Section 247 (Wireless Door Lock Control System (W/O 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.

REMOVE TRANSMITTER SUB-ASSY MODULE SET DOOR CONTROL
NOTE: Take extra care when handing these precision electronic components.

HINT:

The installation procedure is the removal procedure reverse order.

Fig 1: Removing Transmitter Sub-Assy Module Set Door Control
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Using a screwdriver, remove the screw.
2. Push the cover with your finger as shown in the illustration so a gap appears, then, pry out the cover using that gap.
NOTE: Do not forcibly pry up the cover.
REMOVE TRANSMITTER BATTERY
1. Using a screwdriver, remove the 2 screws and cover.
2. Remove the transmitter battery (lithium battery).
Fig 2: Removing Transmitter Battery
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE:
- Do not push the terminals with your finger.
- Do not forcibly pry up the battery (lithium battery). The terminals may become damaged.
- Do not touch the battery with wet hands. Water may cause rust.
- Do not touch or move any components inside to transmitter, as it may cease to work.
INSTALL TRANSMITTER BATTERY
1. Install a new battery (lithium battery) with the positive (+) side up, as shown in the illustration.
  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. Check that O-ring is not distorted or slipped off, and install the cover.
3. Using a screwdriver, tighten the 2 screws.
Fig 3: Installing Transmitter Battery
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: If the screws are loose, it may cause faulty contact between the battery (lithium battery) and the terminals.