Main Switch

Disconnect the ground cable from the battery.
Open the screw cover by using a flat tip screwdriver.
Remove the screw to remove the power window main switch panel.

Fig 1: Identifying Power Window Main Switch Panel
Courtesy of SUBARU OF AMERICA, INC.

NOTE: Remove it from the cutout portion at the tip of the switch panel.

Fig 2: Identifying Cutout Portion
Courtesy of SUBARU OF AMERICA, INC.
Disconnect the connector.
Remove the screw to remove the power window main switch assembly.