Turbo Model

Set the vehicle on a lift.
Disconnect the ground cable from battery.
Lift-up the vehicle.
Disconnect the rear vehicle speed sensor connector.

Fig 1: Disconnecting Rear Vehicle Speed Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
Remove the rear vehicle speed sensor.

Fig 2: Identifying Rear Vehicle Speed Sensor
Courtesy of SUBARU OF AMERICA, INC.