2018 JEEP WRANGLER tire pressure

INSTRUMENT CLUSTER
DISPLAY — IF EQUIPPED
Your vehicle may be equipped with an instru-
ment cluster display, which offers useful in-
formation to the driver. With the ignition in
the STOP/OFF mode, opening/closing of a
door will activate the display for viewing, and
display the total miles, or kilometers, in the
odometer. Your instrument cluster display is
designed to display important information
about your vehicle’s systems and features.
Using a driver interactive display located on
the instrument panel, your instrument clus-
ter display can show you how systems are
working and give you warnings when they
aren’t. The steering wheel mounted controls
allow you to scroll through and enter the main
menus and submenus. You can access the
specific information you want and make se-
lections and adjustments.
Instrument Cluster Display Location And
Controls
The instrument cluster display features a
driver-interactive display that is located in
the instrument cluster.
This system conveniently allows the driver to
select a variety of useful information by push-
ing the switches mounted on the steeringwheel. The instrument cluster display con-
sists of the following:
• Compass Heading (N, S, E, W, NE, NW, SE,
SW)
• Outside Temperature (°F or °C)
• ECO Display
• Digital Speedometer
• Average Fuel Economy
• Distance To Empty
• Tire Pressure Monitor System —
If Equipped
• Elapsed Time
• Vehicle Info
• Units Selection
• System Status and Warnings
(Door Open, etc.)
• Personal Settings
(Customer-Programmable Features)
Instrument Cluster Display
GETTING TO KNOW YOUR INSTRUMENT PANEL
56

The system allows the driver to select infor-
mation by pushing the following buttons
mounted on the steering wheel:• Push theMENUbutton to scroll through the
main menus (Speedometer, Fuel
Economy, Miles To Empty, Tire Pressure,
Warnings, Timer, Vehicle Info, Units, Sys-
tem Warning, Personal Settings) or to exit
submenus.
• Push therightarrow button for access to
main menus, submenus or to select a per-
sonal setting in the setup menu.
• Push thecompassbutton to display one of
eight compass readings and the outside
temperature or to exit sub menus.
• Push thedownarrow button to scroll down-
ward through the submenus.
Instrument Cluster Display Messages
When the appropriate conditions exist, the
instrument cluster will display the following
messages:
• Low Tire Pressure
• Low Fuel
• Service TPM System (refer to "Tire Pressure
Monitoring System" in "Safety" for further
information)
• Damaged Key• Key In Ignition
• Turn Signal On (with a continuous warning
chime)
• Left Front Turn Signal Lamp Out (with a
single chime)
• Left Rear Turn Signal Lamp Out (with a
single chime)
• Right Front Turn Signal Lamp Out (with a
single chime)
• Right Rear Turn Signal Lamp Out (with a
single chime)
• Key Fob Battery Low (with a single chime)
• Personal Settings Not Avail. – Vehicle Not
in Park — automatic transmission
• Personal Settings Not Avail. – Vehicle in
Motion — manual transmission
• Door Open (with vehicle graphic showing
which door is open. A single chime sounds
if the vehicle is in motion)
• Gate Open (with vehicle graphic showing
the Liftgate/back door open and a single
chime sounds if the vehicle is in motion)Instrument Cluster Display Control Buttons
1 — MENU But-
ton3 — Down Arrow
Button
2 — Right Arrow
Button4 — Compass
Button
57

and automatic transmission control systems.
The 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 illumi-
nate 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 as soon as possible if this
occurs.
WARNING!
A malfunctioning catalytic converter, as
referenced above, can reach higher tem-
peratures than in normal operating condi-
tions. This can cause a fire if you drive
WARNING!
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 dam-
age 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.
— 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 con-
sumption may not be guaranteed.Should one or more tires be in the condition
mentioned above, the display will show the
indications corresponding to each tire in
sequence.
CAUTION!
Do not continue driving with one or more
flat tires as handling may be compro-
mised. Stop the vehicle, avoiding sharp
braking and steering. If a tire puncture
occurs, repair immediately using the dedi-
cated tire repair kit and contact your au-
thorized dealer as soon as possible.
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure la-
bel. (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.)
GETTING TO KNOW YOUR INSTRUMENT PANEL
62

