Ignition Key Release Button Removal/Installation

Disconnect the negative battery cable.
Remove the ignition switch lock cylinder; See IGNITION LOCK CYLINDER REMOVAL/INSTALLATION .
If equipped, remove the tilt wheel handle.

Fig 1: Removing Tilt Wheel Handle
Courtesy of MAZDA MOTORS CORP.
Remove the upper and lower steering column shrouds.
1. Remove screws.
2. Remove shrouds.
  
  Fig 2: Removing Upper And Lower Steering Column Shrouds
  Courtesy of MAZDA MOTORS CORP.
Remove the key release lever bolt (1), lever (2) and spring (3).

Fig 3: Removing Key Release Lever Bolt, Lever And Spring - With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Install in reverse order of removal.