Procedures

SRS Component Replacement Policy


The following information details the policy for replacement of SRS components; either as a result of a vehicle accident or as a result of vehicle age.


WARNING: All components of the SRS must be replaced every 15 years.


Impacts which do not deploy the airbags or pre-tensioners


Check for structural damage in the area of the impact paying particular attention to bumper armatures longitudinals and bracketry.

Impacts which deploy the airbags or pre-tensioners

The replacement and inspection policy is dependent on the type and severity of the crash condition. The following guidelines are the minimum that should be exercised as a result of the deployment of specific SRS components.

Check for structural damage in the area of the impact paying particular attention to bumper armatures, longitudinals and bracketry.


CAUTION:
The SRS DCU must be replaced after every deployment has occurred.
The SRS side impact sensor must be replaced after every side deployment has occurred. Only replace the side impact sensor on the deployed side.


Front airbag deployment (driver and passenger)
If the front airbags are deployed the following components must be replaced:
- Driver airbag module
- Passenger airbag module
- Fly leads (where applicable) connecting front airbag modules to SRS harness
- Front seat belt buckle pre-tensioners
- Rear seat belt pre-tensioners - if fitted
- Driver's seat belt retractor - if fitted
- Rotary coupler
SRS DCU

In addition, the following should be inspected for damage and replaced as necessary:
- Front passengers seat belt retractor - webbing tongue latching 'D' loop, body anchorage point
- Rear seat belt buckles - webbing buckle covers, body anchorage and tongue latching function
- Fascia moulding adjacent to passenger airbag module
- Steering wheel
- Front seat frames and head restraints
- Steering column -if adjustment is lost or if there are signs of collapse
- Seat belt height adjusters
- Rear seat belts


Side (Thorax airbags)
If the side (thorax) airbags are deployed the following components must be replaced on the side of the vehicle on which the deployment occurred:

In addition the following should be inspected for damage and replaced as necessary:

- Front seat belts - retractors, webbing, tongue latching, 'D' loop, body anchorage points
- Rear seat buckles - webbing, buckle covers tongue latching body anchorage points
- Front seat frame and head restraints
- Door trim casing
- Seat belt height adjusters
- Rear seat belts
- SRS DCU


Head airbag modules
If the head airbag modules are deployed, the following components must be replaced on the side of the vehicle on which deployment occurred:
- Head airbag modules
- Link lead between airbag gas generator and SRS harness
- Airbag retaining clips
- Internal trim finisher
- Front seat belt buckle pre-tensioners
- SRS DCU
- Both side impact crash sensors

In addition the following should be inspected for damage and replaced as necessary:
- Headlining
- Mounting brackets
- Front seat belts - retractors, webbing tongue latching 'D' loop and body anchorage points
- Rear seat belt buckles - webbing, buckle covers, tongue latching and body anchorage points
- Adjacent trim components
- Seat belt height adjusters

Rear impacts
Rear impacts may cause the seat belt pre-tensioners to deploy. If this occurs all pre-tensioner units must be replaced. In addition the following components should be inspected for damage and replaced as necessary:
- Front seat frames and head restraints
- Seat belt height adjusters
- Front seat belts retractors webbing tongue latching, 'D' loop and body anchorage points
- Rear seat belt buckles webbing buckle covers tongue latching and body anchorage points
- SRS DCU
- SRS side impact sensor.


Periodic replacement of SRS components
The performance of the propellants within airbags and pre-tensioners will deteriorate over a period of time.

As a result, it is essential that airbags, seat belt pre-tensioners and the rotary coupler are replaced every 15 years.