2018 Ram 3500 Chassis Cab ECU

Onboard Diagnostic System (OBD II) Cybersecurity
Your vehicle is required to have an Onboard Diagnostic
system (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 ac-
cess this information to assist with the diagnosis and
service of your vehicle and emissions system.
WARNING!
•ONLY an authorized service technician should con-
nect equipment to the OBD II connection port in
order to 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.
For further information, refer to “Cybersecurity” in “Mul-
timedia”.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass an
inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration. For states that require an Inspection and Mainte-
nance (I/M), this check verifies the “Malfunction
Indicator Light (MIL)” is functioning and is not on
when the engine is running, and that the OBD II system is
ready for testing.
Normally, the OBD II system will be ready. The OBD II
system may notbe ready if your vehicle was recently
serviced, recently had a dead battery or a battery replace-
ment. If the OBD II system should be determined not ready
for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition actuated test, which you
can use prior to going to the test station. To check if your
vehicle’s OBD II system is ready, you must do the follow-
ing:
1. Cycle the ignition switch to the ON position, but do not crank or start the engine.
NOTE: If you crank or start the engine, you will have to
start this test over.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 157

NOTE:Changes or modifications not expressly approved
by the party responsible for compliance could void the
user ’s authority to operate the equipment.
OCCUPANT RESTRAINT SYSTEMS
Some of the most important safety features in your vehicle
are the restraint systems:
Occupant Restraint Systems Features
• Seat Belt Systems
• Supplemental Restraint Systems (SRS) Air Bags
• Child Restraints
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 your autho-
rized dealer.
Important Safety Precautions
Please pay close attention to the information in this section.
It tells you how to use your restraint system properly, to
keep you and your passengers as safe as possible. Here are some simple steps you can take to minimize the
risk of harm from a deploying air bag:
1. Children 12 years old and under should always ride
buckled up in a vehicle with a rear seat.
2. If a child from 2 to 12 years old (not in a rear-facing child restraint) must ride in the front passenger seat, move the
seat as far back as possible and use the proper child
restraint (refer to “Child Restraints” in this section for
further information).
3. Children that are not big enough to wear the vehicle seat belt properly (refer to “Child Restraints” in this section
for further information) should be secured in a vehicle
with a rear seat in child restraints or belt-positioning
booster seats. Older children who do not use child
restraints or belt-positioning booster seats should ride
properly buckled up in a vehicle with a rear seat.
4. Never allow children to slide the shoulder belt behind them or under their arm.
5. You should read the instructions provided with your child restraint to make sure that you are using it
properly.
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SAFETY 179

a few seconds. If the driver or outboard front seat passen-
ger (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 unbuck-
led (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 buck-
led 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 your autho-
rized dealer. FCA US LLC does not recommend deactivat-
ing 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.
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SAFETY 181

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. For
additional information, refer to “Installing Child Restraints
Using The Vehicle Seat Belt” under the “Child Restraints”
section of this manual. The figure below illustrates the
locking feature for each seating position.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 occu-
pant’s mid-section. Slide the latch plate into the buckle
until you hear aclick.
Regular Cab Automatic Locking Retractor (ALR) Locations
ALR = Switchable Automatic Locking Retractor
Crew Cab Automatic Locking Retractor (ALR) Locations
ALR = Switchable Automatic Locking Retractor
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WARNING!(Continued)
dealer. Only manufacturer approved seat accessories
may be used. If it is necessary to modify the air bag
system for persons with disabilities, contact your
authorized dealer.
Event Data Recorder (EDR)
This vehicle is equipped with an event data recorder
(EDR). The main purpose of an EDR is to record, in certain
crash or near crash-like situations, such as an air bag
deployment or hitting a road obstacle, data that will assist
in understanding how a vehicle’s systems performed. The
EDR is designed to record data related to vehicle dynamics
and safety systems for a short period of time, typically 30
seconds or less. The EDR in this vehicle is designed to
record such data as:
•How various systems in your vehicle were operating;
• Whether or not the driver and passenger safety belts
were buckled/fastened;
• How far (if at all) the driver was depressing the accel-
erator and/or brake pedal; and,
• How fast the vehicle was traveling. These data can help provide a better understanding of the
circumstances in which crashes and injuries occur.
NOTE:
EDR data are recorded by your vehicle only if a
non-trivial crash situation occurs; no data are recorded by
the EDR under normal driving conditions and no personal
data (e.g., name, gender, age, and crash location) are
recorded. However, other parties, such as law enforcement,
could combine the EDR data with the type of personally
identifying data routinely acquired during a crash investi-
gation.
To read data recorded by an EDR, special equipment is
required, and access to the vehicle or the EDR is needed. In
addition to the vehicle manufacturer, other parties, such as
law enforcement, that have the special equipment, can read
the information if they have access to the vehicle or the
EDR.
Child Restraints
Everyone in your vehicle needs to be buckled up at all
times, including babies and children. Every state in the
United States, and every Canadian province, requires that
small children ride in proper restraint systems. This is the
law, and you can be prosecuted for ignoring it.
204 SAFETY

