2008 JEEP PATRIOT service schedule

U.S. Federal regulations require that upon transfer of
vehicle ownership, the seller certify to the purchaser the
correct mileage that the vehicle has been driven. There-
fore, if the odometer reading is changed during repair or
replacement, be sure to keep a record of the reading
before and after the service so that the correct mileage can
be determined.
Change Oil Message
Your vehicle is equipped with an engine oil change
indicator system. The “Change Oil” message will flash in
the instrument cluster odometer for approximately 12
seconds after a single chime has sounded to indicate the
next scheduled oil change interval. The engine oil change
indicator system is duty cycle based, which means the
engine oil change interval may fluctuate dependent upon
your personal driving style. Unless reset, this message
will continue to display each time you turn the ignition
switch to the ON/RUN position. To turn off the messagetemporarily, press and release the Trip Odometer button
on the instrument cluster. To reset the oil change indica-
tor system (after performing the scheduled maintenance)
refer to the following procedure.
1. Turn the ignition switch to the ON position.Do not
start the engine.
2. Fully depress the accelerator pedal slowly three
times within 10 seconds.
3. Turn the ignition switch to the OFF/LOCK position.
NOTE:If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary repeat this procedure.
25. OFF ROAD Indicator Light — If Equipped
The symbol illuminates (is armed) when the 4WD lock
switch is activated and the transmission range indicator
is in LOW or REVERSE position.
180 UNDERSTANDING YOUR INSTRUMENT PANEL

MAX A/C
For maximum cooling select the
air direction to either the Panel or
Bi-Level position using the mode
control. Press the A/C button and
the recirculation button so that
both lamps are illuminated and
set the temperature control to its
coolest setting.
NOTE:
•Recirculation Mode will not operate in floor, mix or
defrost modes.
•See “Circulation Control” in this section, for proper or
extended use of this position.
Air Filtration System — If Equipped
An air filter is included in the optional Security Group.
Filter media includes a particle filtration layer and a
charcoal layer. The filter will reduce, but not eliminate,
diesel and agricultural smells. The filter acts only on air
coming from outside the vehicle; it does not filter air
inside the passenger compartment. See the maintenance
schedule for the filter change interval. The air filter
change interval coincides with engine oil and filter
change intervals. As with oil changes, the interval is
shorter for heavy duty service or dusty conditions. See
your authorized dealer for service.
UNDERSTANDING YOUR INSTRUMENT PANEL 231
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5. Approximately 15 seconds later, one of two things will
happen:
a. The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn OFF
the ignition key or start the engine. This means that the
vehicle’s OBD II system isnot readyand you should
notproceed to the I/M station.
b. The MIL will not flash at all and will remain fully
illuminated until you turn OFF the ignition key or start
the engine. This means that the vehicle’s OBD II
system isready,and you can proceed to the I/M
station.
If the OBD II system isnot ready,you should see an
authorized dealer or repair facility. If this vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive the vehicleas you normally would in order for the OBD II system to
update. A recheck with the above test routine may then
indicate that the system is now ready.
Regardless of whether the vehicle’s OBD II system is
ready or not ready, if the MIL is illuminated during
normal vehicle operation, you should have the vehicle
serviced before going to the I/M station. The I/M station
can fail the vehicle because the MIL is on with the engine
running.
REPLACEMENT PARTS
The use of genuine Moparparts for normal/scheduled
maintenance and repairs is highly recommended to en-
sure the designed performance. Damage or failures
caused by the use of non-Moparparts for maintenance
and repairs will not be covered by the manufacturer’s
warranty.
MAINTAINING YOUR VEHICLE 351
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To minimize the possibility of catalyst damage:
•Do not shut off the engine or interrupt the ignition
when the transaxle is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected for a prolonged period.
Crankcase Emission Control System
Proper operation of this system depends on freedom
from sticking or plugging due to deposits. As vehicle
mileage builds up, the PCV valve and passages may
accumulate deposits. If a valve is not working properly,replace it with a new valve.Do not attempt to clean the
old PCV valve.
Check the ventilation hose for indication of damage or
plugging deposits. Replace if necessary.
Fuel Filter
A plugged fuel filter can cause hard starting or limit the
speed at which a vehicle can be driven. Should an
excessive amount of dirt accumulate in the fuel tank,
frequent fuel filter replacement may be necessary. The
fuel filters are located inside the fuel tank. See your
authorized dealer for service.
Air Cleaner Element (Filter)
Refer to “Maintenance Schedule” under Section 8.
358 MAINTAINING YOUR VEHICLE

