Access Key Battery

WARNING: This page is about a different car, the 2014 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: To prevent static electricity damage to the access key printed circuit board, touch the steel area of building with hand to discharge static electricity carried on body or clothes before disassembling the access key.

Push the lock button and remove the mechanical key from the access key.
Insert the mechanical key into the slit of the access key to open the case.

Fig 1: Removing Mechanical Key From Access Key
Courtesy of SUBARU OF AMERICA, INC.
Insert a flat tip screwdriver to remove the battery (A) from the case.

Fig 2: Removing Battery From Case Using Flat Tip Screwdriver
Courtesy of SUBARU OF AMERICA, INC.