light RAM CHASSIS CAB 2021 Service Manual

94GETTING TO KNOW YOUR INSTRUMENT PANEL
Fuel Economy
Push and release the up or down arrow
button until the Fuel Economy menu item is
highlighted in the instrument cluster display.
Push and Hold the right arrow button to reset
Average Fuel Economy.
Current Fuel Economy Gauge
Average Fuel Economy Value
Range To Empty
Fuel Tank Levels — If Equipped
Trip A/Trip B
Push and release the up or down arrow
button until the Trip menu item is highlighted
in the instrument cluster display. Push and
release the right arrow button to enter the
submenus of Trip A and Trip B. The Trip A or Trip
B information will display the following:
Distance
Average Fuel Economy
Elapsed Time
Push and hold right arrow button to reset all
information.
Trailer Tow
Push and release the up or down arrow
button until the Trailer Tow menu item is
highlighted in the instrument cluster display.
Push and release the right or left arrow
button to cycle through the following trailer tow
information:
Trip (trailer specific) Distance: Push and hold
the OK button to reset the distance.
Integrated Trailer Brake Module (ITBM):
Braking Output
Trailer Type
ITBM Gain
Trailer Light Check: Push and hold the
OK button to begin the Trailer Light Test
sequence Ú page 209.
Trailer Tire Pressure Monitoring: The Instru-
ment Cluster Display will display the Trailer
Tire Pressure for a connected trailer with
sensors that match the active trailer profile.
When a low tire is present, the low tire value
will be displayed in red, and the affected low tire will have a red glow. “Trailer Tire Low“ will
be displayed on the center bottom of the
Instrument Cluster Display screen.
Audio
Push and release the
up or down arrow
button until the Audio Menu icon/title is
highlighted in the instrument cluster display.
This menu will display the audio source
information, including the Song name, Artist
name, and audio source with an accompanying
graphic.
Phone Call Status
When a call is incoming, a Phone Call Status
pop-up will display on the screen. The pop-up
will remain until the phone is answered or
ignored.
NOTE:
The call status will temporarily replace the
previous media source information displayed
on the screen. When the pop-up is no longer
displayed, the display will return to the last used
screen.

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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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98GETTING TO KNOW YOUR INSTRUMENT PANEL
Settings — If Equipped
Personal Settings allows the driver to set and
recall features when the transmission is in
PARK. Push and release the
up or down arrow
button until Settings displays in the instrument
cluster display.
Follow the prompts to display and set any of the
following Vehicle Settings. NOTE:
Your vehicle may be equipped with the following
settings.
If equipped with a base radio (Non-Touch
-
screen) Vehicle Settings will be included in
the instrument cluster display.
If equipped with a Touchscreen radio, the
Vehicle Settings will be included in the radio
head unit.
Setting Names Setting Names Abbreviated
(Left Submenu Layer) Submenus (Right Submenu Layer)
Language Select
Language English, Spanish, French, Arabic
Units Units U.S.; Metric
ParkSense ParkSense
Front Volume — Low; Medium; High
Rear Volume — Low; Medium; High
Tilt Mirror in Reverse Tilt Mirror in R On; Off
Rain Sensing Wipers Auto Wipers On; Off
Hill Start Assist Hill Start Assist On; Off
Headlights Off Delay Lights Off Delay 0 seconds; 30 seconds; 60 seconds; 90 seconds
Illuminated Approach Lights w/ Unlock 0 seconds; 30 seconds; 60 seconds; 90 seconds
Headlights On with Wipers Lights w/ Wipers On; Off
Automatic High beams Auto High beams On; Off

