2009 JEEP GRAND CHEROKEE oil pressure

ENGINE COMPARTMENT – 5.7L
1 — Engine Coolant Reservoir 7 — Washer Fluid Reservoir
2 — Automatic Transmission Dipstick 8 — Engine Oil Dipstick
3 — Power Distribution Center 9 — Engine Oil Fill
4 — Brake Fluid Reservoir 10 — Coolant Pressure Cap
5 — Integrated Power Module 11 — Air Cleaner Filter
6 — Battery 408 MAINTAINING YOUR VEHICLE

operate satisfactorily without periodic maintenance.
However, if a malfunction of these items does occur, it
could adversely affect the engine or vehicle performance.
These items should be inspected if a malfunction is
observed or suspected.
Engine Oil
Checking Oil Level
To assure proper engine lubrication, the engine oil must
be maintained at the correct level. Check the oil level at
regular intervals, such as every fuel stop. The best time to
check the engine oil level is about five minutes after a
fully warmed engine is shut off, or before starting the
engine after it has sat overnight.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Maintain
the oil level in the SAFE level range. Adding 1 U.S. Quart(0.95L) of oil when the level is at the bottom of the SAFE
range will result in the level being at the top of the SAFE
range.
CAUTION!
Overfilling or underfilling the crankcase will cause
aeration or loss of oil pressure. This could damage
your engine.
3.0L Diesel Engine Only
Before checking the engine oil level, turn the engine off
and wait 15 minutes to allow for the oil to return to the oil
pan.
Change Engine Oil
Refer to the “Maintenance Schedule” in Section 8 for
proper maintenance intervals.
414 MAINTAINING YOUR VEHICLE

WARNING! (Continued)
•The air conditioning system contains refrigerant
under high pressure. To avoid risk of personal
injury or damage to the system, adding refrigerant
or any repair requiring lines to be disconnected
should be done by an experienced repairman.
NOTE:Use only manufacturer approved A/C System
Sealers, Stop Leak Products, Seal Conditioners, Compres-
sor Oil, and Refrigerants.
Refrigerant Recovery and Recycling
R-134a Air Conditioning Refrigerant is a hydrofluoro-
carbon (HFC) that is endorsed by the Environmental
Protection Agency (EPA) and is an ozone-saving product.
However, the manufacturer recommends that air condi-
tioning service be performed by authorized dealers or
other service facilities using recovery and recycling
equipment.
Body Lubrication
Locks and all body pivot points, including such items as
seat tracks, door hinge pivot points and rollers, liftgate,
tailgate, sliding doors and hood hinges, should be lubri-
cated periodically with a lithium based grease such as
MOPARSpray White Lube to assure quiet, easy opera-
tion and to protect against rust and wear. Prior to the
application of any lubricant, the parts concerned should
be wiped clean to remove dust and grit; after lubricating
excess oil and grease should be removed. Particular
attention should also be given to hood latching compo-
nents to insure proper function. When performing other
underhood services, the hood latch, release mechanism
and safety catch should be cleaned and lubricated.
The external lock cylinders should be lubricated twice a
year, preferably in the Fall and Spring. Apply a small
amount of a high quality lubricant such as MOPAR
Lock Cylinder Lubricant directly into the lock cylinder.
420 MAINTAINING YOUR VEHICLE

