Section 668 (Headlamp Dimmer Switch Assembly): Replacement

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

REMOVE STEERING COLUMN COVER (See STEERING COLUMN ASSY (TMC MADE) )
REMOVE HEADLAMP DIMMER SWITCH ASSY
1. Disconnect the connector.
2. Using a screwdriver, release the claw and pull out the headlight dimmer switch assy.
  
  Fig 1: Removing Headlamp Dimmer Switch Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: Pressing the claw hard breaks the claw.

HINT:

Tape the screwdriver tip before use.