warning JEEP WRANGLER 2023 Repair Manual

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.

23_JL_OM_EN_USC_t.book Page 120

GETTING TO KNOW YOUR INSTRUMENT PANEL121
Service Forward Collision Warning (FCW)
Light — If Equipped
This warning light will illuminate to indicate a
fault in the Forward Collision Warning System.
Contact an authorized dealer for service
Úpage 255.
Service Stop/Start System Warning Light —
If Equipped
This warning light will illuminate when the
Stop/Start system is not functioning properly
and service is required. Contact an authorized
dealer for service.
Cruise Control Fault Warning Light
This warning light will illuminate to indicate the
Cruise Control system is not functioning
properly and service is required. Contact an
authorized dealer.
Sway Bar Fault Warning Light
This light will illuminate when there is a fault in
the sway bar disconnect system Úpage 145.
Tire Pressure Monitoring System (TPMS)
Warning Light
The warning light switches on and a message is
displayed to indicate that the tire pressure is
lower than the recommended value and/or
that slow pressure loss is occurring. In these
cases, optimal tire duration and fuel consumption may not
be guaranteed. Should one or more tires be in the condition previously
mentioned, the display will show the indications
corresponding to each tire.
Each tire, including the spare (if provided), should be
checked monthly when cold and inflated to the inflation
pressure recommended by the vehicle manufacturer on
the vehicle placard or tire inflation pressure label. If your
vehicle has tires of a different size than the size indicated
on the vehicle placard or tire inflation pressure label, you
should determine the proper tire inflation pressure for
those tires.
As an added safety feature, your vehicle has been
equipped with a TPMS that illuminates a low tire pressure
telltale when one or more of your tires is significantly
underinflated. Accordingly, when the low tire pressure
telltale illuminates, you should stop and check your tires
as soon as possible, and inflate them to the proper
pressure. Driving on a significantly under inflated tire
causes the tire to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency and tire tread
life, and may affect the vehicle’s handling and stopping
ability.
Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS
low tire pressure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system is not
operating properly. The TPMS malfunction indicator is
combined with the low tire pressure telltale. When the
system detects a malfunction, the telltale will flash for
approximately one minute and then remain continuously
illuminated. This sequence will continue upon subsequent
vehicle start-ups as long as the malfunction exists. When
the malfunction indicator is illuminated, the system may
not be able to detect or signal low tire pressure as
intended. TPMS malfunctions may occur for a variety of
reasons, including the installation of replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the TPMS
malfunction telltale after replacing one or more tires or
wheels on your vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to continue to
function properly.
CAUTION!

Do not continue driving with one or more flat tires as
handling may be compromised. Stop the vehicle, avoid
-
ing sharp braking and steering. If a tire puncture occurs,
repair immediately using the dedicated tire repair kit and
contact an authorized dealer as soon as possible.

CAUTION!
The TPMS has been optimized for the original equip -
ment 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. After -
market wheels can cause sensor damage. Using after -
market tire sealants may cause the Tire Pressure
Monitoring System (TPMS) sensor to become inopera -
ble. After using an aftermarket tire sealant it is recom -
mended that you take your vehicle to an authorized
dealer to have your sensor function checked.
3

