Extreme Cold Weather; Normal Starting Procedure Engine Manifold Air Temperature Above 66° F (19° C) - Dodge RAM 2500 2022 Owner's Manual

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 thermostat.
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.
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 page 406.
4. Place the ignition switch in the START position
and crank the engine. Do not press the
accelerator during starting.
CAUTION!
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. Check that the Oil Pressure Warning Light has
turned off.
6. Release the parking brake.
STARTING AND OPERATING
S P — E
TARTING ROCEDURE
M A T
ANIFOLD IR EMPERATURE
66°F (–18°C 19°C)
TO
NOTE:
The temperature displayed in the instrument
cluster does not necessarily reflect the engine
manifold air temperature Ú page 109. When
engine temperatures fall below 66°F (19°C) the
"Wait To Start" telltale will remain on indicating the
intake air heater system is active.
Follow the steps in the "Normal Starting"
procedure except:
1. The "Wait To Start" telltale will remain on for
a period of time that varies depending on the
engine temperature.
2. While the "Wait To Start" telltale 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 page 406.
137
NGINE
0°F T
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