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. ...

Key number
1) Key number plate 2) Security ID plate The key number is stamped on the key number plate attached to the key set. Write down the key number and keep it in another safe place, not in the vehicle ...