23_JL_OM_EN_USC_t.book Page 121

122GETTING TO KNOW YOUR INSTRUMENT PANEL
YELLOW INDICATOR LIGHTS
4WD Indicator Light — If Equipped
This light alerts the driver that the vehicle is in
the Four-Wheel Drive (4WD) mode, and the
front and rear driveshafts are mechanically
locked together forcing the front and rear
wheels to rotate at the same speed.
4WD Low Indicator Light — If Equipped
This light alerts the driver that the vehicle is in
the 4WD Low mode. The front and rear
driveshafts are mechanically locked together
forcing the front and rear wheels to rotate at
the same speed. Low range provides a greater gear
reduction ratio to provide increased torque at the wheels
Úpage 140.
4WD Part Time Indicator Light —
If Equipped
This light alerts the driver that the vehicle is in
the Four-Wheel Drive part time mode, and the
front and rear driveshafts are mechanically
locked together forcing the front and rear
wheels to rotate at the same speed.
Axle Locker Fault Indicator Light
This light indicates when the front and/or rear
axle locker fault has been detected.
Forward Collision Warning (FCW) OFF
Indicator Light — If Equipped
This indicator light illuminates to indicate that
Forward Collision Warning is off Úpage 255.
Front And Rear Axle Lock Indicator Light
This light indicates when the front, rear, or both
axles have been locked. The telltale will display
the lock icon on the front and rear axles to
indicate the current lock status.
Neutral Indicator Light — If Equipped
This light alerts the driver that the vehicle is in
the Neutral mode.
Rear Axle Lock Indicator Light
This light indicates when the rear axle lock has
been activated Úpage 140.
Sway Bar Indicator Light — If Equipped
This indicator light will illuminate when the
front sway bar is disconnected Úpage 145.
Wait To Start Indicator Light — If Equipped
This indicator light will illuminate for
approximately two seconds when the ignition is
turned to the ON/RUN position. Its duration
may be longer based on colder operating
conditions. Vehicle will not initiate start until telltale is no
longer displayed
Úpage 126.
NOTE:The Wait To Start Indicator Light may not illuminate if the
intake manifold temperature is warm enough.
Low Diesel Emissions Additive AdBlue®
(UREA) Indicator Light — If Equipped
The Low Diesel Exhaust Emissions Additive
AdBlue® (UREA) indicator light illuminates
when the AdBlue® (UREA) level is low.
Fill the AdBlue® (UREA) tank as soon as possible with at
least 1.3 gallons (5 liters) of AdBlue® (UREA).
If filling the tank is done with a remaining range of
AdBlue® (UREA) in the tank equal to zero, you may need
to wait two minutes before starting the vehicle.
Water In Fuel Indicator Light — If Equipped
The Water In Fuel Indicator Light will illuminate
when there is water detected in the fuel filter. If
this light remains on, DO NOT start the vehicle
before you drain the water from the fuel filter to
prevent engine damage, and please see an authorized
dealer.

23_JL_OM_EN_USC_t.book Page 122

GETTING TO KNOW YOUR INSTRUMENT PANEL125
ONBOARD DIAGNOSTIC SYSTEM
(OBD II) C
YBERSECURITY
Your vehicle is required to have OBD II and a connection
port to allow access to information related to the
performance of your emissions controls. Authorized
service technicians may need to access this information to
assist with the diagnosis and service of your vehicle and
emissions system
Úpage 184.
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS
In some localities, it may be a legal requirement to pass an
inspection of your vehicle's emissions control system.
Failure to pass could prevent vehicle registration.
For states that require an Inspection and
Maintenance (I/M), this check verifies the
Malfunction Indicator Light (MIL) is functioning
and is not on when the engine is running, and
that the OBD II system is ready for testing.
The OBD II system may not be ready if your vehicle was
recently serviced, recently had a depleted battery or a
battery replacement. If the OBD II system should be
determined not ready for the I/M test, your vehicle may fail
the test.
Your vehicle has a simple ignition actuated test, which you
can use prior to going to the test station. To check if your
vehicle's OBD II system is ready, you must do the following:

1. Cycle the ignition switch to the ON position, but do not crank or start the engine.

NOTE:If you crank or start the engine, you will have to start this
test over.
2. As soon as you cycle the ignition switch to the ON position, you will see the Malfunction Indicator Light
(MIL) symbol come on as part of a normal bulb check. 3. Approximately 15 seconds later, one of two things will
happen:
 The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn OFF
the ignition or start the engine. This means that
your vehicle's OBD II system is not ready and you
should not proceed to the I/M station.
 The MIL will not flash at all and will remain fully illu -
minated until you place the ignition in the off posi -
tion or start the engine. This means that your
vehicle's OBD II system is ready and you can
proceed to the I/M station.
If your OBD II system is not ready, you should see an
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your vehicle
as you normally would in order for your OBD II system to
update. A recheck with the previously mentioned test
routine may then indicate that the system is now ready.
Regardless of whether your vehicle's OBD II system is
ready or not, if the MIL is illuminated during normal vehicle
operation you should have your vehicle serviced before
going to the I/M station. The I/M station can fail your
vehicle because the MIL is on with the engine running.
WARNING!
 ONLY an authorized service technician should
connect equipment to the OBD II connection port in
order to read the VIN, diagnose, or service your
vehicle.
 If unauthorized equipment is connected to the OBD II
connection port, such as a driver-behavior tracking
device, it may:
 Be possible that vehicle systems, including
safety related systems, could be impaired or a
loss of vehicle control could occur that may
result in an accident involving serious injury or
death.
 Access, or allow others to access, information
stored in your vehicle systems, including
personal information.
3

