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How to Replace the Key Battery in a Mazda 6?

Model: Mazda 6 GJ, MK 3 - Years 2012-2024
Part: Key

In this guide for all Mazda 6 owners (2012-2020), discover how to correctly replace the battery inside the smart key. The entire procedure is quite simple and takes only a few minutes to complete. First, press the button on the back cover and slide out the emergency key. Next, open the cover and remove the battery holder inside. Also, remove the battery cover and proceed to replace the battery. Finally, reassemble the various parts correctly, and you are done.

Updated on 22 June 2026 by ScegliAuto

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