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How to Replace the Key Battery on a Toyota Sienta

Model: Toyota Sienta Npc80 - Years 2003-2015
Part: Key

If you need to replace the remote key battery on this vehicle, follow the instructions in this description and check the images in the tutorial video. The first step is to extract the emergency key. Use a small screwdriver to pry at the edge of the emergency key slot and detach the remote cover. Behind the cover is the battery compartment, which is covered by a plastic cover that you need to remove. Disconnect the old battery and replace it with a new CR 2032 model. Position it in the compartment, reattach the cover, and finally reconnect the remote cover and reinsert the security key.

Updated on 22 May 2026 by ScegliAuto

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