RAM CHASSIS CAB 2024, Owner'S Manual

Page: 106 / 360

WARNING!
•
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 num-
ber 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 gear
selector. Do not leave the key fob in or near the
vehicle (or in a location accessible to children),
and do not leave the ignition of a vehicle equipped
with Keyless Enter ‘n Go™ in the ACC or ON/RUN
position. A child could operate power windows,
other controls, or move the vehicle.
NORMAL OPERATION — DIESEL ENGINE
Observe the following when the engine is operating.
•
All message center lights are off.
•
Malfunction Indicator Light (MIL) is off.
•
Engine oil pressure is above 10 psi (69 kPa) at idle.
•
Voltmeter operation:
The voltmeter may show a gauge fluctuation at various
engine temperatures. This cycling operation is caused
by the post-heat cycle of the intake manifold heater
system. The number of cycles and the length of the
cycling operation is controlled by the engine control
module. Post-heat operation can run for several min-
utes, and then the electrical system and voltmeter
needle will stabilize.
The cycling action will cause temporary dimming of the
headlamps, interior lamps, and also a noticeable reduc-
tion in blower motor speed.
COLD WEATHER PRECAUTIONS
Operation in ambient temperature below 32°F (0°C)
may require special considerations. The following
charts suggest these options:
Fuel Operating Range
NOTE:
Use Ultra Low Sulfur Diesel (ULSD) Fuels
ONLY.
*Number 1 ULSD Fuel should only be used where
extended arctic conditions (0°F/-18°C) exist.
NOTE:
•
Use of Climatized ULSD or Number 1 ULSD Fuel
results in a noticeable decrease in fuel economy.
•
Climatized ULSD Fuel is a blend of Number 2 ULSD
and Number 1 ULSD Fuels which reduces the tem-
perature at which wax crystals form in fuel.
•
The fuel grade should be clearly marked on the
pump at the fuel station.
•
The engine requires the use of
ULSD Fuel
. Use of
incorrect fuel could result in engine and exhaust
system damage
page 334.
•
If climatized or diesel Number 1 ULSD Fuel is not avail-
able, and you are operating below (20°F/-6°C), in sus-
tained arctic conditions, Mopar® Premium Diesel Fuel
Treatment (or equivalent) is recommended to avoid
gelling (see Fuel Operating Range Chart).
•
Under some circumstances increased engine noise
may be audible in the seconds following a cold start.
This is most likely to occur when using fuel that isn't
blended for the ambient temperature present. This
may occur on an unseasonably cold day or when a
truck is fueled in a warmer climate and driven to a
colder climate. The noise can typically be prevented
by using Mopar® Premium Diesel Fuel Treatment as
recommended (see Fuel Operating Range Chart).
Engine Oil Usage
For the correct engine oil viscosity page 287.
Winter Front Cover Usage
A Winter front or cold weather cover is to be used in
ambient temperatures below 32°F (0°C), especially
during extended idle conditions. This cover is equipped
with four flaps for managing total grille opening in vary-
ing ambient temperatures. If a Winter front or cold
weather cover is to be used the flaps should be left in
the full open position to allow air flow to the charge air
cooler and automatic transmission oil cooler. When
ambient temperatures drop below 0°F (-17°C) the four
flaps need to be closed. A suitable cold weather cover
is available from an authorized dealer.
Fuel Operating Range Chart
104 STARTING AND OPERATING