As an added safety feature, your vehicle has
been equipped with a tire pressure monitor-
ing system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, 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. Under-inflation
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 under-inflation 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 willflash for approximately one minute and then
remain continuously illuminated. This se-
quence will continue upon subsequent ve-
hicle 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 replace-
ment or alternate tires or wheels on the ve-
hicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunc-
tion 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!
The TPMS has been optimized for the
original equipment tires and wheels.
TPMS pressures and warning have been
established for the tire size equipped on
your vehicle. Undesirable system opera-
tion or sensor damage may result when
using replacement equipment that is not
CAUTION!
of the same size, type, and/or style. After-
market wheels can cause sensor damage.
Using aftermarket tire sealants may cause
the Tire Pressure Monitoring System
(TPMS) sensor to become inoperable. Af-
ter using an aftermarket tire sealant it is
recommended that you take your vehicle to
your authorized dealer to have your sensor
function checked.
Yellow Indicator Lights
— Front Axle Lock Indicator Light — If
Equipped
Indicates when the front axle lock has been
activated.
— Rear Axle Lock Indicator Light — If
Equipped
This light indicates when the rear axle lock
has been activated.
63

SAFETY
SAFETY FEATURES...........68
Anti-Lock Brake System (ABS)......68
Electronic Brake Control System.....69
AUXILIARY DRIVING SYSTEMS . .77
Tire Pressure Monitor System (TPMS) . .77
OCCUPANT RESTRAINT
SYSTEMS..................84
Occupant Restraint Systems........84
Important Safety Precautions.......84
Seat Belt Systems..............85
Supplemental Restraint Systems (SRS). .92
Child Restraints — Carrying Children
Safely......................99
Transporting Pets..............112
SAFETY TIPS...............112
Transporting Passengers..........112
Exhaust Gas.................112
Safety Checks You Should Make
Inside The Vehicle.............113
Periodic Safety Checks You Should Make
Outside The Vehicle.............114
SAFETY
67

6. Push the “ESC Off” button located in the
lower switch bank below the climate con-
trol four times within 20 seconds. The
“ESC Off Indicator Light” should turn on
and turn off two times.
7. Rotate the steering wheel back to center
and then an additional slightly more than
one-half turn to the right.
8. Turn the ignition to the OFF mode and
then back to ON. If the sequence was
completed properly, the “ESC Off Indica-
tor Light” will blink several times to con-
firm HSA is disabled.
9. Repeat these steps if you want to return
this feature to its previous setting.
Traction Control System (TCS)
This system monitors the amount of wheel
spin of each of the driven wheels. If wheel
spin is detected, the TCS may apply brake
pressure to the spinning wheel(s) and/or re-
duce engine power to provide enhanced ac-
celeration and stability. A feature of the TCS,
Brake Limited Differential (BLD), functions
similar to a limited slip differential and con-
trols the wheel spin across a driven axle. Ifone wheel on a driven axle is spinning faster
than the other, the system will apply the
brake of the spinning wheel. This will allow
more engine torque to be applied to the wheel
that is not spinning. BLD may remain en-
abled even if TCS and ESC are in a reduced
mode.
Electronic Stability Control (ESC)
This system enhances directional control and
stability of the vehicle under various driving
conditions. The ESC corrects for over/under
steering of the vehicle by applying the brake
of the appropriate wheel to assist in counter-
acting the over/under steer condition. Engine
power may also be reduced to help the ve-
hicle maintain the desired path.
ESC uses sensors in the vehicle to determine
the vehicle path intended by the driver and
compares it to the actual path of the vehicle.
When the actual path does not match the
intended path, ESC applies the brake of the
appropriate wheel to assist in counteracting
the oversteer or understeer condition.
• Oversteer - when the vehicle is turning more
than appropriate for the steering wheel po-
sition.• Understeer - when the vehicle is turning
less than appropriate for the steering wheel
position.
The “ESC Activation/Malfunction Indicator
Light” (located in the instrument cluster),
starts to flash as soon as the tires lose trac-
tion and the ESC system becomes active. The
“ESC Activation/Malfunction Indicator
Light” also flashes when TCS is active. If the
“ESC Activation/Malfunction Indicator
Light” begins to flash during acceleration,
ease up on the accelerator and apply as little
throttle as possible. Be sure to adapt your
speed and driving to the prevailing road
conditions.
WARNING!
• Electronic Stability Control (ESC) can-
not prevent the natural laws of physics
from acting on the vehicle, nor can it
increase the traction afforded by prevail-
ing road conditions. ESC cannot prevent
accidents, including those resulting
from excessive speed in turns, driving on
very slippery surfaces, or hydroplaning.
71

