2010 JEEP GRAND CHEROKEE air condition

MAINTAINING YOUR VEHICLE
CONTENTS
Engine Compartment – 3.7L .............. 363
 Engine Compartment – 5.7L .............. 364
 Onboard Diagnostic System – OBD II ....... 365
▫ Loose Fuel Filler Cap Message ........... 365
 Emissions Inspection And Maintenance
Programs ............................ 366
 Replacement Parts ..................... 368
 Dealer Service ........................ 368
 Maintenance Procedures ................. 368
▫ Engine Oil ......................... 369 ▫
Engine Oil Filter ..................... 372
▫ Engine Air Cleaner Filter ............... 372
▫ Maintenance-Free Battery .............. 373
▫ Air Conditioner Maintenance ............ 374
▫ Body Lubrication .................... 375
▫ Windshield Wiper Blades ............... 376
▫ Adding Washer Fluid ................. 376
▫ Exhaust System ..................... 377
▫ Cooling System ..................... 380
7

CAUTION!
•It is essential when replacing the cables on the
battery that the positive cable is attached to the
positive post, and the negative cable is attached to
the negative post. Battery posts are marked (+)
positive and (-) negative and identified on the
battery case.
•If a “fast charger” is used while battery is in the
vehicle, disconnect both vehicle battery cables
before connecting the charger to the battery. Do
not use a “fast charger” to provide starting voltage.
Air Conditioner Maintenance
For best possible performance, your air conditioner
should be checked and serviced by an authorized dealer
at the start of each warm season. This service should
include cleaning of the condenser fins and a performance
test. Drive belt condition should also be checked at this
time.
CAUTION!
Do not use chemical flushes in your air conditioning
system as the chemicals can damage your air condi-
tioning components. Such damage is not covered by
the New Vehicle Limited Warranty.
374 MAINTAINING YOUR VEHICLE

WARNING!
•Use only refrigerants and compressor lubricants
approved by the manufacturer for your air condi-
tioning system. Some unapproved refrigerants are
flammable and can explode, injuring you. Other
unapproved refrigerants or lubricants can cause
the system to fail, requiring costly repairs. Refer to
Warranty Information Book, located on the DVD,
for further warranty information.
•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
MOPAR Spray White Lube or equivalent to assure
quiet, easy operation 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
7
MAINTAINING YOUR VEHICLE 375

If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
•Do not overfill the coolant recovery bottle.
•Check engine coolant (antifreeze) freeze point in the
radiator and in the coolant recovery bottle. If engine
coolant (antifreeze) needs to be added, contents of
coolant recovery bottle must also be protected against
freezing.
•If frequent engine coolant (antifreeze) additions are
required, or if the level in the coolant recovery bottle
does not drop when the engine cools, the cooling
system should be pressure tested for leaks.
•Maintain engine coolant (antifreeze) concentration at
50% HOAT engine coolant (antifreeze) (minimum)
and distilled water for proper corrosion protection of
your engine, which contains aluminum components.
•Make sure that the radiator and coolant recovery
bottle hoses are not kinked or obstructed.
•Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
•Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory cooling performance, poor gas
mileage, and increased emissions.
Brake System
In order to assure brake system performance, all brake
system components should be periodically inspected.
Refer to “Maintenance Schedule” for further information.7
MAINTAINING YOUR VEHICLE 385

CAUTION!
Under frequent heavy-duty driving conditions,
change all lubricants, and lubricate body compo-
nents, all driveline joints and steering linkage more
often than in normal service, to prevent excessive
wear.
Appearance Care and Protection from Corrosion
Protection of Body and Paint from Corrosion
Vehicle body care requirements vary according to geo-
graphic locations and usage. Chemicals that make roads
passable in snow and ice, and those that are sprayed on
trees and road surfaces during other seasons, are highly
corrosive to the metal in your vehicle.
The following maintenance recommendations will enable
you to obtain maximum benefit from the corrosion
resistance built into your vehicle.
What Causes Corrosion?
Corrosion is the result of deterioration or removal of
paint and protective coatings from your vehicle.
The most common causes are:
•Road salt, dirt and moisture accumulation.
•Stone and gravel impact.
•Insects, tree sap and tar.
•Salt in the air near seacoast localities.
•Atmospheric fallout/industrial pollutants.
Washing
•
Wash your vehicle regularly. Always wash your ve-
hicle in the shade using MOPARCar Wash or a mild
car wash soap, and rinse the panels completely with
clear water.
7
MAINTAINING YOUR VEHICLE 393

CavityCartridge
Fuse Mini-
Fuse Description
3 10 Amp
RedHtd Mirror (EBL)
4 20 Amp
YellowRr Pwr Out (B+)
5 10 Amp
RedRr HVAC (R/O)
(Commander Only)
6 Spare
(B+)
7 20 Amp
YellowDoor Locks (B+)
8 Spare
(B+)
9 20 Amp
YellowPwr Outlet (B+)Cavity
Cartridge
Fuse Mini-
Fuse Description
10 10 Amp
RedFinal Drive Control
Module (FDCM),
Heater Ventilation/
Air Conditioning
(HVAC), Rear Heated
Seat Switch, O/H,
Heater Ventilation/
Air Conditioning
(HVAC) Relay, Rear
Park Assist
11 Spare
(B+)
12 10 Amp
RedDoor Mods, O/H
Lamps, IP Courtesy
Lamps, Glove Box
Lamp (B+)
13 10 Amp
RedAutowipe (R/A)
7
MAINTAINING YOUR VEHICLE 399

VEHICLE STORAGE
If you are leaving your vehicle dormant for more than
21 days you may want to take steps to protect your
battery. You may:
•Remove fuse #27 in the Intelligent Power Module
labeled Ignition-Off Draw (IOD#1).
•Or, disconnect the negative cable from the battery.
•Anytime you store your vehicle, or keep it out of
service (i.e. vacation) for two weeks or more, run the
air conditioning system at idle for about five minutes
in the fresh air and high blower setting. This will
ensure adequate system lubrication to minimize the
possibility of compressor damage when the system is
started again.
REPLACEMENT BULBS
Interior LightsBulb Type
Glove Box Lamp ......................... 194
Grab Handle Lamp ................ L002825W5W
Overhead Console Reading Lamps .........VT4976
Rear Cargo Lamp ....................... 214–2
Visor Vanity Lamp ..................... V26377
Underpanel Courtesy Lamps ................ 906
Instrument Cluster (General Illumination) ....... 103
Telltale/Hazard Lamp ...................... 74
406 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 control
system. These and all other maintenance services in-
cluded 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.
Based on engine operation conditions 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 miles (805 km).
NOTE:
•The oil change indicator message will not monitor the
time since the last oil change. Change your vehicles oil
if it has been 6 months since your last oil change even
if the oil change indicator message is NOT illumi-
nated.
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S418 MAINTENANCE SCHEDULES