See also:

Operation
The SRS side airbag and SRS curtain airbag can function only when the ignition switch is in the “ON” position. The driver’s and front passenger’s SRS side airbags and SRS curtain airbags deploy ...

To enter the passive mode
If you wish to program the passive arming mode, have it done by your SUBARU dealer. ...

For U.S.A
The following information has been compiled according to Code of Federal Regulations “Title 49, Part 575”. ...