Gear Approximate HDC Set
Speed
3rd 4 mph (6.5 km/h)
4th 5.5 mph (9 km/h)
DRIVE 7.5 mph (12 km/h)
REVERSE 1 mph (1.5 km/h)
However, the driver can override HDC opera-
tion by applying the brake to slow the vehicle
down below the HDC control speed. If more
speed is desired during HDC control, the
accelerator pedal will increase vehicle speed
in the usual manner. When either the brake or
the accelerator is released, HDC will control
the vehicle at the original set speed.
Enabling HDC
1. Shift the transfer case into 4WD LOW
range. Refer to “Four-Wheel Drive Opera-
tion” in “Starting and Operating” for fur-
ther information.
2. Push the “Hill Descent” button. The “Hill
Descent Control Indicator Light” in the
instrument cluster will turn on solid.NOTE:
• If the transfer case is not in 4WD LOW
range, the “Hill Descent Control Indica-
tor Light” will flash for five seconds and
HDC will not be enabled.
• If the ESC senses that the brakes are
overheating the “Hill Descent Control
Indicator Light” will flash for five sec-
onds and HDC will become deactivated
until the brakes have cooled.
Disabling HDC
Push the “Hill Descent” button or shift the
transfer case out of 4WD LOW range. The
“Hill Descent Control Indicator” light in the
instrument cluster will turn off.
AUXILIARY DRIVING
SYSTEMS
Tire Pressure Monitor System (TPMS)
The Tire Pressure Monitoring System (TPMS)
will warn the driver of a low tire pressure
based on the vehicle recommended cold
placard pressure.The tire pressure will vary with temperature
by about 1 psi (7.0 kPa) for every 12°F
(6.5°C). This means that when the outside
temperature decreases, the tire pressure will
decrease. Tire pressure should always be set
based on cold inflation tire pressure. This is
defined as the tire pressure after a vehicle
has not been driven for more than three
hours, or driven less than 1 mile (1.6 km)
after a three-hour period. Refer to “Tires” in
“Servicing and Maintenance” for information
on how to properly inflate the vehicle’s tires.
The tire pressure will also increase as the
vehicle is driven; this is normal and there
should be no adjustment for this increased
pressure.
The TPMS will warn the driver of a low tire
pressure if the tire pressure falls below the
low pressure warning threshold for any rea-
son, including low temperature effects, or
natural pressure loss through the tire.
The TPMS will continue to warn the driver of
low tire pressure as long as the condition
exists, and will not turn off until the tire
pressure is at or above recommended cold
placard pressure. Once the “Tire Pressure
77

Monitoring Telltale Light” has been illumi-
nated, the tire pressure must be increased to
the recommended cold placard pressure in
order for the “Tire Pressure Monitoring Tell-
tale Light” to be turned OFF.
NOTE:
When filling warm tires, the tire pressure may
need to be increased up to an additional 4 psi
(30 kPa) above the recommended cold plac-
ard pressure in order to turn the Tire Pressure
Monitoring Telltale Light off.
The system will automatically update and the
“Tire Pressure Monitoring Telltale Light” will
extinguish once the updated tire pressures
have been received. The vehicle may need to
be driven for up to 10 minutes above 15 mph
(24 km/h) to receive this information.
For example, your vehicle may have a recom-
mended cold (parked for more than three
hours) air pressure of 35 psi (241 kPa). If the
ambient temperature is 68°F (20°C) and the
measured tire pressure is 30 psi (207 kPa), a
temperature drop to 20°F (-7°C) will de-
crease the tire pressure to approximately
26 psi (179 kPa). This tire pressure is suffi-
ciently low enough to turn ON the “Tire Pres-sure Monitoring Telltale Light.” Driving the
vehicle may cause the tire pressure to rise to
approximately 30 psi (207 kPa), but the “Tire
Pressure Monitoring Telltale Light” will still
be ON. In this situation, the “Tire Pressure
Monitoring Telltale Light” will turn OFF only
after the tires have been inflated to the vehi-
cle’s recommended cold placard pressure
value.
CAUTION!
• The TPMS has been optimized for the
original equipment tires and wheels.
TPMS pressures and warnings have
been established for the tire size
equipped on your vehicle. Undesirable
system operation or sensor damage may
result when using replacement equip-
ment that is not of the same size, type,
and/or style. The TPM sensor is not de-
signed for use on aftermarket wheels
and may contribute to a poor overall
system performance or sensor damage.
Customers are encouraged to use OEM
wheels to assure proper TPM feature
operation.
CAUTION!
• Using aftermarket tire sealants may
cause the Tire Pressure Monitoring Sys-
tem (TPMS) sensor to become inoper-
able. After using an aftermarket tire
sealant it is recommended that you take
your vehicle to an authorized dealership
to have your sensor function checked.
• After inspecting or adjusting the tire
pressure, always reinstall the valve stem
cap. This will prevent moisture and dirt
from entering the valve stem, which
could damage the Tire Pressure Monitor-
ing Sensor.
NOTE:
• The TPMS is not intended to replace nor-
mal tire care and maintenance, nor to pro-
vide warning of a tire failure or condition.
• The TPMS should not be used as a tire
pressure gauge while adjusting your tire
pressure.
SAFETY
78