2021 RAM 1500 warning

SAFETY341
(Continued)
Switchable Automatic Locking Retractors
(ALR)
The seat belts in the passenger seating
positions are equipped with a Switchable
Automatic Locking Retractor (ALR) which is
used to secure a child restraint system
Ú page 364. The figure below illustrates the
locking feature for each seating position.

Automatic Locking Retractor — (ALR) Locations

If the passenger seating position is equipped
with an ALR and is being used for normal usage,
only pull the seat belt webbing out far enough to
comfortably wrap around the occupant’s
mid-section so as to not activate the ALR. If the
ALR is activated, you will hear a clicking sound
as the seat belt retracts. Allow the webbing to
retract completely in this case and then
carefully pull out only the amount of webbing necessary to comfortably wrap around the
occupant’s mid-section. Slide the latch plate
into the buckle until you hear a "click."
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.
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.
6

21_DT_OM_EN_USC_t.book Page 341

342SAFETY
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. 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.
Failure to replace the seat belt assembly
could increase the risk of injury in colli
-
sions.
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.
WARNING! (Continued)

21_DT_OM_EN_USC_t.book Page 342

SAFETY343
(Continued)
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 intermit -
tently 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
Ú page 126.
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
WARNING!
Being too close to the steering wheel or
instrument panel during front air bag
deployment could cause serious injury,
including death. Air bags need room to
inflate. Sit back, comfortably extending
your arms to reach the steering wheel or
instrument panel.
6

21_DT_OM_EN_USC_t.book Page 343

344SAFETY
(Continued)
Driver And Passenger Front Air Bag
Features
The Advanced Front Air Bag system has
multistage driver and front passenger air bags.
This system provides output appropriate to the
severity and type of collision as determined by
the Occupant Restraint Controller (ORC), which
may receive information from the front impact
sensors (if equipped) or other system
components.
The first stage inflator is triggered immediately
during an impact that requires air bag
deployment. A low energy output is used in less severe collisions. A higher energy output is used
for more severe collisions.
This vehicle may be equipped with a driver and/
or front passenger seat belt buckle switch that
detects whether the driver or front passenger
seat belt is buckled. The seat belt buckle switch
may adjust the inflation rate of the Advanced
Front Air Bags.
This vehicle may be equipped with driver and/or
front passenger seat track position sensors that
may adjust the inflation rate of the Advanced
Front Air Bags based upon seat position.
This vehicle is equipped with a right front
passenger Occupant Classification System
(“OCS”) that is designed to provide Passenger
Advanced Front Air Bag output appropriate to
the occupant’s seated weight input, as
determined by the OCS.Front Air Bag Operation
Front Air Bags are designed to provide
additional protection by supplementing the seat
belts. Front air bags are not expected to reduce
the risk of injury in rear, side, or rollover
collisions. The front air bags will not deploy in all
frontal collisions, including some that may
produce substantial vehicle damage — for
example, some pole collisions, truck
underrides, and angle offset collisions.
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!
(Continued)
WARNING!
No objects should be placed over or near
the air bag on the instrument panel or
steering wheel because any such objects
could cause harm if the vehicle is in a colli -
sion severe enough to cause the air bag to
inflate.
Do not put anything on or around the air
bag covers or attempt to open them manu -
ally. You may damage the air bags and you
could be injured because the air bags may
no longer be functional. The protective
covers for the air bag cushions are
designed to open only when the air bags
are inflating.
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 collisions, air bags won’t
deploy at all. Always wear your seat belts
even though you have air bags.
WARNING! (Continued)

21_DT_OM_EN_USC_t.book Page 344

SAFETY345
On the other hand, depending on the type and
location of impact, front air bags may deploy in
crashes with little vehicle front-end damage but
that produce a severe initial deceleration.
Because air bag sensors measure vehicle
deceleration over time, vehicle speed and
damage by themselves are not good indicators
of whether or not an air bag should have
deployed.
Seat belts are necessary for your protection in
all collisions, and also are needed to help keep
you in position, away from an inflating air bag.
When the Occupant Restraint Controller (ORC)
detects a collision requiring the front air bags, it
signals the inflator units. A large quantity of
non-toxic gas is generated to inflate the front air
bags.
The steering wheel hub trim cover and the
upper passenger side of the instrument panel
separate and fold out of the way as the air bags
inflate to their full size. The front air bags fully
inflate in less time than it takes to blink your
eyes. The front air bags then quickly deflate
while helping to restrain the driver and front
passenger.Occupant Classification System (OCS) —
Front Passenger Seat
The 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.
6

21_DT_OM_EN_USC_t.book Page 345

346SAFETY
* 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.
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
comfortably on or near the floor
Sitting with their back against the seatback
and the seatback in an upright position

Seated Properly

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 deployment
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.

21_DT_OM_EN_USC_t.book Page 346

348SAFETY
(Continued)

Not Seated Properly
Not Seated Properly
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
WARNING!
If a child restraint system, child, small teen
-
ager or adult in the front passenger seat is
seated improperly, the occupant may
provide an output signal to the OCS that is
different from the occupant’s properly
seated weight input. This may result in
serious injury or death in a collision.
Always wear your seat belt and sit properly,
with the seatback in an upright position,
your back against the seatback, sitting
upright, facing forward, in the center of the
seat, with your feet comfortably on or near
the floor.
Do not carry or hold any objects (e.g., back -
packs, boxes, etc.) while seated in the front
passenger seat. Holding an object may
provide an output signal to the OCS that is
different than the occupant’s properly
seated weight input, which may result in
serious injury or death in a collision.
Placing an object on the floor under the
front passenger seat may prevent the OCS
from working properly, which may result in
serious injury or death in a collision. Do not
place any objects on the floor under the
front passenger seat.
WARNING! (Continued)

21_DT_OM_EN_USC_t.book Page 348

SAFETY349
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 aftermarket 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 proce -
dures to the passenger seat assembly, its
related components, 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.
6

21_DT_OM_EN_USC_t.book Page 349