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How to Change the Battery in a Toyota C-HR Key

Model: Toyota C Hr Ax10, MK 1, Ax50 - Years: 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Part: Key

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Video tutorial

To change the battery in a Toyota C-HR key, start by extracting the emergency mechanical key. To do this, press the release button located on the side of the key and pull the mechanical key out of the fob. Once extracted, use a small flat screwdriver or a plastic tool to pry in the gap created by the absence of the mechanical key and gently open the key shell.

Once the two sides of the shell are separated, locate the battery, usually a CR2032 button cell.

Carefully remove it, noting its orientation. Insert the new battery in the same orientation, ensuring the positive (+) side is facing up. Reassemble the key shell by pressing the two sides together until they click securely.

Finally, reinsert the emergency mechanical key. Your key should now work correctly with the new battery.


Updated on 5 October 2026 by ScegliAuto


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by ScegliAuto

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