Rear Washer: Removal

Disconnect the ground cable from battery.
Remove the rear gate upper trim.
1. Remove the claws on the trim edge.
2. Disconnect the claws in the center of trim, and remove the rear gate upper trim.
  
  Fig 1: Removing Claws On Trim Edge
  Courtesy of SUBARU OF AMERICA, INC.
Remove the high-mounted stop light.
1. Remove the nut.
  
  Fig 2: Locating High-Mounted Stop Light Mounting Nuts
  Courtesy of SUBARU OF AMERICA, INC.
2. Disconnect the connector and remove the high-mounted stop light.
  
  Fig 3: Disconnecting High-Mounted Stop Light Connector
  Courtesy of SUBARU OF AMERICA, INC.
Remove the rear washer nozzle.
CAUTION: Before removing, apply protective tape to the body panel and used tools not to damage the rear gate panel.
1. Push the claw using a flat tip screwdriver, etc.
2. When the washer nozzle lifts up, pull out the nozzle using a clip remover, etc.
3. Disconnect the washer hose and remove the washer nozzle.
  
  Fig 4: Pushing Claw Using Flat Tip Screwdriver
  Courtesy of SUBARU OF AMERICA, INC.