2018 JEEP WRANGLER UNLIMITED ENGINE WARNING LIGHTS

electrical devices (e.g. headlights) after an
accident, reset the system by following the
procedure described below. If you have any
doubt, contact an authorized dealer.
Enhanced Accident Response System Reset
Procedure
In order to reset the Enhanced Accident Re-
sponse System functions after an event, the
ignition switch must be changed from igni-
tion START or ON/RUN to ignition OFF. Care-
fully check the vehicle for fuel leaks in the
engine compartment and on the ground near
the engine compartment and fuel tank before
resetting the system and starting the engine.
Maintaining Your Air Bag System
WARNING!
• Modifications to any part of the air bag
system could cause it to fail when you
need it. You could be injured if the air
bag system is not there to protect you.
Do not modify the components or wiring,
including adding any kind of badges or
stickers to the steering wheel hub trim
WARNING!
cover or the upper passenger side of the
instrument panel. Do not modify the
front bumper, vehicle body structure, or
add aftermarket side steps or running
boards.
• It is dangerous to try to repair any part of
the air bag system yourself. Be sure to
tell anyone who works on your vehicle
that it has an air bag system.
• Do not attempt to modify any part of your
air bag system. The air bag may inflate
accidentally or may not function prop-
erly if modifications are made. Take your
vehicle to an authorized dealer for any
air bag system service. If your seat, in-
cluding your trim cover and cushion,
needs to be serviced in any way (includ-
ing removal or loosening/tightening of
seat attachment bolts), take the vehicle
to an authorized dealer. Only manufac-
turer approved seat accessories may be
used. If it is necessary to modify the air
bag system for persons with disabilities,
contact an authorized dealer.
Event Data Recorder (EDR)
This vehicle is equipped with an event data
recorder (EDR). The main purpose of an EDR
is to record, in certain crash or near crash-
like situations, such as an air bag deployment
or hitting a road obstacle, data that will assist
in understanding how a vehicle’s systems
performed. The EDR is designed to record
data related to vehicle dynamics and safety
systems for a short period of time, typically
30 seconds or less. The EDR in this vehicle is
designed to record such data as:
• How various systems in your vehicle were
operating;
• Whether or not the driver and passenger
safety belts were buckled/fastened;
• How far (if at all) the driver was depressing
the accelerator and/or brake pedal; and,
• How fast the vehicle was traveling.
These data can help provide a better under-
standing of the circumstances in which
crashes and injuries occur.
SAFETY
120

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 run-
ning. This is in violation of most coun-
tries regulations and may cause the
“Malfunction Indicator Light” to turn
on.
WARNING!
• Do not apply any object/cap to the end of
the filler which is not provided for the
car. The use of non-compliant objects/
plugs could cause a pressure increase
inside the tank, resulting in dangerous
situations.
• 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 after-
market cap can cause the “Malfunction
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.NOTE:
• When the fuel nozzle “clicks” or shuts off,
the fuel tank is full.
• Tighten the fuel filler cap about 1/4 turn
until you hear one click. This is an indica-
tion that the cap is properly tightened.
• If the fuel filler cap is not tightened prop-
erly, the MIL will come on. Be sure the cap
is tightened every time the vehicle is
refueled.
Adblue (UREA) — If Equipped
The vehicle is equipped with an UREA injec-
tion system and Selective Catalytic Reduc-
tion to meet emission standards. These two
systems ensure compliance with the diesel
emissions requirements; at the same, they
ensure fuel-efficiency, handling, torque and
power. For messages and system warnings,
refer to the "Warning Lights And Messages" in
the "Getting To Know Your Instrument Panel"
section. AdBlue (UREA) is a very stable prod-
uct with a long shelf life. Stored at tempera-
tures LOWER than 90 °F (32 °C), it has a
shelf life of at least one year. For more infor-
mation on the AdBlue liquid type, see the
Fuel and AdBlue (UREA) Fill Location
1 — Diesel Fuel Filler
2 — AdBlue (UREA) Filler
STARTING AND OPERATING
168