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GETTING TO KNOW YOUR INSTRUMENT PANEL99
Daytime Running Lights Daytime Lights On; Off
Flash Lights with Lock Lights w/ Lock On; Off
Auto Lock Doors Auto Lock Doors On; Off
Auto Unlock Doors Auto Unlock Doors On; Off
Sound Horn with Remote Start Horn w/ Rmt Start On; Off
Sound Horn with Remote Lock Horn w/ Rmt Lock Off; 1st Press; 2nd Press
Remote Unlock Sequence Remote Unlock Driver Door; All Doors
Key Fob Linked to Memory Key in Memory On; Off
Passive Entry Passive Entry On; Off
Remote Start Comfort System Rmt Start Comfort Off; Remote Start; All starts
Easy Exit Seat Easy Exit Seat On; Off
Key-off Power Delay Power Off Delay Off; 45 seconds; 5 minutes; 10 minutes
Commercial Settings Commercial
Aux Switches
Power Take-Off
PIN Setup
NOTE:
If the vehicle’s PIN is forgotten or not known, see an authorized dealer to have
the PIN reset.
Trailer Select Trailer Select Trailer 1; Trailer 2; Trailer 3; Trailer 4
Setting NamesSetting Names Abbreviated
(Left Submenu Layer) Submenus (Right Submenu Layer)
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100GETTING TO KNOW YOUR INSTRUMENT PANEL
Brake TypeBrake Type Light Electric; Heavy Electric; Light EOH; Heavy EOH
Trailer Name Trailer Name
Trailer # (# is equal to slot position)
Boat
Car
Cargo
Dump
Equipment
Flatbed
Gooseneck
Horse
Livestock
Motorcycle
Snowmobile
Travel
Utility
5th Wheel
Compass Variance Compass Var 1-15 increments of 1
Setting NamesSetting Names Abbreviated
(Left Submenu Layer) Submenus (Right Submenu Layer)

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102GETTING TO KNOW YOUR INSTRUMENT PANEL
Your vehicle has the ability to alert you to
additional maintenance required on your
vehicle or engine. The following messages may
display in your instrument cluster display:

Perform Service — Your vehicle will require
emissions maintenance at a set interval.
To help remind you when this maintenance
is due, the instrument cluster display will
display “Perform Service”. When the “Perform
Service” message is displayed in the instru -
ment cluster display it is necessary to have the
emissions maintenance performed. Emissions
maintenance may include replacing the
Closed Crankcase Ventilation (CCV) filter
element. The procedure for clearing and reset -
ting the "Perform Service" indicator message is
located in the appropriate Service Information.
Exhaust System — Regeneration Required
Now — "Exhaust Filter XX% Full Safely Drive at
Highway Speeds to Remedy" will be displayed
in the instrument cluster display if the exhaust
particulate filter reaches 80% of its maximum
storage capacity. Under conditions of exclu -
sive short duration and low speed driving
cycles, your Cummins diesel engine and
exhaust after-treatment system may never
reach the conditions required to remove the
trapped PM. If this occurs, the “Exhaust Filter
XX% Full Safely Drive at Highway Speeds to
Remedy” message will be displayed in the
instrument cluster display. If this message is
displayed, you will hear one chime to assist in
alerting you of this condition

By simply driving your vehicle at highway
speeds for as little as 45 minutes, you can
remedy the condition in the particulate filter
system and allow your Cummins diesel
engine and exhaust after-treatment system
to remove the trapped PM and restore the
system to normal operating condition.Exhaust System — Regeneration In Process
Exhaust Filter XX% Full — Indicates that the
DPF is self-cleaning. Maintain your current
driving condition until regeneration is
completed.

Exhaust System — Regeneration Completed —
This message indicates that the DPF
self-cleaning is completed. If this message is
displayed, you will hear one chime to assist in
alerting you of this condition.
Exhaust Service Required — See Dealer
Now — This message indicates regeneration
has been disabled due to a system malfunc -
tion. At this point the engine Powertrain
Control Module (PCM) will register a fault code,
the instrument panel will display a MIL light.

