2011 JEEP GRAND CHEROKEE flat tire

11. Tire Pressure Monitoring Telltale LightEach tire, including the spare (if
provided), should be checked
monthly, when cold and inflated to
the inflation pressure recom-
mended by the vehicle manufac-
turer 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 pres-
sure telltale when one or more of your tires is
significantly under-inflated. Accordingly, when
the low tire pressure telltale illuminates, you
should stop and check your tires as soon as
possible, and inflate them to the proper pres-
sure. 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 will flash for approxi-
mately one minute and then remain continu-
ously illuminated. This sequence will continue
upon subsequent vehicle 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
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 thereplacement 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 operation or sensor damage may re-
sult when using replacement equipment that
is not of the same size, type, and/or style.
Aftermarket wheels can cause sensor dam-
age. 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.
12. Position Light Indicator — If Equipped This indicator will illuminate when
the park lights or headlights are
turned on.
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NOTE:
•Tires heat up during normal driving con-
ditions. Heat will cause the tire pressure
to increase from 2 to 6 psi (14 to 41 kPa)
during normal driving conditions. Refer to
“Tires-General Information/Tire Inflation
Pressures” in “Starting And Operating”
for additional information.
• Your system can be set to display pres-
sure units in PSI, kPa, or BAR.
Keyless Enter-N-Go Display —
If Equipped
When the ENGINE START/STOP button is
pressed to change ignition switch positions, the
Keyless Enter-N-Go icon momentarily appears
in the lower right corner of the EVIC display
showing the new ignition switch position.
Refer to “Keyless Enter-N-Go” in “Starting And
Operating” for more information. NOTE:
Under certain conditions, the display may
be superseded by another display of higher
priority. But when the ignition switch posi-
tion is changed, the display always re-
appears.
Compass / Temperature DisplayThe compass readings indicate the direction
the vehicle is facing. The EVIC will display one
of eight compass readings and the outside
temperature.
NOTE:
The system will display the last known out-
side temperature when starting the vehicle
and may need to be driven several minutes
before the updated temperature is dis-
played. Engine temperature can also affect
the displayed temperature, therefore tem-
perature readings are not updated when the
vehicle is not moving.Automatic Compass Calibration
This compass is self-calibrating, which elimi-
nates the need to manually reset the compass.
When the vehicle is new, the compass may
appear erratic and the EVIC will display CAL
until the compass is calibrated. You may also
calibrate the compass by completing one or
more 360–degree turns (in an area free from
large metal or metallic objects) until the CAL
indicator displayed in the EVIC turns off. The
compass will now function normally.
NOTE:
A good calibration requires a level surface
and an environment free from large metallic
objects such as buildings, bridges, under-
ground cables, railroad tracks, etc.
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•TIRES — GENERAL INFORMATION ............... 230
• Tire Pressure .......................... 230
• Tire Inflation Pressures .................... 230
• High Speed Operation ..................... 231
• Radial-Ply Tires ......................... 231
• Tire Spinning .......................... 231
• Tire Chains ............................ 231
• Treadwear Indicators ...................... 232
• Life of Tire ............................ 232
• Replacement Tires ....................... 233
• Directional Tread Pattern Tires – If Equipped ........ 233
• TIRE ROTATION RECOMMENDATIONS ............. 234
• Non-Directional Tires Only .................. 234
• TIRE PRESSURE MONITOR SYSTEM (TPMS) .......... 234
• Base System ........................... 236
• Premium System – If Equipped ................ 237
• TPMS Deactivation ....................... 239
• General Information ...................... 239
• FUEL REQUIREMENTS — GASOLINE ENGINE ......... 240
• 3.6L Engine ........................... 240
• 5.7L Engine ........................... 240
• FUEL REQUIREMENTS — DIESEL ENGINE ........... 242
198

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 en-
gaging 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.
Shift Positions
For additional information on the appropriate
use of each transfer case mode position, see
the information below:
4WD AUTO
This range is used on surfaces such as ice,
snow, gravel, sand, and dry hard pavement.NOTE:
Refer to “Selec-Terrain
– If Equipped” in
“Starting and Operating” for further infor-
mation on the various positions and their
intended usages.
NEUTRAL
This range disengages both the front and rear
driveshafts from the powertrain. It is to be used
for flat towing behind another vehicle. Refer to
“Recreational Towing” in “Starting and Operat-
ing” for further information.
