Ram 2500 (Diesel) 2007 Workshop Manual

How The Airbag System Works
•
The airbag control module determines if a frontal
collision is severe enough to require the airbags to
inflate.
•The airbag control module will not detect roll over, or
rear collisions.
•The 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 theOffposition, in
the ACC position or not in the ignition, the airbags are
not on and will not inflate
•The 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.
•If 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.
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•When 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. The driver’s front airbag deflates
through vents towards the instrument panel. The
passenger’s front airbag 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.
•The 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)
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The passenger front airbag is to be turned off only if the
passenger:
•is 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
because the infant has a medical condition which
makes it necessary for the driver to be able to see the
infant,
•is 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,
•has a medical condition which makes passenger airbag
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)
Place the ignition key in the Passenger Airbag On/Off
Switch, push the key in and turn clockwise, and remove
the key from the switch. This will shut off the passenger
side airbag. The “Off” light near the switch will illumi-
nate 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)
Place the ignition key in the Passenger Airbag On/Off
Switch, push the key in and turn counterclockwise, and
remove the key from the switch. This will turn on the
passenger airbag. The “Off” 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:
•The 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.
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•As 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 irrita-
tion, 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.
•It 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.
Window Airbags Supplemental Restraint System
(SRS)—If Equipped
The window airbag control module determines if a side
collision is severe enough to require the side airbags to
inflate. The window airbag control module will not
detect roll over, front or rear collisions.
The airbag control module monitors the readiness of the
electronic parts of the system whenever the ignition
switch is in theSTARTorRUNpositions. These
include all of the items listed above. The airbag control
module also turns on the AIRBAG light in the instrument
panel for 6 to 8 seconds when the ignition is first turned
on as a diagnostic or system check, then turns the light
off. If it detects a malfunction in any part of the system,
it turns on the light either momentarily or continuously.
The side (window) impact SRS Airbags are designed to
activate only in certain side collisions. When the airbag
control module detects a collision requiring the window
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bags to inflate, it signals the inflators on the crash side of
the vehicle. A quantity of nontoxic gas is generated to
inflate the window bag. The inflating window bag
pushes the side pillar molding out of the way and covers
the window. The airbag inflates in about 30 milliseconds
(about one-quarter of the time it takes to blink your eyes)
with enough force to injure you if you are not belted and
seated properly, or if items are positioned in the area
where the window bag inflates. This especially applies to
children. The window bag is only about 3
12inches (8.9
cm) thick when it is inflated.
NOTE: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 DaimlerChrysler/Mopar.
Knee Impact Bolsters
The Knee Impact Bolsters help protect the knees of the
driver and the front passenger, and position everyone for
the best interaction with the front airbag.
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!
•Modifications 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.
•You need proper knee impact protection in a
collision. Do not mount or locate any aftermarket
equipment on or behind the knee bolster.
•It 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:
•The airbag light does not come on or flickers during
the 6 to 8 seconds when the ignition switch is first
turned on.
•The light remains on or flickers after the 6 to 8 second
interval.
•The 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.
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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:
•Diagnostic trouble code(s) and warning lamp status
for electronically-controlled safety systems, including
the airbag system
•Airbag disable lamp status (if equipped)
•Ti m eof airbag deployment (in terms of ignition
cycles and vehicle mileage)
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•Airbag deployment level (if applicable)
•Impact acceleration and angle
•Seatbelt status
•Brake status (service and parking brakes)
•Accelerator status (including vehicle speed)
•Engine control status (including engine speed)
•Transmission gear selection
•Cruise control status
•Traction/stability control status
•Tire pressure monitoring system status (if equipped)
Child Restraint
Everyone in your vehicle needs to be buckled up all the
time — 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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