Older Children And Child Restraints
Children who are two years old or who have outgrown
their rear-facing convertible child seat can ride forward-
facing in the vehicle. Forward-facing child seats and con-
vertible child seats used in the forward-facing direction are
for children who are over two years old or who have
outgrown the rear-facing weight or height limit of their
rear-facing convertible child seat. Children should remain
in a forward-facing child seat with a harness for as long as
possible, up to the highest weight or height allowed by the
child seat.
All children whose weight or height is above the forward-
facing limit for the child seat should use a belt-positioning
booster seat until the vehicle’s seat belts fit properly. If the
child cannot sit with knees bent over the vehicle’s seat
cushion while the child’s back is against the seatback, they
should use a belt-positioning booster seat. The child and
belt-positioning booster seat are held in the vehicle by the
seat belt.
WARNING!
•Improper installation can lead to failure of an infant
or child restraint. It could come loose in a collision.
The child could be badly injured or killed. Follow
the child restraint manufacturer ’s directions exactly
when installing an infant or child restraint.
• After a child restraint is installed in the vehicle, do
not move the vehicle seat forward or rearward be-
cause it can loosen the child restraint attachments.
Remove the child restraint before adjusting the ve-
hicle seat position. When the vehicle seat has been
adjusted, reinstall the child restraint.
• When your child restraint is not in use, secure it in
the vehicle with the seat belt or LATCH anchorages,
or remove it from the vehicle. Do not leave it loose in
the vehicle. In a sudden stop or accident, it could
strike the occupants or seatbacks and cause serious
personal injury.
208 SAFETY

forward and rearward in the vehicle, you may wish to
move it to its rear-most position to make room for the
child seat. You may also move the front seat forward to
allow more room for the child seat.
3. Attach the lower hooks or connectors of the child restraint to the lower anchorages in the selected seating
position.
4. If the child restraint has a tether strap, connect it to the top tether anchorage. See the section “Installing Child
Restraints Using the Top Tether Anchorage” for direc-
tions to attach a tether anchor.
5. Tighten all of the straps as you push the child restraint rearward and downward into the seat. Remove slack in
the straps according to the child restraint manufactur-
er ’s instructions.
6. Test that the child restraint is installed tightly by pulling back and forth on the child seat at the belt path. It
should not move more than 1 inch (25.4 mm) in any
direction.
How To Stow An Unused Switchable-ALR (ALR)
Seat Belt:
When using the LATCH attaching system to install a child
restraint, stow all ALR seat belts that are not being used by other occupants or being used to secure child restraints. An
unused belt could injure a child if they play with it and
accidentally lock the seat belt retractor. Before installing a
child restraint using the LATCH system, buckle the seat
belt behind the child restraint and out of the child’s reach.
If the buckled seat belt interferes with the child restraint
installation, instead of buckling it behind the child re-
straint, route the seat belt through the child restraint belt
path and then buckle it. Do not lock the seat belt. Remind
all children in the vehicle that the seat belts are not toys and
that they should not play with them.
WARNING!
•
Improper installation of a child restraint to the
LATCH anchorages can lead to failure of the re-
straint. The child could be badly injured or killed.
Follow the child restraint manufacturer ’s directions
exactly when installing an infant or child restraint.
• Child restraint anchorages are designed to withstand
only those loads imposed by correctly-fitted child
restraints. Under no circumstances are they to be
used for adult seat belts, harnesses, or for attaching
other items or equipment to the vehicle.
218 SAFETY

Installing Child Restraints Using The Vehicle Seat
Belt
Child restraint systems are designed to be secured in
vehicle seats by lap belts or the lap belt portion of a
lap/shoulder belt.
WARNING!
•Improper installation or failure to properly secure a
child restraint can lead to failure of the restraint. The
child could be badly injured or killed.
• Follow the child restraint manufacturer ’s directions
exactly when installing an infant or child restraint.
Regular Cab Only
The seat belts in the passenger seating positions are
equipped with a Switchable Automatic Locking Retractor
(ALR) that is designed to keep the lap portion of the seat
belt tight around the child restraint so that it is not
necessary to use a locking clip. The ALR retractor can be
“switched” into a locked mode by pulling all of the
webbing out of the retractor and then letting the webbing
retract back into the retractor. If it is locked, the ALR will
make a clicking noise while the webbing is pulled back into
the retractor. Refer to the “Automatic Locking Mode” description in “Switchable Automatic Locking Retractors
(ALR)” under “Occupant Restraint Systems” for additional
information on ALR.
Crew Cab: Split Bench And Full Bench
The seat belts in the passenger seating positions are
equipped with either a Switchable Automatic Locking
Retractor (ALR) or a cinching latch plate or both. Both
types of seat belts are designed to keep the lap portion of
the seat belt tight around the child restraint so that it is not
necessary to use a locking clip. The ALR retractor can be
“switched” into a locked mode by pulling all of the
webbing out of the retractor and then letting the webbing
retract back into the retractor. If it is locked, the ALR will
make a clicking noise while the webbing is pulled back into
the retractor. Refer to the “Automatic Locking Mode”
description in “Switchable Automatic Locking Retractors
(ALR)” under “Occupant Restraint Systems” for additional
information on ALR. The cinching latch plate is designed to
hold the lap portion of the seat belt tight when webbing is
pulled tight and straight through a child restraint’s belt
path.
Please see the table below and the following sections for
more information.5
SAFETY 219