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WARNING!• Do not open hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over-
heated. Do not loosen or remove the cap to cool an
overheated engine. Heat causes pressure to build up
in the cooling system. To prevent scalding or injury,
do not remove the pressure cap while the system is
hot or under pressure.
• Do not use a pressure cap other than the one speci-
fied for your vehicle. Personal injury or engine
damage may result.
Disposal Of Used Engine Coolant
Used ethylene glycol-based engine coolant (antifreeze) is a
regulated substance requiring proper disposal. Check with
your local authorities to determine the disposal rules for
your community. To prevent ingestion by animals or
children, do not store ethylene glycol-based engine coolant
(antifreeze) in open containers or allow it to remain in
puddles on the ground. If ingested by a child or pet, seek
emergency assistance immediately. Clean up any ground
spills immediately. Checking Coolant Level — 6.4L Engine
The level of the coolant in the pressurized coolant bottle
should be between the “MIN” and “MAX” range on the
bottle when the engine is cold.
The radiator normally remains completely full, so there is no
need to remove the cap unless checking for coolant freeze
point or replacing engine coolant (antifreeze). Advise your
service attendant of this. As long as the engine operating
temperature is satisfactory, the coolant bottle need only be
checked once a month. When additional engine coolant
(antifreeze) is needed to maintain the proper level, it should
be added to the coolant bottle. Do not overfill.
Points To Remember
NOTE: When the vehicle is stopped after a few miles/
kilometers of operation, you may observe vapor coming from
the front of the engine compartment. This is normally a result
of moisture from rain, snow, or high humidity accumulating on
the radiator and being vaporized when the thermostat opens,
allowing hot engine coolant (antifreeze) to enter the radiator.
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 expansion bottle.474 MAINTAINING YOUR VEHICLE
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• Check the coolant freeze point in the radiator and in the
coolant expansion bottle. If engine coolant (antifreeze)
needs to be added, the contents of the coolant expansion
bottle must also be protected against freezing.
• If frequent engine coolant (antifreeze) additions are
required, the cooling system should be pressure tested
for leaks.
• Maintain engine coolant (antifreeze) concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corrosion pro-
tection of your engine which contains aluminum com-
ponents.
• Make sure that the coolant expansion bottle overflow
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 engine coolant (antifreeze) performance,
poor gas mileage, and increased emissions. Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically. Refer
to the “Maintenance Schedule” for the proper maintenance
intervals.
WARNING!Riding the brakes can lead to brake failure and possi-
bly a collision. Driving with your foot resting or riding
on the brake pedal can result in abnormally high brake
temperatures, excessive lining wear, and possible
brake damage. You would not have your full braking
capacity in an emergency.
Brake Fluid Level Check
The fluid level of the master cylinder should be checked
when performing under the hood service or immediately if
the brake system warning lamp indicates system failure.
The brake master cylinder has a translucent plastic reser-
voir. On the outboard side of the reservoir, there is a
“MAX” mark and a “MIN” mark. The fluid level must be
kept within these two marks. Do not add fluid above the
MAX mark because leakage may occur at the cap. 7MAINTAINING YOUR VEHICLE 475
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Cavity Cartridge Fuse Micro Fuse Description
F63 – 20 Amp Yellow Ignition Coils (Gas), Urea Heater
(Cummins Diesel)
F64 – 25 Amp Clear Fuel Injectors / Powertrain
F65 – – Spare Fuse
F66 – 10 Amp Red Sunroof / Passenger Window Switches /
Rain Sensor
F67 – 10 Amp Red CD / DVD / Bluetooth Hands-free Module –
If Equipped
F69 – 15 Amp Blue Mod SCR 12V (Cummins Diesel) – If Equipped
F70 – 30 Amp Green Fuel Pump Motor
F71 – 25 Amp Clear Amplifier
F72 – 10 Amp Red PCM – If Equipped
F73 – 20 Amp Yellow Fuel Transfer Pump (HD Only) – If Equipped
F74 – 20 Amp Yellow
(Gas Engine &
1500 LD Diesel) Brake Vacuum Pump Gas/Diesel – If Equipped
F75 – 10 Amp Red Coolant Temperature Valve Actuator
F76 – 10 Amp Red Antilock Brakes / Electronic Stability Control
F77 – 10 Amp Red Drivetrain Control Module/Front Axle
Disconnect Module 7MAINTAINING YOUR VEHICLE 491
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FLUID CAPACITIES
U.S. Metric
Fuel (Approximate)
Standard Rear Tank 52 Gallons 197 Liters
Optional Midship Tank 22 Gallons 83 Liters
Engine Oil With Filter
6.4L Engine (We recommend you use SAE 0W-40, Synthetic API Certified) 7 Quarts 6.6 Liters
Cooling System
6.4L Engine (We recommend you use MOPAR Antifreeze/Coolant 10 Year/
150,000 Mile Formula). 16.6 Quarts 15.7 Liters500 MAINTAINING YOUR VEHICLE
Page 503 of 536
FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use MOPAR Antifreeze/Coolant 10–Year/150,000 Mile Formula
OAT (Organic Additive Technology).
