2008 JEEP GRAND CHEROKEE service

Enable/Disable the Rear Park Assist System
The Rear Park Assist System can be enabled and disabled
with a switch located on the upper switch bank of the
instrument panel.When the switch is pressed to disable the system, the
instrument cluster will display the9PARK ASSIST DIS-
ABLED9message. Refer to ªElectronic Vehicle Informa-
tion Center (EVIC)º in Section 4 of this manual. When the
shifter is changed to R (Reverse) and the system is
disabled, the instrument cluster will actuate a single
chime, once per ignition cycle, and it will display the
message.
The Rear Park Assist Switch LED will be ON when the
Rear Park Assist System is disabled or defective. The
Rear Park Assist Switch LED will be OFF when the
system is enabled.
Service the Rear Park Assist System
When the Rear Park Assist System is defective, the
instrument cluster will actuate a single chime, once per
ignition cycle, and it will display the9SERVICE PARK
ASSIST SYSTEM9message. Refer to ªElectronic Vehicle
Information Center (EVIC)º in Section 4 of this manual.
Rear Park Assist Switch
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 145
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before engine start. If the bulb does not come on when
turning the key from OFF to ON, have the condition
checked promptly.
Certain conditions such as a loose or missing gas cap,
poor fuel quality, etc. may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several of your typical driving cycles. In
most situations the vehicle will drive normally and will
not require towing.
The Malfunction Indicator Light flashes to alert you to
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.
6. Airbag Warning Light
This light turns on and remains on for 6 to 8
seconds as a bulb check when the ignition
switch is first turned ON. If the light is not onduring starting, stays on, or turns on while driving, have
the system inspected by an authorized dealer as soon as
possible.
7. Anti-Lock Brake Warning Light
This light monitors the Anti-Lock Brake System.
The light will turn on when the ignition switch is
turned to the ON position and may stay on for as long as
four seconds.
If the ABS light remains on or turns on while driving, it
indicates that the Anti-Lock portion of the brake system
is not functioning and that 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 benefits of Anti-Lock
brakes. If the ABS light does not turn on when the
Ignition switch is turned to the ON position, have the
light inspected by an authorized dealer.
UNDERSTANDING YOUR INSTRUMENT PANEL 175
4

The gauge pointer will likely indicate a higher tempera-
ture when driving in hot weather, up mountain grades,
or when towing a trailer. It should not be allowed to
exceed the upper limits of the normal operating range.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If temperature gauge reads
high, pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the pointer
drops back into the normal range. If the pointer
remains high, and you hear continuous chimes, turn
the engine off immediately, and call for service.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. If you decide to look under the hood your-
self, refer to Section 7 of this manual. Follow the
warnings under ªCooling System Pressure Cap.º
14. Electronic Vehicle Information Center Display
When the appropriate conditions exist, this display
shows the Electronic Vehicle Information Center (EVIC)
messages. Refer to ªElectronic Vehicle Information Cen-
terº later in this section.
UNDERSTANDING YOUR INSTRUMENT PANEL 179
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15. Electronic Stability Program (ESP) Warning
Light/Brake Assist System (BAS) Warning Light Ð If
Equipped
The ESP/BAS warning light in the instrument
cluster comes on when the ignition switch is
turned to the ªONº position. The light should
go out with the engine running. If the ESP/
BAS warning light comes on continuously with the
engine running, a malfunction has been detected in either
the ESP or the BAS system. If this light stays illuminated,
have the ESP and BAS checked at your authorized dealer
as soon as possible.
16. Seat Belt Reminder Light
When the ignition switch is first turned ON, this
light will turn on for 5 to 8 seconds as a bulb check.
During the bulb check, if the driver's seat belt is
unbuckled, a chime will sound. After the bulb check or
when driving, if the driver or front passenger seat belt
remains unbuckled, the Seat Belt Warning Light will flashor remain on continuously. Refer to9Occupant Restraints
Ð Enhanced Driver Seat Belt Reminder System
(BeltAlert)9in Section 2 for more information.
17. Cruise Indicator Light
This indicator lights when the speed control
system is turned ON.
18. Odometer
The odometer shows the total distance the vehicle has
been driven.
U.S. federal regulations require that upon transfer of
vehicle ownership, the seller certify to the purchaser the
correct mileage that the vehicle has been driven. There-
fore, if the odometer reading is changed during repair or
replacement, be sure to keep a record of the reading
before and after the service so that the correct mileage can
be determined.
180 UNDERSTANDING YOUR INSTRUMENT PANEL

