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spraying water from a garden hose vertically down the
face of the A/C condenser (if equipped) or the back of the
radiator core.
Check the engine cooling system hoses for brittle rubber,
cracking, tears, cuts and tightness of the connection at the
coolant recovery bottle and radiator. Inspect the entire
system for leaks.
With the engine at normal operating temperature (but
not running), check the cooling system pressure cap for
proper vacuum sealing by draining a small amount of
engine coolant (antifreeze) from the radiator drain cock.
The radiator drain cock is located in the lower radiator
tank. If the cap is sealing properly, the engine coolant
(antifreeze) will begin to drain from the coolant expan-
sion bottle. DO NOT REMOVE THE COOLANT PRES-
SURE CAP WHEN THE COOLING SYSTEM IS HOT.Cooling System — Drain Flush And Refill
If the engine coolant (antifreeze) is dirty or contains a
considerable amount of sediment, clean and flush with a
reliable cooling system cleaner. Follow with a thorough
rinsing to remove all deposits and chemicals. Properly
dispose of old engine coolant (antifreeze).
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
Selection Of Coolant
Refer to “Fluids, Lubricants, and Genuine Parts” in
“Maintaining Your Vehicle” for further information.
5
MAINTAINING YOUR VEHICLE 113
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“MAX” mark and a “MIN” mark. The fluid level must be
kept within these two marks. Do not add fluid above the
full mark because leakage may occur at the cap.
With disc brakes, the fluid level can be expected to fall as
the brake linings wear. However, an unexpected drop in
fluid level may be caused by a leak and a system check
should be conducted.
Refer to “Fluids, Lubricants, and Genuine Parts” in
“Maintaining Your Vehicle” for further information.WARNING!
•Use only manufacturer’s recommended brake
fluid. Refer to “Fluids, Lubricants, and Genuine
Parts” in “Maintaining Your Vehicle” for further
information. Using the wrong type of brake fluid
can severely damage your brake system and/or
impair its performance. The proper type of brake
fluid for your vehicle is also identified on the
original factory installed hydraulic master cylinder
reservoir.
(Continued)
5
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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 Only use ACEA C3 5W-30 Synthetic Low Ash engine oil meeting FCA US Material Standard
MS-11106 or Pennzoil Ultra Euro L full synthetic 5W-30 motor oil.
Engine Oil Filter We recommend you use MOPAR® Engine Oil Filters.
Fuel Filters We recommend you use MOPAR® Fuel Filter. Must meet 3 micron rating.Using a fuel filter
that does not meet the manufacturers filtration and water separating requirements can
severely impact fuel system life and reliability.
122 MAINTAINING YOUR VEHICLE
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Component Fluid, Lubricant, or Genuine Part
Fuel Selection Use good quality diesel fuel from a reputable supplier in your vehicle. Federal law requires
that you must fuel this vehicle with Ultra Low Sulfur Highway Diesel fuel (15 ppm Sulfur
maximum) and prohibits the use of Low Sulfur Highway Diesel fuel (500 ppm Sulfur
maximum) to avoid damage to the emissions control system.
For most year-round service, No. 2 diesel fuel meeting ASTM specification D-975 Grade S15
will provide good performance. We recommend you use a blend of up to 5% biodiesel,
meeting ASTM specification D-975 with your diesel engine.
This vehicle is compatible with
biodiesel blends greater than 5% but no greater than 20% biodiesel meeting ASTM
specification D-7467 provided the shortened maintenance intervals are followed as directed.
Diesel Exhaust
FluidMOPAR® Diesel Exhaust Fluid (API Certified) (DEF) or equivalent that has been API
Certified to the ISO 22241 standard. Use of fluids not API Certified to ISO 22241 may result
in system damage.
5
MAINTAINING YOUR VEHICLE 123
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STARTING AND OPERATING
CONTENTS
STARTING PROCEDURES................202
▫Manual Transmission — If Equipped.......203
▫Automatic Transmission — If Equipped.....203
▫Keyless Enter-N-Go™ — If Equipped.......203
▫Extreme Cold Weather..................207
▫Normal Starting Procedure — Engine Manifold
Air Temperature Above 66° F (19° C)........208
▫Starting Procedure — Engine Manifold Air
Temperature 0°F To 66°F (–18°C to 19°C).....209
▫Starting Procedure — Engine Manifold Air
Temperature Below 0°F (-18°C)............211▫Starting Fluids........................213
NORMAL OPERATION — DIESEL ENGINE . . .214
▫Cold Weather Precautions................214
▫Engine Idling........................217
▫Stopping The Engine...................218
▫Idle Shutdown........................220
▫Programmable Maximum Vehicle Speed
(Chassis Cab Only)....................220
▫Operating Precautions..................220
4
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Starting Fluids
WARNING!
Starting fluids or flammable liquids must never be
used in the Cummins® diesel engine (see Warning
label). Never pour diesel fuel, flammable liquid, start-
ing fluids (ether) into the air cleaner canister, air intake
piping, or turbocharger inlet in an attempt to start the
vehicle. This could result in a flash fire and explosion
causing serious personal injury and engine damage.
The engine is equipped with an automatic electric air
preheating system. If the instructions in this manual are
followed, the engine should start in all conditions.
WARNING!
•Do not leave children or animals inside parked
vehicles in hot weather. Interior heat build up may
cause serious injury or death.
•When leaving the vehicle, always make sure the
ignition is in the OFF position, remove the key fob
from the vehicle, and lock the vehicle.
•Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing children to
be in a vehicle unattended is dangerous for a
number of reasons. A child or others could be
seriously or fatally injured. Children should be
warned not to touch the parking brake, brake pedal
or the transmission gear selector. Do not leave the
key fob in or near the vehicle (or in a location
(Continued)
4
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Diesel Exhaust Fluid Storage
Diesel Exhaust Fluid (DEF) is considered a very stable
product with a long shelf life. If DEF is kept in tempera-
tures between 10° and 90°F (-12° and 32°C), it will last a
minimum of one year.
DEF is subject to freezing at the lowest temperatures. For
example, DEF may freeze at temperatures at or below 12°
F (-11° C). The system has been designed to operate in
this environment.
NOTE:When working with DEF, it is important to know
that:
•Any containers or parts that come into contact with
DEF must be DEF compatible (plastic or stainless
steel). Copper, brass, aluminum, iron or non-stainless
steel should be avoided as they are subject to corrosion
by DEF.
•If DEF is spilled, it should be wiped up completely.
Adding Diesel Exhaust Fluid
The DEF gauge (located on the instrument cluster) will
display the level of DEF remaining in the tank. Refer to
“Instrument Cluster” and “Instrument Cluster Descrip-
tions” in “Understanding Your Instrument Panel” for
further information.
NOTE:Driving conditions (altitude, vehicle speed, load,
etc.) will effect the amount of DEF that is used in your
vehicle.
DEF Fill Procedure
NOTE:Refer to “Fluids, Lubricants, and Genuine Parts”
in “Maintaining Your Vehicle” for the correct fluid type.
1. Remove cap from DEF tank (located on drivers side of
the vehicle or in fuel door).
258 STARTING AND OPERATING
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▫Manual Transmission — If Equipped........318
▫Automatic Transmission — If Equipped......318
▫Noise Control System Required Maintenance &
Warranty...........................322
FLUID CAPACITIES....................327FLUIDS, LUBRICANTS AND GENUINE
PARTS ..............................328
▫Engine.............................328
▫Chassis............................330
288 MAINTAINING YOUR VEHICLE