Extreme Cold Weather; Normal Starting Procedure Engine Manifold Air Temperature Above 66° F (19° C) - RAM 2500 2023 Owner's Manual

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130
STARTING AND OPERATING
Keyless Enter 'n Go™ Starting Procedure —
Engine Manifold Air Temperature 0° F To
66° F (–18° C to 19° C)
NOTE:
The temperature displayed in the instrument cluster does
not necessarily reflect the engine manifold air
temperature
page 104. When engine temperatures fall
Ú
below 66°F (19°C) the Wait To Start Indicator Light will
remain on indicating the intake air heater system is active.
Follow the steps in the "Normal Starting" procedure
except:
1.
Pushing the ENGINE START/STOP button with the
driver's foot on the brake will move the ignition from
OFF or ACC to ON/RUN, and will illuminate the Wait
To Start Indicator Light. The engine will not
immediately crank, this is normal operation.
2.
The Wait To Start Indicator Light will remain on for a
period of time that varies depending on the engine
temperature.
3.
While the Wait To Start Indicator Light is on, the
instrument cluster will additionally display a gauge or
bar whose initial length represents the full Wait to
Start time period. Its length will decrease until it
disappears when the Wait to Start time has elapsed.
CAUTION!
If the Water in Fuel Indicator Light remains on, DO NOT
START the engine before you drain the water from the
fuel filters to avoid engine damage
Ú
4.
After the engine Wait To Start Indicator Light goes off,
the engine will automatically crank.
Do not crank the engine for more than 25 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.
5.
After engine start-up, check to see that there is oil
pressure.
6.
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.
 The engine will not automatically crank after the engine
Wait To Start Indicator Light goes off if a door or the
hood is ajar.
 If the engine stalls, or if the ignition switch is left ON for
more than two minutes after the Wait To Start Indicator
Light goes out, reset the intake air heater by turning the
ignition switch to the OFF position for at least five
seconds and then back ON. Repeat steps 1 through 6
of "Keyless Enter 'n Go™ Starting Procedure – Engine
Manifold Air Temperature 0° F To 66° F (–18° C to
19° C)."
page 387.
CAUTION!
E
C
W
XTREME
OLD
EATHER
The Cummins® Turbo Diesel engine is equipped with
several features designed to assist cold weather starting
and operation:
 The engine block heater is a resistance heater installed
in the water jacket of the engine just above and behind
the oil filter. It requires a 110–115 Volt AC electrical
outlet with a grounded, three-wire extension cord.
NOTE:
The engine block heater cord is a factory installed option.
If your vehicle is not equipped, heater cords are available
from an authorized Mopar® dealer.
 A 12 Volt heater built into the fuel filter housings aid in
preventing fuel gelling. It is controlled by a built-in ther-
mostat.
 An intake air heater system both improves engine
starting and reduces the amount of white smoke
generated by a warming engine.
N
S
P
ORMAL
TARTING
ROCEDURE
E
M
A
T
NGINE
ANIFOLD
IR
EMPERATURE
A
66° F (19° C)
BOVE
Observe the instrument panel cluster lights when starting
the engine.
1.
Always apply the parking brake.
2.
Shift into PARK for an automatic transmission.
3.
Place the ignition switch in the ON/RUN position and
watch the instrument panel cluster lights.

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3500 2023

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