Need to remove or replace your vehicles air safety bag? We are a team of
certified ASE mechanics that have create this guide for you to help you with the
repair or to see what you are paying for when having your car repaired at a
garage. Though this system does inflate rapidly when activate there is no danger
when working with airbag systems once the car battery is disconnected. Let's jump
How does it work?
An automotive airbag safety system is designed to help keep passengers safe in the event of an
accident by inflating itself when a car strikes an object at speeds above 8 to
14 MPH. It also automatically deflates at temperatures of above 200°F
in case of fire to allow the occupant to exit the vehicle.
An airbag inflation module is located at the center of the steering wheel
which contains the nylon style airbag and inflation capsule. The steering
wheel airbag is contained within a trim cover which is designed with a molded
seam which tears open as the
There are four or more impact sensors around the vehicle which send a
signal to the main SRS (safety restraint system) computer in case of an accident. An electrical signal is
then sent to discharge rapidly expanding gases through an orifice located at the
rear of the airbag which immediately fills to instantly cushion the impact of
the head and torso to prevent injury.
The frontal passenger side airbag operates in much of the same manner as the drivers
side with the exception of a weight sensor located in the passenger seat which
detects the presents of a person or infant sitting in the seat. The technology
behind this infant or toddler detection has been advanced throughout the
automotive industry with the use of weight sensors informing the system if someone is sitting in the
seat weighing 75 pounds or less which automatically disables the passenger side
Even with the technological advancements passengers should set back away from the airbag and not lean forward when they drive or
ride to avoid any adverse effects of the airbag deployment in the event of an accident.
Some cars and trucks are equipped with a manual control switch that will disable
the system for small children and infant seats.
Side door air impact bags were introduced to aid further safety measures which is
located inside the seat, door panel or side molding. Some side airbags can be
located in along the roofline, back seat or the inboard edge of the door sill. The initial airbag system was enhanced
and replaced with the supplemental restraint system or SRS which was introduced
in the S-Class Mercedes-Benz in 1980, Porsche was the first to introduce the
passenger side airbag.
What Goes Wrong?
If an airbag warning light is on while driving the airbag safety system has
been disabled and will not activate in the event of an accident which is
dangerous. Your vehicle goes through a diagnostic check when the ignition key is
turned on to ensure the system is operational.
If the computer detects a problem it will shut down the system while illuminating
the airbag warning light. This warning light will illuminate when:
The fuse is blown
One of the air bag connectors is still disconnected after a repair
The airbag safety module has detected a problem
An airbag has deployed
A sensor wring is damaged
Short in the wiring harness
Why Does The Airbag Need to Be Removed?
There are primarily two reasons an airbag needs to be removed or replaced.
The first and most obvious is that the car has been in an accident and the
airbag has deployed in which case replacement is required because they cannot be
reused. The next is a repair that requires the removal of an airbag that needs
to be done such as a turn signal switch which is located behind the steering
wheel. Other repairs include the removal of a side air bag such as a window
regulator replacement job. As you can see by the image below the side airbag
stands in the way of the window regulator.
Before You Begin Removing the Airbag
Begin with the vehicle on level ground with the transmission in park, set the emergency brake.
Performing a removal and replacement is not too difficult and can be
done using everyday tools. This job will take about an hour.
battery's negative cable to disable the system for about 5 minuets
before work begins and leave it disconnected until the repair job is
completed. This will help prevent electrical short circuits and
accidentally deploying the unit while the job is being done. Though appearances may vary the process is similar for
We will give you a list of tools and supplies including specific parts and
manuals at the end of this guide.
Step 1: Remove the Airbag Mounting Bolts
While the battery is disconnected turn the ignition
switch to the on position. This will unlock the wheel and allow you to move it in
either direction and help you access the mounting bolts or release clips (On
Gm vehicles) which are located on the backside of the steering wheel cover.
Now grasp the steering wheel and turn it 90°
locating the first mounting bolt or clip upward.
Look behind the steering wheel to find the access holes where the
bolts are located. Some manufacturer's have slots which give access to a
retainer clip or ring which requires a screwdriver to release.
After locating the access hole loosen the mounting bolts or clips which
will release one side of the airbag. For some applications the bolts will be
retained in the wheel and will not come out which is normal.
Once one side has been removed or released turn the steering wheel in the
opposite direction 180°. Then locate and loosen or remove the opposing mounting bolt
or retainer clip.
Gently grasp the assembly while pulling it away from the steering wheel. Be
careful to not pull it out quickly because the wiring harness connector for the
horn and deployment controls will still be attached to the backside
which you don't want to damage.
Step 2: Disconnect Wiring Connectors
On the backside of the airbag will be the wiring connectors. These connectors are
for the first and second stage deployment and are color coded one green and one
yellow, the horn connector is black.
Using a small pick or screwdriver carefully release the horn pad connector
and pull it away from the airbag. This safety clip is made of plastic so be
gently as not to break it.
Wiring connectors can have one or more safety clips or
operations to remove the connector. This connector has two separate devices one
orange and one grey on each connector.
Use a small pick or screwdriver to release the primary safety
clip by pushing it downward. Each manufacturer has a different method of release so push in all directions until it unlocks.
Once the primary safety clip has been released gently pull up on the
secondary clip. This will help you remove the clip from the connector.
After the clip has been released grasp it and remove it from the connector.
Now the connector is ready to be removed. While pulling up slightly use a small
pick to release the tang (barb) on each side of the connector while gently
pulling upward. You may need to gently rock the connector back and fourth a
little to aid in its
The connector will now be removed, inspect it for damage or corrosion.
Step 3: Removing the Airbag
After removing the electrical connectors inspect the control switches and horn pad
for damage. If replacing the unit because of deployment inspect and match the
electrical connectors, they should be identical. Once repairs are completed such as
removing the steering wheel to replace the turn signal switch, cruise control or
ignition switch simply reinstall the airbag by reversing
these steps. Most electrical connectors produce an audible click to confirm
their proper installation.
After the repair is complete turn the ignition key to the on position and
start the engine to straighten the steering wheel, the airbag warning
light should be off. If when the repair is complete and the light is on disassemble to check
In the following video we will show you how to remove an airbag and disconnect
the electrical connectors which can be tricky if you don't know how. Please
watch the video below and follow information in this
guide for tips and information.
If you need more information please visit our forum
where thousands of
airbag questions have been previously answered by our online mechanics.
There are various tools and supplies you will need throughout this guide. We
have created a list for you which are easily obtained if you do not have them
Tools and supplies needed for an airbag replacement
You will also need replacement parts. We have created a guide that will inform you as to where to go
to get the best deal and quality.
Learn more: Airbag purchasing guide
To see more specific information about your particular vehicle check out our
repair manual information guide.
Airbag repair manuals
If you need more information about what you have just read please
ask one of our mechanics,
we are happy to help.