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How to Replace the Key Battery on a Toyota Vios Mk3

Model: Toyota Toyota Various
Part: Key

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If the smart key for your Toyota Vios Mk3 has suddenly stopped working, you will need to replace the battery inside it. Below are all the necessary instructions to complete the entire operation in just a few seconds and without any difficulty. First, get a small flat screwdriver and use it to open the cover.

Next, remove the battery holder and open it as well. Finally, replace the old button battery with a new one (model CR1620) and correctly reassemble the key.


Updated on 6 June 2026 by ScegliAuto


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by ScegliAuto

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