Replacing battery with smart key system

The transmitter can easily be damaged when replacing the battery. We recommend having the battery replaced by your Toyota dealer. If you have to do it yourself, use a CR1632 lithium battery or equivalent and a flathead screwdriver.

Special care should be taken to prevent small children from swallowing the removed transmitter battery or components.


♦ Be careful not to touch the circuit, as this may generate static electricity that can damage the transmitter.

♦ When replacing the transmitter battery, be careful not to lose the components.

♦ Replace only with the same or equivalent type recommended by a Toyota dealer.

♦ Dispose of used batteries according to the local laws.

Replace the transmitter battery by following these procedures:

1. Push the release button and take out the mechanical key.

2. Using a flathead screwdriver or equivalent, open the transmitter case.

3. Remove the discharged transmitter battery by flathead screwdriver or equivalent. Insert the guide groove and lift as shown in the above illustration.

4. Put in a new battery with the positive (+) side up. Install the cover and insert the mechanical key into the transmitter.

Close the transmitter case securely.


Do not modify the battery case. It may cause a transmitter malfunction.


♦ Make sure the positive side and negative side of the battery are faced correctly.

♦ Do not replace the battery with wet hands. Water may cause unexpected rust.

♦ Do not touch or move any components inside the transmitter, or it may interfere with proper operation.

♦ Be careful not to bend the electrode when inserting the transmitter battery and that dust or oils do not adhere to the case.

♦ Close the transmitter case securely.

After replacing the battery, check that the transmitter operates properly. If the transmitter still does not operate properly, contact your Toyota dealer.

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