Key reminder chime
Subaru Legacy / Subaru Legacy Owners Manual / Instruments and controls / Ignition switch /  Key reminder chime
The reminder chime sounds when the driver’s door opens and the key is in the “LOCK” or “Acc” positions. The chime stops when the ignition switch is turned to the “ON” position or the key is removed from the ignition switch.
See also:
Engine
    ...
   
Keys
   
1) Master key
2) Submaster key
3) Valet key
4) Key number plate
5) Security ID plate
Three types of keys are provided for your vehicle:
Master key, submaster key and valet key. The master key  ...
   
Acc
   In this position the electrical accessories 
(radio, accessory power outlet, etc.) can 
be used. ...
   
					
			