Sonar Sensor

Disconnect the ground cable from battery. Ref. to NOTE>NOTE>BATTERY .
NOTE: For model with battery sensor, disconnect the ground terminal from battery sensor.
Remove the bumper face - rear. Ref. to EXTERIOR/INTERIOR TRIM>Rear Bumper>REMOVAL .
Remove the sonar sensor.
CAUTION: When reusing the sensor, make sure to place a mark on the sensor and the bumper face - rear or others, and surely return each sensor to the original position before removed.
1. Disconnect the connector.
2. Release the claws and then remove the sonar sensor.
  
  Fig 1: Removing Sonar Sensor
  Courtesy of SUBARU OF AMERICA, INC.
  NOTE:
  - The sonar sensors are equipped at four portions on the bumper face - rear.
  - The figure indicates the sonar sensor (right inner). Remove the rest of the sensors in the same manner.
3. Using a flat tip screwdriver wrapped with a protection tape or cloth, release the lock from the front side of the sonar sensor to remove the cord assembly - sonar.
  
  Fig 2: Locating Lock From Front Side Of Sonar Sensor
  Courtesy of SUBARU OF AMERICA, INC.
  
  NOTE: Use a flat tip screwdriver with an appropriate size for the insertion opening.
4. Release the claws, and then remove the bezel - sonar.
Fig 3: Locating Claws And Bezel - Sonar
Courtesy of SUBARU OF AMERICA, INC.