2021 RAM CHASSIS CAB oil pressure

GETTING TO KNOW YOUR INSTRUMENT PANEL95
Stored Messages
Push and release the up or down arrow
button until the Messages Menu item is
highlighted. This feature shows the number of
stored warning messages. Push and release the
right or left arrow button to cycle through
stored messages.
Screen Setup Menu Item
Push and release the up or down arrow
button until the Screen Setup menu item is
highlighted in the instrument cluster display.
Push and release the right arrow button to
enter the Screen Setup submenu. The Screen
Setup feature allows you to change what
information is displayed in the instrument
cluster as well as the location that information
is displayed.
Current Gear — If Equipped
Off
On
Odometer
Unit Without Decimal
Unit With Decimal Favorite Menu
Speedometer
Vehicle Info
Driver Assist (Show/Hide) — If Equipped
Fuel Economy (Show/Hide)
Trip Info (Show/Hide)
Trailer Tow (Show/Hide)
Audio (Show/Hide)
Messages
Screen Setup
Vehicle Settings — If Equipped
Commercial Settings — If Equipped
NOTE:
Menus with (Show/Hide) can push the right
arrow button to choose whether to show or hide
this menu in the instrument cluster display. Upper Left — If Equipped
None
Compass — If Equipped
Outside Temp — If Equipped
Time
Range To Empty
Average Econ
Current Econ
Trip A Distance
Trip B Distance
Trailer Trip — If Equipped
Trailer Brake — If Equipped
Oil Pressure — If Equipped
Coolant Temperature — If Equipped
Oil Temperature — If Equipped
Battery Voltage — If Equipped
Transmission Temperature — If Equipped
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96GETTING TO KNOW YOUR INSTRUMENT PANEL
Oil Life — If Equipped
Exhaust Brake — If Equipped
Turbo Boost — If Equipped
Fuel Filter Life — If Equipped
Center
None
Compass
Outside Temp
Time
Range To Empty
Average Econ
Current Econ
Trip A Distance
Trip B Distance
Trailer Trip — If Equipped
Audio
Speedometer
Menu Title Upper Right
None
Compass — If Equipped
Outside Temp
Time
Range To Empty
Average Econ
Current Econ
Trip A Distance
Trip B Distance
Trailer Trip — If Equipped
Trailer Brake — If Equipped
Oil Pressure — If Equipped
Coolant Temperature — If Equipped
Oil Temperature — If Equipped
Battery Voltage — If Equipped
Transmission Temperature — If Equipped
Oil Life — If Equipped
Exhaust Brake — If Equipped
Turbo Boost — If Equipped
Fuel Filter Life — If Equipped
Left Side — If Equipped
None
Range
Average Econ
Menu Icon
Coolant Temperature
Oil Temperature
Transmission Temperature
Oil Life
Fuel Filter Life — If Equipped

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GETTING TO KNOW YOUR INSTRUMENT PANEL97
Right Side — If Equipped
None
Range
Average Econ
Menu Icon
Coolant Temperature
Oil Temperature
Transmission Temperature
Oil Life
Fuel Filter Life — If Equipped
Lower Left — If Equipped
None
Compass
Outside Temp
Time
Range To Empty
Average Econ
Current Econ
Trip A Distance
Trip B Distance
Trailer Trip
Trailer Brake
Oil Pressure
Coolant Temperature
Oil Temperature
Battery Voltage
Transmission Temperature
Oil Life
Exhaust Brake — If Equipped
Turbo Boost — If Equipped
Fuel Filter Life — If Equipped
Lower Right — If Equipped
None
Compass
Outside Temp
Time
Range To Empty
Average Econ
Current Econ
Trip A Distance
Trip B Distance
Trailer Trip
Trailer Brake
Oil Pressure
Coolant Temperature
Oil Temperature
Battery Voltage
Transmission Temperature
Oil Life
Exhaust Brake — If Equipped
Turbo Boost — If Equipped
Fuel Filter Life — If Equipped
Restore Defaults
Cancel
Restore
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108GETTING TO KNOW YOUR INSTRUMENT PANEL
Vehicles equipped with the Anti-Lock Brake
System (ABS) are also equipped with Electronic
Brake Force Distribution (EBD). In the event of
an EBD failure, the Brake Warning Light will turn
on along with the ABS Light. Immediate repair to
the ABS system is required.

Operation of the Brake Warning Light can be
checked by turning the ignition switch from the
OFF position to the ON/RUN position. The light
should illuminate for approximately two seconds.
The light should then turn off unless the parking
brake is applied or a brake fault is detected. If the
light does not illuminate, have the light inspected
by an authorized dealer.

