2023 RAM 1500 light

SAFETY279
Service TPMS Warning
If a system fault is detected, the Tire Pressure Monitoring
System (TPMS) Warning Light will flash on and off for 75
seconds and then remain on solid. The system fault will
also sound a chime. In addition, the instrument cluster will
display a "SERVICE TPM SYSTEM" message for a minimum
of five seconds and then display dashes (--) in place of the
pressure value to indicate which sensor is not being
received.
If the ignition switch is cycled, this sequence will repeat,
providing the system fault still exists. If the system fault no
longer exists, the Tire Pressure Monitoring System
Warning Light will no longer flash, and the "SERVICE TPM
SYSTEM" message will no longer display, and a pressure
value will display in place of the dashes. A system fault can
occur due to any of the following:
Signal interference due to electronic devices or driving
next to facilities emitting the same radio frequencies
as the Tire Pressure Monitoring System sensors
 Installing aftermarket window tinting that contains
materials that may block radio wave signals
 Accumulation of snow or ice around the wheels or
wheel housings
 Using tire chains on the vehicle
 Using wheels/tires not equipped with TPMS sensors
A system fault may occur due to an incorrect TPMS sensor
location condition. When a system fault occurs due to an
incorrect TPMS sensor location, the Tire Pressure
Monitoring System (TPMS) Warning Light will flash on and
off for 75 seconds and then remain on solid. The system fault will also sound a chime. In addition, the
instrument cluster will display a Tire Pressure Temporarily
Unavailable message in place of the tire pressure display
screen. If the ignition switch is cycled, this sequence will
repeat, providing the system fault still exists. If the system
fault no longer exists, the “Tire Pressure Monitoring
System Warning Light” will no longer flash and the tire
pressure display screen will be displayed showing the tire
pressure values the correct locations.
Vehicles With Non-Matching Full Size Spare Or Compact
Spare

The non-matching full size spare or compact spare tire
does not have a TPMS sensor. Therefore, the TPMS will
not monitor the pressure in the non-matching full size
spare or compact spare tire.
 If you install the non-matching full size spare or
compact spare tire in place of a road tire that has a
pressure below the low-pressure warning limit, upon
the next ignition switch cycle, the Tire Pressure
Monitoring System (TPMS) Warning Light and a
“LOW TIRE” message will remain on and a chime will
sound. In addition, the graphic in the instrument
cluster will still display a pressure value in a different
color and an “Inflate to XX” message.
 After driving the vehicle for up to 20 minutes above
15 mph (24 km/h), the Tire Pressure Monitoring
System (TPMS) Warning Light will flash on and off for
75 seconds and then remain on solid. In addition, the
instrument cluster will display a "SERVICE TPM
SYSTEM" message for a minimum of five seconds and
then display dashes (--) in place of the pressure value. 
For each subsequent ignition switch cycle, a chime will
sound, the Tire Pressure Monitoring System (TPMS)
Warning Light will flash on and off for 75 seconds and
then remain on solid, and the instrument cluster will
