Keyless Entry Transmitter Battery: Service and Repair

REPLACE TRANSMITTER (LITHIUM) BATTERY




a. Using a screwdriver, remove the cover.

NOTE: Do not pry out the cover forcibly.




b. Remove the battery (lithium battery) as shown in the illustration.

NOTE:
- Do not push the terminals with a finger.
- If prying up the battery (lithium battery) forcibly to remove, the terminals are deformed.

c. Install a battery (lithium battery).

NOTE: Face the battery upward. Take care not to deform the terminals.

d. install the cover.

NOTE: It might cause faulty contact of battery (lithium battery) and terminals.

REPLACE BACK DOOR ECU AND TRANSMITTER

NOTE: When replacing the back door ECU and transmitter, registration of recognition code is necessary because they are provided as a single components.

a. Select the operation mode to perform from the following operation modes.
- Add mode
- Rewrite mode
- Prohibition mode
- Confirmation mode

HINT:
- The add mode is used to retain codes already registered while you register new recognition codes. This mode is used when adding a transmitter. However, if the number of registered codes exceeds 4 codes, previously registered codes are correspondingly erased in order, starting from the first registered code.
- The rewrite mode is used to erase all previously registered codes and register only new recognition codes.
- The prohibition mode is used to erase all registered codes and cancels the wireless door lock function. Use this mode when the transmitter is lost.
- The confirmation mode is for confirming few many recognition codes are already registered before you register additional recognition codes.

Wireless Door Lock Control System (Part 1 Of 3):

Wireless Door Lock Control System (Part 2 Of 3):

Wireless Door Lock Control System (Part 3 Of 3):

b. Follow the chart to register the transmitter recognition code at the back door ECU.

HINT:
- When procedure is out of the specified, the operation returns to normal operation.
- Maximum 4 recognition codes can be registered.