MAINTAINING YOUR VEHICLECONTENTS ENGINE COMPARTMENT — 6.4L .......... .447
ONBOARD DIAGNOSTIC SYSTEM (OBD II) . . . .448
▫ Onboard Diagnostic System (OBD II)
Cybersecurity ........................ .448
▫ Loose Fuel Filler Cap Message ............ .449
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS ............. .449
REPLACEMENT PARTS .................. .450
DEALER SERVICE ...................... .450
MAINTENANCE PROCEDURES ............ .451
▫ Engine Oil .......................... .451
▫ Engine Oil Filter ...................... .453
▫ Engine Air Cleaner Filter ................ .454
▫ Accessory Drive Belt Inspection ........... .456
▫ Maintenance-Free Battery ................ .458 ▫ Air Conditioner Maintenance ............. .459
▫ Front Prop Shaft Lubrication —
Four-Wheel Drive Models ................ .465
▫ Body Lubrication ..................... .466
▫ Windshield Wiper Blades ................ .466
▫ Adding Washer Fluid .................. .469
▫ Exhaust System ....................... .470
▫ Cooling System ....................... .471
▫ Brake System ........................ .475
▫ Rear Axle And 4x4 Front Driving Axle
Fluid Level .......................... .476
▫ Transfer Case ........................ .477
▫ Automatic Transmission — If Equipped ..... .478
▫ Appearance Care And Protection From
Corrosion ........................... .4807
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Always
maintain the oil level within the SAFE zone on the dipstick.
Adding one quart of oil when the reading is at the bottom
of the SAFE zone will result in a reading at the top of the
safe zone on these engines.
CAUTION!Overfilling or underfilling the crankcase will cause oil
aeration or loss of oil pressure. This could damage your
engine.
Change Engine Oil
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
Refer to the “Maintenance Schedule” for further informa-
tion.
NOTE: Under no circumstances should oil change inter-
vals exceed 8,000 miles (13,000 km), twelve months or 350
hours of engine run time, whichever comes first. The 350
hours of engine run or idle time is generally only a concern
for fleet customers. Engine Oil Selection — 6.4L Engine
For best performance and maximum protection under all
types of operating conditions, the manufacturer only rec-
ommends engine oils that are API Certified and meet the
requirements of FCA Material Standard MS-12633.
American Petroleum Institute (API) Engine Oil
Identification Symbol
This symbol means that the oil has been
certified by the American Petroleum In-
stitute (API). The manufacturer only rec-
ommends API Certified engine oils.
This symbol certifies 0W-20, 5W-20, 0W-
30, 5W-30 and 10W-30 engine oils.
CAUTION!Do not use chemical flushes in your engine oil as the
chemicals can damage your engine. Such damage is not
covered by the New Vehicle Limited Warranty.452 MAINTAINING YOUR VEHICLE
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 tension should also be checked at this time.
WARNING!• Use only refrigerants and compressor lubricants ap-
proved by the manufacturer for your air conditioning
system. Some unapproved refrigerants are flam-
mable and can explode, injuring you. Other unap-
proved refrigerants or lubricants can cause the sys-
tem to fail, requiring costly repairs. Refer to
Warranty Information Book, located on the DVD, for
further warranty information.
• The air conditioning system contains refrigerant un-
der 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 technician. CAUTION!Do not use chemical flushes in your air conditioning
system as the chemicals can damage your air condition-
ing components. Such damage is not covered by the
New Vehicle Limited Warranty.
Refrigerant Recovery And Recycling R134a — If
Equipped
R-134a Air Conditioning Refrigerant is a hydrofluoro-
carbon (HFC) that is endorsed by the Environmental
Protection Agency and is an ozone-saving product. How-
ever, the manufacturer recommends that air conditioning
service be performed by authorized dealer or other service
facilities using recovery and recycling equipment.
NOTE: Use only manufacturer approved A/C system PAG
compressor oil and refrigerants. 7MAINTAINING YOUR VEHICLE 459
fluid level is low, add fluid through the dipstick tube to
bring it to the proper level. Do not overfill. Use ONLY
the specified fluid (see Fluids, Lubricants, and Genuine
Parts for fluid specifications). After adding any quan-
tity of oil through the dipstick tube, wait a minimum of
two minutes for the oil to fully drain into the transmis-
sion before rechecking the fluid level.
NOTE: If it is necessary to check the transmission below
the operating temperature, the fluid level should be be-
tween the two “COLD” (lower) holes on the dipstick with
the fluid at 60-70°F / 16-21°C for 66RFE transmission, or
68-86°F / 20-30°C for AS66RC transmission. Only use the
COLD region of the dipstick as a rough reference when
setting the fluid level after a transmission service or fluid
change. Re-check the fluid level, and adjust as required,
once the transmission reaches normal operating tempera-
ture.
CAUTION!If the fluid temperature is below 50°F (10°C) it may not
register on the dipstick. Do not add fluid until the
temperature is elevated enough to produce an accurate
reading. Run the engine at idle, in PARK, to warm the
fluid. 9. Reinsert the dipstick. Check for leaks. Release the park-
ing brake.
NOTE: To prevent dirt and water from entering the trans-
mission after checking or replenishing fluid, make sure that
the dipstick cap is properly reseated. It is normal for the
dipstick cap to spring back slightly from its fully seated
position, as long as its seal remains engaged in the dipstick
tube.
Fluid And Filter Changes — Six Speed Transmission
Refer to the “Maintenance Schedule” for the proper main-
tenance intervals.
In addition, change the fluid and filter(s) if the fluid
becomes contaminated (with water, etc.), or if the transmis-
sion is disassembled for any reason.
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 chemicals that are sprayed
on trees and road surfaces during other seasons, are highly
corrosive to the metal in your vehicle. Outside parking,
which exposes your vehicle to airborne contaminants, road480 MAINTAINING YOUR VEHICLE
Exhaust Gas Caution .................... .91, 400
Exhaust System ........................ .91, 470
Exterior Lighting .......................... .125
Exterior Lights .............................94
Filters
Air Cleaner ............................ .454
Air Conditioning .................... .291, 460
Engine Fuel ........................... .501
Engine Oil ......................... .453, 501
Engine Oil Disposal ...................... .453
Flashers
Turn Signal ...................... .94, 132, 216
Flat Tire Stowage .......................... .435
Flooded Engine Starting ..................... .323
Fluid, Brake ............................. .503
Fluid Capacities ........................... .500
Fluid Leaks ...............................94
Fluid Level Checks
Automatic Transmission ................... .479
Brake ................................ .475
Power Steering ......................... .350
Fluids, Lubricants And Genuine Parts ........... .501
Fog Lights ........................ .128, 212, 496
Fold Flat Load Floor ....................... .183 Four-Way Hazard Flasher .................... .426
Four Wheel Drive ......................... .338
Freeing A Stuck Vehicle ..................... .439
Front Axle (Differential) ..................... .476
Fuel ................................... .397
Adding .............................. .400
Additives ............................. .399
Clean Air ............................. .397
Ethanol .............................. .397
Filler Cap (Gas Cap) ..................... .401
Filter ................................ .501
Gasoline .............................. .397
Light ................................ .210
Materials Added ........................ .399
Methanol ............................. .397
Octane Rating .......................... .397
Requirements .......................... .397
Tank Capacity .......................... .500
Fuses .................................. .486
Garage Door Opener (HomeLink) ........... .161, 166
Gas Cap (Fuel Filler Cap) ................ .401, 449
Gasoline, Clean Air ........................ .397
Gasoline (Fuel) ........................... .397
Gasoline, Reformulated ..................... .397522 INDEX