2009 JEEP COMMANDER tire pressure

a potentially sensitive nature, such as would identify a
particular driver, vehicle, or crash, will be treated confi-
dentially. Confidential data will not be disclosed by
Chrysler LLC to any third party except when:
1.
Used for research purposes, such as to match data with a
particular crash record in an aggregate database, provided
confidentiality of personal data is thereafter preserved.
2. Used in defense of litigation involving a Chrysler LLC
product.
3. Requested by police under a legal warrant.
4. Otherwise required by law.
Data parameters that may be recorded:
•Diagnostic trouble code(s) and warning lamp status
for electronically-controlled safety systems, including
the airbag system
•Airbag disable lamp status (if equipped)
•Timeof airbag deployment (in terms of ignition
cycles and vehicle mileage)
•Airbag deployment level (if applicable)
•Impact acceleration and angle
•Seat belt status
•Brake status (service and parking brakes)
•Accelerator status (including vehicle speed)
•Engine control status (including engine speed)
•Transmission gear selection
•Cruise control status
•Traction/stability control status
•Tire Pressure Monitoring System status
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 63
2

Safety Checks You Should Make Inside the
Vehicle
Seat Belts
Inspect the seat belt system periodically, checking for
cuts, frays and loose parts. Damaged parts must be
replaced immediately. Do not disassemble or modify the
system.
Seat belt assemblies must be replaced after an accident if
they have been damaged i.e., (bent retractor, torn web-
bing, etc.). If there is any question regarding belt or
retractor condition, replace the belt.
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 bulb is not lit during starting, have it
replaced. If the light stays on or comes on while driving,
have the system checked by an authorized dealer.
Defrosters
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.
Safety Checks You Should Make Outside the
Vehicle
Tires
Examine tires for excessive tread wear or uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread. Inspect for tread cuts or sidewall
cracks. Check wheel nuts for tightness. Check the tires
(including spare) for proper pressure.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 75
2

12. Tire Pressure Monitoring Telltale Light
Each tire, including the spare (if provided),
should be checked monthly, when cold and in-
flated 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 alsoreduces 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
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
UNDERSTANDING YOUR INSTRUMENT PANEL 195
4

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.
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 “H”
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 on
the “H” and you hear continuous chimes, turn the
engine off immediately, and call an authorized deal-
ership for service.
196 UNDERSTANDING YOUR INSTRUMENT PANEL

•DRIVER 1 MEMORY
•DRIVER 2 MEMORY
•ADJ. PEDALS DISABLED — CRUISE CONTROL SET
•ADJ. PEDALS DISABLED — SHIFTER IN REVERSE
•LOW TIRE PRESSURE
•CHECK TPM SYSTEM
•LEFT FRONT LOW PRESSURE (Premium TPM Sys-
tem Only)
•RIGHT FRONT LOW PRESSURE (Premium TPM Sys-
tem Only)
•LEFT REAR LOW PRESSURE (Premium TPM System
Only)
•RIGHT REAR LOW PRESSURE (Premium TPM Sys-
tem Only)
•SPARE LOW PRESSURE (Premium TPM System
Only)
•UNLOCK TO OPERATE (Power Liftgate Models
Only)
•PUT IN PARK TO OPERATE (Power Liftgate Models
Only)
•FUNCTION DISABLED (Power Liftgate Models Only)
•CLOSE LIFTGLASS (Power Liftgate Models Only)
•OBSTACLE DETECTED (Power Liftgate Models Only)
•MANUAL CLOSE TO OPERATE (Power Liftgate
Models Only)
•SERVICE KEYLESS SYS
•KEY FOB NOT DETECTED
•VEHICLE NOT IN PARK
204 UNDERSTANDING YOUR INSTRUMENT PANEL

•Tire Pressure Monitor System (Shows the current
pressure of all four road tires.) For additional informa-
tion, refer to “Tire Pressure Monitor System” in Sec-
tion 5 of this manual.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 “Tire Inflation Pressures” in Section 5 for additional
information.
•Your system can be set to display pressure units in PSI,
kPa, or BAR.
Tire Pressure Display
UNDERSTANDING YOUR INSTRUMENT PANEL 217
4

▫HSA (Hill Start Assist) (4WD Models With
NV245 Two–Speed Transfer Case Only)..... 332
▫HDC (Hill Descent Control) (4WD Models
With NV245 Two–Speed
Transfer Case Only)................... 334
▫ESP/BAS Warning Light And ESP/TCS
Indicator Light...................... 336
Tire Safety Information.................. 337
▫Tire Markings....................... 337
▫Tire Identification Number (TIN).......... 341
▫Tire Loading And Tire Pressure........... 342
Tires — General Information.............. 346
▫Tire Pressure........................ 346
▫Tire Inflation Pressures................. 347▫Tire Pressures For High Speed Operation.... 348
▫Radial-Ply Tires...................... 349
▫Compact Spare Tire — If Equipped........ 349
▫Limited-Use Spare — If Equipped......... 350
▫Tire Spinning....................... 351
▫Tread Wear Indicators................. 352
▫Life Of Tire......................... 352
▫Replacement Tires.................... 353
Tire Chains.......................... 354
Tire Rotation Recommendations............ 355
Tire Pressure Monitor System (TPMS)....... 356
▫Base System........................ 359
▫Premium System — If Equipped.......... 361
STARTING AND OPERATING 289
5

WARNING! (Continued)
•Be sure the parking brake is fully disengaged
before driving, failure to do so can lead to brake
problems due to excessive heating of the rear
brakes.
When parking on a hill, turn the front wheels toward the
curb on a downhill grade, and away from the curb on an
uphill grade.
The parking brake should always be applied whenever
the driver is not in the vehicle.
ANTI-LOCK BRAKE SYSTEM
The Anti-Lock Brake System (ABS) is designed to aid the
driver in maintaining vehicle control under adverse
braking conditions. The system operates with a separatecomputer to modulate hydraulic pressure, to prevent
wheel lock-up and help avoid skidding on slippery
surfaces.
All vehicle wheels and tires must be the same size and
type, and tires must be properly inflated, to produce
accurate signals for the computer.
WARNING!
Significant over or under-inflation of tires or mixing
sizes of tires or wheels on the vehicle can lead to loss
of braking effectiveness.
The ABS conducts a low-speed self-test at about 12 mph
(20 km/h). If you have your foot lightly on the brake
while this test is occurring, you may feel slight pedal
movement. The movement can be more apparent on ice
and snow. This is normal.
320 STARTING AND OPERATING