2018 Ram 2500 ECU

Vehicles equipped with the Anti-Lock Brake
System (ABS) are also equipped with Elec-
tronic Brake Force Distribution (EBD). In the
event of an EBD failure, the Brake Warning
Light will turn on along with the ABS Light.
Immediate repair to the ABS system is re-
quired.
Operation of the Brake Warning Light can be
checked by turning the ignition switch from
the OFF position to the ON/RUN position.
The light should illuminate for approximately
two seconds. The light should then turn off
unless the parking brake is applied or a brake
fault is detected. If the light does not illumi-
nate, have the light inspected by your autho-
rized dealer.
The light also will turn on when the parking
brake is applied with the ignition switch in
the ON/RUN position.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake
application.— Vehicle Security Warning Light — If
Equipped
This light will flash at a fast rate for approxi-
mately 15 seconds when the vehicle security
alarm is arming, and then will flash slowly
until the vehicle is disarmed.
— Engine Coolant Temperature Warn-
ing Light
This light warns of an overheated engine
condition. If the engine coolant temperature
is too high, this indicator will illuminate and a
single chime will sound. If the temperature
reaches the upper limit, a continuous chime
will be sound for four minutes or until the
engine is able to cool: whichever comes first.
If the light turns on while driving, safely pull
over and stop the vehicle. If the A/C system is
on, turn it off. Also, shift the transmission
into NEUTRAL and idle the vehicle. If the
temperature reading does not return to nor-
mal, turn the engine off immediately and call
for service. Refer to “If Your Engine Over-
heats” in “In Case Of Emergency” for further
information.
— Battery Charge Warning Light
This light illuminates when the battery is not
charging properly. If it stays on while the
engine is running, there may be a malfunc-
tion with the charging system. Contact your
authorized dealer as soon as possible.
This indicates a possible problem with the
electrical system or a related component.
— Oil Pressure Warning Light
This light indicates low engine oil pressure. If
the light turns on while driving, stop the
vehicle and shut off the engine as soon as
possible. A chime will sound when this light
turns on.
Do not operate the vehicle until the cause is
corrected. This light does not indicate how
much oil is in the engine. The engine oil level
must be checked under the hood.
— Electronic Throttle Control (ETC)
Warning Light
This light informs you of a problem with the
Electronic Throttle Control (ETC) system. If a
problem is detected while the vehicle is run-
ning, the light will either stay on or flash
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CAUTION!
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 dam-
age and power loss will soon occur. Im-
mediate service is required.
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
access this information to assist with the
diagnosis and service of your vehicle and
emissions system.
WARNING!
• ONLY an authorized service technicianshould connect 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 ve-
hicle control could occur that may
result in an accident involving seri-
ous injury or death.
• Access, or allow others to access,
information stored in your vehicle
systems, including personal infor-
mation. For further information, refer to “Cybersecu-
rity” in “Multimedia”.
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• Installing aftermarket window tinting thatcontains 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 TPM sensors.
General Information
This device complies with Part 15 of the FCC
rules and RSS 210 of Industry Canada. Op-
eration is subject to the following conditions:
1. This device may not cause harmful
interference.
2. This device must accept any interference received, including interference that may
cause undesired operation.
NOTE:
Changes or modifications not expressly ap-
proved by the party responsible for compli-
ance could void the user’s authority to oper-
ate 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 fur-
ther 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.
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BeltAlert Warning Sequence
The BeltAlert warning sequence is activated
when the vehicle is moving above a specified
vehicle speed range and the driver or out-
board 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 passen-
ger 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 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 Re-
minder 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 except the Quad Cab,
Mega Cab and Crew Cab front center seating
position have combination 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.
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Position the lap belt snug and low below the
abdomen and across the strong bones of the
hips. Place the shoulder belt across the chest
and away from the neck. Never place the
shoulder belt behind the back or under the
arm.
