warning JEEP WRANGLER 2017 JK / 3.G Service Manual

System Warnings
Displays “SYSTEM OK” if there are no active Warning
Messages stored. Pushing and releasing thedownarrow
button when “SYSTEM OK” is displayed will do nothing.
Displays “SYSTEM WARNINGS PRESENT” if there are
active Warning Messages stored. Pushing and releasing the
down arrow button when “SYSTEM WARNINGS PRES-
ENT” is displayed will display each stored warning for
each button push. Push and release the MENUbutton to
return to the Main Menu.
Tire Pressure — If Equipped
Push and release the MENUbutton until “Tire PSI/kpa:”
displays in the instrument cluster display. It shows a
graphic of the vehicle with a tire pressure value at each
corner of the graphic.
Vehicle Information
Push and release the MENUbutton until “Vehicle Infor-
mation” displays in the instrument cluster display. Then,
push the downarrow button to display any one of the
following choices:
• Coolant Temperature
Shows the actual coolant temperature.
• Oil Pressure
Shows the actual oil pressure.
• Transmission Temperature — Automatic Transmission
Only
Shows the actual transmission fluid temperature.
• Oil Life Remaining (Automatic Oil Change Indicator)
— If Equipped
Shows the oil life measured in percentage.
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Oil Change Required
Your vehicle is equipped with an engine oil change indi-
cator system. The “Oil Change Required” message will
display in the instrument cluster display for approximately
10 seconds after a single chime 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.
Unless reset, this message will continue to display each
time you turn the ignition switch to the ON position. To
turn off the message temporarily, push and release the
MENUbutton. To reset the oil change indicator system
(after performing the scheduled maintenance), perform the
following procedure:
1. Turn the ignition switch to the ON position. Do not start
the engine.
2. Fully push the accelerator pedal slowly three times within 10 seconds.
3. Turn the ignition switch to the LOCK position.
NOTE: If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary, repeat this procedure.
WARNING/INDICATOR LIGHTS AND MESSAGES
The warning/indicator light switches on in the instrument
panel together with a dedicated message and/or acoustic
signal when applicable. These indications are indicative
and precautionary and as such must not be considered as
exhaustive and/or alternative to the information contained
in the Owner Manual, which you are advised to read
carefully in all cases. Always refer to the information 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 options and current vehicle status. Some tell-
tales are optional and may not appear.
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Red Telltale Indicator Lights
Air Bag Warning Light
Red TelltaleLight What It Means
Air Bag Warning Light
This light will turn on for four to eight seconds as a bulb check when the ignition switch is first
turned to ON/RUN. If the light is either not on during startup, stays on, or turns on while driv-
ing, have the system inspected at an authorized dealer as soon as possible. This light will illumi-
nate with a single chime when a fault with the Air Bag Warning Light has been detected, it will
stay on until the fault is cleared. If the light comes on intermittently or remains on while driving,
have an authorized dealer service the vehicle immediately. Refer to “Occupant Restraint Systems”
in “Safety” for further information.
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Brake Warning Light
Red TelltaleLight What It Means
English
Metric
Brake Warning Light
This light monitors various brake functions, including brake fluid level and parking brake appli-
cation. If the brake light turns on it may indicate that the parking brake is applied, that the brake
fluid level is low, or that there is a problem with the anti-lock brake system reservoir.
If the light remains on when the parking brake has been disengaged, and the fluid level is at the
full mark on the master cylinder reservoir, it indicates a possible brake hydraulic system mal-
function or that a problem with the Brake Booster has been detected by the Anti-Lock Brake Sys-
tem (ABS) / Electronic Stability Control (ESC) system. In this case, the light will remain on until
the condition has been corrected. If the problem is related to the brake booster, the ABS pump
will run when applying the brake, and a brake pedal pulsation may be felt during each stop.
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The dual brake system provides a reserve braking capacity
in the event of a failure to a portion of the hydraulic
system. A leak in either half of the dual brake system is
indicated by the Brake Warning Light, which will turn on
when the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is corrected.
NOTE:The light may flash momentarily during sharp
cornering maneuvers, which change fluid level conditions.
The vehicle should have service performed, and the brake
fluid level checked.
If brake failure is indicated, immediate repair is necessary.
WARNING!
