Page 440 of 669

BRAKE SYSTEM
If power assist is lost for any reason (for example,
repeated brake applications with the engine off), the
brakes will still function. However, you will experience a
substantial increase in braking effort to stop the vehicle.
If either the front or rear hydraulic system loses normal
braking capability, the remaining system will still func-
tion with some loss of overall braking effectiveness. This
will be evident by increased pedal travel during applica-
tion, greater pedal force required to slow or stop, and
activation of the “Brake Warning Light” and the “ABS
Warning Light” (if equipped) during brake use.
The brake system power assist is provided by a hydro-
boost unit which shares fluid with the power steering
system. You may experience some clicking or hissing
noises from the hydro-boost system during hard braking
conditions.NOTE:
Under cold temperatures, pedal effort will be
higher than normal until the power steering fluid reaches
operating temperature.
Hydraulic Brake Assist
The brake system power assist is provided by a hydro-
boost unit which shares fluid with the power steering
system. You may experience some clicking or hissing
noises from the hydro-boost system during hard braking
conditions.
NOTE: Under cold temperatures, pedal effort will be
higher than normal until the power steering fluid reaches
operating temperature.
ELECTRONIC BRAKE CONTROL SYSTEM
Your vehicle is equipped with an advanced Electronic
Brake Control system (EBC). This system includes Elec-
tronic Brake Force Distribution (EBD), Anti-Lock Brake
System (ABS), Brake Assist System (BAS), Hill Start
438 STARTING AND OPERATING
Page 561 of 669
ENGINE COMPARTMENT — 6.4L
1 — Coolant Pressure Bottle6 — Battery
2 — Transmission Dipstick 7 — Power Distribution Center (Fuses)
3 — Engine Oil Fill 8 — Washer Solvent
4 — Engine Oil Dipstick 9 — Power Steering Fluid Reservoir
5 — Brake Fluid Reservoir 10 — Air Cleaner Filter
7
MAINTAINING YOUR VEHICLE 559
Page 626 of 669

Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission (6.4L Engine with
66RFE Transmission) (For Diesel Engine
See Diesel Supplement) Use only ATF+4 Automatic Transmission Fluid. Failure to use ATF+4
fluid may affect the function or performance of your transmission.
We recommend MOPAR ATF+4 fluid.
Automatic Transmission (6.4L Engine with
AS66RC Transmission) Use only MOPAR ASRC Automatic Transmission Fluid or equivalent.
Failure to use the proper fluid may affect the function or performance
of your transmission.
Transfer Case We recommend you use MOPAR BW44-44 Transfer Case Fluid.
Front and Rear Axle Fluid (4500/5500) We recommend you use GL-5 SAE 75W-90 Synthetic (MS-9763).
Brake Master Cylinder We recommend you use MOPAR DOT 3 and SAE J1703. If DOT 3
brake fluid is not available, then DOT 4 is acceptable.
Power Steering Reservoir We recommend you use MOPAR Power Steering Fluid +4, MOPAR
ATF+4 Automatic Transmission Fluid.
624 MAINTAINING YOUR VEHICLE
Page 629 of 669

Once A Month Or Before A Long Trip:
•Check engine oil level
• Check windshield washer fluid level
• Check the tire inflation pressures and look for unusual
wear or damage
• Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering and automatic trans-
mission and fill as needed.
• Check function of all interior and exterior lights
Required Maintenance
Refer to the Maintenance Schedules on the following
pages for required maintenance.
At Every Oil Change Interval As Indicated By Oil Change Indicator System:
•Change oil and filter.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Rotate the tires. Rotate at the first sign of irregu-
lar wear, even if it occurs before the oil indicator
system turns on.
• Inspect battery and clean and tighten terminals as
required.
• Inspect automatic transmission fluid if equipped
with dipstick.
• Inspect brake pads, shoes, rotors, drums, hoses
and park brake.
• Inspect engine cooling system protection and
hoses.
• Inspect exhaust system.
• Inspect engine air cleaner if using in dusty or
off-road conditions.
• Lube the front drive shaft fitting. 8
MAINTENANCE SCHEDULES 627
Page 650 of 669

