2018 JEEP WRANGLER UNLIMITED instrument panel

Gear Shift Indicator (GSI) — If Equipped
The Gear Shift Indicator (GSI) system is en-
abled on vehicles with a manual transmis-
sion, or when a vehicle with an automatic
transmission is in manual shift mode. The
GSI provides the driver with a visual indica-
tion when the recommended gear shift point
has been reached. This indication notifies
the driver that changing gear will allow a
reduction in fuel consumption. When the up
shift indicator is shown on the instrument
cluster display, the GSI is advising the driver
to engage a higher gear. When the down shift
indicator is shown on the display, the GSI is
advising the driver to engage a lower gear.
The GSI indicator remains illuminated until
the driver changes gear, or the driving condi-
tions return to a situation where changing
gear is not required to improve fuel consump-
tion.
Fuel System Messages
The following chart contains a list of different
messages that may appear in the instrument
cluster, depending on different system or fuel
conditions. Use the descriptions to interpret
what the message means and determine the
best action to take.
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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
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— 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
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68

vehicle and run the engine at idle or slightly
faster, with the transmission in PARK or
NEUTRAL, until the light turns off. Once the
light turns off, you may continue to drive
normally.
WARNING!
If you continue operating the vehicle when
the Transmission Temperature Warning
Light is illuminated you could cause the
fluid to boil over, come in contact with hot
engine or exhaust components and cause
a fire.
CAUTION!
Continuous driving with the Transmission
Temperature Warning Light illuminated
will eventually cause severe transmission
damage or transmission failure.
— Vehicle Security Warning Light — If
Equipped
This light will flash at a fast rate for approxi-
mately 15 seconds when the vehicle security
alarm is arming, and then will flash slowly
until the vehicle is disarmed.
Yellow Warning Lights
— Anti-Lock Brake (ABS) Warning
Light
This warning light monitors the Anti-Lock
Brake System (ABS). The light will turn on
when the ignition is placed in the ON/RUN or
ACC/ON/RUN position and may stay on for as
long as four seconds.
If the ABS light remains on or turns on while
driving, then the Anti-Lock portion of the
brake system is not functioning and service is
required as soon as possible. However, the
conventional brake system will continue to
operate normally, assuming the Brake Warn-
ing Light is not also on.If the ABS light does not turn on when the
ignition is placed in the ON/RUN or ACC/ON/
RUN position, have the brake system in-
spected by an authorized dealer.
— Electronic Stability Control (ESC)
Active Warning Light — If Equipped
This warning light will indicate when the
Electronic Stability Control system is Active.
The “ESC Indicator Light” in the instrument
cluster will come on when the ignition is
placed in the ON/RUN or ACC/ON/RUN posi-
tion, and when ESC is activated. It should go
out with the engine running. If the “ESC
Indicator Light” comes on continuously with
the engine running, a malfunction has been
detected in the ESC system. If this warning
light remains on after several ignition cycles,
and the vehicle has been driven several miles
(kilometers) at speeds greater than 30 mph
(48 km/h), see an authorized dealer as soon
as possible to have the problem diagnosed
and corrected.
• The “ESC Off Indicator Light” and the
“ESC Indicator Light” come on momen-
tarily each time the ignition is placed in the
ON/RUN or ACC/ON/RUN position.
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CAUTION!
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.
— 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 conform-
ing with acceptable characteristics is in-
serted, or if an average consumption of Ad-
Blue (UREA) over 50% is detected. Contact
an authorized dealer as soon as possible.
If the problem is not solved, a specific mes-
sage 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 mi (200 km) are remaining
before the AdBlue (UREA) tank is empty, a
continuous dedicated message will appear on
the instrument panel, accompanied by a
buzzer sound (If Equipped).
SERV4WD— 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 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 autho-
rized dealer for service.
— Speed Control Fault Warning Light
This warning light will illuminate to indicate
the Speed 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.