WARNING!
A hot exhaust system can start a fire if you
park over materials that can burn. Such
materials might be grass or leaves coming
into contact with your exhaust system. Do not
park or operate your vehicle in areas where
your exhaust system can contact anything
that can burn.
CAUTION!
See an authorized dealer, as damage to
the exhaust system could occur soon with
continued operation.

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GETTING TO KNOW YOUR INSTRUMENT PANEL103
Exhaust Filter Full — Power Reduced See
Dealer — This message indicates the PCM
has derated the engine to limit the likelihood
of permanent damage to the after-treatment
system. If this condition is not corrected and
a dealer service is not performed, extensive
exhaust after-treatment damage can occur.
To correct this condition it will be necessary
to have your vehicle serviced by an autho-
rized dealer.
NOTE:
Failing to follow the oil change indicator,
changing your oil and resetting the oil change
indicator by 0 miles remaining will prevent
the diesel exhaust filter from performing it's
cleaning routine. This will shortly result in a
Malfunction Indicator Light (MIL) and reduced
engine power. Only an authorized dealer will be
able to correct this condition.Cold Ambient Derate Mode Messages
The vehicle will display messages when a
derate (engine power reduction) is activated
to protect the engine during start up in cold
ambient temperatures.
Engine Power Reduced During Warm up —
This message will display during start up
when the ambient temperature is between
10°F (-12°C) and -10°F (-23°C).
Engine Power Reduced Up To 30 Sec
(Seconds) During Warm up — This message
will display during start up when the ambient
temperature is between -10°F (-23°C) and
-25°F (-32°C).
Engine Power Reduced Up To 2 Min
(Minutes) During Warm up — This message
will display during start up when the ambient
temperature is -25°F (-32°C) and below.
Your vehicle is equipped with an engine
warm up protection feature that may limit
engine performance after cold starting at low
ambient temperatures. The length of time
engine speed is limited is dependent upon
engine coolant temperature. Engine speed
may be briefly limited to 1,000 RPM after
starting with coolant temperature below freezing conditions, and may be limited to
1,000 RPM for up to approximately two
minutes under more severe cold conditions.
Coolant Low
— This telltale will turn on to indi -
cate the vehicle coolant level is low. Refer to
“Dealer Service” in “Servicing And Mainte -
nance” for more information.
Diesel Exhaust Fluid (DEF) Warning
Messages
There are four different messages which are
displayed if the vehicle detects that the DEF
system has been filled with a fluid other than
DEF, has experienced component failures, or
when tampering has been detected. The vehicle
may be limited to a maximum speed of 5 mph
(8 km/h) if the DEF system is not serviced
within less than 200 miles (322 km) of the fault
being detected.
When the DEF system needs to be serviced the
following warnings will display:

DEF Low Refill Soon — This message will
display when the low level is reached, during
vehicle start up, and with increased frequency
during vehicle operation. It will be accompa -
nied by a single chime. Approximately
5 gallons (19 Liters) of DEF is required to

CAUTION!
See an authorized dealer, as damage to
the exhaust system could occur soon with
continued operation.
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106GETTING TO KNOW YOUR INSTRUMENT PANEL
NOTE:
The charging system is independent from
load reduction. The charging system
performs a diagnostic on the charging
system continuously.
If the Battery Charge Warning Light is on it
may indicate a problem with the charging
system Úpage 108.
The electrical loads that may be switched off
(if equipped), and vehicle functions which can
be affected by load reduction:
Heated Seats/Vented Seats/Heated Wheel
Rear Defroster And Heated Mirrors
HVAC System
115 Volt AC Power Inverter System
Audio and Telematics System
Loss of the battery charge may indicate one or
more of the following conditions:

The charging system cannot deliver enough
electrical power to the vehicle system because
the electrical loads are larger than the capa -
bility of charging system. The charging system
is still functioning properly.

