lights RAM CHASSIS CAB 2023 Owner's Guide

STARTING AND OPERATING119
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.
4. After the engine Wait To Start Indicator Light 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.
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 5 seconds and then
back ON. Repeat steps 1 through 6 of “Keyless
Enter ‘n Go™ Starting Procedure – Engine Mani -
fold 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 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.
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/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 360.
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.
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 Úpage 360.
4

23_DPF_OM_EN_USC_t.book Page 119

122STARTING AND OPERATING
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.
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.
Fuel Operating Range Chart

*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 temperature at which wax crystals form in
fuel.
Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing chil -
dren 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 position. A child could
operate power windows, other controls, or
move the vehicle.
WARNING!

23_DPF_OM_EN_USC_t.book Page 122

STARTING AND OPERATING141
This electronically shifted transfer case is designed
to be driven in the two-wheel drive position (2WD)
for normal street and highway conditions on dry
hard surfaced roads. Driving the vehicle in
two-wheel drive will have greater fuel economy
benefits as the front axle is not engaged in
two-wheel drive.
When additional traction is required, the transfer
case 4WD HIGH and 4WD LOW positions can be
used to maximize torque to the front driveshaft,
forcing the front and rear wheels to rotate at the
same speed. This is accomplished by pushing the
desired position on the four-wheel drive control
switch.
For specific shifting instructions Ú page 144.
The 4WD HIGH and 4WD LOW positions are
designed for loose, slippery road surfaces only.
Driving in the 4WD HIGH and 4WD LOW positions
on dry, hard surfaced roads may cause increased
tire wear and damage to the driveline components.
NOTE:The transfer case N (Neutral) button is located in
the center of the four-wheel drive Control Switch
and is pushed by using a ballpoint pen or similar
object. The transfer case N (Neutral) position is to
be used for recreational towing only Ú page 194.Transfer Case Position Indicator Lights
The Transfer Case Position Indicator Lights (4WD
and 4WD LOW) are located in the instrument
cluster and indicate the current and desired
transfer case selection. When you select a
different transfer case position, the indicator lights
will do the following:
If All Of The Following Shift Conditions Are Met:


1. The current position indicator light will turn off.

2. The selected position indicator light will flash until the transfer case completes the shift.
3. When the shift is complete, the indicator light for the selected position will stop flashing and
remain on.
If One Or More Of The Following Shift Conditions
Are Not Met:

1. The indicator light for the current position will remain on.

2. The newly selected position indicator light will continue to flash.
3. The transfer case will not shift.
NOTE:Before retrying a selection, make certain that all
the necessary requirements for selecting a new
transfer case position have been met. To retry the selection, push the current position, wait five
seconds, and retry selection Ú
page 144.
The SERV 4WD Warning Light monitors the
electronically shifted four-wheel drive system. If
this light remains on after engine start-up or
illuminates during driving, it means that the
four-wheel drive system is not functioning properly
and that service is required.
NOTE:Do not attempt to make a shift while only the front
or rear wheels are spinning. This could cause
damage to driveline components.
When operating your vehicle in 4WD LOW, the
engine speed is approximately three times that of
the two-wheel drive or 4WD HIGH positions at a
given road speed. Take care not to overspeed the
engine and do not exceed 25 mph (40 km/h).
Proper operation of four-wheel drive vehicles
depends on tires of equal size, type and
circumference on each wheel. Any difference in
tire size can cause damage to the drivetrain.
WARNING!
Always engage the parking brake when powering
down the vehicle if the SERV 4WD Warning Light
is illuminated. Not engaging the parking brake
may allow the vehicle to roll which may cause
personal injury or death.4

23_DPF_OM_EN_USC_t.book Page 141

142STARTING AND OPERATING
Because four-wheel drive provides improved
traction, there is a tendency to exceed safe turning
and stopping speeds. Do not go faster than road
conditions permit.
Shifting Procedure
NOTE:
If any of the requirements to select a new
transfer case position have not been met, the
transfer case will not shift. The position indi -
cator light for the previous position will remain
on and the newly selected position indicator
light will continue to flash until all the require -
ments for the selected position have been met.

If all the requirements to select a new transfer
case position have been met, the current posi -
tion indicator light will turn off, the selected
position indicator light will flash until the
transfer case completes the shift. When the
shift is complete, the position indicator light for
the selected position will stop flashing and
remain on.

