2023 RAM 1500 ECU

GETTING TO KNOW YOUR VEHICLE89
6. Unsnap the stowage strap and clip. Repeat for both
straps to prevent the Tonneau Cover panels from
unfolding.

Position One
(Front Latches Latched And Stowage Straps Secured)

NOTE:
Be sure the Tonneau Cover has been folded completely,
and the stowage straps are engaged, before removing.

Fully Folded Tonneau Cover

NOTE:
The vehicle can be driven with the Tonneau Cover in the
folded position or can be completely removed.

Slide Locking Lever Inward

7. Slide the locking lever toward the inside of the truck bed to release the J Hook and pull the handle
downward into the released position.

Unlatching Latch
Released Position

CAUTION!
The folded Tonneau Cover must be latched by both
front latches and both front stowage straps or damage
to the Tonneau Cover or vehicle may occur while driving.
2

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92GETTING TO KNOW YOUR VEHICLE

Position Two (Fully Unfolded)

8. Repeat steps 2 through 3 for the rear pair of latches.
9. Pull down on the handle to ensure the Slide Locking
Lever is fully engaged. Do this for both the left and
right side.
NOTE:Also check to ensure the latch yellow bumpers are forward
of the bead on the underside of the truck flange. Make
sure that the Tonneau Cover is positioned fully forward, so
that the bumper clears the bead.

Pull Up On Tonneau Cover Corners

10. Gently pull up on all four corners of the Tonneau Cover to ensure that it is properly latched.
TRI-FOLD TONNEAU COVER CLEANING
For proper cleaning of the Tonneau Cover, use Mopar®
Whitewall & Vinyl Top Cleaner and Mopar® Leather & Vinyl
Conditioner/Protectant.
WARNING!
You must ensure the Tonneau Cover is properly
installed on the vehicle before driving. An unsecured
Tonneau Cover can fly off of the vehicle while in motion,
resulting in a collision, personal injury, and death.
Failure to follow this procedure can also damage the
vehicle and the Tonneau Cover.
CAUTION!
It is the driver’s responsibility to ensure the Tonneau
Cover is properly installed on the vehicle. Failure to
follow this procedure can result in detachment of the
Tonneau Cover from the vehicle and/or damage to the
vehicle/Tonneau Cover.

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104GETTING TO KNOW YOUR INSTRUMENT PANEL
Settings
Head Up Display (HUD) – If Equipped
NOTE:The HUD feature Settings are available at any vehicle
speed Úpage 105.
Screen Setup Driver Selectable Items
Push and release the left or right arrow button
until the Settings Menu Icon/Title is highlighted in the
instrument cluster display. Push and release the OK
button to enter the submenus and follow the prompts on
the screen as needed. The Settings feature allows you to
change what information is displayed in the instrument
cluster as well as the location that information is
displayed.
NOTE:Depending on the vehicles trim level and current status,
some options may not be available. The Settings feature is
only available when the vehicle speed is less than 5 mph.
MIDLINE AND HIGHLINE CLUSTER
Current Gear
 Off
 On
Odometer
 No Decimal Point
 Decimal Point
Defaults (Restores All Settings To Default Settings)
 Cancel
 Restore
Upper Left or Right
None TimeCurrent Econ
Compass Range Trip A Distance
Outside Temp Average Econ Trip B Distance
Trailer Trip –
If Equipped Oil Pressure –
If EquippedOil Temperature
– If Equipped
Trailer Brake –
If EquippedCoolant Temp –
If EquippedBattery Voltage –
If Equipped
Transmission
Temperature –
If Equipped Oil Life –
If Equipped
Favorite Menus
Speedometer Vehicle Info Performance
Off Road Driver Assist
(show/hide) –
If EquippedFuel Economy
(show/hide)
Trip Info
(show/hide) Trailer Tow –
If Equipped
(show/hide)Audio
(show/hide)
Messages
(Stored) Settings Diagnostics
Left Side and Right Side – If Equipped
None Range To Empty Average Econ
Oil Temp Transmission
TempCoolant Temp
Oil Life Menu Icon
Upper Left or Right
Lower Left and Lower Right – If Equipped
None TimeCurrent Econ
Compass Range To Empty Trip A Distance
Outside Temp Average Econ Trip B Distance
Trailer Trip –
If Equipped Trailer Brake –
If Equipped
Oil Pressure
Coolant
Temperature Oil Temperature Battery Voltage
Transmission
Temperature Oil Life

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GETTING TO KNOW YOUR INSTRUMENT PANEL105
PREMIUM CLUSTER
Display Style
Modern
 Traditional
Current Gear
 Off
 On
Odometer
 No Decimal Point
 Decimal Point
 Hide Fuel Gauge

