2018 JEEP WRANGLER UNLIMITED engine

Manual Operation Override
This system offers a full complement of
manual override features. The AUTO symbol
in the front ATC display will be turned off
when the system is being used in the manual
mode.
Operating Tips
Summer Operation
The engine cooling system must be protected
with a high-quality antifreeze coolant to pro-
vide proper corrosion protection and to pro-
tect against engine overheating. OAT coolant
(conforming to MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and de-
froster performance, make sure the engine
cooling system is functioning properly and
the proper amount, type, and concentration
of coolant is used. Use of the Air Recircula-
tion mode during Winter months is not rec-
ommended, because it may cause window
fogging.
Vacation/Storage
Before you store your vehicle, or keep it out of
service (i.e., vacation) for two weeks or more,
run the air conditioning system at idle for
about five minutes, in fresh air with the
blower setting on high. This will ensure ad-
equate system lubrication to minimize the
possibility of compressor damage when the
system is started again.
Window Fogging
Vehicle windows tend to fog on the inside in
mild, rainy, and/or humid weather. To clear
the windows, select Defrost or Mix mode and
increase the front blower speed. Do not use
the Recirculation mode without A/C for long
periods, as fogging may occur.
CAUTION!
Failure to follow these cautions can cause
damage to the heating elements:
• Use care when washing the inside of
the rear window. Do not use abrasive
window cleaners on the interior surface
of the window. Use a soft cloth and a
CAUTION!
mild washing solution, wiping parallel
to the heating elements. Labels can be
peeled off after soaking with warm
water.
• Do not use scrapers, sharp instru-
ments, or abrasive window cleaners on
the interior surface of the window.
• Keep all objects a safe distance from
the window.
Outside Air Intake
Make sure the air intake, located directly in
front of the windshield, is free of obstruc-
tions, such as leaves. Leaves collected in the
air intake may reduce airflow, and if they
enter the plenum, they could plug the water
drains. In Winter months, make sure the air
intake is clear of ice, slush, and snow.
Cabin Air Filter
The climate control system filters out dust
and pollen from the air. Contact an autho-
rized dealer to service your cabin air filter,
and to have it replaced when needed.
45

CAUTION!
life and/or prevent the engine from start-
ing.
• Accessories that draw higher power (i.e.,
coolers, vacuum cleaners, lights, etc.),
will degrade the battery even more
quickly. Only use these intermittently
and with greater caution.
• After the use of high power draw acces-
sories, or long periods of the vehicle not
being started (with accessories still
plugged in), the vehicle must be driven a
sufficient length of time to allow the
alternator to recharge the vehicle's bat-
tery.
• Power outlets are designed for accessory
plugs only. Do not hang any type of
accessory or accessory bracket from the
plug. Improper use of the power outlet
can cause damage.
Power Inverter — If Equipped
There is a 230 Volt, 150 Watt inverter outlet
located on the back of the center console to
convert DC current to AC current.
This outlet can power cellular phones, elec-
tronics and other low power devices requiring
power up to 150 Watts. Certain high-end
video game consoles exceed this power limit,
as will most power tools.The power inverter is designed with built-in
overload protection. If the power rating of
150 Watts is exceeded, the power inverter
automatically shuts down. Once the electri-
cal device has been removed from the outlet,
the inverter should automatically reset. If the
power rating exceeds approximately
170 Watts, the power inverter may have to be
reset manually.
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.
Power Inverter
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Auxiliary Switches — If Equipped
Four auxiliary switches located in the lower
switch bank of the instrument panel can be
used to power various electrical devices. You
have the ability to configure the functionality
of the auxiliary switches via the Uconnect
settings. All switches can be configured for
setting the switch type operation to latching
or momentary, power source of either battery
or ignition, and ability to hold last state
across key cycles.NOTE:
Holding last state conditions are met when
switch type is set to latching and power
source is set to ignition.
For more information, refer to “Uconnect
Settings” in “Multimedia” in your owner’s
manual.
For the connection and installation of your
electrical devices refer to your authorized
dealership.
ENVIRONMENTAL
PROTECTION SYSTEMS
Gasoline Particulate Filter (GPF) — 2.0L
T4 200kW Petrol Versions Only
The Gasoline Particulate Filter is a mechani-
cal filter, integral to the exhaust system,
which physically traps carbon particles pres-
ent in the exhaust gases of 2.0L T4 200kW
petrol engine.The particulate filter is needed to eliminate
almost all carbon particle emissions in com-
pliance with current/future regulations and
standards.
Since this filter physically traps particulates,
it must be cleaned (regenerated) during nor-
mal driving operation to remove carbon par-
ticles. The regeneration procedure is con-
trolled automatically by the engine control
unit according to the filter conditions and car
use conditions.
The following may occur during regeneration:
increased levels of noise vibration and harsh-
ness (NVH) and reduced engine perfor-
mance.
Dedicated messages can appear in the in-
strument cluster display as a result of the
condition of the filter. Refer to the opening
paragraph of the "Warning Lights And Mes-
sages" section for further information.
Auxiliary Switches
GETTING TO KNOW YOUR VEHICLE
60

