2020 Ram 3500 engine

GETTING TO KNOW YOUR INSTRUMENT PANEL115
Up Arrow Button
Push and release the up arrow
button to scroll upward through the
main menu items, submenu
screen, and vehicle settings.
Down Arrow Button
Push and release the down arrow
button to scroll downward through
the main menu items, submenu
screen, and vehicle settings.
Right Arrow Button
Push and release the right arrow
button to access/select the infor -
mation screens or submenu
screens of a main menu item. Push
and hold the right arrow button for two
seconds to reset displayed/selected features
that can be reset.
Left Arrow Button
Push and release the left arrow
button to access/select the infor -
mation screens, submenu screens
of a main menu item, or to return to
the main menu.
OIL LIFE RESET
Your vehicle is equipped with an engine oil
change indicator system. The “Oil Change
Required” message will display in the
instrument cluster display after a single chime
has sounded, to indicate the next scheduled oil
change interval. The engine oil change indicator
system is duty cycle based, which means the
engine oil change interval may fluctuate,
dependent upon your personal driving style.
NOTE:
Use the steering wheel instrument cluster
display controls for the following procedure.
Oil Life Reset Procedure

1. Without pushing the brake pedal, push the ENGINE START/STOP button and place the
ignition to the ON/RUN position (do not
start the engine).

2. Push and release the down arrow button to
scroll downward through the main menu to
“Vehicle Info.”
3. Push and release the right arrow button to
access the ”Vehicle Info” screen, then scroll
up or down to select “Oil Life.” 4. Push and hold the
right arrow button to
select “Reset”.
5. Push and release the down arrow button to
select “Yes,” then push and release the
right arrow button to reset the Oil Life to
100%.
6. Push and release the up arrow button to exit
the instrument cluster display screen.
Secondary Method Of Resetting Engine Oil Life

1. Without pressing the brake pedal, push the ENGINE START/STOP button and place the
ignition to the ON/RUN position (do not
start the engine).

2. Fully press the accelerator pedal, slowly, three times within ten seconds.
3. Without pushing the brake pedal, push the ENGINE START/STOP button once to return
the ignition to the OFF/LOCK position.
NOTE:
If the indicator message illuminates when you
start the vehicle, the oil change indicator
system did not reset. If necessary, repeat this
procedure.
3

20_DJD2_OM_EN_USC_t.book Page 115

116GETTING TO KNOW YOUR INSTRUMENT PANEL
DISPLAY MENU ITEMS
Push and release the up or down arrow button
until the desired selectable menu icon is
highlighted in the instrument cluster display.
Refer to “Instrument Cluster Display” in this
chapter for further information.
Speedometer
Push and release the up or down arrow button
until the speedometer menu item is highlighted
in the instrument cluster display. Push and
release the right arrow button to cycle the
display between mph and km/h.
Vehicle Info
Push and release the up or down arrow button
until the Vehicle Info menu item is highlighted in
the instrument cluster display. Push and
release the right arrow button to enter the
submenus items of Vehicle Info. Follow the
directional prompts to access or reset any of the
following Vehicle Info submenu items:
Tire Pressure
Coolant Temperature
Transmission Temperature — If Equipped
Oil Temperature
Oil Pressure
Exhaust Brake — If Equipped
Turbo Boost — If Equipped
Oil Life
Fuel Filter Life — If Equipped
Battery Voltage
Gauge Summary
Engine Hours
Driver Assist — If Equipped
The Driver Assist menu displays the status of
the Adaptive Cruise Control (ACC) and
LaneSense systems.
Push and release the up or down arrow button
until the Driver Assist menu is displayed in the
instrument cluster display.
Adaptive Cruise Control (ACC) Feature
The instrument cluster display displays the
current ACC system settings. The information
displayed depends on ACC system status. Push the Adaptive Cruise Control (ACC) on/off
button (located on the steering wheel) until one
of the following displays in the instrument
cluster display:
Adaptive Cruise Control Off
When ACC is deactivated, the display will read
“Adaptive Cruise Control Off.”
Adaptive Cruise Control Ready
When ACC is activated but the vehicle speed
setting has not been selected, the display will
read “Adaptive Cruise Control Ready.”
Push the SET + or the SET- button (located on
the steering wheel) and the following will display
in the instrument cluster display:
ACC SET
When ACC is set, the set speed will display in
the instrument cluster.
The ACC screen may display once again if any
ACC activity occurs, which may include any of
the following:
Distance Setting Change
System Cancel
Driver Override

