2019 RAM CHASSIS CAB service

186 SAFETY
Operation:
• The horn will chirp once when the selected pressure is
reached to let the user know when to stop inflating or
deflating the tire.
• The horn will chirp three times if the tire is over inflated or
over deflated and will continue to chirp every five seconds
if the user continues to inflate or deflate the tire.
• The horn will chirp once again when enough air is added
or removed to reach proper selected pressure level.
Tire Pressure Information System (TPIS) 3500 Series
Trucks
Your vehicle may be equipped with a Tire Pressure Informa -
tion System (TPIS).
The Tire Pressure Information System (TPIS) uses wireless
technology with wheel rim mounted electronic sensors to
transmit tire pressure levels. Sensors mounted to each wheel
as part of the valve stem transmit tire pressure readings to
the receiver module.
NOTE:
It is particularly important for you to check the tire pressure
in all of the tires on your vehicle monthly and to maintain the
proper pressure. The TPIS consists of the following components:
• Receiver module
• Four TPM sensors (Single Rear Wheel (SRW) applications)
• Six TPM sensors (Dual Rear Wheel (DRW) applications)
• Pressure display in the instrument cluster
The TPIS system will display all four (Single Rear Wheel
(SRW) applications) or six (Dual Rear Wheel (DRW) applica -
tions) tire pressure values in the instrument cluster display.
If a system fault is detected, 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 "SERVICE TPM SYSTEM" message will no
longer be displayed, 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
TPM sensors.

188 SAFETY
(Continued)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 the rear seat of a vehicle with a rear seat.
2. A child who is not big enough to wear the vehicle seat belt
properly (Refer to “Child Restraints” in this section for
further information) must be secured in the appropriate
child restraint or belt-positioning booster seat in a rear
seating position.
3. 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).
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.
6. All occupants should always wear their lap and shoulder
belts properly.
7. The driver and front passenger seats should be moved
back as far as practical to allow the front air bags room to
inflate.
8. Do not lean against the door or window. If your vehicle
has side air bags, and deployment occurs, the side air
bags will inflate forcefully into the space between occu -
pants and the door and occupants could be injured.
9. If the air bag system in this vehicle needs to be modified
to accommodate a disabled person, refer to the
“Customer Assistance” section for customer service
contact information.
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.

202 SAFETY
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 stan -
dard 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 — If Equipped
• Front and Side Impact Sensors — If Equipped
• Seat Belt Pretensioners — If EquippedWARNING!
• The seat belt assembly must be replaced if the switch -
able 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.

SAFETY 203
Air Bag Warning Light
The ORC monitors the readiness of the elec -
tronic 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 posi -
tion 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 instru -
ment 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.
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. 4

SAFETY 211
If A Deployment Occurs
The front air bags are designed to deflate immediately after
deployment.
NOTE:
Front and/or side air bags will not deploy in all collisions.
This does not mean something is wrong with the air bag
system.
If you do have a collision which deploys the air bags, any or
all of the following may occur:
• The air bag material may sometimes cause abrasions and/
or skin reddening to the occupants as the air bags deploy
and unfold. The abrasions are similar to friction rope burns
or those you might get sliding along a carpet or gymna -
sium floor. They are not caused by contact with chemicals.
They are not permanent and normally heal quickly.
However, if you haven’t healed significantly within a few
days, or if you have any blistering, see your doctor imme -
diately.
• As the air bags deflate, you may see some smoke-like parti -
cles. The particles are a normal by-product of the process
that generates the non-toxic gas used for air bag inflation.
These airborne particles may irritate the skin, eyes, nose, or
throat. If you have skin or eye irritation, rinse the area with cool water. For nose or throat irritation, move to fresh air.
If the irritation continues, see your doctor. If these particles
settle on your clothing, follow the garment manufacturer’s
instructions for cleaning.
Do not drive your vehicle after the air bags have deployed. If
you are involved in another collision, the air bags will not be
in place to protect you.
NOTE:
• Air bag covers may not be obvious in the interior trim, but
they will open during air bag deployment.
• After any collision, the vehicle should be taken to an
authorized dealer immediately. WARNING!
Deployed air bags and seat belt pretensioners cannot
protect you in another collision. Have the air bags, seat
belt pretensioners, and the seat belt retractor assemblies
replaced by an authorized dealer immediately. Also,
have the Occupant Restraint Controller System serviced
as well. 4

