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How to Replace the Key Battery for the Mazda CX-9

Model: Mazda Cx 9 TC - Years 2016-2024
Part: Key

In this new mini guide dedicated to your Mazda CX-9, discover how to properly change the battery in the smart key. To complete the entire operation correctly, you only need a small flathead screwdriver. First, remove the back cover, then use the screwdriver to detach the metal part located at the bottom of the cover. At this point, also remove the front cover and take out the battery cover. Finally, remove the dead battery and proceed with the actual replacement.

Updated on 7 June 2026 by ScegliAuto

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