level of DEF remaining in
the tank Ú page 121.
NOTE:Driving conditions (altitude, vehicle speed, load,
etc.) will affect the amount of DEF that is used in
your vehicle.
DEF FILL PROCEDURE
NOTE:
For the correct DEF fluid type see Ú page 424.

1. Remove cap from DEF fill inlet (located in fuel door).

Fuel and Diesel Exhaust Fluid Fill Location

2. Insert DEF fill adapter/nozzle into DEF fill inlet.
NOTE:
The DEF gauge may take up to five seconds
to update after adding a gallon or more of
Diesel Exhaust Fluid (DEF) to the DEF tank.
If you have a fault related to the DEF
system, the gauge may not update to the
new level. See an authorized dealer for
service.
1 — Diesel Fuel Filler
2 — Diesel Exhaust Fluid Filler

23_JT_OM_EN_USC_t.book Page 194

STARTING AND OPERATING195
(Continued)
The DEF gauge may also not immediately
update after a refill if the temperature of the
DEF fluid is below 12°F (-11°C). The DEF
line heater will possibly warm up the DEF
fluid and allow the gauge to update after a
period of run time. Under very cold condi -
tions, it is possible that the gauge may not
reflect the new fill level for several drives.
Excessive overfilling of the DEF tank can
result in a MIL lamp/fault code and inaccu-
rate level readings.
Refilling With Nozzles
You can fill up at any DEF distributor.
Proceed as follows:
Insert the DEF nozzle in the filler, start
refilling and stop refilling at the first shut-off
(the shut-off indicates that the DEF tank is
full). Do not proceed with the refilling, to
prevent spillage of DEF.
Extract the nozzle.
Refilling With Containers
Proceed as follows:
Check the expiration date.
Read the advice for use on the label before
pouring the content of the bottle into the
DEF tank.
If systems which cannot be screwed in
(e.g. tanks) are used for refilling, after the
indication appears on the instrument panel
display Úpage 121 fill the DEF tank with no
more than 2 gal (8 L).
If containers which can be screwed to the
filler are used, the reservoir is full when the
DEF level in the container stops pouring out.
Do not proceed further.
3. Stop filling the DEF tank immediately when any of the following happen: DEF stops flowing
from the fill bottle into the DEF fill inlet, DEF
splashes out the fill inlet, or a DEF pump
nozzle automatically shuts off.
4. Reinstall cap onto DEF fill inlet.
VEHICLE LOADING
CERTIFICATION LABEL
As required by National Highway Traffic Safety
Administration regulations, your vehicle has a
certification label affixed to the driver's side door or
pillar.
CAUTION!
To avoid DEF spillage, and possible damage to
the DEF tank from overfilling, do not “top off”
the DEF tank after filling.
DO NOT OVERFILL. DEF will freeze below 12ºF
(-11ºC). The DEF system is designed to work in
temperatures below the DEF freezing point,
however, if the tank is overfilled and freezes,
the system could be damaged.
When DEF is spilled, clean the area immedi -
ately with water and use an absorbent mate -
rial to soak up the spills on the ground.
Do not attempt to start your engine if DEF is
accidentally added to the diesel fuel tank as it
can result in severe damage to your engine,
including but not limited to failure of the fuel
pump and injectors.
Never add anything other than DEF to the tank
– especially any form of hydrocarbon such as
diesel fuel, fuel system additives, gasoline, or
any other petroleum-based product. Even a
very small amount of these, less than
100 parts per million or less than 1 oz. per
78 gal (295 L) will contaminate the entire DEF
system and will require replacement. If
owners use a container, funnel or nozzle when
refilling the tank, it should either be new or
one that is has only been used for adding DEF.
Mopar® provides an attachable nozzle with its
DEF for this purpose.
CAUTION!
4

23_JT_OM_EN_USC_t.book Page 195

202STARTING AND OPERATING
(Continued)
TRAILER AND TONGUE WEIGHT
Never exceed the maximum tongue weight
stamped on your bumper or trailer hitch.
Weight Distribution

Consider the following items when computing the
weight on the rear axle of the vehicle:
The tongue weight of the trailer
The weight of any other type of cargo or equip -
ment put in or on your vehicle
The weight of the driver and all passengers
NOTE:Remember that everything put into or on the trailer
adds to the load on your vehicle. Also, additional
factory-installed options or dealer-installed options
must be considered as part of the total load on
your vehicle. Refer to the Tire And Loading Infor -
mation Placard for the maximum combined weight
of occupants and cargo for your vehicle.
TOWING REQUIREMENTS
To promote proper break-in of your new vehicle
drivetrain components, the following guidelines
are recommended:
WARNING!
Improper towing can lead to a collision. Follow
these guidelines to make your trailer towing as
safe as possible:
Make certain that the load is secured in the
trailer and that it will not shift during travel.
When trailering cargo that is not fully secured,
dynamic load shifts can occur that may be
difficult for the driver to control. You could lose
control of your vehicle and have a collision.
When hauling cargo, or towing a trailer, do not
overload your vehicle or trailer. Overloading
can cause a loss of control, poor performance,
or damage to brakes, axle, engine, transmis -
sion, steering, suspension, chassis structure,
or tires.
Safety chains must always be used between
your vehicle and trailer. Always connect the
chains to the frame or hook retainers of the
vehicle hitch. Cross the chains under the
trailer tongue and allow enough slack for
turning corners.
Vehicles with trailers should not be parked on
a grade. When parking, apply the parking
brake on the tow vehicle. Put the tow vehicle
transmission in PARK. Always block or "chock"
the trailer wheels.
GCWR must not be exceeded.
Total weight must be distributed between the
tow vehicle and the trailer such that the
following four ratings are not exceeded:
GVWR
GTW
GAWR
Tongue weight rating for the trailer hitch
utilized
CAUTION!

