Subaru Impreza 2.2L MT Owner's Manual page 57

J To open the trunk lid from inside (vehicle with trunk lid release
lever)
Pull the trunk lid release lever upward.
B To cancel the trunk lid release
The inside trunk lid release can be cancelled to help prevent unautho-
rized entry into the trunk. To cancel the trunk lid release, set the lid
release cancel lever (located on the inside of the trunk lid, mounted to
the trunk lid latch) to the "CANCEL" position. When this lock is in the
"CANCEL" position, the trunk can be opened only by the master key.
1-26
HG0003
OM-H0018