display a "SERVICE TPM SYSTEM" message for a
minimum of five seconds and then display dashes (--)
in place of the pressure value.
 Once you repair or replace the original road tire and
reinstall it on the vehicle in place of the non-matching
full size spare or compact spare, the TPMS will update
automatically. In addition, the Tire Pressure Monitoring
System (TPMS) Warning Light will turn off and the
graphic in the instrument cluster will display a new
pressure value instead of dashes (--), as long as no tire
pressure is below the low-pressure warning limit in any
of the four active road tires. The vehicle may need to be
driven for up to 20 minutes above 15 mph (24 km/h)
in order for the TPMS to receive this information.
Tire Fill Alert
This feature notifies the user when the placard tire
pressure is attained while inflating or deflating the tire.
You may choose to disable or enable the Tire Fill Alert
feature through use of the Uconnect Settings in the radio.
NOTE:
Only one tire can be filled at a time when using the Tire
Fill Alert system.
 The Tire Fill Alert feature cannot be entered if an
existing TPMS fault is set to “active” or if the system is
in deactivation mode (if equipped).
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280SAFETY
The system will be activated when a positive increase in
tire pressure is detected by the TPMS while inflating the
tire. The ignition must be in the RUN mode, with the
transmission in PARK.
NOTE:It is not required to have the engine running to enter Tire
Fill Alert mode.
The hazard lamps will come on to confirm the vehicle is in
Tire Fill Alert mode.
When Tire Fill Alert mode is entered, the tire pressure
display screen will be displayed in the instrument cluster.
If the hazard lamps do not come on while inflating the tire,
the TPMS sensor may be out of range preventing the TPMS
sensor signal from being received. In this case, the vehicle
may need to be moved either forward or backward slightly
to exit the null spot.
Operation:
The horn will sound once to let the user know when to
stop filling the tire, when it reaches recommended
pressure.
 The horn will sound three times if the tire is overfilled
and will continue to sound every five seconds if the
user continues to inflate the tire.
 The horn will sound once again when enough air is let
out to reach proper inflation level.
 The horn will also sound three times if the tire is then
underinflated and will continue to sound every five
seconds if the user continues to deflate the tire.
Trailer Tire Pressure Monitoring System
(TTPMS) — If Equipped
The Trailer Tire Pressure Monitoring System (TTPMS) is a
feature that displays the trailer tire pressure values and
warns the driver of a low tire pressure event based on the
driver’s set target tire pressure value, through TTPMS
settings found in the radio.
The TTPMS monitors the pressure of each tire and warns
the driver through the instrument cluster, when either a
low tire pressure condition falls below 25% of the driver’s
set pressure or if a system malfunction occurs. The
instrument cluster will display the actual tire pressure or
dashes for each of the trailer tires in the correct trailer
position, based on trailer configuration. The TTPMS can
support up to 12 trailer tires per configured trailer on up to
four configurable trailers
Úpage 191.

