coolant temperature Ram 5500 Chassis Cab 2012 Diesel Supplement

Information Center (EVIC)/Customer-Programmable
Features (System Setup)” in “Understanding Your Instru-
ment Panel”.
ENGINE BREAK-IN RECOMMENDATIONS
The Cumminsturbocharged diesel engine does not
require a break-in period due to its construction. Normal
operation is allowed, providing the following recommen-
dations are followed:
•Warm up the engine before placing it under load.
•Do not operate the engine at idle for prolonged
periods.
•Use the appropriate transmission gear to prevent
engine lugging.
•Observe vehicle oil pressure and temperature indica-
tors.
•Check the coolant and oil levels frequently.
•Vary throttle position at highway speeds when carry-
ing or towing significant weight.
NOTE: Light duty operation such as light trailer towing
or no load operation will extend the time before the
engine is at full efficiency. Reduced fuel economy and
power may be seen at this time.
For additional vehicle break-in requirements, refer to
“Trailer Towing” in “Starting and Operating” of the
Owners Manual.
Because of the construction of the Cummins turbo-
charged diesel engine, engine run-in is enhanced by
loaded operating conditions which allow the engine
parts to achieve final finish and fit during the first
6,000 miles (10 000 km).
12 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

INSTRUMENT CLUSTER DESCRIPTION
1. Tachometer
The tachometer indicates engine speed in revolutions per
minute.
CAUTION!
Do not operate the engine with the tachometer
pointer at high RPM for extended periods. Engine
damage may occur.
2. Turn Signal Indicator Light The arrow will flash with the exterior turn signal
when the turn signal lever is operated.
NOTE:
•A continuous chime will sound if the vehicle is driven
more than 1 mile (1.6 km) with either turn signal on.
•Check for an inoperative outside light bulb if either
indicator flashes at a rapid rate.
3. Fuel Gauge
Shows level of fuel in tank when ignition switch is in the
ON position.
4. Temperature Gauge
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily.
The gauge pointer will likely indicate a higher tempera-
ture when driving in hot weather, up mountain grades,
or when towing a trailer. It should not be allowed to
exceed the upper limits of the normal operating range.
3
UNDERSTANDING YOUR INSTRUMENT PANEL 15

•Service DEF System Engine Will Not Start – See
Dealer— This message will continuously display
when the mileage counter reaches zero, and will be
accompanied by a periodic chime. The engine will not
restart after it has been turned off, your vehicle will
require towing, see your authorized dealer for service.
NOTE: When this message is displayed, the engine will
no longer start after it has been turned off.
Vehicle Information (Customer Information
Features)
Press and release the UP or DOWN button until “Vehicle
Info” displays in the EVIC and press the SELECT button.
Press the UP and DOWN button to scroll through the
available information displays, then press SELECT to
display anyone of the following choices.
•DEF Fluid Level – Chassis Cab Only
Displays the Diesel Exhaust Fluid (DEF) fluid level.
•Coolant Temp
Displays the actual coolant temperature.
•Oil Pressure
Displays the actual oil pressure.
•Trans Temperature
Displays the actual transmission sump temperature.
•Engine Hours
Displays the hours of engine operation.
30 UNDERSTANDING YOUR INSTRUMENT PANEL

CAUTION!
Do not crank engine for more than 15 seconds at a
time or starter motor damage may result. Turn the
ignition switch to the OFF position and wait at least
two minutes for the starter to cool before repeating
start procedure.
3. After engine start-up, check to see that there is oil
pressure.
4. Allow the engine to idle about three minutes until the
manifold heaters have completed the post-heat cycle.
5. Release the parking brake and drive.
NOTE:
•Engine idle speed will automatically increase to 1,000
RPM and engage the Variable Geometry Turbocharger
at low coolant temperatures to improve engine warm-
up.
•If the engine stalls, or if the ignition switch is left ON
for more than two minutes after the “Wait To Start
Light” goes out, reset the grid heaters by turning the
ignition switch to the OFF position for at least five
seconds and then back ON. Repeat steps 1 through 5 of
“Starting Procedure – Engine Manifold Air Tempera-
ture Below 66°F (19°C).”
Starting Procedure – Engine Manifold Air
Temperature Below 0°F (-18°C)
In extremely cold weather below 0°F (-18°C) it may be
beneficial to cycle the manifold heaters twice before
attempting to start the engine. This can be accomplished
by turning the ignition OFF for at least five seconds and
then back ON after the “Wait To Start Light” has turned
off, but before the engine is started. However, excessive
cycling of the manifold heaters will result in damage to
the heater elements or reduced battery voltage.
38 STARTING AND OPERATING

