DODGE RAM 4500 CHASSIS CAB 2008 3.G Workshop Manual

How The Airbag System Works
²
The airbag control module determines if a frontal
collision is severe enough to require the airbags to
inflate.
²The airbag control module will not detect roll over, or
rear collisions.
²The airbag control module also monitors the readiness
of the electronic parts of the system whenever the
ignition switch is in the START or RUN positions.
These include all of the items listed above except the
knee bolsters, the instrument panel, and the steering
wheel and column. If the key is in the9Off9position, in
the ACC position or not in the ignition, the airbags are
not on and will not inflate
²The airbag control module also turns on the AIR BAG
light in the instrument panel for 6 to 8 seconds when
the ignition is first turned on, then turns the light off.
²If it detects a malfunction in any part of the
system, it turns on the light either momen-
tarily or continuously. The instrument clus-
ter will flash the seat belt indicator if it
detects a fault with the airbag indicator.
WARNING!
Ignoring the AIR BAG light in your instrument panel
could mean you won't have the airbags to protect you
in a collision. If the light does not come on, stays on
after you start the vehicle, or if it comes on as you
drive, have the airbag system checked right away.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 51
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²When the airbag control module detects a collision
requiring the airbags, it signals the inflator units. A
large quantity of nontoxic gas is generated to inflate
the airbags. The airbag covers separate and fold out of
the way as the airbags inflate to their full size. The
airbags fully inflate in milliseconds. This is less time
than it takes you to blink your eyes. The airbags then
quickly deflate while helping to restrain the driver and
front passenger (if equipped with passenger side air-
bag). The driver's front airbag deflates through vents
towards the instrument panel. The passenger's front
airbag (if equipped) is deflated through vent holes in
the sides of the airbag. In this way the airbags do not
interfere with your control of the vehicle.
²The knee impact bolsters help protect the knees and
position you for the best interaction with the front
airbag.
Passenger Airbag On/Off Switch ± (Standard Cab
Vehicles Only) (If Equipped)
The passenger front airbag is to be turned off only if the
passenger:
²is an infant (less than 1 year old) who must ride in the
front seat because there is no rear seat, because the rear
seat is too small for a rear-facing infant restraint or
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because the infant has a medical condition which
makes it necessary for the driver to be able to see the
infant,
²is a child, age 1 to 12 who must ride in the front seat
because there is no rear seat, because there is no rear
seat position available, or because the child has a
medical condition which makes it necessary for the
driver to be able to see the child,
²has a medical condition which makes passenger airbag
(if equipped) inflation (deployment) a greater risk for
the passenger than the risk of hitting the dashboard
(instrument panel) or windshield in a crash.
WARNING!
Whenever an airbag is turned off, even a lap/
shoulder belted passenger may hit their head, neck,
or chest on the dashboard (instrument panel) or
windshield in a crash. This may result in serious
injury or death.
To Shut Off the Passenger Airbag (Standard Cab Ve-
hicles Only) (If Equipped)
Place the ignition key in the Passenger Airbag On/Off
Switch (if equipped), push the key in and turn clockwise,
and remove the key from the switch. This will shut off the
passenger airbag (if equipped). The ªOffº light near the
switch will illuminate when the ignition switch is turned
to the ON position.
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To Turn On the Passenger Airbag (Standard Cab Ve-
hicles Only) (If Equipped)
Place the ignition key in the Passenger Airbag On/Off
Switch (If Equipped), push the key in and turn counter-
clockwise, and remove the key from the switch. This will
turn on the passenger airbag (if equipped). The ªOffº
light near the switch will be off when the ignition switch
is turned to the ON position.
If A Deployment Occurs
The airbag system is designed to deploy when the air bag
control module detects a moderate-to-severe frontal col-
lision, and then immediately to deflate.
NOTE:A frontal collision that is not severe enough to
need airbag protection will not activate the system. This
does not mean something is wrong with the airbag
system.If you do have a collision which deploys the airbags, any
or all of the following may occur:
²The nylon airbag material may sometimes cause abra-
sions and/or skin reddening to the driver and front
passenger as the airbags deploy and unfold. The
abrasions are similar to friction rope burns or those
you might get sliding along a carpet or gymnasium
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
immediately.
²As the airbags deflate you may see some smoke-like
particles. The particles are a normal by-product of the
process that generates the nontoxic gas used for airbag
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
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irritation, move to fresh air. If the irritation continues,
see your doctor. If these particles settle on your
clothing, follow the garment manufacturer's instruc-
tions for cleaning.
²It is not advisable to drive your vehicle after the
airbags have deployed. If you are involved in another
collision, the airbags will not be in place to protect you.
WARNING!
Deployed airbags can't protect you in another colli-
sion. Have the airbags replaced by an authorized
dealer as soon as possible.
Enhanced Accident Response System
If the airbags deploy after an impact and the electrical
system remains functional, vehicles equipped with
power door locks will unlock automatically. In addition,
approximately 10 seconds after the vehicle has stopped
moving, the interior lights will light until the ignition
switch is turned off.
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Maintaining Your Airbag Systems
WARNING!
²Modifications to any part of the airbag system
could cause it to fail when you need it. You could be
injured because the airbags are 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 right
side of the instrument panel. Do not modify the
front bumper, vehicle body structure, or frame.
²You need proper knee impact protection in a colli-
sion. Do not mount or locate any aftermarket equip-
ment on or behind the knee bolster.
