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Replace Transmitter (Lithium) Battery

WARNING: This page is about a different car, the 2004 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Special caution should be taken for handling each component as they are precision electronic components. 
  1. Using a screwdriver, remove the screw and cover.
    NOTE: Do not pry out the cover forcibly. 

    HINT:

    Push the cover with a finger as shown in Fig 1 , so that there becomes clearance, then pry out the cover from that clearance.

  2. Remove the transmitter.
    Fig 1: Removing Screw & Cover
    G02904471Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Using a screwdriver, remove the 2 screws and cover.
  4. Remove the battery (lithium battery).
    NOTE:
    • Do not push the terminals with a finger. 
    • If prying up the battery (lithium battery) forcibly to remove, the terminals are deformed. 
    Fig 2: Removing 2 Screwdriver Using Screwdriver
    G02904472Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Install a battery (lithium battery) as shown in Fig 3 .
    NOTE: Face the battery upward. Take care not to deform the terminals. 
  6. Check that O-ring is not distorted or slipped off, and install the cover.
  7. Using a screwdriver, tighten the 2 screws.
    NOTE: When the shrews are tightened loosely, it might cause faulty contact of battery (lithium battery) and terminals. 
  8. Assemble the transmitter to the key plate and the cover.
  9. Using a screwdriver, tighten the screw.
    Fig 3: Showing Terminal & Installing Battery
    G02904473Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002