“Fluids and lubricants” in the “Technical
specifications” section. The vehicle is
equipped with an automatic AdBlue heating
system when the engine starts allowing the
system to work correctly at temperatures
lower than 12 °F (-11 °C).
NOTE:
AdBlue freezes at temperatures lower than
12 °F (-11 °C).
AdBlue (UREA) Storage
AdBlue (UREA) is considered a very stable
product with a long shelf life. If AdBlue
(UREA) is kept in temperatures between
10° and 90°F (-12° and 32°C), it will last a
minimum of one year.
AdBlue (UREA) is subject to freezing at the
lowest temperatures. For example, AdBlue
(UREA) 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 AdBlue (UREA), it is
important to know that:
• Any containers or parts that come into con-
tact with AdBlue (UREA) must be AdBlue
(UREA) compatible (plastic or stainless
steel). Copper, brass, aluminum, iron or
non-stainless steel should be avoided as
they are subject to corrosion by AdBlue
(UREA).
• If AdBlue (UREA) is spilled, it should be
wiped up completely.
Adding AdBlue (UREA)
Preliminary Conditions
AdBlue (UREA) freezes at temperatures
lower than 12° F (-11° C). If the car stands for
a long time at this temperature 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 urea to return to
liquid state before topping up.
Proceed as follows:
• Park the car on flat ground and stop the
engine by cycling the ignition to the OFF
position.• Open the fuel door, undo and remove the
cap (blue) from the AdBlue (UREA) filler.
Refilling With Nozzles
You can fill up at any AdBlue (UREA) dis-
tributor.
Proceed as follows:
• Insert the AdBlue (UREA) nozzle in the
filler, start refilling and stop refilling at the
first shut-off (the shut-off indicates that the
AdBlue (UREA) tank is full). Do not pro-
ceed with the refilling, to prevent spillage
of AdBlue (UREA).
• 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
AdBlue (UREA) tank.
• If systems which cannot be screwed in (e.g.
tanks) are used for refilling, after the indi-
cation appears on the instrument panel
display refer to “Warning lights And Mes-
sages" in the “Getting To Know Your Instru-
169

ment Panel” for further information, fill the
AdBlue (UREA) tank with no more than
2 Gallons (8 liters).
• If containers which can be screwed to the
filler are used, the reservoir is full when the
AdBlue (UREA) level in the container stops
pouring out. Do not proceed further.
Operations After Refilling
Proceed as follows:
• Fit the cap back on the AdBlue (UREA)
filler by turning it clockwise and screwing it
completely.
• Cycle the ignition to RUN (it is not neces-
sary to start the engine).
• Wait for the indication on the instrument
panel to switch off before moving the car.
The indication may stay on for a few sec-
onds to approximately half a minute. If the
engine is started and the car is moved, the
indication will remain on for longer. This
will not compromise engine operation.• If the AdBlue (UREA) was topped up when
the tank was empty, wait for 2 minutes
before starting the engine.
NOTE:
• If AdBlue (UREA) is spilled out of the filler
neck, clean up well the area and proceed to
filling up again. If the liquid crystallizes,
eliminate it with a sponge and warm water.
• DO NOT EXCEED THE MAXIMUM LEVEL:
this could cause damage to the reservoir.
AdBlue (UREA) freezes at under 12° F
(-11° C). Although the system is designed
to operate below the freezing point of the
UREA, it is advisable not to fill the tank
beyond the maximum level because if the
UREA freezes the system can be damaged.
Follow the instructions in this section.
• If the AdBlue (UREA) is spilled on painted
surfaces or aluminium, immediately clean
the area with water and use absorbent ma-
terial to collect the fluid that has been
spilled on the ground.• Do not try to start the engine if AdBlue
(UREA) was accidentally added to the die-
sel fuel tank, this can result in serious
engine damage, contact an authorized
dealer.
• Do not add additives or other fluids to
AdBlue (UREA), doing so could damage the
system.
• The use of non-conforming or degraded
AdBlue (UREA) may lead to indications
appearing on the instrument panel display
refer to “Warning Lights And Messages" in
the “Getting To Know Your Instrument
Panel” for further information.
• Never pour AdBlue (UREA) into another
container: it could be contaminated.
• If the AdBlue (UREA) runs out, see refer to
“Warning Lights And Messages" in the
“Getting To Know Your Instrument Panel”
for further information to continue using
the car normally.
STARTING AND OPERATING
170

