2010 JEEP GRAND CHEROKEE tires

Airbag Warning Light
The light should come on and remain on for six to eight
seconds as a bulb check when the ignition switch is first
turned ON. If the light is not lit during starting, see your
authorized dealer. If the light stays on, flickers, or comes
on while driving, have the system checked by an autho-
rized dealer.
Defroster
Check operation by selecting the defrost mode and place
the blower control on high speed. You should be able to
feel the air directed against the windshield. See your
authorized dealer for service if your defroster is
inoperable.
Periodic Safety Checks You Should Make Outside
the Vehicle
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objectslodged in the tread. Inspect the tread and sidewall for
cuts and cracks. Check the wheel nuts for tightness.
Check the tires (including spare) for proper pressure.
Lights
Have someone observe the operation of exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Door Latches
Check for positive closing, latching, and locking.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
engine coolant, oil, or other fluid leaks. Also, if gasoline
fumes are detected or if fuel, power steering fluid, or
brake fluid leaks are suspected, the cause should be
located and corrected immediately.
74 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

11. Electronic Stability Program (ESP) Indicator Light
/ Traction Control System (TCS) Indicator LightIf this indicator light flashes during accelera-
tion, apply as little throttle as possible. While
driving, ease up on the accelerator. Adapt your
speed and driving to the prevailing road con-
ditions, and do not switch off the Electronic Stability
Program (ESP), or Traction Control System (TCS).
12. Tire Pressure Monitoring Telltale Light Each tire, including the spare (if provided),
should be checked monthly, when cold and
inflated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (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.) As an added safety feature, your vehicle has been
equipped with a Tire Pressure Monitoring System
(TPMS) that illuminates a low tire pressure telltale when
one or more of your tires is significantly under-inflated.
Accordingly, when the low tire pressure telltale illumi-
nates, 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.
162 UNDERSTANDING YOUR INSTRUMENT PANEL

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 will flash for
approximately one minute and then remain continuously
illuminated. This sequence will continue upon subse-
quent vehicle start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the sys-
tem 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 replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the
TPMS malfunction 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 re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use tire sealant from a can, or
balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
13. Temperature Gauge
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily.
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UNDERSTANDING YOUR INSTRUMENT PANEL 163

unlocked with the RKE transmitter. To make your selec-
tion, press and release the FUNCTION SELECT button
until “OFF,” “30 sec.,” “60 sec.,” or “90 sec.” appears.
Hill Start Assist
To make your selection, press and release the FUNC-
TION SELECT button until YES (Y) or NO (N) appears.
Display Units of Measure In:
The EVIC, odometer, and Uconnect™ gps (if equipped)
can be changed between English and Metric units of
measure. To make your selection, press and release the
FUNCTION SELECT button until “ENGLISH” or “MET-
RIC” appears.
Display ECO — If Equipped
The “ECO” message is located in the Compass/
Temperature display, this message can be turned on or
off. To make your selection, press and release the FUNC-
TION SELECT button until “ON” or “OFF” appears.
System Status
Press and release the MENU button until one of the
following System Status messages displays in the EVIC:
•System OK
•System Warnings Displayed (will display all currently
active System Warnings)
•Tire Pressure Monitor System (shows the current pres-
sure of all four road tires). For additional information,
refer to “Tire Pressure Monitor System” in “Starting
And Operating”.
182 UNDERSTANDING YOUR INSTRUMENT PANEL

NOTE:
•Tires heat up during normal driving conditions. Heat
will cause the tire pressure to increase from 2 to 6 psi
(14 to 41 kPa) during normal driving conditions. Referto “Tires-General Information/Tire Inflation Pres-
sures” in “Starting And Operating” for additional
information.
•Your system can be set to display pressure units in PSI,
kPa, or BAR.
MEDIA CENTER 730N/430 (RER/REN/RBZ) —
AM/FM STEREO RADIO AND CD/DVD/HDD/NAV —
IF EQUIPPED
NOTE:
The sales code is located on the lower right side
of the unit’s faceplate.
The REN, RER and RBZ radios contain a CD/DVD
player, USB port, and a 30-gigabyte hard drive (HDD).
Sirius Satellite Radio is optional. The 6.5 in (16.5 cm)
touch screen allows for easy menu selection.
The RER radio also contains a Global Positioning System
(GPS)-based Navigation system.
Tire Pressure Display
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UNDERSTANDING YOUR INSTRUMENT PANEL 183