20_DJD2_OM_EN_USC_t.book Page 116

GETTING TO KNOW YOUR INSTRUMENT PANEL125
Commercial Settings — If Equipped
Commercial Settings allows the driver to set
and recall additional features when the
transmission is in PARK (P).
Push and release the up and down button until
Commercial Settings displays in the instrument
cluster display.
Follow the prompts to enter the required PIN
and enter the Commercial Settings submenu.
Commercial Settings allows you to access the
following features (if equipped):
Backup Alarm — If Equipped
ParkSense — If Equipped
Aux Switches
PIN Setup
NOTE:
If the vehicle’s PIN is forgotten or not known,
see an authorized dealer to have the PIN reset.
DIESEL MESSAGES AND WARNINGS —
6.7L C
UMMINS DIESEL ENGINE
Diesel Particulate Filter (DPF) Messages
The Cummins diesel engine meets all diesel
emissions standards, resulting in one of the
lowest emitting diesel engines ever produced.
To achieve these emissions standards, your
vehicle is equipped with a state-of-the-art
engine and exhaust system. These systems are
seamlessly integrated into your vehicle and
managed by the Powertrain Control Module
(PCM). The PCM manages engine combustion
to allow the exhaust system’s catalyst to trap
and burn Particulate Matter (PM) pollutants,
with no input or interaction on your part. 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 instrument cluster display it is necessary
to have the emissions maintenance
performed. Emissions maintenance may
include replacing the Closed Crankcase
Ventilation (CCV) filter element. The proce -
dure for clearing and resetting 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 exclusive short duration and low speed
driving cycles, your Cummins diesel engine
and exhaust after-treatment system may
never reach the conditions required to
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.
3

20_DJD2_OM_EN_USC_t.book Page 125

126GETTING TO KNOW YOUR INSTRUMENT PANEL
remove the trapped Particulate Matter (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 Particulate Matter
(PM) and restore the system to normal oper-
ating condition.
Exhaust System — Regeneration In Process
Exhaust Filter XX% Full — Indicates that the
Diesel Particulate Filter (DPF) is self-cleaning.
Maintain your current driving condition until
regeneration is completed.
Exhaust System — Regeneration Completed
— This message indicates that the Diesel
Particulate Filter (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 malfunction.
At this point the engine Powertrain Control
Module (PCM) will register a fault code, the
instrument panel will display a MIL light.
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 your local
authorized 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 Warmup
—
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 Warmup — This message
will display during start up when the ambient
temperature is between -10°F (-23°C) and
-25°F (-32°C).
CAUTION!
See an authorized dealer, as damage to the
exhaust system could occur soon with
continued operation.
CAUTION!
See an authorized dealer, as damage to the
exhaust system could occur soon with
continued operation.

20_DJD2_OM_EN_USC_t.book Page 126

GETTING TO KNOW YOUR INSTRUMENT PANEL127
Engine Power Reduced Up To 2 Min
(Minutes) During Warmup — 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 1000 RPM after
starting with coolant temperature below
freezing conditions, and may be limited to
1000 RPM for up to approximately 2 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
accompanied by a single chime. Approxi -
mately 5 gallons (19 Liters) of DEF is required
to refill the tank when this message is initially
displayed. on pickup applications, and
approximately 7 gallons (26 Liters) are
required on chassis-cab applications.
Speed Limited to 5 MPH in XXX mi Refill DEF
— This message will continuously display if
the “DEF Low Refill Soon” message is
ignored, and the frequency of occurrence of
the chime will increase unless up to 2 gallons
(7.5 Liters) of DEF is added to the tank.
5 MPH Max Speed on Restart, Long Idle or
Refuel Refill DEF — This message will contin -
uously display when the counter reaches
zero, and will be accompanied by a periodic
chime. The vehicle will only be capable of a
maximum speed of 5 MPH upon the first of
the following conditions to occur:
If the vehicle is shutoff and restarted.
If the vehicle is idled for an extended
period of time, approximately one hour or
greater.
If the system detects that the level of fuel
in the tank has increased.
Add a minimum of 2 gallons (7.5 Liters) of
DEF to the tank in order to avoid vehicle oper -
ation at a maximum speed of 5 MPH
(8 km/H).
NOTE:
A minimum of 2 gallons (7.5 Liters) may be
required to restore normal vehicle operation.
Although the vehicle will start normally and can
be placed in gear after this message has been
initially displayed, extreme caution should be
utilized since the vehicle will only be capable of
maneuvering at a maximum speed of 5 MPH
(8 km/H).
3

20_DJD2_OM_EN_USC_t.book Page 127

128GETTING TO KNOW YOUR INSTRUMENT PANEL
Diesel Exhaust Fluid (DEF) Fault Warning
Messages
There are five 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:
Service DEF System See Dealer — This
message will display when the fault is initially
detected, each time the vehicle is started,
and periodically during driving. The message
will be accompanied by a single chime. We
recommend you drive to your nearest autho -
rized dealer and have your vehicle serviced
as soon as possible.

