Section 214 (Wireless Door Lock Control System (W/Smart Key System) - Diagnosis): Inspection: Replacement

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Take extra care when handing these precision electron components.

REMOVE TRANSMITTER BATTERY
1. Using a screwdriver, pry up the outer cover.
  NOTE: Do not forcibly pry up the cover.
  
  Fig 1: Prying Up Outer Cover
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Lightly shake the key to take out the transmitter as shown in the illustration.
  
  Fig 2: Shaking Key To Take Out Transmitter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Remove the battery holder.
4. Remove the battery (lithium battery) from the battery holder.
NOTE:
- Do not push the terminals with your finger.
- Fully insert the holder into the transmitter.
  
  Fig 3: Removing Battery Holder
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL TRANSMITTER BATTERY
1. Install a new battery (lithium battery) with the positive (+) side up.
  NOTE:
  - Be sure that the positive side and the negative side of the transmitter battery are matched up correctly.
  - Be careful not to bend the transmitter battery electrode during insertion.
  - Keep the transmitter case interior free of dust and oil.
2. Install the outer cover.