Subaru 2004 Baja Owner's Manual page 93

Keys and doors
Front passenger's switch
1) Lock
2) Unlock
All doors can be locked and unlocked by the power
door locking switches located at the driver's side and
the front passenger's side doors.
To lock the doors, push the switch forward.
To unlock the doors, push the switch rearward.
When you close the doors after you set the door locks,
the doors remain locked.
NOTE
Make sure that you do not leave the key inside the
2-6
vehicle before locking the doors from the outside
using power door locking switches.