Trailer Tire Pressure Monitoring System

Trailer Tire Pressure Sensor Pairing
In order use this feature, the provided tire pressure
sensors must be installed in the desired trailer tires and
the sensors must be paired to the truck. If the target trailer
requires more than the provided four sensors, additional
sensors can be purchased at an authorized Ram
dealership.
With the sensors installed and the trailer near or
connected to your Ram truck, initiate the pairing process
by entering the settings menu in the radio and selecting
trailer. Select the desired trailer profile to pair to, open the
“Tire Pressure” menu, and hit “Setup All Tires”
Úpage 191.
NOTE:The vehicle may not be driven until the pairing process is
complete.

Trailer Tire Pressure Settings

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SAFETY283
(Continued)
Enhanced Seat Belt Use Reminder System
(BeltAlert)
Driver And Passenger BeltAlert — If Equipped
BeltAlert is a feature intended to remind the
driver and outboard front seat passenger (if
equipped with outboard front passenger seat
BeltAlert) to buckle their seat belts. The
BeltAlert feature is active whenever the ignition switch is
in the START or ON/RUN position.
Initial Indication
If the driver is unbuckled when the ignition switch is first in
the START or ON/RUN position, a chime will signal for a
few seconds. If the driver or outboard front seat passenger
(if equipped with outboard front passenger seat BeltAlert)
is unbuckled when the ignition switch is first in the START
or ON/RUN position the Seat Belt Reminder Light will turn
on and remain on until both outboard front seat belts are
buckled. The outboard front passenger seat BeltAlert is
not active when an outboard front passenger seat is
unoccupied.
BeltAlert Warning Sequence
The BeltAlert warning sequence is activated when the
vehicle is moving above a specified vehicle speed range
and the driver or outboard front seat passenger is
unbuckled (if equipped with outboard front passenger
seat BeltAlert) (the outboard front passenger seat
BeltAlert is not active when the outboard front passenger
seat is unoccupied). The BeltAlert warning sequence
starts by blinking the Seat Belt Reminder Light and
sounding an intermittent chime. Once the BeltAlert
warning sequence has completed, the Seat Belt Reminder
Light will remain on until the seat belts are buckled. The BeltAlert warning sequence may repeat based on
vehicle speed until the driver and occupied outboard front
seat passenger seat belts are buckled. The driver should
instruct all occupants to buckle their seat belts.
Change Of Status
If the driver or outboard front seat passenger
(if equipped with outboard front passenger seat BeltAlert)
unbuckles their seat belt while the vehicle is traveling, the
BeltAlert warning sequence will begin until the seat belts
are buckled again.
The outboard front passenger seat BeltAlert is not active
when the outboard front passenger seat is unoccupied.
BeltAlert may be triggered when an animal or other items
are placed on the outboard front passenger seat or when
the seat is folded flat (if equipped). It is recommended that
pets be restrained in the rear seat (if equipped) in pet
harnesses or pet carriers that are secured by seat belts,
and cargo is properly stowed.
BeltAlert can be activated or deactivated by an authorized
dealer. FCA US LLC does not recommend deactivating
BeltAlert.
NOTE:If BeltAlert has been deactivated and the driver or
outboard front seat passenger (if equipped with outboard
front passenger seat BeltAlert) is unbuckled the Seat Belt
Reminder Light will turn on and remain on until the driver
and outboard front seat passenger seat belts are buckled.
Lap/Shoulder Belts
All seating positions in your vehicle are equipped with lap/
shoulder belts.
The seat belt webbing retractor will lock only during very
sudden stops or collisions. This feature allows the
shoulder part of the seat belt to move freely with you
under normal conditions. However, in a collision the seat
belt will lock and reduce your risk of striking the inside of
the vehicle or being thrown out of the vehicle.
WARNING!

Relying on the air bags alone could lead to more
severe injuries in a collision. The air bags work with
your seat belt to restrain you properly. In some colli -
sions, the air bags won’t deploy at all. Always wear
your seat belt even though you have air bags.
 In a collision, you and your passengers can suffer
much greater injuries if you are not properly buckled
up. You can strike the interior of your vehicle or other
passengers, or you can be thrown out of the vehicle.
Always be sure you and others in your vehicle are
buckled up properly.
 It is dangerous to ride in a cargo area, inside or
outside of a vehicle. In a collision, people riding in
these areas are more likely to be seriously injured
or killed.
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288SAFETY
In Automatic Locking Mode, the shoulder belt is
automatically pre-locked. The seat belt will still retract to
remove any slack in the shoulder belt. Use the Automatic
Locking Mode anytime a child restraint is installed in a
seating position that has a seat belt with this feature.
Children 12 years old and under should always be properly
restrained in the rear seat of a vehicle with a rear seat.
How To Engage The Automatic Locking Mode

1. Buckle the combination lap and shoulder belt.

2. Grab the shoulder portion and pull downward until
the entire seat belt is extracted.
3. Allow the seat belt to retract. As the seat belt retracts, you will hear a clicking sound. This indicates the seat
belt is now in the Automatic Locking Mode. How To Disengage The Automatic Locking Mode
Unbuckle the combination lap/shoulder belt and allow it
to retract completely to disengage the Automatic Locking
Mode and activate the vehicle sensitive (emergency)
locking mode.
SUPPLEMENTAL RESTRAINT SYSTEMS
(SRS)
Some of the safety features described in this section may
be standard equipment on some models, or may be
optional equipment on others. If you are not sure, ask an
authorized dealer. The air bag system must be ready to protect you in a
collision. The Occupant Restraint Controller (ORC)
monitors the internal circuits and interconnecting wiring
associated with the electrical Air Bag System
Components. Your vehicle may be equipped with the
following Air Bag System Components:
Air Bag System Components

