See also:

Other bulbs
Other bulbs may be difficult to replace. We recommend that you have the bulbs replaced by your SUBARU dealer if necessary. ...

Key lock-in prevention function
This function prevents the doors from being locked with the key still in the ignition switch. ...

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 ...