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How to replace the key battery in the Mazda CX-5.

Model: Mazda CX-5 MK 2 - Years 2017-2024
Part: Key

On the Mazda CX-5, replacing the remote control battery is quick and does not require coding. With the Mazda CX-5 parked, place the remote on a flat surface. Remove the mechanical key by pressing the unlock button on the edge and pulling out the metal blade. Open the shell by inserting the key blade (or a small screwdriver wrapped in a cloth) into the side slot and gently prying along the perimeter until the two halves separate. Lift the cover of the battery compartment, remove the used battery, and insert the new one with the “+” pole facing as indicated. Close it by aligning the shells and pressing until the clips snap into place; reinsert the mechanical key. Test the buttons (open/close) near the Mazda CX-5 to check if it works. Avoid touching the contacts with your fingers, do not force the clips, and dispose of the used battery at a collection center. If the remote does not respond, double-check the polarity, clean the spring contacts, and try another battery of the correct type.

Posted on 18 December 2025 by ScegliAuto

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