Accessories..................262
Mopar...................262
Adding Fuel.................166
Additives, Fuel................253
Air Bag
Air Bag Operation............111
Air Bag Warning Light.........108
Disable, Passenger Air Bag......111
Enhanced Accident Response .119, 205
Event Data Recorder (EDR)......205
Front Air Bag...............110
If Deployment Occurs.........118
Knee Impact Bolsters.........116
Maintaining Your Air Bag System . .120
Maintenance...............120
Redundant Air Bag Warning Light . .109
Transporting Pets............136
Air Bag Light...........66, 108, 137
Air Conditioning Filter............45
Air Conditioning, Operating Tips......45
Air Conditioning System...........44
Air Pressure
Tires....................231
Alarm
Arm The System.............17Disarm The System............18
Security Alarm............17, 70
Alterations/Modifications
Vehicle....................3
Android Auto..........275, 281, 314
Apps....................284
Communication.............284
Maps...................283
Music...................284
Antifreeze (Engine Coolant)........257
Anti-Lock Brake System (ABS).......82
Anti-Lock Warning Light...........70
Apple CarPlay.........276, 285, 314
Apps....................287
Maps...................286
Messages.................286
Music
...................286
Phone...................286
Assist, Hill Start................84
Audio Systems (Radio)...........270
Auto Down Power Windows.........46
Automatic Headlights............36
Automatic Temperature Control (ATC) . . .44
Automatic Transmission..........148
Fluid Level Check............225Fluid Type................261
Auxiliary Electrical Outlet (Power Outlet). .57
Auxiliary Power Outlet............57
Auxiliary Switches..............60
Axle Fluid...................261
Axle Lock...................156
Battery..................68, 221
Charging System Light..........68
Belts, Seat..................137
Blind Spot Monitoring............91
B-Pillar Location..............226
Brake Assist System.............83
Brake Control System............83
Brake Fluid..............224, 261
Brake System................224
Fluid Check...............224
Master Cylinder.............224
Warning Light...............67
Brake/Transmission Interlock.......148
Bulb Replacement..........176, 178
Bulbs, Light..............139, 176
Camera, Rear................165
Capacities, Fluid..............257
INDEX
335

Caps, Filler
Fuel.................166, 167
Oil (Engine)...............217
Carbon Monoxide Warning.........137
Car Washes..................239
Center High Mounted Stop Light.....180
Chains, Tire..................237
Change Oil Indicator.............63
Changing A Flat Tire............226
Check Engine Light (Malfunction Indicator
Light)....................79
Checking Your Vehicle For Safety. . . .136
Checks, Safety................136
Child Restraints
Child Seat Installation.........134
How To Stow An unused ALR Seat
Belt....................134
Cleaning
Wheels..................236
Climate Control
Automatic.................39
Clock Settings................269
Compact Spare Tire.............235
Connector
UCI ....................289
Universal Consumer Interface (UCI) .289
Cooling System...............224Coolant Capacity............257
Inspection................224
Selection Of Coolant
(Antifreeze)............257, 259
Cruise Light.............75, 77, 78
Customer Assistance............318
Cybersecurity.................267
Daytime Running Lights...........35
Dealer Service................221
Defroster, Windshield............138
Delay (Intermittent) Wipers.........38
Diagnostic System, Onboard........78
Dimmer Switch, Headlight.........35
Dipsticks
Oil (Engine)...............220
Disabled Vehicle Towing..........202
Disturb................
.305, 313
Door Ajar.................68, 69
Door Ajar Light..............68, 69
Doors......................18
Removal................22, 24
Removal, Front..............22
Removal, Rear...............24
Drag And Drop Menu........273, 279
Driver’s Seat Back Tilt............26Dual Top....................54
Electrical Outlet, Auxiliary (Power
Outlet)....................57
Electrical Power Outlets...........57
Electric Brake Control System.......83
Anti-Lock Brake System.........82
Electronic Roll Mitigation.....85, 88
Electronic Speed Control (Cruise
Control)..................160
Electronic Stability Control (ESC).....85
Electronic Throttle Control Warning
Light.....................68
Emergency, In Case Of
Jacking...............189, 226
Jump Starting..............196
Emission Control System Maintenance . .79
Emissions...................262
Engine.....................217
Break-In Recommendations......146
Compartment.......217, 218, 219
Compartment
Identification........217, 218, 219
Coolant (Antifreeze)..........259
Cooling..................224
Exhaust Gas Caution..........137
Fuel Requirements........252, 257
INDEX
336

