Subaru 2005 Legacy Owner's Manual page 57

Seat, seatbelt and SRS airbags
" Unfastening the seatbelt
Push the button on the buckle.
Before closing the door, make sure that the belts are
retracted properly to avoid catching the belt webbing
in the door.
1-26
! Rear center seatbelt on Station wagon model
A) Center seatbelt tongue plate
B) Connector (tongue)
C) Connector (buckle)
D) Center seatbelt buckle