Seat Belt Pretensioner
The front seat belt system is equipped with
pretensioning devices that are designed to
remove slack from the seat belt in the event
of a collision. These devices may improve the
performance of the seat belt by removing
slack from the seat belt early in a collision.
Pretensioners work for all size occupants,
including those in child restraints.
NOTE:
These devices are not a substitute for proper
seat belt placement by the occupant. The
seat belt still must be worn snugly and posi-
tioned properly.
The pretensioners are triggered by the Occu-
pant Restraint Controller (ORC). Like the air
bags, the pretensioners are single use items.
A deployed pretensioner or a deployed air bag
must be replaced immediately.
Energy Management Feature
The front seat belt system is equipped with
an Energy Management feature that may help
further reduce the risk of injury in the event
of a collision. The seat belt system has a
retractor assembly that is designed to release
webbing in a controlled manner.
Switchable Automatic Locking Retractors
(ALR)
The seat belts in the passenger seating posi-
tions may be 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.Regular Cab Automatic Locking Retractor(ALR) Locations
ALR = Switchable Automatic Locking
Retractor
SAFETY
102

WARNING!
erly if modifications are made. Take your
vehicle to an authorized dealer for any
air bag system service. If your seat, in-
cluding your trim cover and cushion,
needs to be serviced in any way (includ-
ing removal or loosening/tightening of
seat attachment bolts), take the vehicle
to your authorized dealer. Only manufac-
turer 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 per-
formed. The EDR is designed to record data
related to vehicle dynamics and safety sys-
tems for a short period of time, typically30 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 accelerator and/or brake pedal; and,
• How fast the vehicle was traveling.
These data can help provide a better under-
standing 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 re-
corded. However, other parties, such as law
enforcement, could combine the EDR data
with the type of personally identifying data
routinely acquired during a crash investiga-
tion.
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 chil-
dren. 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.
Children 12 years or younger should ride
properly buckled up in a rear seat, if avail-
able. According to crash statistics, children
are safer when properly restrained in the rear
seats rather than in the front.
WARNING!
In a collision, an unrestrained child can
become a projectile inside the vehicle. The
force required to hold even an infant on
your lap could become so great that you
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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 convertible
child seats used in the forward-facing direc-
tion 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 re-
main 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 failureof 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 direc-
tions 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 because it can
loosen the child restraint attachments.
Remove the child restraint before ad-
justing the vehicle seat position. When
the vehicle seat has been adjusted, re-
install 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.
Children Too Large For Booster Seats
Children who are large enough to wear the
shoulder belt comfortably, and whose legs are
long enough to bend over the front of the seat
when their back is against the seatback,
should use the seat belt in a rear seat. Use
this simple 5-step test to decide whether the
child can use the vehicle’s seat belt alone:
1. Can the child sit all the way back against the back of the vehicle seat?
2. Do the child’s knees bend comfortably over the front of the vehicle seat – while
the child is still sitting all the way back?
3. Does the shoulder belt cross the child’s shoulder between their neck and arm?
4. Is the lap part of the belt as low as possible, touching the child’s thighs and
not the stomach?
5. Can the child stay seated like this for the whole trip?
If the answer to any of these questions was
“no,” then the child still needs to use a
booster seat in this vehicle. If the child is
using the lap/shoulder belt, check seat belt
fit periodically and make sure the seat belt
SAFETY
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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 ofthe 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 Re-
straints Using the Top Tether Anchorage”
for directions 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 manufac-
turer’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 occu- pants 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 inter-
feres with the child restraint installation, in-
stead 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 restraint. 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. Un-
WARNING!
der no circumstances are they to be used
for adult seat belts, harnesses, or for
attaching other items or equipment to
the vehicle.
Installing Child Restraints Using The Ve-
hicle 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 prop-erly 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 in-
fant or child restraint.
The seat belts in the passenger seating posi-
tions are equipped with either a Switchable
Automatic Locking Retractor (ALR) or a
cinching latch plate or both. Both types of
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