Caution: Proper operation of the SIR sensing system requires that any repairs to the
vehicle structure return the vehicle structure to the original production configuration.
Not properly repairing the vehicle structure could cause non-deployment in a collision
or deployment for conditions less severe than intended.
| • | If any SIR components are damaged, they must be replaced. If SIR components mounting points are damaged, they must be repaired or replaced. |
| • | Never use SIR parts from another vehicle. This does not include remanufactured parts purchased from an authorized source. |
| • | Do not attempt to service the SDM, the clock spring, or other airbag modules, these items must be replaced if they are defective. |
| • | Verify the part number of the replacement airbag modules. Some inflator modules look identical but contain different internal components. |
Accidents with Deployment - Components Replacement
All SIR components must be replaced after a frontal crash involving airbag deployment. After deployment, a powder residue may be on the surface of the airbag. The powder consists primarily of cornstarch (used to lubricate the bag as it inflates) and by-products
of the chemical reaction. Sodium hydroxide dust (similar to lye soap) is produced as a by-product of the deployment reaction. The sodium hydroxide then quickly reacts with atmospheric moisture and is converted to sodium carbonate and sodium bicarbonate (also
known as baking soda). Therefore, it is unlikely that sodium hydroxide will be present after deployment. Replace the following SIR components.
Caution: Safety precautions must be followed when handling a deployed inflator module
(air bag). After deployment, the inflator module (air bag) surface may contain a small
amount of sodium hydroxide, a by-product of the deployment reaction, that is irritating
to the skin and eyes. Most of the powder on the inflator module (air bag) is harmless.
as a precaution, wear gloves and safety glasses when handling a deployed inflator
module (air bag), and wash your hands with mild soap and water afterwards.
| • | Airbag modules and pretensioners |
Accident Without Deployment - Component Inspection
Certain inspections must be performed after any crash, whether the airbag has deployed or not:
| • | The steering column must be dimensionally inspected. |
| • | Inspect the knee bolsters and mounting points for distortion, bending, cracking, or other damage. |
| • | Inspect the instrument panel (I/P) and steering column reinforcement plate for distortion, bending, cracking, or other damage. |
| • | Inspect the seat belt and mounting points. |
