Cruise control set indicator light
Subaru Legacy / Subaru Legacy Owners Manual / Instruments and controls / Warning and indicator lights / Cruise control set indicator light

The cruise control set indicator light illuminates when the ignition switch is turned to the “ON” position and turns off after approximately 3 seconds.
This light illuminates when vehicle speed has been set.
See also:
Front fog light indicator light (if equipped)
This indicator light illuminates while the front fog lights are illuminated. ...
Bluetooth® audio operation
NOTE
Depending on the connected device, it may not activate as per the following items or not work smoothly. ...