The light also will turn on when the parking
brake is applied with the ignition switch in the
ON/RUN position. NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake
application.
Hood Open Warning Light
This warning light will illuminate when
the hood is ajar/open and not fully
closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
Vehicle Security Warning Light — If
Equipped
This light will flash at a fast rate for
approximately 15 seconds when the
vehicle security alarm is arming, and
then will flash slowly until the vehicle
is disarmed.
Engine Coolant Temperature Warning
Light
This warning light warns of an
overheated engine condition. If the
engine coolant temperature is too
high, this indicator will illuminate and
a single chime will sound. If the temperature reaches the upper limit, a continuous chime will
sound for four minutes or until the engine is
able to cool, whichever comes first.
If the light turns on while driving, safely pull over
and stop the vehicle. If the Air Conditioning
(A/C) system is on, turn it off. Also, shift the
transmission into NEUTRAL and idle the vehicle.
If the temperature reading does not return to
normal, turn the engine off immediately and call
for service Ú
page 346.
Battery Charge Warning Light
This warning light will illuminate when
the battery is not charging properly.
If it stays on while the engine is
running, there may be a malfunction
with the charging system. Contact an
authorized dealer as soon as possible.
This indicates a possible problem with the
electrical system or a related component.
Oil Pressure Warning Light
This warning light will illuminate to
indicate low engine oil pressure. If the
light turns on while driving, stop the
vehicle, shut off the engine as soon as
possible, and contact an authorized dealer.
A chime will sound when this light turns on.
WARNING!
Driving a vehicle with the red brake light on is
dangerous. Part of the brake system may
have failed. It will take longer to stop the
vehicle. You could have a collision. Have the
vehicle checked immediately.

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124STARTING AND OPERATING
ENGINE START/STOP Button Functions — With
Driver’s Foot OFF The Brake Pedal (In PARK Or
NEUTRAL Position)

The ENGINE START/STOP button operates similar
to an ignition switch. It has three positions, OFF,
ACC, RUN. To change the ignition switch positions
without starting the vehicle and use the
accessories follow these steps:

1. Start with the ignition in the OFF position.

2. Push the ENGINE START/STOP button once
to change the ignition to the ACC position.
3. Push the ENGINE START/STOP button a second time to change the ignition to the
RUN position.
4. Push the ENGINE START/STOP button a third time to return the ignition to the OFF
position.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 Ú page 90. When
engine temperatures fall below 66°F (19°C)
the “Wait To Start” telltale will remain on indi -
cating the intake air heater system is active.
Follow the steps in the “Normal Starting”
procedure except:

1. Pushing the engine start button with the driver’s foot on the brake will move the
ignition from OFF or ACC to RUN, and
will illuminate the "Wait to Start" telltale.
The engine will not immediately crank, this
is normal operation.

2. The “Wait to Start" telltale will remain on for a period of time that varies depending on
the engine temperature.
3. 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.
4. After the engine “Wait to Start” telltale goes off, the engine will automatically crank.
5. After engine start-up, check to see that there is oil pressure.
6. Release the parking brake and drive.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 375.
CAUTION!

Do not crank 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.

21_DPF_OM_EN_USC_t.book Page 124

STARTING AND OPERATING125
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" telltale 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” telltale goes out, reset the
intake air heater by turning the ignition switch
to the OFF position for at least 5 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).”

EXTREME COLD WEATHER
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 hous -
ings 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.
NORMAL STARTING PROCEDURE —
E
NGINE MANIFOLD AIR TEMPERATURE
A
BOVE 66°F (19°C)
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 position
and watch the instrument panel cluster
lights.
4. Place the ignition switch in the START position and crank the engine. Do not press
the accelerator during starting.
5. Check that the oil pressure warning light has turned off.
6. Release the parking brake.
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 375.
CAUTION!

Do not crank 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.

4

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126STARTING AND OPERATING
STARTING PROCEDURE — ENGINE
M
ANIFOLD 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 Ú page 90. When
engine temperatures fall below 66°F (19°C)
the “Wait To Start” telltale will remain on indi -
cating 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. 3. After the “Wait to Start” telltale goes off,
place the ignition switch in the START
position. Do not press the accelerator
during starting.
4. After engine start-up, check that the oil pressure warning light has turned off.
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.

Automatic equipped vehicles with optional
Keyless Enter-N-Go – If the ENGINE START/
STOP button is pushed once while in PARK
with the ignition off and driver’s foot on the
brake pedal, the vehicle will automatically
crank and start after the “Wait to Start” time
has elapsed. If it is desired to abort the start
process before it completes, the driver’s foot
should be fully removed from the brake pedal
prior to pushing the start button again in order
for the ignition to move directly to off.
If the engine stalls, or if the ignition switch is
left ON for more than two minutes after the
“Wait To Start” telltale 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 5 of
“Starting Procedure – Engine Manifold Air
Temperature 0°F To 66°F (–18°C to 19°C).”

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 375.
CAUTION!

Do not crank 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.

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128STARTING AND OPERATING
STARTING FLUIDS
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.
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 minutes,
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 reduction in blower motor
speed.
WARNING!
Starting fluids or flammable liquids must
never be used in the Cummins diesel engine
(see Warning label). Never pour diesel fuel,
flammable liquid, starting 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.
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 remove
the key fob and lock your 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 gear
selector. Do not leave the key fob in or near
the vehicle (or in a location accessible to chil -
dren), and do not leave the ignition of a
vehicle equipped with Keyless Enter-N-Go in
the ACC or ON/RUN mode. A child could
operate power windows, other controls, or
move the vehicle.

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