See also:

Example of the type of accident in which the SRS side airbag will most likely deploy.
A severe side impact near the front seat activates the SRS side airbag and SRS curtain airbag. ...

Maintenance precautions
When maintenance and service are required, it is recommended that all work be done by an authorized SUBARU dealer. If you perform maintenance and service by yourself, you should familiarize yourself ...

Driver’s SRS frontal airbag
The driver’s SRS frontal airbag uses a dual stage inflator. The inflator operates in different ways depending on the severity of impact. Have the system inspected by your SUBARU dealer immediately ...