2WD TO 4WD HIGH
Push the desired position on the four-wheel drive
control switch to shift the transfer case. Shifts
between two-wheel drive and 4WD HIGH can be
done with the vehicle stopped or in motion. With
the vehicle in motion, the transfer case will
engage/disengage faster if you momentarily
release the accelerator pedal after turning the control switch. If the vehicle is stopped, the ignition
switch must be in the ON/RUN position with the
engine either running or off. This shift cannot be
completed if the ignition switch is in the ACC
position.
NOTE:The four-wheel drive system will not allow shifts
between 2WD/4WD HIGH if the front and/or rear
wheels are spinning (no traction). In this situation,
the selected position indicator light will flash and
the original position indicator light will remain on.
At this time, reduce speed and stop spinning the
wheels to complete the shift.
2WD OR 4WD HIGH TO 4WD LOW
NOTE:
When shifting into or out of 4WD LOW some gear
noise may be heard. This noise is normal and is not
detrimental to the vehicle or occupants.
Shifting can be performed with the vehicle rolling 2
to 3 mph (3 to 5 km/h) or completely stopped. You
can use either of the following procedures:
Preferred Procedure

1. With the engine running, slow the vehicle to 2
to 3 mph (3 to 5 km/h).

2. Shift the transmission into NEUTRAL.
3. While still rolling, push the desired position on the transfer case control switch. 4. After the desired position indicator light is on
(not flashing), shift the transmission back into
gear.
Alternate Procedure

1. Bring the vehicle to a complete stop.

2. With the ignition switch in the ON/RUN position and the engine running, shift the
transmission into NEUTRAL.
3. Push the desired position on the transfer case control switch.
4. After the desired position indicator light is on (not flashing), shift the transmission back into
gear.NOTE:
If Steps 1 or 2 of either the Preferred or Alter -
nate Procedure are not satisfied prior to
attempting the shift, then the desired position
indicator light will flash continuously while the
original position indicator light is on, until all
requirements have been met.
The ignition switch must be in the ON/RUN posi -
tion for a shift to take place and for the position
indicator lights to be operable. If the ignition
switch is not in the ON/RUN position, the shift
will not take place and no position indicator
lights will be on or flashing.

23_DPF_OM_EN_USC_t.book Page 142

144STARTING AND OPERATING
NOTE:The transfer case N (Neutral) button is located on
the lower left hand corner of the four-wheel drive
Control Switch. The transfer case N (Neutral)
position is to be used for recreational towing only
Úpage 194.
Transfer Case Position Indicator Lights
The Transfer Case Position Indicator Lights (4WD
and 4WD LOW) are located in the instrument
cluster and indicate the current and desired
transfer case selection. When you select a
different transfer case position, the indicator lights
will do the following:
If All Of The Following Shift Conditions Are Met:

1. The current position indicator light will turn off.

2. The selected position indicator light will flash until the transfer case completes the shift.
3. When the shift is complete, the indicator light for the selected position will stop flashing and
remain on.
If One Or More Of The Following Shift Conditions
Are Not Met:

1. The indicator light for the current position will remain on.

2. The newly selected position indicator light will continue to flash. 3. The transfer case
will not shift.NOTE:Before retrying a selection, make certain that all
the necessary requirements for selecting a new
transfer case position have been met. To retry the
selection, turn the control switch back to the
current position, wait five seconds, and retry
selection Ú page 144.
The SERV 4WD Warning Light monitors the
electronically shifted four-wheel drive system. If
this light remains on after engine start-up or
illuminates during driving, it means that the
four-wheel drive system is not functioning properly
and that service is required.
NOTE:Do not attempt to make a shift while only the front
or rear wheels are spinning, as this can cause
damage to driveline components. When operating your vehicle in 4WD LOW, the
engine speed is approximately three times that of
the two-wheel drive or 4WD HIGH positions at a
given road speed. Take care not to overspeed the
engine and do not exceed 25 mph (40 km/h).
Proper operation of four-wheel drive vehicles
depends on tires of equal size, type and
circumference on each wheel. Any difference in
tire size can cause damage to the drivetrain.
Because four-wheel drive provides improved
traction, there is a tendency to exceed safe turning
and stopping speeds. Do not go faster than road
conditions permit.
Shifting Procedure
NOTE:
If any of the requirements to select a new
transfer case position have not been met, the
transfer case will not shift. The position indi
-
cator light for the previous position will remain
ON and the newly selected position indicator
light will continue to flash until all the require -
ments for the selected position have been met.
To retry a shift: return the control switch back to
the original position, make certain all shift
requirements have been met, wait five seconds
and try the shift again.WARNING!
Always engage the parking brake when powering
down the vehicle if the SERV 4WD Warning Light
is illuminated. Not engaging the parking brake
may allow the vehicle to roll, which may cause
personal injury.

