See also:

Lubrication oil circulation in the refrigerant circuit
Operate the air conditioner compressor at a low engine speed (at idle or low driving speeds) a few minutes each month during the off-season to circulate its oil. ...

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 ...

Examples of the types of accidents in which it is possible that the SRS side airbag and the SRS curtain airbag will deploy (Outback).
1) Hitting a curb, edge of pavement or hard surface 2) Falling into or jumping over a deep hole 3) Landing hard or vehicle falling It is possible that the SRS side and curtain airbags will deploy ...