▫Hill Start Assist (HSA) – Four-Wheel Drive
Models With NV245 Two–Speed Transfer
Case Only ......................... 278
▫ Hill Descent Control (HDC) – Four-Wheel
Drive Models With NV245 Two–Speed
Transfer Case Only ................... 281
▫ ESP/BAS Warning Light And ESP/TCS
Indicator Light ...................... 283
 Tire Safety Information ................. 284
▫ Tire Markings ....................... 284
▫ Tire Identification Number (TIN) ......... 288
▫ Tire Terminology And Definitions ......... 289
▫ Tire Loading And Tire Pressure .......... 291
 Tires — General Information ............. 295
▫ Tire Pressure ....................... 295 ▫
Tire Inflation Pressures ................ 296
▫ Tire Pressures For High Speed Operation . . . 298
▫ Radial-Ply Tires ..................... 298
▫ Compact Spare Tire – If Equipped ........ 298
▫ Tire Spinning ....................... 299
▫ Tread Wear Indicators ................. 300
▫ Life Of Tire ........................ 301
▫ Replacement Tires .................... 301
 Tire Chains .......................... 302
 Tire Rotation Recommendations ........... 303
 Tire Pressure Monitor System (TPMS) ....... 304
▫ Base System ........................ 307
▫ Premium System – If Equipped .......... 309
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STARTING AND OPERATING 237

When additional traction is required, the 4WD LOW
position can be used to lock the front and rear driveshafts
together and force the front and rear wheels to rotate at
the same speed. The 4WD LOW position is intended for
loose, slippery road surfaces only. Driving in the 4WD
LOW position on dry, hard-surfaced roads may cause
increased tire wear and damage to driveline components.
When operating your vehicle in 4WD LOW, the engine
speed is approximately three times that of the 4WD HI
position at a given road speed. Take care not to overspeed
the engine and do not exceed 25 mph (40 km/h).
Proper operation of four-wheel drive vehicles depends
on tires of equal size, type, and circumference on each
wheel. Any difference will adversely affect shifting and
cause damage to the transfer case.
Because four-wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.WARNING!
You or others could be injured if you leave the
vehicle unattended with the transfer case in the N
(Neutral) position without first fully engaging the
parking brake. The transfer case N (Neutral) position
disengages both the front and rear driveshafts from
the powertrain and will allow the vehicle to move
regardless of the transmission position. The parking
brake should always be applied when the driver is
not in the vehicle.
254 STARTING AND OPERATING

Avoid abrupt downshifts on icy or slippery roads, be-
cause engine braking may cause skidding and loss of
control.
Hill Climbing
NOTE:Before attempting to climb a hill, determine the
conditions at the crest and/or on the other side.
Before climbing a steep hill, shift the transmission to a
lower gear and shift the transfer case to 4WD LOW. Use
first gear and 4WD LOW for very steep hills.
If you stall or begin to lose forward motion while
climbing a steep hill, allow your vehicle to come to a stop
and immediately apply the brakes. Restart the engine,
and shift into REVERSE. Back slowly down the hill,
allowing the compression braking of the engine to help
regulate your speed. If the brakes are required to control
vehicle speed, apply them lightly and avoid locking or
skidding the tires.
WARNING!
If the engine stalls, you lose forward motion, or
cannot make it to the top of a steep hill or grade,
never attempt to turn around. To do so may result in
tipping and rolling the vehicle. Always back care-
fully straight down a hill in REVERSE gear. Never
back down a hill in NEUTRAL using only the brake.
Remember, never drive diagonally across a hill always
drive straight up or down.
If the wheels start to slip as you approach the crest of a
hill, ease off the accelerator and maintain forward motion
by turning the front wheels slowly. This may provide a
fresh “bite” into the surface and will usually provide
traction to complete the climb.
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STARTING AND OPERATING 261