Ignition Key Lock: Disassembly

WARNING: This page is about a different car, the 2014 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Remove the immobilizer antenna assembly.
CAUTION: Do not apply excessive force to remove the immobilizer antenna and lock. Otherwise they may be broken because those parts are the products made of a plastic.

Fig 1: Removing Immobilizer Antenna Assembly
Courtesy of SUBARU OF AMERICA, INC.
Release the claws, and pull the key warning switch downwards to remove.

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

Fig 3: Locating Key Lock Solenoid Screws
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: Removing 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: Locating Key Lock Solenoid Screw
Courtesy of SUBARU OF AMERICA, INC.