EMISSIONS CONTROL SYSTEM MAINTENANCE
The Scheduled Maintenance services listed inbold type,
must be done at the times or mileages specified to ensure
the continued proper functioning of the Emissions Con-
trol System. These, and all other maintenance services
included in this manual, should be done to provide best
vehicle performance and reliability. More frequent main-
tenance may be needed for vehicles in severe operating
conditions, such as dusty areas and very short trip
driving.
Inspection and service should also be done anytime a
malfunction is suspected.
NOTE:Maintenance, replacement, or repair of the emis-
sions control devices and systems on your vehicle may be
performed by any automotive repair establishment or
individual using any automotive part that has been
certified pursuant to U.S. EPA or in the State of Califor-
nia, California Air Resources Board regulations.
MAINTENANCE SCHEDULE
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
On Electronic Vehicle Information Center (EVIC)
equipped vehicles, “Oil Change Required” will be dis-
played in the EVIC and a single chime will sound,
indicating that an oil change is necessary.
On Non-EVIC equipped vehicles, “Change Oil” will flash
in the instrument cluster odometer and a single chime
will sound, indicating that an oil change is necessary.
Based on engine operation condition, the oil change
indicator message will illuminate; this means that service
is required for your vehicle. Have your vehicle serviced
as soon as possible, within the next 500 mi (805 km).
400 MAINTENANCE SCHEDULES
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Perform Maintenance Every(Where time and mile-
age are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Change the manual transmission fluid if using your vehicle
for any of the following: trailer towing, snow plowing,
heavy loading, taxi, police, delivery service (commercial
service), off-road, desert operation or more then 50% of
your driving is at sustained high speeds during hot
weather, above 90°F (32°C).48,000 80 000 48
Change Rear Drive Assembly (RDA) fluid. 60,000 100 000 60
Change Power Transfer Unit (PTU) fluid. 60,000 100 000 60
Change the automatic transmission fluid and filter if using
your vehicle for any of the following: police, taxi, fleet or
frequent trailer towing.60,000 100 000 60
Inspect and replace PCV valve if necessary.† 90,000 150 000 90
Flush and replace the engine coolant. 102,000 170 000 60
Change the automatic transmission fluid and filter. 120,000 200 000 120
Replace Accessory Drive Belt(s). 120,000 200 000 120
404 MAINTENANCE SCHEDULES
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† This maintenance is recommended by the manufacturer
to the owner, but is not required to maintain emissions
warranty.
WARNING!
You can be badly injured working on or around a
motor vehicle. Do only that service work for which
you have the knowledge and the right equipment. If
you have any doubt about your ability to perform a
service job, take your vehicle to a competent
mechanic.
MAINTENANCE SCHEDULES 405
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Safety Checks Inside Vehicle................. 70
Safety Checks Outside Vehicle............... 71
Safety Defects, Reporting.................. 413
Safety Information, Tire................... 283
Safety Tips............................. 69
Satellite Radio.......................217,220
Satellite Radio Antenna................... 223
Schedule, Maintenance.................... 400
Seat Belt Maintenance.................... 381
Seat Belt Reminder....................... 46
Seat Belts.............................. 35
Adjustable Shoulder Belt.................. 41
Adjustable Upper Shoulder Anchorage........ 41
And Pregnant Women................... 48
Child Restraint......................... 60
Extender............................. 47
Front Seat............................ 36
Pretensioners.......................... 45
Rear Seat............................. 36Reminder............................ 174
Seats................................. 109
Adjustment.......................... 109
Cleaning............................ 378
Head Restraints....................... 113
Heated.............................. 114
Lumbar Support....................... 111
Rear Folding......................... 116
Rear Folding (Sedan).................... 116
Seatback Release....................... 112
Tilting .............................. 112
Security Alarm (Theft Alarm)................ 18
Selection of Oil......................... 354
Sentry Key (Immobilizer)................. 15,19
Sentry Key Programming................... 17
Sentry Key Replacement................... 16
Service Assistance....................... 409
Service Contract......................... 411
Service Manuals........................ 414
430 INDEX