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How to Replace the Key Battery on a Toyota Sienta

Model: Toyota Sienta Nph170 - Years 2015-2023
Part: Key

If you notice that you can no longer lock the doors on this vehicle, it is necessary to replace the remote key battery. In the description below and in the video, you will find the necessary information on the steps to take for the replacement. First, unlock and remove the emergency key. Then, use the same key to pry at the joint between the remote and the cover to remove the latter. Inside the remote, you will find the compartment containing the battery; proceed to remove the battery and replace it with the new one. Finally, close the cover and reinsert the emergency key.

Updated on 17 July 2026 by ScegliAuto

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