19. Transmission Range Indicator
This display indicator shows the automatic transmission
gear selection.
20. Fuel Gauge
The pointer shows the level of fuel in the fuel tank when
the ignition switch is in the ON position.
21. Electronic Throttle Control (ETC) Warning Light
This light informs you of a problem with the
Electronic Throttle Control system. If a problem
is detected the light will come on while the
engine is running. Cycle the ignition key when
the vehicle has completely stopped and the gear selector
is placed in the P (Park) position. The light should turn
off. If the light remains lit with the engine running your
vehicle will usually be drivable, however, see your dealer
for service as soon as possible. If the light is flashing
when the engine is running, immediate service is re-
quired and you may experience reduced performance, anelevated/rough idle or engine stall and your vehicle may
require towing. The light will come on when the ignition
is first turned on 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.
22. Front Fog Light Indicator LightÐ If Equipped
This light shows the front fog lights are ON.
23. Voltage Warning Light
This light monitors the electrical system voltage.
The light should turn on momentarily as the
engine is started. If the light stays on or turns on while
driving, it indicates a problem with the charging system.
Immediate service should be obtained.
24. Low Fuel Warning Light
When the fuel level reaches approximately 2.3 U.S.
Gallons (8.7 Liters) this light will come on and
remain on until fuel is added. The Low Fuel
UNDERSTANDING YOUR INSTRUMENT PANEL 181
4

The system allows the driver to select information by
pressing the following buttons mounted on the steering
wheel:
MENU Button
Press and release the MENU button and the
mode displayed will change between Trip
Functions, Personal Settings, and System Sta-
tus.
FUNCTION SELECT Button
Press the FUNCTION SELECT button to select
the displayed function (YES (Y) or NO (N).
SCROLL Button
Press the SCROLL button to scroll through Trip
Functions, Personal Settings (Customer Pro-
grammable Features), and System Status Mes-
sages.COMPASS/TEMPERATURE Button
Press and release the COMPASS/
TEMPERATURE button to display one of eight
compass readings and the outside temperature.
Electronic Vehicle Information Center (EVIC)
Displays
When the appropriate conditions exist, the Electronic
Vehicle Information Center (EVIC) displays the following
messages:
²TURN SIGNAL ON
²PERFORM SERVICE
²KEY NOT PROGRAMMED Ð DAMAGED KEY
²KEY NOT PROGRAMMED Ð INVALID KEY
²KEY NOT PROGRAMMED Ð EXCEEDED KEY PRO-
GRAM LIMIT
UNDERSTANDING YOUR INSTRUMENT PANEL 183
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²PROGRAMMING ACTIVE Ð NEW KEY PRO-
GRAMMED
²SERVICE SECURITY KEY
²INVALID KEY Ð TRY ALTERNATE KEY
²DRIVER/PASSENGER DOOR OPEN (with graphic)
²LEFT/RIGHT REAR DOOR OPEN (with graphic)
²X DOORS OPEN (with graphic)
²LIFTGATE OPEN (with graphic)
²LIFTGATE/DOOR OPEN (with graphic)
²LIFTGATE/DOORS OPEN (with graphic)
²LIFTGLASS OPEN (with graphic)
²HOOD OPEN (with graphic)
²HOOD/DOOR OPEN (with graphic)
²HOOD/DOORS OPEN (with graphic)
²LIFTGATE/HOOD OPEN (with graphic)
²HOOD/GLASS/DOOR OPEN (with graphic)
²HOOD/GLASS/DOORS OPEN (with graphic)
²HOOD/GATE/DOOR OPEN (with graphic)
²HOOD/GATE/DOORS OPEN (with graphic)
²LIFTGLASS/DOOR OPEN (with graphic)
²LIFTGLASS/DOORS OPEN (with graphic)
²LIFTGLASS/HOOD OPEN (with graphic)
²WASHER FLUID LOW (with graphic)
²COOLANT LOW (with graphic)
²UPSHIFT (with graphic)
²CHECK GAUGES
184 UNDERSTANDING YOUR INSTRUMENT PANEL

²AUTO HIGH BEAMS ON
²AUTO HIGH BEAMS OFF
²PARK ASSIST DISABLED
²SERVICE SUSPENSION
²SERVICE PARK ASSIST SYSTEM
²TRANSMISSION OVER TEMP
²LOW BRAKE FLUID LEVEL
²WARNING! LIMIT SPEED
²CHECK GASCAP
²ESP OFF
²IOD FUSE OUT
²MEMORY #1 POSITIONS SET
²MEMORY #2 POSITIONS SET
²MEMORY SYSTEM DISABLED Ð SEATBELT BUCK-
LED (with graphic)
²MEMORY SYSTEM DISABLED Ð VEHICLE NOT IN
PARK
²DRIVER 1 MEMORY
²DRIVER 2 MEMORY
²ADJ. PEDALS DISABLED Ð CRUISE CONTROL SET
²ADJ. PEDALS DISABLED Ð SHIFTER IN REVERSE
²TIRE LOW PRESSURE
²CHECK TPM SYSTEM
²LEFT FRONT LOW PRESSURE (Premium TPM Sys-
tem Only)
²RIGHT FRONT LOW PRESSURE (Premium TPM Sys-
tem Only)
UNDERSTANDING YOUR INSTRUMENT PANEL 185
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