²It is dangerous to try to repair any part of the airbag
system yourself. Be sure to tell anyone who works
on your vehicle that it has airbags.
NOTE:Perchlorate Material ± special handling may
apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate
Airbag Light
You will want to have the airbags ready to
inflate for your protection in an impact. While
the airbag system is designed to be mainte-
nance free, if any of the following occurs, have
an authorized dealer service the system promptly:
²The airbag light does not come on or flickers during
the 6 to 8 seconds when the ignition switch is first
turned on.
²The light remains on or flickers after the 6 to 8 second
interval.
²The light flickers or comes on and remains on while
driving.
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NOTE:If the speedometer, tachometer or any engine
related gauges are not working, the airbag control mod-
ule may also be disabled. The airbags may not be ready
to inflate for your protection. Promptly check fuse block
for blown fuses. Refer to the label located on the inside of
the fuse block cover for the proper airbag fuses. See your
dealer if the fuse is good.
Event Data Recorder (EDR)
In the event of an accident, your vehicle is designed to
record up to 5-seconds of specific vehicle data parameters
(see the following list) in an event data recorder prior to
the moment of airbag deployment, or near deployment,
and up to a quarter second of high-speed deceleration
data during and/or after airbag deployment. EDR data
are ONLY recorded if an airbag deploys, or nearly
deploys, and are otherwise unavailable.NOTE:
1. A near-deployment event occurs when the airbag
sensor detects severe vehicle deceleration usually indica-
tive of a crash, but not severe enough to warrant airbag
deployment.
2. Under certain circumstances, EDR data may not be
recorded (e.g., loss of battery power).
In conjunction with other data gathered during a com-
plete accident investigation, the electronic data may be
used by DaimlerChrysler Corporation and others to learn
more about the possible causes of crashes and associated
injuries in order to assess and improve vehicle perfor-
mance. In addition to crash investigations initiated by
DaimlerChrysler Corporation, such investigations may
be requested by customers, insurance carriers, govern-
ment officials, and professional crash researchers, such as
those associated with universities, and with hospital and
insurance organizations.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 57
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In the event that an investigation is undertaken by
DaimlerChrysler Corporation (regardless of initiative),
the company or its designated representative will first
obtain permission of the appropriate custodial entity for
the vehicle (usually the vehicle owner or lessee) before
accessing the electronic data stored, unless ordered to
download data by a court with legal jurisdiction (i.e.,
pursuant to a warrant). A copy of the data will be
provided to the custodial entity upon request. General
data that does not identify particular vehicles or crashes
may be released for incorporation in aggregate crash
databases, such as those maintained by the US govern-
ment and various states. Data of a potentially sensitive
nature, such as would identify a particular driver, ve-
hicle, or crash, will be treated confidentially. Confidential
data will not be disclosed by DaimlerChrysler Corpora-
tion to any third party except when:1. Used for research purposes, such as to match data
with a particular crash record in an aggregate database,
provided confidentiality of personal data is thereafter
preserved
2. Used in defense of litigation involving a
DaimlerChrysler Corporation product
3. Requested by police under a legal warrant
4. Otherwise required by law
Data Parameters that May Be Recorded:
²Diagnostic trouble code(s) and warning lamp status
for electronically-controlled safety systems, including
the airbag system
²Airbag disable lamp status (if equipped)
²9Time9of airbag deployment (in terms of ignition
cycles and vehicle mileage)
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²Airbag deployment level (if applicable)
²Impact acceleration and angle
²Seatbelt status
²Brake status (service and parking brakes)
²Accelerator status (including vehicle speed)
²Engine control status (including engine speed)
²Transmission gear selection
²Cruise control status
²Traction/stability control status
²Tire pressure monitoring system status (if equipped)
Child Restraint
Everyone in your vehicle needs to be buckled up all the
time Ð babies and children, too. Every state in the United
States and all Canadian provinces require that small
children ride in proper restraint systems. This is the law,
and you can be prosecuted for ignoring it.
Children 12 years and under should ride properly buck-
led up in a rear seat, if available. According to crash
statistics, children are safer when properly restrained in
the rear seats rather than in the front.
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WARNING!
In a collision, an unrestrained child, even a tiny baby,
can become a missile inside the vehicle. The force
required to hold even an infant on your lap can
become so great that you could not hold the child, no
matter how strong you are. The child and others could
be badly injured. Any child riding in your vehicle
should be in a proper restraint for the child's size.
Infants and Small Children
There are different sizes and types of restraints for
children from newborn size to the child almost large
enough for an adult safety belt. Use the restraint that is
correct for your child:
²Safety experts recommend that children ride
rearward-facing in the vehicle until they are at least
one year old and weigh at least 20 lbs (9 kg). Two typesof child restraints can be used rearward-facing: infant
carriers and9convertible9child seats. Both types of
child restraints are held in the vehicle by the lap/
shoulder belt.
²The infant carrier is only used rearward-facing in the
vehicle. It is recommended for children who weigh up
to about 20 lbs (9 kg).9Convertible9child seats can be
used either rearward-facing or forward-facing in the
vehicle. Convertible child seats often have a higher
weight limit in the rearward-facing direction than
infant carriers do, so they can be used rearward-facing
by children who weigh more than 20 lbs (9 kg) but are
less than one year old.
²Rearward-facing child seats mustNEVERbe used in
the front seat of a vehicle with a front passenger airbag
(if equipped) unless the airbag is turned off. An airbag
deployment could cause severe injury or death to
infants in this position.
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