Engine Oil – 6.4L Engine For best performance and maximum protection under all types of operating condi-
tions, the manufacturer only recommends full synthetic engine oils that meet the
American Petroleum Institute (API) categories of SN. The manufacturer recommends
the use of Pennzoil Ultra 0W-40 or equivalent MOPAR engine oil meeting the re-
quirements of FCA Material Standard MS-12633 for use in all operating temperatures.
Engine Oil Filter – 6.4L Engine We recommend you use MOPAR Engine Oil Filters.
Spark Plugs – 6.4L Engine We recommend you use MOPAR Spark Plugs.
Fuel Selection – 6.4L Engine 89 Octane Recommended - 87 Octane Acceptable, 0-15% Ethanol. 7MAINTAINING YOUR VEHICLE 501
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CAUTION!• Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT) en-
gine coolant (antifreeze), may result in engine dam-
age and may decrease corrosion protection. Organic
Additive Technology (OAT) engine coolant is differ-
ent and should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant (anti-
freeze) or any “globally compatible” coolant (anti-
freeze). If a non-OAT engine coolant (antifreeze) is
introduced into the cooling system in an emergency,
the cooling system will need to be drained, flushed, (Continued) CAUTION! (Continued)and refilled with fresh OAT coolant (conforming to
MS.90032), by an authorized dealer as soon as pos-
sible.
• Do not use water alone or alcohol-based engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible with the radiator engine coolant and
may plug the radiator.
• This vehicle has not been designed for use with
propylene glycol-based engine coolant (antifreeze).
Use of propylene glycol-based engine coolant (anti-
freeze) is not recommended.502 MAINTAINING YOUR VEHICLE
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MAINTENANCE SCHEDULE
Your vehicle is equipped with an automatic oil change
indicator system. The oil change indicator system will
remind you that it is time to take your vehicle in for
scheduled maintenance.
Based on engine operation conditions, the oil change
indicator message will illuminate. This means that service
is required for your vehicle. Operating conditions such as
frequent short-trips, trailer tow, extremely hot or cold
ambient temperatures, and E85 fuel usage will influence
when the “Oil Change Required” message is displayed.
Severe Operating Conditions can cause the change oil
message to illuminate as early as 3,500 miles (5,600 km)
since last reset. Have your vehicle serviced as soon as
possible, within the next 500 miles (805 km).
Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If a
scheduled oil change is performed by someone other than
your authorized dealer, the message can be reset by
referring to the steps described under “Instrument Cluster
Display” in “Understanding Your Instrument Panel” for
further information. Gasoline Engines:
Under no circumstances should oil change intervals 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.
Severe Duty:
Change Engine Oil at 4,000 miles (6,500 km) if the vehicle
is operated in a dusty and off road environment or is
operated predominately at idle or very low engine RPM’s.
This type of vehicle use is considered Severe Duty.
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 transmis-
sion, and fill as needed
• Check function of all interior and exterior lights506 MAINTENANCE SCHEDULES
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Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000Or Years: 23456789101112131415
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000Additional Inspections
Inspect the CV/Universal joints. XXXXX
Inspect front suspension, tie rod ends,
and replace if necessary. XXXXXXX
Inspect the front and rear axle surfaces.
If gear oil leakage is suspected, check
the fluid level. If using your vehicle for
police, taxi, fleet, off-road or frequent
trailer towing, change axle fluid. XXXXXXX
Inspect the brake linings, parking brake
function. XXXXXXX
Additional Maintenance
Replace engine air filter. XXXXX
Replace spark plugs. ** X
Flush and replace the engine coolant at
10 years or 150,000 miles (240,000 km)
whichever comes first. XX
Change the automatic transmission fluid
(AS66RC Transmission Only). XXX508 MAINTENANCE SCHEDULES