23_JL_OM_EN_USC_t.book Page 125

126
STARTING AND OPERATING
STARTING THE ENGINE — GASOLINE
ENGINE (IF EQUIPPED)
Before starting your vehicle, adjust your seat, adjust both
inside and outside mirrors, and fasten your seat belts.
MANUAL TRANSMISSION — IF EQUIPPED
Apply the parking brake, place the gear selector in
NEUTRAL, and press the clutch pedal before starting the
vehicle. This vehicle is equipped with a clutch interlocking
ignition system. It will not start unless the clutch pedal is
pressed to the floor.
Four-Wheel Drive Models Only
In 4L mode, if the vehicle is stalled, the engine will start
regardless of whether or not the clutch pedal is pressed to
the floor. This feature enhances off-road performance by
allowing the vehicle to start when in 4L without having to
press the clutch pedal. The 4L Indicator Light will
illuminate when the transfer case has been shifted into
this mode.
AUTOMATIC TRANSMISSION —
I
F EQUIPPED
Start the vehicle with the gear selector in the PARK
position (vehicle can also be started in NEUTRAL). Apply
the brake before shifting to any driving range.
NORMAL STARTING
To Turn On The Engine Using The ENGINE START/STOP
Button

1. The transmission must be in PARK or NEUTRAL.

2. Press and hold the brake pedal while pushing the
ENGINE START/STOP button once. 3. The system takes over and attempts to start the
vehicle. If the vehicle fails to start, the starter will
disengage automatically after 10 seconds.
4. If you wish to stop the cranking of the engine prior to the engine starting, push the button again.
NOTE:Normal starting of either a cold or a warm engine is
obtained without pumping or pressing the accelerator
pedal.
To Turn Off The Engine Using The ENGINE START/STOP
Button

1. Place the gear selector in PARK, then push and release the ENGINE START/STOP button.

2. The ignition will return to the OFF position.
3. If the gear selector is not in PARK (with vehicle stopped) and the ENGINE START/STOP button is
pushed once, the transmission will automatically
select PARK and the engine will turn off while the
ignition will remain in the ACC position (NOT the OFF
position). Never leave a vehicle out of the PARK
position, or it could roll.
4. If the gear selector is in NEUTRAL, and the vehicle speed is below 5 mph (8 km/h), pushing the START/
STOP button once will turn the engine off. The ignition
will remain in the ACC position.
5. If the vehicle speed is above 5 mph (8 km/h), the ENGINE START/STOP button must be held for two WARNING!
When exiting the vehicle, always remove the key fob
from the ignition and lock your vehicle.
 Never leave children alone in a vehicle, or with
access to an unlocked vehicle.
 Allowing children to be in a vehicle unattended is
dangerous for a number of reasons. A child or others
could be seriously or fatally injured. Children should
be warned not to touch the parking brake, brake
pedal or the gear selector.
 Do not leave the key fob in or near the vehicle, or in
a location accessible to children. A child could
operate power windows, other controls, or move the
vehicle.
 Do not leave children or animals inside parked vehi -
cles in hot weather. Interior heat buildup may cause
serious injury or death.

23_JL_OM_EN_USC_t.book Page 126

STARTING AND OPERATING127
seconds (or three short pushes in a row) to turn the
engine off. The ignition will remain in the ACC position
(NOT the OFF position) if the engine is turned off when
the transmission is not in PARK.
NOTE:The system will automatically time out and the ignition will
cycle to the OFF position after 30 minutes of inactivity if
the ignition is left in the ACC or RUN (engine not running)
position and the transmission is in PARK.
ENGINE START/STOP Button Functions — With Driver’s
Foot OFF The Brake Pedal (In PARK Or NEUTRAL Position)
The ENGINE START/STOP button operates similar to an
ignition switch. It has three positions: OFF, ACC, and RUN.
To change the ignition positions without starting the
vehicle and use the accessories, follow these steps:

1. Start with the ignition in the OFF position.

2. Push the ENGINE START/STOP button once to place
the ignition to the ACC position (instrument cluster
will display “ACC”).
3. Push the ENGINE START/STOP button a second time to place the ignition to the RUN position (instrument
cluster will display “ON/RUN”).
4. Push the ENGINE START/STOP button a third time to return the ignition to the OFF position (instrument
cluster will display “OFF”).
AUTOPARK
AutoPark is a supplemental feature to assist with placing
the vehicle in PARK should the situations on the following
pages occur. It is a back-up system and should not be relied upon as the primary method by which the driver
shifts the vehicle into PARK.
The conditions under which AutoPark will engage are
outlined on the following pages.
If the vehicle is not in PARK and the driver turns off the
engine, the vehicle may AutoPark.
AutoPark will engage when all of these conditions are met:

Vehicle is equipped with an 8-speed transmission
 Driver’s door is ajar or if the driver’s door is removed
and the driver is not on the seat (seat pad sensor
detects driver missing)
 Vehicle is not in PARK
 Vehicle speed is 1.2 mph (1.9 km/h) or less
 Ignition is switched from RUN to OFF
NOTE:For Keyless Enter ‘n Go™ equipped vehicles, the engine
will turn off and the ignition switch will change to ACC
position.
If the vehicle is not in PARK and the driver exits the vehicle
with the engine running, the vehicle may AutoPark.
AutoPark will engage when all of these conditions are met:
Vehicle is equipped with an 8-speed transmission
 Driver’s door is ajar or if the driver’s door is removed
and the driver is not on the seat (seat pad sensor
detects driver missing)
 Vehicle is not in PARK
 Vehicle speed is 1.2 mph (1.9 km/h) or less
 Driver’s seat belt is unbuckled
 Brake pedal is not pressed
The message “ AutoPark Engaged Shift To P Then Shift To
Gear ” will display in the instrument cluster.
NOTE:In some cases the ParkSense graphic will be displayed in
the instrument cluster. In these cases, the gear selector
must be returned to “P” to select desired gear.
If the driver shifts into PARK while moving, the vehicle may
AutoPark.
AutoPark will engage ONLY when vehicle speed is 1.2 mph
(1.9 km/h) or less.
The message “ Vehicle Speed Is Too High To Shift To P ” will
be displayed in the instrument cluster if vehicle speed is
above 1.2 mph (1.9 km/h).
WARNING!
 Driver inattention could lead to failure to place the
vehicle in PARK. ALWAYS DO A VISUAL CHECK that
your vehicle is in PARK by verifying that a solid (not
blinking) “P” is indicated in the instrument cluster
display and on the gear selector. If the "P" indicator is
blinking, your vehicle is not in PARK. As an added
precaution, always apply the parking brake when
exiting the vehicle.
 AutoPark is a supplemental feature. It is not
designed to replace the need to shift your vehicle
into PARK. It is a back-up system and should not be
relied upon as the primary method by which the
driver shifts the vehicle into PARK.
4

23_JL_OM_EN_USC_t.book Page 127

128STARTING AND OPERATING
4L
AutoPark will be disabled when operating the vehicle in
4L.
The message “AutoPark Disabled ” will be displayed in the
instrument cluster.
Additional customer warnings will be given when both of
these conditions are met:
 Vehicle is not in PARK
 Driver’s door is ajar
The message “ AutoPark Not Engaged ” will be displayed in
the instrument cluster. A warning chime will continue until
you shift the vehicle into PARK or the driver’s door is
closed.
ALWAYS DO A VISUAL CHECK
that your vehicle is in PARK
by looking for the "P" in the instrument cluster display and
on the gear selector. As an added precaution, always apply
the parking brake when exiting the vehicle.
EXTENDED PARK STARTING
NOTE:Extended Park condition occurs when the vehicle has not
been started or driven for at least 30 days.
1. Install a battery charger or jumper cables to the
battery to ensure a full battery charge during the
crank cycle.