5 MPH Max Speed in 150 mi Service DEF
System See Dealer — This message will display
if the DEF system has not been serviced after
the “Service DEF System – See Dealer”
message is displayed. This message will
continuously display until the mileage counter reaches zero, and will be accompanied by a
periodic chime. The message will continue to
countdown until it reaches zero unless the
vehicle is serviced. We recommend you drive
to your nearest authorized dealer and have
your vehicle serviced immediately.

NOTE:
Under some circumstances this mileage
counter may start with a value of less than
150 miles (241 km). For example, if recurring faults are detected in a time interval of less
than 40 hours, the counter may restart at the
value where it stopped when a previous fault
was temporarily remedied, or at a minimum of
50 miles (80 km).
5 MPH Max Speed on Restart, Long Idle or
Refuel Service DEF See Dealer — This
message will continuously display when the
mileage counter reaches zero, and will be
accompanied by a periodic chime.
The vehicle will only be capable of a
maximum speed of 5 MPH upon the first of
the following conditions to occur:
If the vehicle is shutoff and restarted.

If the vehicle is idled for an extended period
of time, approximately one hour or greater.

If the system detects that the level of fuel
in the tank has increased.
5 MPH Max Speed Service DEF System See
Dealer — This message will continuously
display, and will be accompanied by a peri -
odic chime. Although the vehicle can be
started and placed in gear, the vehicle will
only operate at a maximum speed of 5 MPH.
Your vehicle will require towing, see an
authorized dealer for service.
NOTE:
When this message is displayed, the engine can
still be started. However, the vehicle will only
operate at a maximum speed of 5 MPH.
Incorrect DEF Detected See Dealer — This
message will display when the fault is initially
detected, each time the vehicle is started,
and periodically during driving. The message
will be accompanied by a single chime. We
recommend you drive to your nearest autho -
rized dealer and have your vehicle serviced
as soon as possible.
RAM Active Air System
Your vehicle is equipped with an advanced Ram
Active Air system that provides enhanced
performance, especially when towing under

20_DJD2_OM_EN_USC_t.book Page 128

GETTING TO KNOW YOUR INSTRUMENT PANEL129
demanding hot or high altitude conditions. If the
instrument cluster display displays the
message “Active Airbox Service Required See
Dealer”, vehicle performance may be reduced
until service is performed by an authorized RAM
dealer.
BATTERY SAVER ON/BATTERY SAVER
M
ODE MESSAGE — ELECTRICAL LOAD
R
EDUCTION ACTIONS — IF EQUIPPED
This vehicle is equipped with an Intelligent
Battery Sensor (IBS) to perform additional
monitoring of the electrical system and status
of the vehicle battery.
In cases when the IBS detects charging system
failure, or the vehicle battery conditions are
deteriorating, electrical load reduction actions
will take place to extend the driving time and
distance of the vehicle. This is done by reducing
power to or turning off non-essential electrical
loads.
Load reduction is only active when the engine is
running. It will display a message if there is a
risk of battery depletion to the point where the
vehicle may stall due to lack of electrical supply,
or will not restart after the current drive cycle. When load reduction is activated, the message
“Battery Saver On Some Systems May Have
Reduced Power” will appear in the instrument
cluster.
These messages indicate the vehicle battery
has a low state of charge and continues to lose
electrical charge at a rate that the charging
system cannot sustain.
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. Refer to “Warning Lights And
Messages” in “Getting To Know Your Instru
-
ment Panel” for further information.
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 Volts 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 capability 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 Volts 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).
3

20_DJD2_OM_EN_USC_t.book Page 129

130GETTING TO KNOW YOUR INSTRUMENT PANEL
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 Volts 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 Volts AC, USB
ports.
Check HVAC settings (blower, tempera -
ture).
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 consecu
-
tive trips and the evaluation of the vehicle
and driving pattern did not help to identify the
cause.
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.
Refer to “Occupant Restraint Systems” in
“Safety” for further information.
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 either not on during startup, stays

20_DJD2_OM_EN_USC_t.book Page 130