See also:

Cooling system
Never attempt to remove the radiator cap until the engine has been shut off and has cooled down completely. Since the coolant is under pressure, you may suffer serious burns from a spray ...

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

Examples of the types of accidents in which the SRS curtain airbag will most likely deploy.
1) A severe side impact near the front seat or the rear seat activates the SRS curtain airbag. 2) The vehicle rolls onto its side or the roof. 3) If the angle of vehicle tip-up is marginal o ...