4WD LOW
This range is for low speed four-wheel drive. It
locks the front and rear driveshafts together
and forces the front and rear wheels to rotate at
the same speed. It provides additional traction
and maximum pulling power for loose, slippery
road surfaces only. Do not exceed 25 mph
(40 km/h).
NOTE:
Refer to “Selec-Terrain – If Equipped” for
further information on the various positions
and their intended usages.
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•The ESC system will make buzzing or
clicking sounds when it is active. This is
normal; the sounds will stop when ESC
becomes inactive following the maneuver
that caused the ESC activation.
The “ESC OFF Indicator Light” in-
dicates the Electronic Stability
Control (ESC) is off.
TIRES — GENERAL INFORMATION
Tire Pressure
Proper tire inflation pressure is essential to the
safe and satisfactory operation of your vehicle.
Three primary areas are affected by improper
tire pressure:
Safety
WARNING!
•Improperly inflated tires are dangerous and
can cause accidents.
(Continued)
WARNING!(Continued)
• Under-inflation increases tire flexing and
can result in tire failure.
• Over-inflation reduces a tire’s ability to
cushion shock. Objects on the road and
chuck holes can cause damage that results
in tire failure.
• Unequal tire pressures can cause steering
problems. You could lose control of your
vehicle.
• Over-inflated or under-inflated tires can af-
fect vehicle handling and can fail suddenly,
resulting in loss of vehicle control.
Always drive with each tire inflated to the
recommended pressure.
Economy
Improper inflation pressures can cause uneven
wear patterns to develop across the tire tread.
These abnormal wear patterns will reduce
tread life resulting in a need for earlier tire
replacement. Under-inflation also increases tire
rolling resistance and results in higher fuel
consumption. Ride Comfort and Vehicle Stability
Proper tire inflation contributes to a comfortable
ride. Over-inflation produces a jarring and un-
comfortable ride. Both under-inflation and over-
inflation affect the stability of the vehicle and
can produce a feeling of sluggish response or
over responsiveness in the steering.
Unequal tire pressures can cause erratic and
unpredictable steering response.
Unequal tire pressure from side to side may
cause the vehicle to drift left or right.
Tire Inflation PressuresThe proper cold tire inflation pressure for pas-
senger cars is listed on either the face of the
driver’s door or the driver’s side “B” pillar. For
vehicles other than passenger cars, the cold
tire inflation pressures are listed on the driver’s
side “B” pillar, glove box door, or the Certifica-
tion Label.
The tire pressure should be checked and ad-
justed at least once every month. Check more
often if subject to a wide range of outdoor
temperatures, as tire pressures vary with tem-
perature changes.
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Inflation pressures specified on the chart are
always “Cold Inflation Pressure.” Cold inflation
pressure is defined as the tire pressure after the
vehicle has been idle for at least three hours, or
driven less than a mile (1.6 km) after a three-
hour period. The cold inflation pressure must
not exceed the maximum values molded into
the tire sidewall.
Tire pressures may increase from 2 to 6 psi
(0.14 to 0.41 bar) [14 to 41 kPa] during opera-
tion. DO NOT reduce this normal pressure
buildup.
High Speed OperationThe manufacturer advocates driving at safe
speeds within posted speed limits. Where
speed limits or conditions are such that the
vehicle can be driven at high speeds, correct
tire inflation pressure is very important.
Radial-Ply Tires
WARNING!
Combining radial ply tires with other types of
tires on your vehicle will cause your vehicle to
handle poorly. The instability could cause an
accident. Always use radial tires in sets of
four. Never combine them with other types of
tires.
Cuts and punctures in radial tires are repairable
only in the tread area because of sidewall
flexing. Consult your dealer for radial tire re-
pairs.
Tire SpinningWhen stuck in mud, sand, snow, or ice condi-
tions, do not spin your vehicle’s wheels above
30 mph (48 km/h).
WARNING!
Fast spinning tires can be dangerous. Forces
generated by excessive wheel speeds may
cause tire damage or failure. A tire could
explode and injure someone. Do not spin your
vehicle’s wheels faster than 30 mph (48 km/h)
when you are stuck, and do not let anyone
near a spinning wheel, no matter what the
speed.