Occupant Restraint Controller (ORC)
 Air Bag Warning Light
 Steering Wheel and Column
 Instrument Panel
 Knee Impact Bolsters
 Driver and Front Passenger Air Bags
 Seat Belt Buckle Switch
 Supplemental Side Air Bags
 Front and Side Impact Sensors
 Seat Belt Pretensioners
 Seat Track Position Sensors
 Occupant Classification System
Air Bag Warning Light
The Occupant Restraint Controller (ORC)
monitors the readiness of the electronic parts
of the air bag system whenever the ignition
switch is in the START or ON/RUN position.
If the ignition switch is in the OFF position or in the ACC
position, the air bag system is not on and the air bags will
not inflate.
WARNING!
 Never place a rear-facing child restraint in front of an
air bag. A deploying passenger front air bag can
cause death or serious injury to a child 12 years or
younger, including a child in a rear-facing child
restraint.
 Never install a rear-facing child restraint in the front
seat of a vehicle. Only use a rear-facing child
restraint in the rear seat. If the vehicle does not have
a rear seat, do not transport a rear-facing child
restraint in that vehicle.
WARNING!
The seat belt assembly must be replaced if the
switchable Automatic Locking Retractor (ALR)
feature or any other seat belt function is not working
properly when checked according to the procedures
in the Service Manual.
 Failure to replace the seat belt assembly could
increase the risk of injury in collisions.
 Do not use the Automatic Locking Mode to restrain
occupants who are wearing the seat belt or children
who are using booster seats. The locked mode is only
used to install rear-facing or forward-facing child
restraints that have a harness for restraining the
child.

23_DT_OM_EN_USC_t.book Page 288

SAFETY289
The ORC contains a backup power supply system that may
deploy the air bag system even if the battery loses power
or it becomes disconnected prior to deployment.
The ORC turns on the Air Bag Warning Light in the
instrument panel for approximately four to eight seconds
for a self-check when the ignition switch is first in the
ON/RUN position. After the self-check, the Air Bag Warning
Light will turn off. If the ORC detects a malfunction in any
part of the system, it turns on the Air Bag Warning Light,
either momentarily or continuously. A single chime will
sound to alert you if the light comes on again after initial
startup.
The ORC also includes diagnostics that will illuminate the
instrument panel Air Bag Warning Light if a malfunction is
detected that could affect the air bag system. The
diagnostics also record the nature of the malfunction.
While the air bag system is designed to be maintenance
free, if any of the following occurs, have an authorized
dealer service the air bag system immediately.
The Air Bag Warning Light does not come on during the
four to eight seconds when the ignition switch is first in
the ON/RUN position.
 The Air Bag Warning Light remains on after the four to
eight-second interval.
 The Air Bag Warning Light comes on intermittently or
remains on while driving.NOTE:If the speedometer, tachometer, or any engine related
gauges are not working, the Occupant Restraint Controller
(ORC) may also be disabled. In this condition the air bags
may not be ready to inflate for your protection. Have an
authorized dealer service the air bag system immediately.
Redundant Air Bag Warning Light
If a fault with the Air Bag Warning Light is
detected, which could affect the Supplemental
Restraint System (SRS), the Redundant Air Bag
Warning Light will illuminate on the instrument
panel. The Redundant Air Bag Warning Light will stay on
until the fault is cleared. In addition, a single chime will
sound to alert you that the Redundant Air Bag Warning
Light has come on and a fault has been detected. If the
Redundant Air Bag Warning Light comes on intermittently
or remains on while driving have an authorized dealer
service the vehicle immediately
Úpage 107.
Front Air Bags
This vehicle has front air bags and lap/shoulder belts for
both the driver and front passenger. The front air bags are
a supplement to the seat belt restraint systems. The driver
front air bag is mounted in the center of the steering
wheel. The passenger front air bag is mounted in the
instrument panel, above the glove compartment. The
words “SRS AIRBAG” or “AIRBAG” are embossed on the air
bag covers.

