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How to Replace the Key Battery of a Toyota Sienta

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

In this new mini guide for all Toyota Sienta Mk2 owners, you will find all the steps required to correctly replace the battery in your car's key. First, remove the emergency key located inside the cover by simply pulling it out while pressing the small button on the upper back of the cover. Next, open the cover with a flathead screwdriver and proceed to replace the dead battery with a new one.

Updated on 6 June 2026 by ScegliAuto

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