Sedan Model

WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. < Ref. to BATTERY , NOTE, Repair Contents. >
Remove the trim panel assembly - rear shelf. < Ref. to REMOVAL , Rear Shelf Trim. >
Remove the woofer assembly.
1. Disconnect the connector.
2. Remove the bolts, then remove the woofer assembly.
  
  Fig 1: Locating Woofer Assembly Connector And Screws - Sedan Model
  Courtesy of SUBARU OF AMERICA, INC.