23_DPF_OM_EN_USC_t.book Page 144

STARTING AND OPERATING145
If all the requirements to select a new transfer
case position have been met, the current posi -
tion indicator light will turn OFF, the selected
position indicator light will flash until the
transfer case completes the shift. When the
shift is complete, the position indicator light for
the selected position will stop flashing and
remain ON.
2WD TO 4WD HIGH
Push the desired position on the four-wheel drive
control switch to shift the transfer case. Shifts
between two-wheel drive and 4WD HIGH can be
done with the vehicle stopped or in motion. With
the vehicle in motion, the transfer case will
engage/disengage faster if you momentarily
release the accelerator pedal after turning the
control switch. If the vehicle is stopped, the ignition
switch must be in the ON/RUN position with the
engine either running or off. This shift cannot be
completed if the ignition switch is in the ACC
position.
NOTE:The four-wheel drive system will not allow shifts
between 2WD/4WD HIGH if the front and/or rear
wheels are spinning (no traction). In this situation,
the selected position indicator light will flash and
the original position indicator light will remain on.
At this time, reduce speed and stop spinning the
wheels to complete the shift.
2WD OR 4WD HIGH TO 4WD LOW
NOTE:
When shifting into or out of 4WD LOW some gear
noise may be heard. This noise is normal and is not
detrimental to the vehicle or occupants.
Shifting can be performed with the vehicle rolling 2
to 3 mph (3 to 5 km/h) or completely stopped. You
can use either of the following procedures:
Preferred Procedure

1. With the engine running, slow the vehicle to 2 to 3 mph (3 to 5 km/h).

2. Shift the transmission into NEUTRAL.
3. While still rolling, push the desired position on the transfer case control switch.
4. After the desired position indicator light is on (not flashing), shift the transmission back into
gear.
Alternate Procedure

1. Bring the vehicle to a complete stop.

2. With the ignition switch in the ON/RUN position and the engine running, shift the
transmission into NEUTRAL.
3. Push the desired position on the transfer case control switch.
4. After the desired position indicator light is on (not flashing), shift the transmission back into
gear.
NOTE:
If Steps 1 or 2 of either the Preferred or Alter -
nate Procedure are not satisfied prior to
attempting the shift, then the desired position
indicator light will flash continuously while the
original position indicator light is on, until all
requirements have been met.
The ignition switch must be in the ON/RUN posi -
tion for a shift to take place and for the position
indicator lights to be operable. If the ignition
switch is not in the ON/RUN position, the shift
will not take place and no position indicator
lights will be on or flashing.
MANUALLY SHIFTED TRANSFER CASE —
I
F EQUIPPED
The transfer case provides four positions:
Two-Wheel Drive High Range (2H)
Four-Wheel Drive Lock High Range (4H)
N (Neutral)
Four-Wheel Drive Low Range (4L)
For additional information on the appropriate use
of each transfer case position, see the information
below:
2H
Two-Wheel Drive High Range — This range is for
normal street and highway driving on dry, hard
surfaced roads.
4