SAFETY 213
(Continued)Enhanced Accident Response System Reset Procedure
In order to reset the Enhanced Accident Response System
functions after an event, the ignition switch must be changed
from ignition START or ON/RUN to ignition OFF. Carefully
check the vehicle for fuel leaks in the engine compartment
and on the ground near the engine compartment and fuel
tank before resetting the system and starting the engine.
Maintaining Your Air Bag System
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 systemsWARNING!
• Modifications to any part of the air bag system could
cause it to fail when you need it. You could be injured
if the air bag system is not there to protect you. Do not
modify the components or wiring, including adding
any kind of badges or stickers to the steering wheel hub
trim cover or the upper passenger side of the instru -
ment panel. Do not modify the front bumper, vehicle
body structure, or add aftermarket side steps or
running boards.
• It is dangerous to try to repair any part of the air bag
system yourself. Be sure to tell anyone who works on
your vehicle that it has an air bag system. • Do not attempt to modify any part of your air bag
system. The air bag may inflate accidentally or may not
function properly if modifications are made. Take your
vehicle to an authorized dealer for any air bag system
service. If your seat, including your trim cover and
cushion, needs to be serviced in any way (including
removal or loosening/tightening of seat attachment
bolts), take the vehicle to an authorized dealer. Only
manufacturer approved seat accessories may be used. If
it is necessary to modify the air bag system for persons
with disabilities, contact an authorized dealer. WARNING! (Continued)
4

SAFETY 241
Whenever a change is noticed in the sound of the exhaust
system, when exhaust fumes can be detected inside the
vehicle, or when the underside or rear of the vehicle is
damaged, have a competent mechanic inspect the complete
exhaust system and adjacent body areas for broken,
damaged, deteriorated, or mispositioned parts. Open seams
or loose connections could permit exhaust fumes to seep into
the passenger compartment. In addition, inspect the exhaust
system each time the vehicle is raised for lubrication or oil
change. Replace as required.
Safety Checks You Should Make Inside The Vehicle
Seat Belts
Inspect the seat belt system periodically, checking for cuts,
frays, and loose parts. Damaged parts must be replaced
immediately. Do not disassemble or modify the system.
Front seat belt assemblies must be replaced after a collision.
Rear seat belt assemblies must be replaced after a collision if
they have been damaged (i.e., bent retractor, torn webbing,
etc.). If there is any question regarding seat belt or retractor
condition, replace the seat belt. Air Bag Warning Light
The Air Bag warning light will turn on for four to eight
seconds as a bulb check when the ignition switch is first
turned to ON/RUN. If the light is either not on during
starting, stays on, or turns on while driving, have the system
inspected at an authorized dealer as soon as possible. After
the bulb check, this light will illuminate with a single chime
when a fault with the Air Bag System has been detected. It
will stay on until the fault is removed. If the light comes on
intermittently or remains on while driving, have an autho -
rized dealer service the vehicle immediately.
Refer to “Occupant Restraint Systems” in “Safety” for
further information.
Defroster
Check operation by selecting the defrost mode and place the
blower control on high speed. You should be able to feel the
air directed against the windshield. See an authorized dealer
for service if your defroster is inoperable. 4

STARTING AND OPERATING 253
(Continued)When parking on a hill, it is important to turn the front
wheels toward the curb on a downhill grade and away from
the curb on an uphill grade. Apply the parking brake before
placing the gear selector in PARK, otherwise the load on the
transmission locking mechanism may make it difficult to
move the gear selector out of PARK. The parking brake
should always be applied whenever the driver is not in the
vehicle.
WARNING!
• Never use the PARK position as a substitute for the
parking brake. Always apply the parking brake fully
when parked to guard against vehicle movement and
possible injury or damage.
• Never leave children alone in a vehicle, or with access
to an unlocked vehicle. Leaving unattended children in
a vehicle is dangerous for a number of reasons. A child
or others could be seriously or fatally injured.
• Do not leave the key fob in or near the vehicle, or in a
location accessible to children, and do not leave a
vehicle equipped with Keyless Enter-N-Go in the ACC
or ON/RUN mode. A child could operate power
windows, other controls, or move the vehicle. • Be sure the parking brake is fully disengaged before
driving; failure to do so can lead to brake failure and a
collision.
• Always fully apply the parking brake when leaving
your vehicle or it may roll and cause damage or injury.
Also, be certain to leave the transmission in PARK.
Failure to do so may cause the vehicle to roll and cause
damage or injury.
CAUTION!
If the Brake System Warning Light remains on with the
parking brake released, a brake system malfunction is
indicated. Have the brake system serviced by an
authorized dealer immediately. WARNING! (Continued)
5