Front Air Bag/Knee Bolster Locations

WARNING!
Ignoring the Air Bag Warning Light in your instrument
panel could mean you won’t have the air bag system to
protect you in a collision. If the light does not come on
as a bulb check when the ignition is first turned on,
stays on after you start the vehicle, or if it comes on as
you drive, have an authorized dealer service the air bag
system immediately.
1 — Driver And Passenger Front Air Bags
2 — Driver And Passenger Knee Impact Bolsters
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SAFETY291
Occupant Classification System (OCS) —
Front Passenger Seat
The Occupant Classification System (OCS) is part of a
Federally regulated safety system for this vehicle. It is
designed to provide Passenger Advanced Front Air Bag
output appropriate to the occupant’s seated weight, as
determined by the OCS.
The Occupant Classification System (OCS) consists of the
following:
Occupant Restraint Controller (ORC)
 Occupant Classification Module (OCM) and Sensor
located in the front passenger seat
 Air Bag Warning Light Occupant Classification Module (OCM) And Sensor
The Occupant Classification Module (OCM) is located
underneath the front passenger seat. The Sensor is
located beneath the passenger seat cushion foam.
Any weight on the seat will be sensed by the Sensor.
The OCM uses input from the Sensor to determine the
front passenger’s most probable classification. The OCM
communicates this information to the ORC. The ORC may
reduce the inflation rate of the Passenger Advanced Front
Air Bag deployment based on occupant classification. In
order for the OCS to operate as designed, it is important
for the front passenger to be seated properly and properly
wearing the seat belt.
The OCS will NOT prevent deployment of the Passenger
Advanced Front Air Bag. The OCS may reduce the inflation
rate of the Passenger Advanced Front Air Bag if the OCS
estimates that:

The front passenger seat is unoccupied or has very
light objects on it; or
 The front passenger seat is occupied by a small
passenger, including a child; or
 The front passenger seat is occupied by a rear-facing
child restraint; or
 The front passenger is not properly seated or his or her
weight is taken off of the seat for a period of time.
* It is possible for a child to be classified as an adult, allowing a full-power Passenger Advanced Front Air Bag deployment. Never allow children to ride in the front passenger seat and
never install a child restraint system, including a rear-facing child restraint, in the front passenger seat.
Front Passenger Seat Occupant Status Front Passenger Air Bag Output
Rear-facing child restraint Reduced-power deployment
Child, including a child in a forward-facing child restraint or booster seat* Reduced-power deployment OR full-power deployment
Properly seated adult Full-power deployment OR reduced-power deployment
Unoccupied seat Reduced-power deployment6

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292SAFETY
The OCS determines the front passenger’s most probable
classification. The OCS estimates the seated weight on the
front passenger seat and where that weight is located. The
OCS communicates the classification status to the ORC.
The ORC uses the classification to determine whether the
Passenger Advanced Front Air Bag inflation rate should be
adjusted.
In order for the OCS to operate as designed, it is important
for the front passenger to be seated properly and properly
wearing the seat belt. Properly seated passengers are:
Sitting upright
 Facing forward 
Sitting in the center of the seat with their feet comfort -
ably on or near the floor
 Sitting with their back against the seatback and the
seatback in an upright position
Seated Properly

Lighter Weight Passengers (Including Small Adults)
When a lighter weight passenger, including a small adult,
occupies the front passenger seat, the OCS may reduce
the inflation rate of the Passenger Advanced Front Air Bag.
This does not mean that the OCS is working improperly.
Do not decrease OR increase the front passenger’s seated
weight on the front passenger seat
The front passenger’s seated weight must be properly
positioned on the front passenger seat. Failure to do so
may result in serious injury or death. The OCS determines
the most probable classification of the occupant that it
detects. The OCS will detect the front passenger’s
decreased or increased seated weight, which may result in
an adjusted inflation rate of the Passenger Advanced
Front Air Bag in a collision. This does not mean that the OCS is working improperly.
Decreasing the front passenger’s seated weight on the
front passenger seat may result in a reduced-power
deployment of the Passenger Advanced Front Air Bag.
Increasing the front passenger’s seated weight on the
front passenger seat may result in a full-power
deployment of the Passenger Advanced Front Air Bag.
Examples of improper front passenger seating include:

