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 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.
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as it was before the repair or service. If s/he cannot do so,
then the odometer must be set at zero, and a sticker must
be placed in the door jamb stating what the mileage was
before the repair or service. It is a good idea for you to
make a record of the odometer reading before the repair/
service, so that you can be sure that it is properly reset, or
that the door jamb sticker is accurate if the odometer
must be reset at zero.
When the appropriate conditions exist, this display
shows the Electronic Vehicle Information Center (EVIC)
messages. Refer to “Electronic Vehicle Information Cen-
ter”.
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 recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your vehiclehas 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
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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
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 moretires 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.
288 UNDERSTANDING YOUR INSTRUMENT PANEL

BACK Button
Press the BACK button to scroll back to a
previous menu or sub-menu.
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
•Sport Mode Active
•Service TPM System (refer to “Tire Pressure Monitor-
ing System” in “Starting And Operating”)
•Premium TPM System Graphic Display
•Service Keyless System (refer to Keyless Enter-N-Go,
Passive Entry - if equipped)
•Service Park Assist System
•Park Assist System Blinded
•Park Assist Disabled
•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
•Low Tire Pressure
•ESC System Off
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•Trans Temperature
Displays the actual transmission temperature.
•Engine Hours
Displays the number of hours of engine operation.
Tire PSI
Press and release the UP or DOWN button until “Tire
PSI” displays highlighted in the EVIC and press the
SELECT button. Press and release the UP/DOWN but-
tons 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”.
Tire Pressure Display
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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. Refer
to “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.
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 Operat-
ing” for more information.NOTE:Under certain conditions, the display may be
superseded by another display of higher priority. But
when the ignition switch position is changed, the display
always re-appears.
Compass / Temperature Display
The 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 outside
temperature when starting the vehicle and may need to
be driven several minutes before the updated tempera-
ture is displayed. Engine temperature can also affect the
displayed temperature; therefore, temperature readings
are not updated when the vehicle is not moving.
Automatic Compass Calibration
This compass is self-calibrating, which eliminates the
need to manually reset the compass. When the vehicle is
new, the compass may appear erratic and the EVIC will
314 UNDERSTANDING YOUR INSTRUMENT PANEL

Driving Through Water................. 394
▫Flowing/Rising Water................. 394
Power Steering....................... 396
Parking Brake........................ 397
Electronic Brake Control System........... 400
▫Anti-Lock Brake System (ABS)........... 400
▫Traction Control System (TCS)........... 400
▫Brake Assist System (BAS).............. 401
▫Electronic Roll Mitigation (ERM)......... 402
▫Electronic Stability Control (ESC)......... 402
▫Trailer Sway Control (TSC)............. 406
▫ESC Activation/Malfunction Indicator Light
And ESC Off Indicator Light............ 407Tire Safety Information................. 408
▫Tire Markings....................... 408
▫Tire Identification Number (TIN)......... 412
▫Tire Terminology And Definitions......... 413
▫Tire Loading And Tire Pressure.......... 414
Tires — General Information............. 418
▫Tire Pressure....................... 418
▫Tire Inflation Pressures................ 419
▫Tire Pressures For High Speed Operation . . . 420
▫Radial-Ply Tires..................... 421
▫Spare Tire Matching Original Equipped Tire
And Wheel – If Equipped.............. 421
▫Compact Spare Tire – If Equipped........ 422
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▫Full Size Spare – If Equipped............ 423
▫Limited-Use Spare – If Equipped......... 423
▫TireSpinning ....................... 424
▫Tread Wear Indicators................. 424
▫LifeOfTire ........................ 425
▫Replacement Tires.................... 426
Tire Rotation Recommendations........... 427
Tire Pressure Monitor System (TPMS)....... 428
▫Premium System.................... 431
▫General Information.................. 435
Fuel Requirements..................... 435
▫6.4L Engine........................ 435
▫Reformulated Gasoline................ 436▫Gasoline/Oxygenate Blends............. 436
▫E-85 Usage In Non-Flex Fuel Vehicles...... 437
▫MMT In Gasoline.................... 437
▫Materials Added To Fuel............... 438
▫Fuel System Cautions................. 438
▫Carbon Monoxide Warnings............ 439
Adding Fuel......................... 440
▫Fuel Filler Cap (Gas Cap).............. 440
▫Loose Fuel Filler Cap Message........... 443
Vehicle Loading...................... 443
▫Certification Label................... 443
TrailerTowing ........................ 446
▫Common Towing Definitions............ 446
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