Hide Range
 Show Range
Defaults (Restores All Settings To Default Settings)
 Restore
 Cancel
HEAD UP DISPLAY (HUD) —
I
F EQUIPPED
Use this QR code to access your digital
experience.
NOTE:The HUD feature Settings are available
at any vehicle speed. Some infor -
mation like speed limit or Driver Assist
may not appear on the HUD unless
your vehicle is equipped Traffic Sign
Assist or Driver Assist systems. Push and release the
up or down arrow button until
the Settings Menu icon/title is highlighted in the
instrument cluster display. Push and release the left or
right arrow button until the HUD Menu icon/title is
highlighted in the instrument cluster display. Push and
release the OK button to enter HUD. Use the up or
down arrow button to select a setting, then push and
release the OK button to adjust the setting.
 Content and Layout
When “Display On” is selected, the HUD will display on
the windshield. When it is not selected, no display on
the windshield.

HUD ON/OFF

Upper Left or Right
None TimeCurrent Econ
Compass Range Trip A Distance
Outside Temp Average Econ Trip B Distance
Trailer Trip –
If Equipped
Upper Center
None BadgeCompass
Outside Temp Time Range To Empty
Average Econ Current Econ Trip A Distance
Trip B Distance Trailer Trip Audio
(show/hide)
Favorite Menus
Performance Trip Info
(show/hide)Navigation
Off Road Trailer Tow –
If Equipped
(show/hide)Audio
(show/hide)
3

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GETTING TO KNOW YOUR INSTRUMENT PANEL107
NOTE:
The charging system is independent from load reduc -
tion. 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 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).
 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 appliances 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, 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.
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 and/or alternative to the
information contained in the Owner’s Manual, which you
are advised to read carefully in all cases. 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.
3

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110GETTING TO KNOW YOUR INSTRUMENT PANEL
Oil Temperature Warning Light
This warning light will illuminate to indicate the
engine oil temperature is high. If the light turns
on while driving, stop the vehicle and shut off
the engine as soon as possible. Wait for oil
temperature to return to normal levels.
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
Úpage 282.
Tailgate Open Warning Light
This warning light will illuminate when the
tailgate is open.
NOTE:If the vehicle is moving, there will also be a single chime.
Trailer Brake Disconnected Warning Light
This warning light will illuminate when the
Trailer Brake has been disconnected.
Transmission Temperature Warning
Light — If Equipped
This warning light will illuminate to warn of a
high transmission fluid temperature. This may
occur with strenuous usage such as trailer
towing. If this light turns on, stop the vehicle
and run the engine at idle or slightly faster, with the
transmission in PARK or NEUTRAL, until the light turns off.
Once the light turns off, you may continue to drive
normally.
Vehicle Security Warning Light —
If Equipped
This light will flash at a fast rate for
approximately 15 seconds when the vehicle
security system is arming, and then will flash
slowly until the vehicle is disarmed.
YELLOW WARNING LIGHTS
Adaptive Cruise Control (ACC) Fault
Warning Light — If Equipped
This warning light will illuminate to indicate a
fault in the ACC system. Contact an authorized
dealer for service
Úpage 145.
Air Suspension Fault Warning Light —
If Equipped
This light will illuminate when a fault is
detected with the air suspension system.
Anti-Lock Brake System (ABS)
Warning Light
This warning light monitors the ABS. The light
will turn on when the ignition is placed in the
ON/RUN or ACC/ON/RUN position and may
stay on for as long as four seconds.
If the ABS light remains on or turns on while driving, then
the Anti-Lock portion of the brake system is not
functioning and service is required as soon as possible.
However, the conventional brake system will continue to
operate normally, assuming the Brake Warning Light is not
also on.
If the ABS light does not turn on when the ignition is placed
in the ON/RUN or ACC/ON/RUN position, have the brake
system inspected by an authorized dealer.
WARNING!
If you continue operating the vehicle when the
Transmission Temperature Warning Light is illuminated
you could cause the fluid to boil over, come in contact
with hot engine or exhaust components and cause a
fire.
CAUTION!
Continuous driving with the Transmission Temperature
Warning Light illuminated will eventually cause severe
transmission damage or transmission failure.