The front passenger’s weight is transferred to another
part of the vehicle (like the door, arm rest or instrument
panel).
 The front passenger leans forward, sideways, or turns
to face the rear of the vehicle.
 The front passenger’s seatback is not in the full upright
position.
 The front passenger carries or holds an object while
seated (e.g., backpack, box, etc.).
 Objects are lodged under the front passenger seat.
 Objects are lodged between the front passenger seat
and center console.
 Accessories that may change the seated weight on the
front passenger seat are attached to the front
passenger seat.
 Anything that may decrease or increase the front
passenger’s seated weight.
WARNING!
Never place a rear-facing child restraint in front of an
air bag. A deploying passenger front air bag can
cause death or serious injury to a child 12 years
or younger, including a child in a rear-facing
child restraint.
 Never install a rear-facing child restraint in the front
seat of a vehicle. Only use a rear-facing child
restraint in the rear seat. If the vehicle does not have
a rear seat, do not transport a rear-facing child
restraint in that vehicle.
 Children 12 years or younger should always ride
buckled up in the rear seat of a vehicle with a
rear seat.

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294SAFETY
The Air Bag Warning Light in the instrument panel will
turn on whenever the OCS is unable to classify the front
passenger seat status. A malfunction in the OCS may
affect the operation of the air bag system.
If the Air Bag Warning Light does not come on, or stays
on after you start the vehicle, or it comes on as you drive,
take the vehicle to an authorized dealer for service
immediately.
The passenger seat assembly contains critical OCS
components that may affect the Passenger Advanced
Front Air Bag inflation. In order for the OCS to properly
classify the seated weight of a front seat passenger, the
OCS components must function as designed. Do not make
any modifications to the front passenger seat
components, assembly, or to the seat cover. If the seat,
trim cover, or cushion needs service for any reason, take
the vehicle to an authorized dealer. Only FCA US LLC
approved seat accessories may be used.
The following requirements must be strictly followed:
Do not modify the front passenger seat assembly or
components in any way.
 Do not use prior or future model year seat covers or
cushions not designated by FCA US LLC for the specific
model being repaired. Always use the correct seat
cover and cushion specified for the vehicle. 
Do not replace the seat cover or cushion with an after -
market seat cover or cushion.
 Do not add a secondary seat cover or mat.
 At no time should any Supplemental Restraint System
(SRS) component or SRS related component or
fastener be modified or replaced with any part except
those which are approved by FCA US LLC.Knee Impact Bolsters
The Knee Impact Bolsters help protect the knees of the
driver and front passenger, and position the front
occupants for improved interaction with the front air bags.
Supplemental Side Air Bags
Supplemental Seat-Mounted Side Air Bags (SABs)
This vehicle is equipped with Supplemental Seat-Mounted
Side Air Bags (SABs).
Supplemental Seat-Mounted Side Air Bags (SABs) are
located in the outboard side of the front seats. The SABs
are marked with “SRS AIRBAG” or “AIRBAG” on a label or
on the seat trim on the outboard side of the seats.
The SABs may help to reduce the risk of occupant injury
during certain side impacts, in addition to the injury
reduction potential provided by the seat belts and body
structure.
WARNING!
Unapproved modifications or service procedures to
the passenger seat assembly, its related compo -
nents, seat cover or cushion may inadvertently
change the air bag deployment in case of a frontal
collision. This could result in death or serious injury
to the front passenger if the vehicle is involved in a
collision. A modified vehicle may not comply with
required Federal Motor Vehicle Safety Standards
(FMVSS) and/or Canadian Motor Vehicle Safety
Standards (CMVSS).
 If it is necessary to modify the air bag system
for persons with disabilities, contact an authorized
dealer.
WARNING!
Do not drill, cut, or tamper with the knee impact
bolsters in any way.
 Do not mount any accessories to the knee impact
bolsters such as alarm lights, stereos, citizen band
radios, etc.

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