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How to Replace the Key Fob Battery of the Mazda 3

Model: Mazda 3 MK 2, BL - Years 2009-2013
Part: Key

First, push the tab on the back to unlock the extraction of the metal key inside the remote. Use a screwdriver to lever on the two recessed edges to initially separate the two parts of the key. Now, use a card to continue separating them until you can completely remove the rear panel. You can now remove the battery cover and replace it with a new one. Finally, retrace your steps to reassemble the various pieces.

Updated on 24 February 2026 by ScegliAuto

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