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Replacing the Key Fob Battery for the Mazda CX-3

Model: Mazda Cx 3 MK 1 - Years: 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Part: Key

Video tutorial

In today's tutorial, we will see how to disassemble and replace the battery of the key fob for the Mazda CX-3. First, take the key fob in hand and start removing the physical key from inside it by pressing the small button on the back; then pry on the side to remove the battery, as shown in the video.

At this point, install the new battery of the correct type (in this case, a CR 2025 3V); install it in the correct orientation and reassemble the key fob, following the video tutorial to the end!


Updated on 27 June 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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