Ignition Key Lock: Disassembly

WARNING: This page is about a different car, the 2015 Subaru XV Crosstrek and 2015 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.

Remove the immobilizer antenna assembly or the ignition switch illumination.
1. Disconnect the connector.
2. Release two claws using a flat tip screwdriver or similar tool wrapped with a protection tape, and remove the immobilizer antenna assembly or the ignition switch illumination.
  CAUTION: Do not apply excessive force to disengage the lock of immobilizer antenna assembly or ignition switch illumination. Otherwise they may be broken because those parts are the products made of a plastic.
  
  Fig 1: Identifying Immobilizer Antenna Assembly
  Courtesy of SUBARU OF AMERICA, INC.
Release the claws, and pull the key warning switch downwards to remove.

Fig 2: Identifying Claws And Key Warning Switch
Courtesy of SUBARU OF AMERICA, INC.
Remove the screws and remove the key lock solenoid.

Fig 3: Locating Screws Key Lock Solenoid
Courtesy of SUBARU OF AMERICA, INC.
Replace the key cylinder.
1. Insert the key into the key cylinder, and turn the key to the ACC position.
2. Insert a flat tip screwdriver from the steering lock frame hole (A), and pull the key cylinder until the key cylinder claws touch the steering lock frame stopper (B).
  
  Fig 4: Pulling Out Key Cylinder And Steering Lock Frame Stopper
  Courtesy of SUBARU OF AMERICA, INC.
3. Insert a flat tip screwdriver from the steering lock frame hole (A), and release the claws to pull out the key cylinder.
  
  Fig 5: Pulling Out Key Cylinder
  Courtesy of SUBARU OF AMERICA, INC.
Release the claws and remove the ignition switch assembly.

Fig 6: Identifying Ignition Switch Assembly
Courtesy of SUBARU OF AMERICA, INC.