Jump Starting..............196
Oil..................257, 259
Oil Filler Cap...............217
Oil Selection...............257
Overheating...............199
Starting..................142
Enhanced Accident Response
Feature...............119, 205
Exhaust Gas Cautions...........137
Exhaust System...............137
Exterior Lights.............35, 139
Fabric Care..................240
Fabric Top..................240
Filters
Air Conditioning..............45
Engine Oil................259
Flashers
Hazard Warning.............176
Turn Signal............178, 179
Turn Signals.............76, 139
Flash-To-Pass.................36
Fluid, Brake.................261
Fluid Capacities...............257
Fluid Leaks..................139
Fluid Level Checks
Brake...................224Engine Oil................220
Fluids And Lubricants...........259
Fog Lights.............36, 74, 179
Fog Light Service..............179
Fold And Tumble Rear Seat.........29
Fold-Flat Seats................26
Folding Rear Seats..............28
Four-Way Hazard Flasher..........176
Four Wheel Drive..............150
Operation.................150
Shifting..................150
Systems..................150
Four Wheel Drive Operation
. . . .150, 153
Freedom Panels................51
Freeing A Stuck Vehicle..........201
Fuel......................252
Adding..................166
Additives.................253
Consumption...............262
Filler Cap (Gas Cap).......166, 167
Gasoline.................252
Materials Added.............253
Octane Rating...........252, 259
Requirements..............257
Specifications..............259
Tank Capacity..............257
Fueling....................166Fuses.....................180
Gas Cap (Fuel Filler Cap)......166, 167
Gasoline (Fuel)................252
Gasoline Particulate Filter (GPF)......60
General Information.............288
Glass Cleaning................243
Hard Top....................51
Hazard Warning Flasher..........176
Headlights
Automatic.................36
Bulb Replacement...........178
Cleaning.................239
High Beam/Low Beam Select Switch .35
Leveling...................37
Lights On Reminder...........37
Passing...................36
Replacing.................178
Head Restraints................30
Heated Mirrors.................35
High Beam/Low Beam Select (Dimmer)
Switch....................35
Hill Descent Control.............89
Hill Descent Control Indicator.......89
Hill Start Assist................84
Hood Prop...................56
337

Hood Release.................56
Ignition.....................15
Switch...................15
Installation...................51
Installing....................54
Instrument Cluster..............63
Descriptions................76
Display...................62
Menu Items................63
Instrument Panel Lens Cleaning.....243
Integrated Power Module (Fuses). . . .181
Interior Appearance Care.........242
Intermittent Wipers (Delay Wipers)....38
Introduction...................1
Inverter, Power................59
Jacking Instructions............191
Jack Location................190
Jack Operation.........191, 192, 226
Jump Starting................196
Key Fob
Arm The System.............17
Disarm The System............18
Keyless Enter-N-Go..............18
Passive Entry...............18Keys.......................13
Replacement...............14
Lane Change Assist..............37
Lap/Shoulder Belts.............102
Latches....................139
Hood....................56
Leaks, Fluid.................139
Leveling, Headlight..............37
Life Of Tires.................233
Light Bulbs..............139, 176
Lights.....................139
AirBag ............66, 108, 137
Automatic Headlights..........36
Back-Up.................179
Brake Assist Warning...........87
Brake Warning...............67
Bulb Replacement........176, 178
Center Mounted Stop..........180
Cruise...............75, 77, 78
Daytime Running.............35
Dimmer Switch, Headlight.......35
Engine Temperature Warning......68
Exterior...............35, 139
Fog ..................74, 179
Hazard Warning Flasher........176
Headlight Leveling............37Headlights................178
High Beam.................35
High Beam/Low Beam Select......35
Hill Descent Control Indicator.....89
Lights On Reminder...........37
Malfunction Indicator (Check Engine).71
Park.....................75
Passing...................36
Rear Servicing..............179
Rear Tail Lamps.............179
Seat Belt Reminder......69, 76, 77
Security Alarm..............70
Service...............176, 178
Side Marker...............179
Tire Pressure Monitoring (TPMS)....94
Traction Control..............87
Turn Signal............178, 179
Turn Signals............76, 139
Warning Instrument Cluster
Descriptions.............68, 76
Loading Vehicle
Tires....................226
Locking Axle.................156
Locks
Child Protection..............21
Lowering....................47
Lowering The Top...............47
INDEX
338