23_DPF_OM_EN_USC_t.book Page 145

STARTING AND OPERATING155

Distance Settings

To increase the distance setting, push the
Distance Increase button and release. Each time
the button is pushed, the distance setting
increases by one bar (longer).
To decrease the distance setting, push the
Distance Decrease button and release. Each time
the button is pushed, the distance setting
decreases by one bar (shorter).
If there is no vehicle ahead, the vehicle will
maintain the set speed. If a slower moving vehicle
is detected in the same lane, the instrument
cluster displays the ACC Set With Target Detected Indicator Light, and the system adjusts vehicle
speed automatically to maintain the distance
setting, regardless of the set speed.
NOTE:If the vehicles Integrated Trailer Brake Module
(ITBM) detects a trailer is connected to the vehicle,
and ACC is enabled, the system will increase the
distance to the longest distance setting (four bars)
by default.
The vehicle will then maintain the set distance
until:
The vehicle ahead accelerates to a speed above
the set speed.
The vehicle ahead moves out of your lane or
view of the sensor.
The distance setting is changed.
The system disengages.
The maximum braking applied by ACC is limited;
however, the driver can always apply the brakes
manually, if necessary.
NOTE:The brake lights will illuminate whenever the ACC
system applies the brakes.
A Proximity Warning will alert the driver if ACC
predicts that its maximum braking level is not
sufficient to maintain the set distance. If this
occurs, a visual alert “BRAKE!” will flash in the
instrument cluster display and a chime will sound while ACC continues to apply its maximum braking
capacity.
NOTE:The “BRAKE!” screen in the instrument cluster
display is a warning for the driver to take action
and does not mean that the Forward Collision
Warning system is applying the brakes autono-
mously.
Overtake Aid
When driving with ACC engaged and following a
vehicle, the system will provide an additional
acceleration up to the ACC set speed to assist in
passing the vehicle. This additional acceleration is
triggered when the driver utilizes the left turn
signal and will only be active when passing on the
left hand side.
ACC Operation At Stop
If the ACC system brings your vehicle to a standstill
while following a vehicle ahead, your vehicle will
resume motion, without any driver interaction, if
the vehicle ahead starts moving within two
seconds of your vehicle coming to a standstill.
If the vehicle in front does not start moving within
two seconds of your vehicle coming to a standstill,
the ACC with Stop system will cancel and the
brakes will release. A cancel message will display
on the instrument cluster display and produce a
warning chime. The driver must now manually
operate the vehicle’s accelerator and brakes.
1 — Longest Distance Setting (Four Bars)
2 — Medium Distance Setting (Two Bars)
3 — Long Distance Setting (Three Bars)
4 — Short Distance Setting (One Bar)
4

23_DPF_OM_EN_USC_t.book Page 155

190STARTING AND OPERATING
Display Messages
The trailer brake control interacts with the
instrument cluster display. Display messages,
along with a single chime, will be displayed when a
malfunction is determined in the trailer
connection, trailer brake control, or on the trailer
Ú page 89.
NOTE:
An aftermarket controller may be available for
use with trailers with air or EOH trailer brake
systems. To determine the type of brakes on
your trailer and the availability of controllers,
check with your trailer manufacturer or dealer.
Removal of the ITBM will cause errors and it
may cause damage to the electrical system and
electronic modules of the vehicle. See an autho -
rized dealer if an aftermarket module is to be
installed.
Towing Requirements — Trailer Lights And
Wiring
Whenever you pull a trailer, regardless of the trailer
size, stoplights and turn signals on the trailer are
required for motoring safety.
The Trailer Tow Package may include a four- and
seven-pin wiring harness. Use a factory approved
trailer harness and connector.
NOTE:Do not cut or splice wiring into the vehicle’s wiring
harness.
The electrical connections are all complete to the
vehicle but you must mate the harness to a trailer
connector. Refer to the following illustrations.
NOTE:
Disconnect the trailer wiring connector from the
vehicle (or any other device plugged into
vehicle’s electrical connectors) before
launching a boat into water.
Be sure to reconnect once clear from water
area.

Four-Pin Connector

WARNING!
Connecting a trailer that is not compatible with
the ITBM system may result in reduced or
complete loss of trailer braking. There may be an
increase in stopping distance or trailer instability
which could result in personal injury.
CAUTION!
Connecting a trailer that is not compatible with
the ITBM system may result in reduced or
complete loss of trailer braking. There may be an
increase in stopping distance or trailer instability
which could result in damage to your vehicle,
trailer, or other property.
1 — Ground
2 — Park
3 — Left Stop/Turn
4 — Right Stop/Turn

23_DPF_OM_EN_USC_t.book Page 190

STARTING AND OPERATING191

Seven-Pin Connector

Trailer Light Check
This feature will run the trailer lights through a
sequence to check the trailer light function. It is
available in the instrument cluster under the
Trailer Tow menu Ú page 95. When activated the feature will enable all of the
exterior lights sequentially for up to five minutes
allowing time to walk around and verify
functionality. The following exterior lights will
remain on for the entirety of the sequence:
Park/Running Lamps
Side Marker Lamps (if equipped)
License Lamp
Signature Lamp (if equipped)
Low Beams
Fog Lamps (if equipped)
Daytime Running Lamps
During this time the following lights will sequence,
each activating for three seconds:

1. Brake and CHMSL (third brake light)

2. Left turn signal
3. Right turn signal
4. Reverse Lamps
5. High Beam
This light check sequence will continue for a total
of five minutes. The sequence will only activate if the following
conditions are met:
Vehicle is equipped with the Trailer Tow
Package
Vehicle is in PARK
Vehicle is not in motion
Ignition in ACC or RUN
Remote start is inactive
Brakes are not applied
Left turn signal is not applied
Right turn signal not applied
Hazard switch is not applied
The sequence will cancel if any of the following
conditions occur:
Brakes are applied
Vehicle is shifted from PARK
Vehicle is no longer stationary
Left turn signal activated from stalk
Right turn signal is activated from stalk
Hazard switch is activated
Any button on the key fob is pushed
Ignition button is pushed
High Beam stalk position is changed
Sequence is canceled in the instrument cluster
1 — Backup Lamps
2 — Running Lamps
3 — Left Stop/Turn
4 — Ground
5 — Battery
6 — Right Stop/Turn
7 — Electric Brakes
4

23_DPF_OM_EN_USC_t.book Page 191

196STARTING AND OPERATING
Shifting Into N (Neutral)
Use the following procedure to prepare your
vehicle for recreational towing.

1. Bring the vehicle to a complete stop on level
ground, with the engine running. Firmly apply
the parking brake.

2. Shift the transmission to NEUTRAL.
3. Press and hold the brake pedal. 4. Shift the transfer case into N (Neutral):With manual shift transfer case, shift the
transfer case lever into N (Neutral).
With electronically shifted transfer case,
push and hold the transfer case N (Neutral)
button. Some models have a small,
recessed "N" button (at the center of the
transfer case switches) that must be
pressed using a ballpoint pen or similar
object. Other models have a rectangular N
(Neutral) switch, below the rotary transfer
case control knob. The N (Neutral) indicator
light will blink while the shift is in progress.
The light will stop blinking (stay on solid)
when the shift to N (Neutral) is complete.
After the shift is completed and the N
(Neutral) light stays on, release the N
(Neutral) button.
5. Release the parking brake.
6. Shift the transmission into REVERSE.
7. Release the brake pedal for five seconds and ensure that there is no vehicle movement.
8. Repeat steps 6 and 7 with automatic transmission in DRIVE.
9. Shift the transmission to NEUTRAL. Firmly apply the parking brake. Turn off the engine.
For vehicles with Keyless Enter ‘n Go™, push
and hold the ENGINE START/STOP button until
the engine shuts off. 10. Shift the transmission into PARK.
11. Place the ignition in the OFF position, and
remove the key fob.
12. Attach the vehicle to the tow vehicle using a suitable tow bar.
13. Release the parking brake.
NOTE:With electronically shifted transfer case:
Steps 2 through 3 are requirements that must
be met before pushing the N (Neutral) button,
and must continue to be met until the shift has
been completed. If any of these requirements
are not met before pushing the N (Neutral)
button or are no longer met during the shift, the
N (Neutral) indicator light will flash continuously
until all requirements are met or until the N
(Neutral) button is released.
The ignition must be in the ON/RUN position for
a shift to take place and for the position indi -
cator lights to be operable. If the ignition is not
in the ON/RUN position, the shift will not take
place and no position indicator lights will be on
or flashing.
A flashing N (Neutral) position indicator light
indicates that shift requirements have not been
met.
WARNING!
You or others could be injured or killed if you
leave the vehicle unattended with the transfer
case in the N (Neutral) position without first fully
engaging the parking brake. The transfer case N
(Neutral) position disengages both the front and
rear driveshafts from the powertrain, and will
allow the vehicle to roll, even if the automatic
transmission is in PARK. The parking brake
should always be applied when the driver is not
in the vehicle.
CAUTION!
It is necessary to follow these steps to be certain
that the transfer case is fully in N (Neutral)
before recreational towing to prevent damage to
internal parts.

23_DPF_OM_EN_USC_t.book Page 196