NOTE: If multiple pre-heat cycles are used before
starting, additional engine run time may be required to
maintain battery state of charge at a satisfactory level.
1. If the engine stalls after the initial start, the ignition
must be turned to the OFF position for at least five
seconds and then to the ON position to recycle the
manifold heaters.
NOTE:Excessive white smoke and poor engine perfor-
mance will result if manifold heaters are not recycled.
2. Heat generated by the manifold heaters dissipates
rapidly in a cold engine. If more than two minutes pass
between the time the “Wait To Start Light” turns off and
the engine is started, recycle the manifold heaters by
turning the ignition switch to the OFF position for at least
five seconds and then back ON. 3. If the vehicle is driven and vehicle speed exceeds
19 mph (31 km/h) before the manifold heater post-heat
(after start) cycle is complete, the manifold heaters will
shut off.
4. If the engine is started before the “Wait To Start Light”
turns off, the preheat cycle will turn off.
5. If the engine is cranked for more than 10 seconds, the
post-heat cycle will turn off.
NOTE:
•Engine idle speed will automatically increase to 1,000
RPM and engage the Variable Geometry Turbocharger
at low coolant temperatures to improve engine warm-
up.
4
STARTING AND OPERATING 39

Battery Blanket Usage
A battery loses 60% of its cranking power as the battery
temperature decreases to 0°F (-18°C). For the same de-
crease in temperature, the engine requires twice as much
power to crank at the same RPM. The use of 120 VAC
powered battery blankets will greatly increase starting
capability at low temperatures. Suitable battery blankets
are available from your authorized MOPARdealer.
Engine Warm-Up
Avoid full throttle operation when the engine is cold.
When starting a cold engine, bring the engine up to
operating speed slowly to allow the oil pressure to
stabilize as the engine warms up.
NOTE:High-speed, no-load running of a cold engine
can result in excessive white smoke and poor engine
performance. No-load engine speeds should be kept
under 1,200 RPM during the warm-up period, especially
in cold ambient temperature conditions. Your vehicle is equipped with a turbo speed limiter, this
feature limits the engine speed to 1,200 RPM when
engine coolant temperatures are below 70°F (21°C). This
feature is designed to protect the turbocharger from
damage and will only operate in PARK or NEUTRAL.
If temperatures are below 32°F (0°C), operate the engine
at moderate speeds for five minutes before full loads are
applied.
NOTE:•If ambient temperatures are low and the coolant
temperature is below 180°F (82°C), the engine idle
speed will slowly increase to 1,000 RPM after two
minutes of idle, if the following conditions are met:
•foot is off brake pedal and throttle pedal
•automatic transmission is in PARK
•vehicle speed is zero
•Applying the throttle will cancel fast idle
4
STARTING AND OPERATING 43