— 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.
CAUTION!
Do not continue driving with one or more
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Yellow Indicator Lights
/— 4WD Indicator Light — If
Equipped
This light alerts the driver that the vehicle is
in the four-wheel drive mode, and the front
and rear driveshafts are mechanically locked
together forcing the front and rear wheels to
rotate at the same speed.
4L/4WD
LOW— 4WD Low Indicator Light — If
Equipped
This light alerts the driver that the vehicle is
in the four-wheel drive 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 in-
creased torque at the wheels.
4HPART
TIME/4WD
PART
TIME—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 mechani-
cally locked together forcing the front and
rear wheels to rotate at the same speed.
— Active Speed Limiter Fault Indica-
tor Light — If Equipped
This warning light will illuminate to signal
when there is a fault detected with the Active
Speed Limiter.
— Axle Locker Fault Indicator Light
This light indicates when the front and/or rear
axle locker fault has been detected.
— 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.
N/NEUTRAL— 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.
— Rear Fog Indicator — If Equipped
This indicator light will illuminate when the
rear fog lights are on.
— Sway Bar Indicator Light — If
Equipped
This indicator light will illuminate when the
front sway bar is disconnected.
— Wait To Start Light — If Equipped
This indicator light will illuminate for ap-
proximately two seconds when the ignition is
turned to the RUN position. Its duration may
be longer based on colder operating condi-
tions. Vehicle will not initiate start until tell-
tale is no longer displayed.
Refer to “Starting The Engine” in “Starting
And Operating” for further information.
NOTE:
The “Wait To Start” telltale may not illumi-
nate if the intake manifold temperature is
warm enough.
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— Rear Seat Belt Fastened Indicator
Light — If Equipped
This light indicates when a rear seat belt has
been buckled in the second row. A telltale
will display in the upper right corner of the
instrument cluster display to correspond to
the specific seating position once the seat
belt has been buckled.
Refer to “Occupant Restraint Systems” in
“Safety” for further information.
— Stop/Start Active Indicator Light —
If Equipped
This indicator light will illuminate when the
Stop/Start function is in “Autostop” mode.
— Turn Signal Indicator Lights
When the left or right turn signal is activated,
the turn signal indicator will flash indepen-
dently and the corresponding exterior turn
signal lamps will flash. Turn signals can be
activated when the multifunction lever is
moved down (left) or up (right).NOTE:
• A continuous chime will sound if the ve-
hicle is driven more than 1 mile (1.6 km)
with either turn signal on.
• Check for an inoperative outside light bulb
if either indicator flashes at a rapid rate.
White Indicator Lights
2H— Two Wheel Drive High Indicator
Light — If Equipped With a Premium Cluster
This light alerts the driver that the vehicle is
in the two wheel drive high mode.
— Active Speed Limiter Ready Indica-
tor Light — If Equipped With A Premium
Instrument Cluster
This light will illuminate when the Active
Speed Limiter has been turned on, but not
set.
— Active Speed Limiter SET Indicator
Light — If Equipped With A Base Instrument
Cluster
This light will turn on when the Active Speed
Limiter is on and set to a specific speed.
— Hill Descent Control (HDC) Indicator
Light — If Equipped
This indicator shows when the Hill Descent
Control (HDC) feature is turned on. The lamp
will be on solid when HDC is armed. HDC can
only be armed when the transfer case is in the
“4WD LOW” position and the vehicle speed
is less then 30 mph (48 km/h). If these
conditions are not met while attempting to
use the HDC feature, the HDC indicator light
will flash on/off.
— Rear Seat Belt Fastened Indicator
Light — If Equipped
This light indicates when a rear seat belt has
been buckled in the second row. A telltale
will display in the upper right corner of the
instrument cluster display to correspond to
the specific seating position once the seat
belt has been buckled.
Refer to “Occupant Restraint Systems” in
“Safety” for further information.
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