• Push theuparrow button to scroll upward
through the main menus (Speedometer,
MPH/km/h, Vehicle Info, Terrain, Driver As-
sist, Fuel Economy, Trip A, Trip B,Stop/Start, Audio, Navigation, Stored Mes-
sages, Screen Setup and Speed Warning).
• Push thedownarrow button to scroll down-
ward through the main menu and sub-
menus (Speedometer, MPH/km/h, Vehicle
Info, Terrain, Driver Assist, Fuel Economy,
Trip A, Trip B, Stop/Start, Audio, Naviga-
tion, Stored Messages, Screen Setup and
Speed Warning).
• Push therightarrow button to access the
information screens or submenu screens of
a main menu item.
• Push theleftarrow button to access the
information screens or submenu screens of
a main menu item.
• Push theOKbutton to access/select the
information screens or submenu screens of
a main menu item. Push and hold theOK
button for two seconds to reset displayed/
selected features that can be reset.Oil Change Indicator System — If Equipped
Your vehicle is equipped with an engine oil
change indicator system. The “Oil Change
Due” message will display in the instrument
cluster display for five seconds after a singlechime 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.
Instrument Cluster Display Selectable Items
The instrument cluster display can be used to
view the following main menu items:
NOTE:
Depending on the vehicles options, feature
settings may vary.
• Speedometer • Stop/Start
• Vehicle Info • Audio
• Off Road • Messages
• Fuel Economy • Screen Setup
• Trip Info
NOTE:
Refer to your Owner’s Manual for further
information.
Instrument Cluster Display Control Buttons
1 — OK Button
2 — Up Arrow Button
3 — Right Arrow Button
4 — Down Arrow Button
5 — Left Arrow Button
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MESSAGE DESCRIPTION
Diesel Emissions Additive AdBlue (UREA) Warning Messages:
Low Diesel Emissions Additive Ad-
Blue (UREA) Level WarningThe first low level warning will be given at around a 1490 miles (2400 km) range, and is determined accord-
ing to the current consumption rate. The “UREA Low Level” warning light and message will display on the
instrument panel. The UREA low level warning light will remains lit until the AdBlue (UREA) tank is topped
up with at least 1.32 gallons (5 Liters) of UREA.
If the level is not resolved, an additional warning appear whenever a certain threshold is reached until it will
no longer be possible to start the engine.
When 125 miles (200 km) are remaining before the AdBlue (UREA) tank is empty, a message will appear on
the instrument panel, accompanied by a buzzer sound. When the range is at 0, the display will show a dedi-
cated message (if equipped). In this case, the engine will not restart.
It will be possible to restart the engine again as soon as AdBlue (UREA) is added; the minimum amount re-
quired is 1.32 gallons (5 Liters). Fill the AdBlue (UREA) tank as soon as possible with at least 1.32 gallons
(5 Liters) of UREA. If filling is completed with autonomy tank AdBlue (UREA) to zero, it could be possible to
wait 2 minutes before starting the vehicle.
NOTE:
When the AdBlue (UREA) tank is empty, and the vehicle is stopped, it is no longer possible to restart the
vehicle until a minimum of 1.32 gallons (5 Liters) of AdBlue (UREA) is added to the AdBlue (UREA) tank.
Diesel Emissions Additive AdBlue (UREA) Fault Warning Messages:
Engine Will Not Restart Service
AdBlue System See DealerThis message will display if AdBlue (UREA) system issue detected is not serviced during the allowed period.
Your engine will not restart unless your vehicle is serviced by your authorized dealer. If the level is not re-
solved, an additional warning appear whenever a certain threshold is reached until it will no longer be pos-
sible to start the engine. When 125 miles (200 km) are remaining before the AdBlue tank is empty, a mes-
sage will appear on the instrument panel, accompanied by a buzzer sound.
65