Bulb Replacement........................ .615
Bulbs, Light ..........................117,614
Cab Top Clearance Lights ...................619
Camera, Rear ........................... .201
Capacities, Antifreeze (Engine Coolant) ..........621
Capacities, Fluid ......................... .621
Caps, Filler Oil (Engine) .......................... .566
Power Steering ........................ .434
Radiator (Coolant Pressure) ................587
Carbon Monoxide Warning ...............114,498
Cargo Light ............................ .168
Car Washes ............................ .598
Center High Mounted Stop Light ..............618
Center Seat Storage Compartment .............218
Certification Label ........................ .500
Chart, Tire Sizing ........................ .457
Check Engine Light (Malfunction Indicator Light) . .561 Checking Your Vehicle For Safety
..............114
Checks, Safety ............................114
Child Restraint ............................82
Child Restraints Booster Seats ...........................87
Child Restraints .........................82
Child Seat Installation .................99, 102
How To Stow An Unused ALR Seat Belt ........98
Infants And Child Restraints ................84
Install A LATCH-Compatible Child Restraint ....97
Installing Child Restraints Using The Vehicle Seat
Belt ..................................99
Locating The LATCH Anchorages ............94
Lower Anchors And Tethers For Children .......89
Older Children And Child Restraints ..........86
Seating Positions ........................88
Cigar Lighter ............................211
Clean Air Gasoline ....................... .494
648 INDEX
Page 654 of 669

Fluid Level ChecksAutomatic Transmission ..................594
Brake ............................... .590
Power Steering ........................ .434
Fluids, Lubricants And Genuine Parts ...........622
Fog Lights ....................... .163, 257, 617
Four-Way Hazard Flasher ...................532
Four Wheel Drive ........................ .419
Freeing A Stuck Vehicle .....................549
Front Axle (Differential) .....................591
Fuel .................................. .494
Adding ............................. .498
Additives ............................ .496
Clean Air ............................ .494
Ethanol ............................. .495
Filler Cap (Gas Cap) .....................499
Filter ............................... .622
Gasoline ............................. .494
Light ............................... .254Materials Added
....................... .496
Methanol ............................ .495
Octane Rating ......................... .494
Requirements ......................... .494
Tank Capacity ......................... .621
Fuses ................................. .603
Gas Cap (Fuel Filler Cap) ................499, 560
Gasoline, Clean Air ....................... .494
Gasoline (Fuel) .......................... .494
Gasoline, Reformulated .....................494
Gear Ranges ............................ .405
Gear Select Lever Override ..................551
Glass Cleaning .......................... .602
Grocery Bag Retainer ...................... .222
Gross Axle Weight Rating ...................503
Gross Vehicle Weight Rating ..................502
Guide,
Body Builders ........................6
652 INDEX
Page 660 of 669

Power SeatsDown ........................... .140, 141
Forward ......................... .140, 141
Rearward ........................ .140, 141
Recline .............................. .140
Tilt ................................ .141
Up ............................. .140, 141
Power Steering Fluid ...................... .624
Pregnant Women And Seat Belts ...............63
Pretensioners Seat Belts ..............................64
Programmable Electronic Features ..........279, 302
Programming Transmitters (Remote Keyless Entry) . .24
PTO (Power Take-Off) ..................... .416
Radial Ply Tires ......................... .471
Radiator Cap (Coolant Pressure Cap) ........584, 587
Radio Frequency General Information ............18, 20, 32, 35, 45 Radio Operation
......................... .343
Radio (Sound Systems) .....................339
Rain Sensitive Wiper System .................172
Rear Axle (Differential) ..................591, 592
Rear ParkSense System ..................182, 192
Rear Window Features .....................223
Rear Window, Sliding ..................... .224
Reclining Rear Seats ...................... .147
Recorder, Event Data .......................81
Recreational Towing ...................... .523
Shifting Into Transfer Case Neutral (N) ........526
Shifting Out Of Transfer Case Neutral (N) ......528
Reformulated Gasoline .....................494
Refrigerant .......................... .574, 575
Reminder, Seat Belt .........................51
Remote Control Starting System .........................32
Remote Keyless Entry (RKE) ................24, 26
Programming Additional Key Fobs ...........20
658 INDEX