2. Place the ignition in the START position and release it when the engine starts. For vehicles equipped with
the ENGINE START/STOP button, press and hold the
brake pedal while pushing the ENGINE START/STOP
button once.
3. If the engine fails to start within 10 seconds, place the ignition in the OFF position, wait 10 to 15 seconds
to allow the starter to cool, then repeat the “Extended
Park Starting” procedure.
4. If the engine fails to start after eight attempts, allow the starter to cool for at least 10 minutes, then repeat
the procedure.
IF ENGINE FAILS TO START
If the engine fails to start after following the “Normal
Starting” procedure and the vehicle has not experience an
extended park condition, as previously defined, it may be
flooded. Push the accelerator pedal all the way to the floor
and hold it there. Crank the engine for no more than 10 to
15 seconds. This should clear any excess fuel in case the
engine is flooded. Leave the ignition in the RUN position,
release the accelerator pedal and repeat the “Normal
Starting” procedure.
EXTREME COLD WEATHER
(B
ELOW –22°F OR −30°C)
To ensure reliable starting at these temperatures, use of
an externally powered electric engine block heater
(available from an authorized dealer) is recommended.
WARNING!
If vehicle speed is above 1.2 mph (1.9 km/h), the
transmission will default to NEUTRAL until the vehicle
speed drops below 1.2 mph (1.9 km/h). A vehicle left in
the NEUTRAL position can roll. As an added precaution,
always apply the parking brake when exiting the vehicle.
CAUTION!
To prevent damage to the starter, do not crank
continuously for more than 10 seconds at a time. Wait
10 to 15 seconds before trying again.
WARNING!
 Never pour fuel or other flammable liquid into the
throttle body air inlet opening in an attempt to start
the vehicle. This could result in flash fire causing
serious personal injury.
 Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans -
mission cannot be started this way. Unburned fuel
could enter the catalytic converter and once the
engine has started, ignite and damage the converter
and vehicle.
 If the vehicle has a discharged battery, booster
cables may be used to obtain a start from a booster
battery or the battery in another vehicle. This type of
start can be dangerous if done improperly
Úpage 298.
CAUTION!
To prevent damage to the starter, do not continuously
crank the engine for more than 10 to 15 seconds at a
time. Wait 10 to 15 seconds before trying again.

23_JL_OM_EN_USC_t.book Page 128

STARTING AND OPERATING129
(Continued)
AFTER STARTING
The idle speed is controlled automatically and will
decrease as the engine warms up.
STARTING THE ENGINE — DIESEL ENGINE
(IF EQUIPPED)
Before starting your vehicle, adjust your seat, both inside
and outside mirrors, and fasten your seat belts.
The starter is allowed to crank for up to 25-second
intervals. Waiting two minutes between such intervals will
protect the starter from overheating.
NOTE:Engine start up in very low ambient temperature could
result in evident white smoke. This condition will
disappear as the engine warms up.
AUTOMATIC TRANSMISSION
Start the engine with the transmission gear selector in the
PARK (P) position. Apply the brake before shifting to any
driving range.
EXTREME COLD WEATHER
The cartridge block heater clips into the engine block near
the water jacket and transfers heat to the coolant. It
requires a 110–115 Volt AC electrical outlet with a
grounded, three-wire extension cord. Its use is
recommended for environments that routinely fall below
-10°F (-23°C). It should be used when the vehicle has not
been running overnight or longer periods and should be
plugged in for two hours prior to start. Its use is required
for cold starts with temperatures under -20°F (-28°C).
NOTE:The engine block heater and heater cord are
factory-installed options. If your vehicle is not equipped,
heater and heater cords are available from an authorized
Mopar® dealer.
A 12 Volt heater built into the fuel filter housing aids in
preventing fuel gelling. It is controlled by a built-in ther -
mostat.
 A Diesel Pre-Heat system both improves engine
starting and reduces the amount of white smoke
generated by a warming engine.
WARNING!
Before exiting a vehicle, always come to a complete
stop, then shift the automatic transmission into
PARK and apply the parking brake.
 Always make sure the ignition is in the OFF position,
key fob is removed from the vehicle and vehicle is
locked.
 Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Leaving children in a
vehicle unattended is dangerous for a number of
reasons. A child or others could be seriously or fatally
injured. Children should be warned not to touch the
parking brake, brake pedal or the gear selector.
Do not leave the key fob in or near the vehicle, or in
a location accessible to children, and do not leave
the ignition of a vehicle equipped with Keyless
Enter ‘n Go™ in the ACC or ON/RUN position. A child
could operate power windows, other controls, or
move the vehicle.
 Do not leave children or animals inside parked vehi -
cles in hot weather. Interior heat buildup may cause
serious injury or death.
CAUTION!
 The engine is allowed to crank as long as
25 seconds. If the engine fails to start during this
period, please wait at least two minutes for the
starter to cool before repeating start procedure.
 If the Water in Fuel Indicator Light remains on, DO
NOT START engine before you drain the water from
the fuel filters to avoid engine damage
Úpage 321.
WARNING!
4

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130STARTING AND OPERATING
NORMAL STARTING
Observe the instrument cluster lights when starting the
engine.
NOTE:Normal starting of either a cold or a warm engine is
obtained without pumping or pressing the accelerator
pedal.