Do not tow a trailer at all during the first
500 miles (805 km) the new vehicle is driven.
The engine, axle or other parts could be
damaged.
Then, during the first 500 miles (805 km) that a
trailer is towed, do not drive over 50 mph
(80 km/h) and do not make starts at full
throttle. This helps the engine and other parts
of the vehicle wear in at the heavier loads.

WARNING!

23_JT_OM_EN_USC_t.book Page 202

204STARTING AND OPERATING

Four-Pin Connector
Seven-Pin Connector

TOWING TIPS
Before towing, practice turning, stopping and
backing the trailer in an area away from heavy
traffic.
If using a manual transmission vehicle for trailer
towing, all starts must be in first gear to avoid
excessive clutch slippage.
Automatic Transmission — If Equipped
Select the DRIVE range when towing. The
transmission controls include a drive strategy to
avoid frequent shifting when towing. However, if
frequent shifting does occur while in DRIVE, you
can use the AutoStick shift control to manually
select a lower gear.
NOTE:Using a lower gear while operating the vehicle
under heavy loading conditions, will improve
performance and extend transmission life by
reducing excessive shifting and heat build-up. This
action will also provide better engine braking.
AutoStick — If Equipped
When using the AutoStick shift control, select
the highest gear that allows for adequate perfor -
mance and avoids frequent downshifts. For
example, choose “5” if the desired speed can be
maintained. Choose “4” or “3” if needed to
maintain the desired speed.
To prevent excess heat generation, avoid
continuous driving at high RPM. Return to a
higher gear or vehicle speed when grade and
road conditions allow.
Cruise Control — If Equipped
Do not use in hilly terrain or with heavy loads.
When using the Cruise Control, if you experience
speed drops greater than 10 mph (16 km/h),
disengage until you can get back to cruising
speed.
Use Cruise Control in flat terrain and with light
loads to maximize fuel efficiency.
1 — Ground
2 — Park
3 — Left Stop/Turn
4 — Right Stop/Turn
1 — Backup Lamps
2 — Running Lamps
3 — Left Stop/Turn
4 — Ground
5 — Battery
6 — Right Stop/Turn
7 — Electric Brakes

23_JT_OM_EN_USC_t.book Page 204

206STARTING AND OPERATING
Shifting Into N (Neutral)
Use the following procedure to prepare your
vehicle for recreational towing.

1. Bring the vehicle to a complete stop on level
ground.

2. Press and hold the brake pedal.
3. Shift the automatic transmission into NEUTRAL or press the clutch pedal on a
manual transmission. 4. Turn the engine off.
5. Shift the transfer case lever into N (Neutral).
6. Start the engine.
7. Shift the transmission into DRIVE or REVERSE.
8. Release the brake pedal (and clutch pedal on
manual transmissions) for five seconds and
ensure that there is no vehicle movement.
9. Repeat steps 7 and 8 with automatic transmission in DRIVE or manual transmission
in first gear.
10. Turn the engine off.
11. Firmly apply the parking brake.
12. Shift the transmission into PARK or place manual transmission in gear (NOT in
NEUTRAL).
13. Attach the vehicle to the tow vehicle using a suitable tow bar.
14. Release the parking brake.Automatic transmissions must be placed in
PARK for recreational towing.
Manual transmissions must be placed in gear
(not in Neutral) for recreational towing.
Before recreational towing, perform the proce -
dure outlined under “Shifting Into N (Neutral)”
to be certain that the transfer case is fully in N
(Neutral). Otherwise, internal damage will
result.
Towing this vehicle in violation of the above
requirements can cause severe transmission
and/or transfer case damage. Damage from
improper towing is not covered under the New
Vehicle Limited Warranty.
Do not use a bumper-mounted clamp-on tow
bar on your vehicle. The bumper face bar will
be damaged.
CAUTION!
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.
CAUTION!
It is necessary to follow these steps to be certain
that the transfer case is fully in N (Neutral)
before recreational towing to prevent damage to
internal parts.CAUTION!
Damage to the transmission may occur if the
transmission is shifted into PARK with the
transfer case in N (Neutral) and the engine
running. With the transfer case in N (Neutral)
ensure that the engine is OFF before shifting the
transmission into PARK.

23_JT_OM_EN_USC_t.book Page 206