Security indicator light
Subaru Legacy / Subaru Legacy Owners Manual / Instruments and controls / Warning and indicator lights / Security indicator light

This indicator light shows the status of the alarm system. It also indicates operation of the immobilizer system.
See also:
Fuse panel located in the engine compartment
...
Operation
If the driver and/or front passenger have/ has not yet fastened the seatbelt(s)
when the ignition switch is turned to the “ON” position, the seatbelt warning light(s)
will flash for 6 seconds, to ...
Interior lights
When leaving your vehicle, make sure the lights are turned off to avoid battery discharge. ...