1. Always apply the parking brake.

2. Press and hold the brake pedal while pushing the
ENGINE START/STOP button once.
NOTE:A delay of the start of up to five seconds is possible under
very cold conditions. The Wait to Start telltale will be illumi -
nated during the preheat process. When the engine Wait
To Start telltale goes off the engine will automatically
crank.
3. The system will automatically engage the starter to crank the engine. If the vehicle fails to start, the
starter will disengage automatically after 25 seconds.
4. If you wish to stop the cranking of the engine prior to the engine starting, push the ENGINE START/STOP
button again. 5. Check that the Oil Pressure Warning Light has turned
off.
6. Release the parking brake.
STARTING FLUIDS
The engine is equipped with a glow plug preheating
system. If the instructions in this manual are followed, the
engine should start in all conditions and no type of starting
fluid should be used.
NORMAL OPERATION — DIESEL ENGINE
Observe the following when the diesel engine is operating:
 All message center lights are off.
 Malfunction Indicator Light (MIL) is off.
 Engine Oil Pressure telltale is not illuminated.
 Voltmeter operation.
The voltmeter may show a gauge fluctuation at various
engine temperatures. This is caused by the glow plug
heating system. The number of cycles and the length of
the cycling operation is controlled by the engine control
module. Glow plug heater operation can run for several
minutes. Once the heater operation is complete, the
voltmeter needle will stabilize.
CAUTION!
If the Water in Fuel Indicator Light remains on, DO NOT
START the engine before you drain the water from the
fuel filters to avoid engine damage
Úpage 321.
WARNING!
 Do not leave children or animals inside parked vehi -
cles in hot weather. Interior heat buildup may cause
serious injury or death.
 When leaving the vehicle, always make sure the
keyless ignition node is in the OFF position, remove
the key fob from the vehicle and lock the vehicle.
 Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing children to
be in a vehicle unattended is dangerous for a
number of reasons. A child or others could be seri -
ously or fatally injured. Children should be warned
not to touch the parking brake, brake pedal or the
gear selector.
 Do not leave the key fob in or near the vehicle, or in
a location accessible to children, and do not leave
the ignition of a vehicle equipped with Keyless
Enter ‘n Go™ in the ACC or ON/RUN position. A child
could operate power windows, other controls, or
move the vehicle.

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132STARTING AND OPERATING
STOPPING THE ENGINE
After full load operation, idle the engine for a few minutes before shutting it down. This idle period will allow the lubricating oil and coolant to carry excess heat away from the
turbocharger.
NOTE:Refer to the following chart for proper engine shutdown.
NOTE:Under certain conditions the engine fan will run after the
engine is turned off. These conditions are under high load
and high temperature conditions.
COOLING SYSTEM TIPS — AUTOMATIC
T
RANSMISSION
To reduce the potential for engine and transmission
overheating in high ambient temperature conditions, take
the following actions:
 City Driving — When stopped, shift the transmission
into NEUTRAL (N) and increase engine idle speed.
 Highway Driving — Reduce your speed. 
Up Steep Hills — Select a lower transmission gear.
 Air Conditioning — Turn it off temporarily.
NOTE:If the coolant temperature is too high, the A/C will auto -
matically turn off.
Do Not Operate The Engine With Low Oil
Pressure
If the Oil Pressure Warning Light turns on while driving,
stop the vehicle and shut down the engine as soon as
possible. A chime will sound when the light turns on. After
the vehicle is safely stopped, restart the engine and
monitor the Oil Pressure Warning Light. If the Oil Pressure
Warning Light is still illuminated, turn the engine OFF and contact an authorized dealer for further assistance. If the
lamp is no longer illuminated, the engine can be operated
but it is recommended to take the vehicle to an authorized
dealer as soon as possible.
NOTE:Do not operate the vehicle until the cause is corrected.
This light does not show how much oil is in the engine. The
engine oil level must be checked under the hood.
Driving Condition Load Turbocharger Temperature Idle Time (min.) Before Engine Shutdown
Stop and Go EmptyCoolNone
Stop and Go Medium 0.5
Highway Speeds MediumWarm 1.0
City Traffic Maximum GCWR 1.5
Highway Speeds Maximum GCWR 2.0
Uphill Grade Maximum GCWR Hot2.5
CAUTION!
If oil pressure falls to less than normal readings, shut
the engine off immediately. Failure to do so could result
in immediate and severe engine damage.

23_JL_OM_EN_USC_t.book Page 132