MESSAGE DESCRIPTION
Engine Will Not Start Service Ad-
Blue System See DealerNOTE:
• The display may take up to five seconds to update after adding 2 gallons (7.5 Liters) or more of AdBlue
(UREA) to the AdBlue (UREA) tank. If you have a fault related to the AdBlue (UREA) system, the display
may not update to the new level. See an authorized dealer for service.
• AdBlue freezes at temperatures lower than 51.8°F (11°C). If the car stands for a long time at this tem-
perature, refilling could be difficult. For this reason, it is advised to park the vehicle in a garage and/or
heated environment, and wait for the AdBlue (UREA) to return to liquid state before topping up.
Gasoline Particulate Filter (GPF) System Messages — If Equipped:
Exhaust System Service Re-
quiredThe engine control unit has detected an issue with the gasoline particulate filter system. See an autho-
rized dealer.
Exhaust System Regeneration in
Process Continue DrivingThe regeneration procedure is controlled automatically by the engine control unit according to the filter
conditions and car use conditions. The following may occur during regeneration: increased levels of noise
vibration and harshness (NVH) and reduced engine performance. The driver should continue driving nor-
mally. This message will continue to appear until regeneration is complete.
Exhaust System Regeneration
CompleteThe exhaust gas filter regeneration has been completed. This message will briefly appear.
WARNING LIGHTS AND
MESSAGES
The warning/indicator lights will illuminate in
the instrument panel together with a dedi-
cated message and/or acoustic signal when
applicable. These indications are indicative
and precautionary and as such must not be
considered as exhaustive and/or alternativeto the information contained in the Owner’s
Manual, which you are advised to read care-
fully in all cases. Always refer to the informa-
tion 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 op-
tions and current vehicle status. Some tell-
tales are optional and may not appear.
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 or
ACC/ON/RUN position. This light will illumi-
nate with a single chime when a fault with the
GETTING TO KNOW YOUR INSTRUMENT PANEL
66

— 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. Con-
tact 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.
— Electric Power Steering Fault
Warning Light
This warning light will turn on when there's a
fault with the EPS (Electric Power Steering)
system. Refer to “Power Steering” in “Start-
ing And Operating” in the Owner’s Manual for
further information.
WARNING!
Continued operation with reduced assist
could pose a safety risk to yourself and
others. Service should be obtained as soon
as possible.
— Electronic Throttle Control (ETC)
Warning Light
This warning light will illuminate to indicate
a problem with the Electronic Throttle Con-
trol (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 ve-
hicle is running, immediate service is re-
quired and you may experience reduced per-
formance, 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 or ACC/ON/RUN posi-
tion 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 Warn-
ing Light
This warning light warns of an overheated
engine condition. If the engine coolant tem-
perature is too high, this indicator will illumi-
nate and a single chime will sound. If the
temperature reaches the upper limit, a con-
tinuous 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 A/C system is
on, turn it off. Also, shift the transmission
GETTING TO KNOW YOUR INSTRUMENT PANEL
68

into NEUTRAL and idle the vehicle. If the
temperature reading does not return to nor-
mal, turn the engine off immediately and call
for service.
Refer to “If Your Engine Overheats” in “In
Case Of Emergency” for further information.
— Hood Open Warning Light
This indicator will illuminate when the hood
is ajar/open and not fully closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Oil Pressure Warning Light
This warning light will illuminate to indicate
low engine oil pressure. If the light turns on
while driving, stop the vehicle, shut off the
engine as soon as possible, and contact an
authorized dealer. A chime will sound when
this light turns on.
Do not operate the vehicle until the cause is
corrected. This light does not indicate how
much oil is in the engine. The engine oil level
must be checked under the hood.
— Oil Temperature Warning Light
This warning light will illuminate to indicate
the engine oil temperature is high. If the light
turns on while driving, stop the vehicle and
shut off the engine as soon as possible. Wait
for oil temperature to return to normal levels.
— Seat Belt Reminder Warning Light
This warning light indicates when the driver
or passenger seat belt is unbuckled. When
the ignition is first placed in the ON/RUN or
ACC/ON/RUN position and if the driver’s seat
belt is unbuckled, a chime will sound and the
light will turn on. When driving, if the driver
or front passenger seat belt remains unbuck-
led, the Seat Belt Reminder Light will flash or
remain on continuously and a chime will
sound.
Refer to “Occupant Restraint Systems” in
“Safety” for further information.
— Rear Seat Belt Reminder Warning
Light — If Equipped
This light indicates when a rear seat belt is
unbuckled in the second row. When the igni-
tion is first placed in the ON/RUN or ACC/ON/RUN position, and if a seat belt in the second
row is unbuckled, a light corresponding to the
specific seat will turn on in the upper right
portion of the instrument cluster display, mo-
mentarily replacing the configurable corner
information. If a second row seat belt that
was buckled at the start of the trip is unbuck-
led, the Rear Seat Belt Reminder Light will
change from green to red and a single chime
will sound.
Refer to “Occupant Restraint Systems” in
“Safety” for further information.
— Swing Gate Open Warning Light
This warning light will illuminate when the
swing gate is open.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Transmission Temperature Warning
Light — If Equipped
This warning light will illuminate to warn of a
high transmission fluid temperature. This
may occur with strenuous usage such as
trailer towing. If this light turns on, stop the
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