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116GETTING TO KNOW YOUR INSTRUMENT PANEL
LaneSense Indicator Light — If Equipped
When the LaneSense system is ON, but not
armed, the LaneSense indicator light
illuminates solid white. This occurs when only
left, right, or neither lane line has been
detected. If a single lane line is detected, the system is
ready to provide only visual warnings if an unintentional
lane departure occurs on the detected lane line
Úpage 161.
Cruise Control SET Indicator Light —
If Equipped With Base/Midline Instrument
Cluster Display
This light will turn on when the cruise control is
set Úpage 143.
BLUE INDICATOR LIGHTS
High Beam Indicator Light
This indicator light will illuminate to indicate
that the high beam headlights are on. With the
low beams activated, push the multifunction
lever forward (toward the front of the vehicle) to
turn on the high beams. Pull the multifunction lever
rearward (toward the rear of the vehicle) to turn off the
high beams. If the high beams are off, pull the lever toward
you for a temporary high beam on, “flash to pass”
scenario.
ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated Onboard
Diagnostic system called OBD II. This system monitors the
performance of the emissions, engine, and transmission
control systems. When these systems are operating
properly, your vehicle will provide excellent performance
and fuel economy, as well as engine emissions well within
current government regulations.
If any of these systems require service, the OBD II system
will turn on the Malfunction Indicator Light (MIL). It will
also store diagnostic codes and other information to
assist your service technician in making repairs. Although
your vehicle will usually be drivable and not need towing,
see an authorized dealer for service as soon as possible.
ONBOARD DIAGNOSTIC SYSTEM
(OBD II) C
YBERSECURITY
Your vehicle is required to have OBD II and a connection
port to allow access to information related to the
performance of your emissions controls. Authorized
service technicians may need to access this information to
assist with the diagnosis and service of your vehicle and
emissions system
Úpage 191.
CAUTION!
 Prolonged driving with the MIL on could cause further
damage to the emission control system. It could also
affect fuel economy and driveability. The vehicle
must be serviced before any emissions tests can be
performed.
 If the MIL is flashing while the vehicle is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
WARNING!
ONLY an authorized service technician should
connect equipment to the OBD II connection port in
order to read the VIN, diagnose, or service your
vehicle.
 If unauthorized equipment is connected to the OBD II
connection port, such as a driver-behavior tracking
device, it may:
 Be possible that vehicle systems, including
safety related systems, could be impaired or a
loss of vehicle control could occur that may
result in an accident involving serious injury or
death.
 Access, or allow others to access, information
stored in your vehicle systems, including
personal information.

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124STARTING AND OPERATING
(Continued)
SafeHold
SafeHold is a safety feature of the Electric Park Brake
(EPB) system that will engage the parking brake
automatically if the vehicle is left unsecured while the
ignition is in ON/RUN.
The parking brake will automatically engage if all of the
following conditions are met:
The vehicle is at a standstill.
 There is no attempt to press the brake pedal and accel -
erator pedal.
 The seat belt is unbuckled.
 The driver door is open.
SafeHold can be temporarily bypassed by pushing the EPB
switch while the driver door is open. Once manually
bypassed, SafeHold will be enabled again once the vehicle
reaches 12 mph (20 km/h) or the ignition is turned to the
OFF position and back to ON again.
Brake Service Mode
We recommend having your brakes serviced by an
authorized dealer. You should only make repairs for which
you have the knowledge and the right equipment.
You should only enter Brake Service mode during
brake service. When servicing your rear brakes, it may be necessary for
you or your technician to push the rear piston into the rear
caliper bore. With the Electric Park Brake (EPB) system,
this can only be done after retracting the EPB actuator.
Fortunately, actuator retraction can be done easily by
entering the Brake Service mode through the Uconnect
Settings in your vehicle. This menu-based system will
guide you through the steps necessary to retract the EPB
actuator in order to perform rear brake service.
Service Mode has requirements that must be met in order
to be activated:

The vehicle must be at a standstill.
 The parking brake must be unapplied.
 The transmission must be in PARK or NEUTRAL.
While in Service Mode, the EPB Warning Light will flash
continuously while the ignition is in ON/RUN.
When brake service work is complete, the following steps
must be followed to reset the park brake system to normal
operation:
 Ensure the vehicle is at a standstill.
 Press the brake pedal with moderate force.
 Apply the EPB Switch.
AUTOMATIC TRANSMISSION
You must press and hold the brake pedal while shifting out
of PARK.
WARNING!
You can be badly injured working on or around a motor
vehicle. Do only that service work for which you have
the knowledge and the right equipment. If you have any
doubt about your ability to perform a service job, take
your vehicle to a competent mechanic.
WARNING!
Never use the PARK position as a substitute for the
parking brake. Always apply the parking brake fully
when exiting the vehicle to guard against vehicle
movement and possible injury or damage.
 Your vehicle could move and injure you and others if
it is not in PARK. Check by trying to move the trans -
mission gear selector out of PARK with the brake
pedal released. Make sure the transmission is in
PARK before exiting the vehicle.
 The transmission may not engage PARK if the vehicle
is moving. Always bring the vehicle to a complete
stop before shifting to PARK, and verify that the
transmission gear position indicator solidly indicates
PARK (P) without blinking. Ensure that the vehicle is
completely stopped, and the PARK position is prop -
erly indicated, before exiting the vehicle.
 It is dangerous to shift out of PARK or NEUTRAL if the
engine speed is higher than idle speed. If your foot is
not firmly pressing the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You could
lose control of the vehicle and hit someone or
something. Only shift into gear when the engine is
idling normally and your foot is firmly pressing the
brake pedal.

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