2012 JEEP GRAND CHEROKEE tire pressure

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 objects lodged in the tread or
sidewall. Inspect the tread for cuts and cracks.
Inspect sidewalls for cuts, cracks and bulges.
Check the wheel nuts for tightness. Check the
tires (including spare) for proper cold inflation
pressure.Lights
Have someone observe the operation of exte-
rior 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 lock-
ing.
Fluid Leaks
Check area under vehicle after overnight park-
ing 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.
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than 30 mph (48 km/h), see your authorized
dealer as soon as possible to have the problem
diagnosed and corrected.
NOTE:
•The “ESC Off Indicator Light” and the
“ESC Activation/Malfunction Indicator
Light” come on momentarily each time
the ignition switch is turned to ON/RUN.
• Each time the ignition is turned to ON/
RUN, the ESC system will be ON, even if it
was turned off previously.
• 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.
5. TOW/HAUL Indicator Light — If
Equipped This light will illuminate when the
TOW/HAUL button has been se-
lected. The TOW/HAUL button is
located in the center of the instru-
ment panel (below the climate
controls). 6. Turn Signal Indicator
The arrows will flash with the exterior turn
signals when the turn signal lever is op-
erated. A tone will chime, and an EVIC
message will appear if the turn signals are left
on for more than 1 mile (1.6 km).
NOTE:
Check for an inoperative outside light bulb if
either indicator flashes at a rapid rate.
7. High Beam Indicator Indicates that headlights are on high
beam.
8. Front Fog Light Indicator — If Equipped This indicator will illuminate when the
front fog lights are on.
9. Hill Descent Control Indicator Light — If
Equipped The symbol indicates the status of
the Hill Decent Control (HDC) fea-
ture. 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 lamp will flash on/off.
10. Electronic Vehicle Information Center
(EVIC) Display/Odometer Display
The odometer display shows the total distance
the vehicle has been driven.
When the appropriate conditions exist, this
display shows the Electronic Vehicle Informa-
tion Center (EVIC) messages. Refer to “Elec-
tronic Vehicle Information Center”.
11. Tire Pressure Monitoring Telltale Light
Each 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.)
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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 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 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. Park/Headlight ON Indicator — If
Equipped This indicator will illuminate when
the park lights or headlights are
turned on.
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Electronic Vehicle Information
Center (EVIC) Displays
When the appropriate conditions exist, the
EVIC displays the following messages:
•Vehicle Not In Park
• Key Left Vehicle
• Key Not Detected
• Service Keyless System
• Service Tire Pressure System
• Service Park Assist System
• Park Assist System Blinded
• Park Assist Disabled
• Front Sensor Blinded
• Rear Sensor Blinded
• Keyfob Battery Low
• Liftglass Open
• Left Front Turn Signal Lamp Out
• Right Front Turn Signal Lamp Out
• Left Rear Turn Signal Lamp Out •
Right Rear Turn Signal Lamp Out
• Check Tire Pressure
• ESC System Off
• Service Blind Spot System
• Blind Spot Detection Unavailable
• Blind Spot System Off
• Blind Spot System Unavailable Sensor
Blocked
• Blind Spot System Unavailable Astronomy
Zone — When the Blind Spot Module senses
a tower on the same frequency that it is
interfering with, it will automatically turn the
Blind Spot System off.
• Normal Cruise Ready — When Adaptive
Cruise Control (ACC) system is turned off
and Normal (Fixed Speed) Cruise Control
mode is available. Refer to “Adaptive Cruise
Control (ACC)” in “Understanding The Fea-
tures Of Your Vehicle” (if equipped).
• Adaptive Cruise Off — When the Adaptive
Cruise Control (ACC) system is turned off. Refer to “Adaptive Cruise Control (ACC)” in
“Understanding The Features Of Your Ve-
hicle” (if equipped).
• ACC Ready — When the ACC system is
activated. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• ACC Set — After setting the desired speed
in the ACC system. Refer to “Adaptive Cruise
Control (ACC)” in “Understanding The Fea-
tures Of Your Vehicle” (if equipped).
• ACC Cancelled — To disable the ACC sys-
tem. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• Sensed Vehicle Indicator — The system de-
tects a slower moving vehicle in the same
lane. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• Driver Override — If you apply the accelera-
tor after setting the desired speed in the
ACC system. Refer to “Adaptive Cruise Con-
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Elapsed Time
Shows the total elapsed time of travel since the
last reset when the ignition switch is in the ACC
position. Elapsed time will increment when the
ignition switch is in the ON or START position.
To Reset The Display
Reset will only occur while a resettable function
is being displayed. Press and release the SE-
LECT button once to clear the resettable func-
tion being displayed.
UnitsPress and release the UP or DOWN button until
“Units” displays highlighted in the EVIC and
press the SELECT button. The EVIC, odometer,
and navigation system (if equipped) can be
changed between English and Metric units of
measure. To make your selection, scroll up or
down until the preferred setting is highlighted,
then press and release the SELECT button until
a check-mark appears next to the setting,
showing that the setting has been selected.
Vehicle Info
(Customer Information Features)
Press and release the UP or DOWN button until
“Vehicle Info” displays highlighted in the EVIC
and press the SELECT button. Press the UP
and DOWN button to scroll through the avail-
able information displays, then press SELECT
to display any one of the following choices.
•Oil Temp (If Equipped)
Displays the actual oil temperature.
• Oil Pressure (If Equipped)
Displays the actual oil pressure.
• Coolant Temp
Displays the actual coolant temperature.
• Trans Temperature
Displays the actual transmission temperature
when the shift lever is in the Drive position. •
Engine Hours
Displays the number of hours of engine opera-
tion.
Tire PSI or Tire KPA
Press and release the UP or DOWN button until
“Tire PSI” or “Tire KPA” displays highlighted in
the EVIC and press the SELECT button. Press
and release the UP/DOWN buttons until one of
the following System Status messages displays
in the EVIC:
• System OK
• System Warnings Displayed (will display all
currently active System Warnings)
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•Tire Pressure Monitor System (shows the
current pressure of all four road tires). For
additional information, refer to “Tire Pressure
Monitor System” in “Starting And Operating”. 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.
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 pri-
ority. But when the ignition switch position 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.
Tire Pressure Display
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•TIRES — GENERAL INFORMATION ............... 252
• Tire Pressure .......................... 252
• Tire Inflation Pressures .................... 253
• High Speed Operation ..................... 253
• Radial-Ply Tires ......................... 253
• Limited-Use Spare – If Equipped ............... 253
• Tire Spinning .......................... 253
• Tire Chains ............................ 254
• Treadwear Indicators ...................... 254
• Life Of Tire ............................ 255
• Replacement Tires ....................... 255
• Directional Tread Pattern Tires – If Equipped ........ 256
• TIRE ROTATION RECOMMENDATIONS ............. 256
• Non-Directional Tires Only .................. 256
• TIRE PRESSURE MONITOR SYSTEM (TPMS) .......... 257
• Base System ........................... 258
• Premium System – If Equipped ................ 259
• TPMS Deactivation ....................... 261
• General Information ...................... 262
• FUEL REQUIREMENTS — GASOLINE ENGINE ......... 262
• 3.6L Engine ........................... 262
• 5.7L Engine ........................... 262
214

•Each time the ignition is turned ON, the
ESC system will be ON even if it was
turned off previously.
• 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.
• 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.
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