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Replace Transmitter (Lithium) Battery

WARNING: This page is about a different car, the 2003 Lexus GS 430 and 2003 Lexus GS 300. 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 the illustration, so that there becomes clearance, then pry out the cover from that clearance.

  2. Remove the transmitter.
    Fig 1: Replacing Transmitter (Lithium) Battery
    G03632727Courtesy 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 Transmitter Cover
    G03632728Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Install a battery (lithium battery) as shown in the illustration.
    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: Installing Battery
G03632729Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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