if it has been 6 months since your last oil change even
if the oil change indicator message is NOT illumi-
nated.
•Change your engine oil more often if you drive your
vehicle off-road for an extended period of time.
•Under no circumstances should oil change intervals
exceed 6,000 miles (10,000 km) or 6 months, whichever
comes first.
Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If this
scheduled oil change is performed by someone other
than your authorized dealer the message can be reset by
referring to the steps described under ”Electronic Vehicle
Information Center” in Section 4 of this manual.
At Each Stop for Fuel
•Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level whilethe vehicle is on level ground will improve the accu-
racy of the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
•Check the windshield washer solvent and add if
required.
Once a Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering and transmission
(4.7L and 5.7L only) and add as needed.
•Check all lights and other electrical items for correct
operation.
MAINTENANCE SCHEDULES 463
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•Check the windshield washer solvent and add if
required.
Once a Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of the coolant reservoir, brake
master cylinder, and power steering and add as
needed.
•Check all lights and other electrical items for correct
operation.
At Each Oil Change
•Change the engine oil filter.
•Inspect the brake hoses and lines.
•Inspect for the presence of water in the fuel filter/
water separator unit.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
Required Maintenance Intervals
Refer to the Maintenance Schedules on the following
pages for the required maintenance intervals.
MAINTENANCE SCHEDULES 477
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Drain, Flush, and Refill.................. 425
Inspection........................... 424
Points to Remember.................... 429
Pressure Cap......................... 427
Radiator Cap......................... 427
Selection of Coolant (Antifreeze).........425,456
Cruise Light........................... 191
Cupholders............................ 167
Customer Assistance..................... 489
Data Recorder, Event...................... 56
Daytime Running Lights................... 133
Dealer Service.......................... 413
Defroster, Rear Window................... 173
Defroster, Windshield................71,263,269
Diagnostic System, Onboard................ 410
Diesel Fuel............................ 360
Diesel Fuel Requirements.................. 360
Dimmer Switch, Headlight................. 137Dipsticks
Automatic Transmission................. 434
Oil (Engine).......................... 414
Power Steering........................ 307
Disabled Vehicle Towing................... 401
Disarming, Theft System................... 21
Disposal
Engine Oil........................... 417
Used Engine Fluids.................... 417
Door Locks............................. 29
Door Locks, Automatic.................... 30
Door Opener, Garage..................... 154
Driving............................... 301
Off-Pavement......................... 302
Off-Road............................ 302
DVD Player (Video Entertainment System™).... 257
E-85 Fuel............................. 361
Electric Remote Mirrors.................... 80
INDEX 501
10

Bulb Replacement...................... 450
Cargo .............................. 167
Center Mounted Stop................... 455
Cruise.............................. 191
Daytime Running...................... 133
Dimmer Switch, Headlight.............130,137
Electronic Stability Program (ESP) Indicator . . . 325
Electronic Throttle Control Warning......... 192
Exterior.............................. 71
Fog ..........................135,192,453
Four-Wheel Drive Indicator............... 191
Fuses............................... 441
Glow Plug Light....................... 193
Hazard Warning Flasher................. 390
Headlight Switch...................... 130
Headlights........................450,451
Headlights On With Wipers............... 131
High Beam Indicator.................... 185
Illuminated Entry....................... 21Instrument Cluster..................130,134
Interior..........................134,137
Lights On Reminder.................... 135
Low Fuel............................ 193
Malfunction Indicator (Check Engine)........ 185
Map Reading......................... 138
Oil Pressure.......................... 187
Passing............................. 137
Reading..........................138,153
Rear Servicing........................ 454
Rear Tail............................ 454
Seat Belt Reminder..................... 191
Security Alarm (Theft Alarm).............. 187
Service............................. 450
Service Engine Soon (Malfunction Indicator) . . . 185
Side Marker.......................... 454
SmartBeams.......................... 132
Tire Pressure Monitoring (TPMS)........... 187
Tow/Haul Indicator.................... 190
INDEX 507
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Sunglasses Storage....................... 154
Supplemental Restraint System - Airbag........ 46
Sway Control, Trailer..................... 320
Synthetic Engine Oil...................... 417
System, Remote Starting.................... 27
Tachometer............................ 187
Telescoping Steering Column............... 142
Temperature Control, Automatic (ATC)........ 264
Temperature Gauge, Engine Coolant.......... 189
Tether Anchor, Child Restraint............... 63
Theft System Arming...................... 20
Theft System Disarming.................... 21
Tie Down Hooks, Cargo................... 170
Tilt Steering Column..................... 142
Time Delay, Headlight.................... 137
Tip Start.............................. 284
Tire and Loading Information Placard......... 331
Tire Identification Number (TIN)............. 330Tire Markings.......................... 326
Tire Safety Information.................... 326
Tires ............................71,335,494
Air Pressure.......................... 336
Chains.............................. 343
Changing............................ 391
Compact Spare........................ 338
General Information.................... 335
High Speed.......................... 337
Inflation Pressures..................... 336
Jacking............................. 391
Life of Tires.......................... 341
Load Capacity........................ 331
Pressure Monitor System (TPMS)........... 345
Pressure Warning Light.................. 187
Quality Grading....................... 494
Radial.............................. 338
Replacement......................... 342
Rotation............................ 344
514 INDEX