Toyota 84052-60010 Unlock Warning Switch Assembly

Disconnect the cable from the negative terminal of the battery and remove the steering column covers. Unplug the ignition switch wiring harness connectors by disconnecting the electrical connectors at the bottom of the ignition switch housing. Remove the switch retaining screws to take out the electrical portion of the ignition switch, then pull the switch from the lock cylinder housing, with installation being the reverse of removal. For models equipped with the engine immobilizer system, gently pry off the plastic shroud around the ignition lock cylinder and disconnect the electrical connector, lifting the shroud edge from the locating tab just enough to slip it off, as it houses the amplifier for the special transponder keys. Pry lightly to remove the illumination ring, then take out the unlock arming switch. Insert the key and turn it to the ACC position, then use a small screwdriver or punch to depress the lock cylinder retaining pin and withdraw the key cylinder. To install the lock cylinder, depress the retaining pin and guide it into the housing until the pin extends back into the locating hole, with the remainder of the installation being the reverse of removal.