Replace Transmitter (Lithium) Battery

NOTE: Special caution should be taken for handling each component as they are precision electronic components.

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, so that there becomes clearance, then pry out the cover from that clearance.

Fig 1: Removing Key Fob Cover
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Remove the transmitter.
Using a screwdriver, remove the 2 screws and cover.
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 Screws
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Install a battery (lithium battery) as shown.
NOTE: Face the battery upward. Take care not to deform the terminals.

Fig 3: Installing Transmitter Battery
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Check that O-ring is not distorted or slipped off, and install the cover.
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.
Assemble the transmitter to the key plate and the cover.
Using a screwdriver, tighten the screw.