Snow Plow Mode
Snow Plow Mode can be activated when the vehicle has
a snow plow installed. This mode fully engages the fan
clutch to increase the airflow when the plow is attached
to the vehicle.
NOTE:There may be an increase in fan noise and a
decrease in fuel economy may result when using this
feature. The fan clutch operation can be initiated by
performing the following button sequence.
1. Turn the ignition key to the on position or start the
vehicle.
2. Pull in the Cruise Control “Cancel” button/lever and
hold. While holding the Cruise Control “Cancel”, push
the “Exhaust Brake” button twice within five seconds.
Repeat this sequence four times. The chime will sound
twice as an audible indicator that the function is engaged. 3. To disable the function, repeat Step 2. The chime will
sound four times as an audible indicator that the function
is disengaged.
Operating Precautions
Avoid Overheating The Engine
The temperature of the engine coolant (antifreeze) (a
mixture of 50% ethylene-glycol and 50% water) must not
exceed the normal range of the temperature gauge 240°F
(116°C) with a 16 psi (110 kPa) radiator cap.
Usually the engine coolant (antifreeze) temperature indi-
cated during operation will be to the left of center in the
normal range of the gauge.
Avoid Low Coolant Temperature Operation
Continual operation at low engine coolant (antifreeze)
temperature below the normal range on the gauge 140°F
(60°C) can be harmful to the engine. Low engine coolant
4
STARTING AND OPERATING 47

Do Not Operate The Engine With Failed Parts
Practically all failures give some warning before the parts
fail. Be on the alert for changes in performance, sounds,
and visual evidence that the engine requires service.
Some important clues are:
•engine misfiring or vibrating severely
•sudden loss of power
•unusual engine noises
•fuel, oil or coolant leaks
•sudden change, outside the normal operating range, in
the engine operating temperature
•excessive smoke
•oil pressure drop
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms engine coolant and
permits quicker starts in cold weather. Connect the heater
cord to a ground-fault interrupter protected 110–115 Volt
AC electrical outlet with a grounded, three-wire exten-
sion cord.
The engine block heater cord is routed under the hood to
the right side and can be located just behind the grille
near the headlamp.
NOTE:The engine block heater cord is a factory in-
stalled option. If your vehicle is not equipped, heater
cords are available from your authorized MOPAR
dealer.
The block heater must be plugged in at least one hour to
have an adequate warming effect on the coolant.
4
STARTING AND OPERATING 49

be in the ON position, and the coolant temperature must
be below 180°F (82°C) and ambient temperature below
60°F (16°C).
AUTOMATIC TRANSMISSION — IF EQUIPPED
CAUTION!
Damage to the transmission may occur if the follow-
ing precautions are not observed:
•Shift into PARK only after the vehicle has come to
a complete stop.
•Shift into or out of REVERSE only after the
vehicle has come to a complete stop and the engine
is at idle speed.
•Do not shift between PARK, REVERSE, NEU-
TRAL, or DRIVE into any forward gear when the
engine is above idle speed.(Continued)
CAUTION! (Continued)
•Before shifting into any gear, make sure your foot
is firmly pressing on the brake pedal.
WARNING!
•Unintended movement of a vehicle could injure
those in and near the vehicle. As with all vehicles,
you should never exit a vehicle while the engine is
running. Before exiting a vehicle, apply the park-
ing brake, shift the transmission into PARK, and
remove the key fob. Once the key fob is removed,
the shift lever is locked in the PARK position,
securing the vehicle against unwanted movement.
Furthermore, you should never leave unattended
children inside a vehicle.(Continued)
52 STARTING AND OPERATING

WARNING!
Battery posts, terminals, and related accessories con-
tain lead and lead compounds. Always wash hands
after handling the battery.
Battery Blanket Usage
A battery loses 60% of its cranking power as the battery
temperature decreases to 0°F (-18°). For the same de-
crease in temperature, the engine requires twice as much
power to crank at the same RPM. The use of 120 Volt AC
powered battery blankets will greatly increase starting
capability at low temperatures. Suitable battery blankets
are available from your authorized MOPARdealer.
Cooling System
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If
you see or hear steam coming from under the hood,
do not open the hood until the radiator has had time
to cool. Never try to open a cooling system pressure
cap when the radiator is hot.
Engine Coolant Checks
Check the engine coolant (antifreeze) protection every
12 months (before the onset of freezing weather, where
applicable). If the engine coolant (antifreeze) is dirty or
rusty in appearance, the system should be drained,
flushed and refilled with fresh engine coolant (anti-
freeze). Check the front of the A/C condenser for any6
MAINTAINING YOUR VEHICLE 115