Turning on all possible vehicle electrical
loads (e.g. HVAC to max settings, exterior
and interior lights, overloaded power outlets
+12 Volts, 115 Volt AC, USB ports) during
certain driving conditions (city driving,
towing, frequent stopping).
Installing options like additional lights,
upfitter electrical accessories, audio
systems, alarms and similar devices.
Unusual driving cycles (short trips separated
by long parking periods).
The vehicle was parked for an extended
period of time (weeks, months).
The battery was recently replaced and was
not charged completely.
The battery was discharged by an electrical
load left on when the vehicle was parked.
The battery was used for an extended period
with the engine not running to supply radio,
lights, chargers, +12 Volt portable appli -
ances like vacuum cleaners, game consoles
and similar devices. What to do when an electrical load reduction
action message is present (“Battery Saver On”
or “Battery Saver Mode”)
During a trip:
Reduce power to unnecessary loads if
possible:

Turn off redundant lights (interior or exterior).

Check what may be plugged in to power
outlets +12 Volts, 115 Volt AC, USB ports.

Check HVAC settings (blower, temperature).

Check the audio settings (volume).
After a trip:
Check if any aftermarket equipment was
installed (additional lights, upfitter electrical
accessories, audio systems, alarms) and
review specifications if any (load and Ignition
Off Draw currents).
Evaluate the latest driving cycles (distance,
driving time and parking time).

The vehicle should have service performed if the
message is still present during consecutive trips
and the evaluation of the vehicle and driving
pattern did not help to identify the cause.

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GETTING TO KNOW YOUR INSTRUMENT PANEL107
WARNING LIGHTS AND MESSAGES

The warning/indicator lights will illuminate in the
instrument panel together with a dedicated
message and/or acoustic signal when
applicable. These indications are indicative
and precautionary and as such must not be
considered as exhaustive. Always refer to the
information in this chapter in the event of a
failure indication. All active telltales will display
first if applicable. The system check menu may
appear different based upon equipment options
and current vehicle status. Some telltales are
optional and may not appear.

RED WARNING LIGHTS
Seat Belt Reminder Warning Light

This warning light indicates when
the driver or passenger seat belt is
unbuckled. When the ignition is first
placed in the ON/RUN or ACC/ON/RUN
position and if the driver’s seat belt is unbuckled,
a chime will sound and the light will turn on.
When driving, if the driver or front passenger seat
belt remains unbuckled, the Seat Belt Reminder
Light will flash or remain on continuously and a
chime will sound
Ú
page 292.

Air Bag Warning Light
This warning light will illuminate to
indicate a fault with the air bag, and
will turn on for four to eight seconds
as a bulb check when the ignition
is placed in the ON/RUN or ACC/ON/RUN
position. This light will illuminate with a single
chime when a fault with the air bag has been
detected, it will stay on until the fault is cleared.
If the light is not on during startup, stays on,
or turns on while driving, have the system
inspected at an authorized dealer as soon as
possible.
Brake Warning Light
This warning light monitors various
brake functions, including brake fluid
level and parking brake application.
If the brake light turns on it may
indicate that the parking brake is applied, that
the brake fluid level is low, or that there is a
problem with the Anti-Lock Brake System
reservoir.
If the light remains on when the parking brake
has been disengaged, and the fluid level is at
the full mark on the master cylinder reservoir,
it indicates a possible brake hydraulic system
malfunction or that a problem with the Brake Booster has been detected by the Anti-Lock
Brake System (ABS) / Electronic Stability
Control (ESC) system. In this case, the light
will remain on until the condition has been
corrected. If the problem is related to the brake
booster, the ABS pump will run when applying
the brake, and a brake pedal pulsation may be
felt during each stop.
The dual brake system provides a reserve
braking capacity in the event of a failure to a
portion of the hydraulic system. A leak in either
half of the dual brake system is indicated by the
Brake Warning Light, which will turn on when
the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is
corrected.
NOTE:
The light may flash momentarily during sharp
cornering maneuvers, which change fluid level
conditions. The vehicle should have service
performed, and the brake fluid level checked.
If brake failure is indicated, immediate repair is
necessary.
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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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