Tire ChainsUse of traction devices require sufficient tire-to-
body clearance. Follow these recommenda-
tions to guard against damage.
• Install on Rear Tires Only
• Due to limited clearance, use SAE class “S”
low profile cables or traction devices only.
Security Chain Company (SCC) Super Z6
#SZ 441 cables or equivalent are recom-
mended.
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WARNING!
Tires and the spare tire should be replaced
after six years, regardless of the remaining
tread. Failure to follow this warning can result
in sudden tire failure. You could lose control
and have an accident resulting in serious
injury or death.
Keep unmounted tires in a cool, dry place with
as little exposure to light as possible. Protect
tires from contact with oil, grease and gasoline.
Replacement TiresThe tires on your new vehicle provide a balance
of many characteristics. They should be in-
spected regularly for wear and correct inflation
pressure. The manufacturer strongly recom-
mends that you use tires equivalent to the
originals in quality and performance when re-
placement is needed (see section on tread
wear indicators). Failure to use equivalent re-
placement tires may adversely affect the safety,
handling and ride of your vehicle. We recom-
mend that you contact your local authorized
dealer on any questions you may have on tire
specifications or capability.
WARNING!
• Do not use a tire, wheel size or rating other
than that specified for your vehicle. Some
combinations of unapproved tires and
wheels may change suspension dimen-
sions and performance characteristics, re-
sulting in changes to steering, handling,
and stress to steering and suspension
components. You could lose control and
have an accident resulting in serious injury
or death. Use only the tire and wheel sizes
with load ratings approved for your vehicle.
• Never use a tire smaller than the minimum
tire size listed on your vehicle’s tire placard
unless explicitly instructed to do so by the
vehicle manufacturer (reference tire chain
information in this manual). Using an
under-sized tire could result in tire over-
loading and failure.
•
Failure to equip your vehicle with tires having
adequate speed capability can result in sud-
den tire failure and loss of vehicle control.
(Continued)
WARNING! (Continued)
• Overloading your tires is dangerous. Like
under-inflation, overloading can cause tire
failure. Use tires of the recommended load
capacity for your vehicle — never overload
them.
CAUTION!
Replacing original tires with tires of a different
size may result in false speedometer and
odometer readings. This can also affect ve-
hicle performance and can do potential dam-
age to the driveline. Check with your dealer
before replacing tires with a different size.
Directional Tread Pattern Tires –
If Equipped
Your vehicle may be equipped with tires using
a directional tread pattern. These tires are
designed to optimize dry handling as well as
wet performance. To obtain the full benefits of
this design, the tires must be installed so that
they rotate in the correct direction. The rotation
direction of this type of tire is indicated by
233

arrows on the side wall of the tire. The full size
spare tire is mounted as a direct replacement
for the right side of the vehicle. For a flat tire on
the left side of the vehicle, the full size spare
can be used as mounted. If this is required,
correct the rotation as soon as possible to
restore optimum wet performance.
TIRE ROTATION
RECOMMENDATIONS
Non-Directional Tires Only
Tires on the front and rear axles of vehicles
operate at different loads and perform different
steering, handling, and braking functions. For
these reasons, they wear at unequal rates.
These effects can be reduced by timely rotation
of tires. The benefits of rotation are especially
worthwhile with aggressive tread designs such
as those on On/Off-Road type tires. Rotation
will increase tread life, help to maintain mud,
snow, and wet traction levels, and contribute to
a smooth, quiet ride.Refer to the “Maintenance Schedule” for the
proper maintenance intervals. More frequent
rotation is permissible if desired. The reasons
for any rapid or unusual wear should be cor-
rected prior to rotation being performed.
NOTE:
The premium Tire Pressure Monitor System
will automatically locate the pressure values
displayed in the correct vehicle position
following a tire rotation.
The suggested rotation method is the “forward-
cross” shown in the following diagram.
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 tire pressure.
The tire pressure will vary with temperature by
about 1 psi (7 kPa) for every 12°F (–11°C). This
means that when the outside temperature de-
creases, 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 the vehicle has not been driven
for at least three hours, or driven less than
1 mile (1.6 km) after a three-hour period.
Refer
to “Tires – General Information” in “Starting
and Operating” 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 reason,
including low temperature effects, or natural
pressure loss through the tire.
Tire Rotation
234