Driving a vehicle with the red brake light on is
dangerous. Part of the brake system may have failed. It
will take longer to stop the vehicle. You could have a
collision. Have the vehicle checked immediately. Vehicles equipped with the Anti-Lock Brake System (ABS)
are also equipped with Electronic Brake Force Distribution
(EBD). In the event of an EBD failure, the Brake Warning
Light will turn on along with the ABS Light. Immediate
repair to the ABS system is required.
Operation of the Brake Warning Light can be checked by
turning the ignition switch from the OFF position to the
ON/RUN position. The light should illuminate for ap-
proximately two seconds. The light should then turn off
unless the parking brake is applied or a brake fault is
detected. If the light does not illuminate, have the light
inspected by an authorized dealer.
The light also will turn on when the parking brake is
applied with the ignition switch in the ON/RUN position.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake application.
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Battery Charge Warning Light
Red TelltaleLight What It Means
Battery Charge Warning Light
This light illuminates when the battery is not charging properly. If it stays on while the engine is run-
ning, there may be a malfunction with the charging system. Contact your authorized dealer as soon
as possible. This indicates a possible problem with the electrical system or a related component.
If jump starting is required, refer to “Jump-Starting Procedures” in “In Case Of Emergency.”
Coolant Temperature Warning Light
Red Telltale
Light What It Means
Coolant Temperature Warning Light
This light warns of an overheated engine condition. 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 into
NEUTRAL and idle the vehicle. If the temperature reading does not return to normal, turn the
engine off immediately and call for service.
NOTE:
As the coolant temperature gauge approaches H,this indicator will illuminate and a
single chime will sound. Further overheating will cause the temperature gauge to pass H.In
this case, a continuous chime will sound until the engine is allowed to cool or the 4 minute dura-
tion is expired, whichever comes first.
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Electronic Throttle Control (ETC) Warning Light
Red TelltaleLight What It Means
Electronic Throttle Control (ETC) Warning Light
This light informs you of a problem with the Electronic Throttle Control (ETC) system. If a prob-
lem is detected while the engine 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 re-
mains on with the vehicle under power, your vehicle will usually be drivable; however, see an
authorized dealer for service as soon as possible.
If the light continues to flash when the engine vehicle under power, immediate service is re-
quired and you may experience reduced performance, and your vehicle may require towing. The
light will come on when the ignition is placed in the ON/RUN position and remain on briefly as
a bulb check. If the light does not come on during starting, have the system checked by an au-
thorized dealer.
Oil Pressure Warning Light
Red Telltale
Light What It Means
Oil Pressure Warning Light
This light indicates low engine oil pressure. If the light turns on while driving, stop the vehicle
and shut off the engine as soon as possible. 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.
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Seat Belt Reminder Warning Light
Red TelltaleLight What It Means
Seat Belt Reminder Warning Light
When the ignition switch is first turned to ON/RUN, this light will turn on for four to eight sec-
onds as a bulb check. During the bulb check, if the driver’s or passenger seat belt is unbuckled, a
chime will sound. After the bulb check or when driving, if the driver ’s 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.
Vehicle Security Warning Light — If Equipped
Red Telltale
Light What It Means
Vehicle Security Warning Light — If Equipped
This light will flash at a fast rate for approximately 15 seconds when the vehicle security alarm is
arming, and then will flash slowly until the vehicle is disarmed.
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Yellow Telltale Indicator Lights
Low Fuel Warning Indicator Light
Yellow TelltaleLight What It Means
Low Fuel Warning Indicator Light
When the fuel level reaches approximately 2.8 gal (10.6 L), this light will turn on and a single
chime will sound.
Anti-Lock Brake (ABS) Indicator Light
Yellow Telltale
Light What It Means
Anti-Lock Brake (ABS) Indicator Light
This light monitors the Anti-Lock Brake System (ABS). The light will turn on when the ignition
switch is placed in the 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. However, the conventional brake system will
continue to operate normally if the brake warning light is not on.
If the ABS light is on, the brake system should be serviced as soon as possible to restore the ben-
efits of Anti-Lock Brakes. If the ABS light does not turn on when the ignition switch is placed in
the ON/RUN position, have the light inspected by an authorized dealer.
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Engine Malfunction Warning Light
Yellow TelltaleLight What It Means
Engine Check/Malfunction Indicator Light (MIL)
The Engine Check/Malfunction Indicator Light (MIL) is a part of an Onboard Diagnostic System
called OBD II that monitors engine and automatic transmission control systems. The light will
illuminate when the ignition is in the ON position before engine start. If the bulb does not come
on when placing the ignition in the ON/RUN position, 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 im-
mediate 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 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 engine
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.
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