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Frequently asked questions about cars and motorcycles

How to Change the Key Battery of the Mazda 3

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

If the smart key of your second generation Mazda 3 (2009-2010) has suddenly stopped working due to a dead battery, don't worry. Below, you will find a quick and safe way to replace it. First, get a small flathead screwdriver and disassemble the key fob. Next, locate the button cell battery inside the key and remove it. Insert the new battery and reassemble the key fob correctly. Finally, test the remote's functionality.

Updated on 4 July 2026 by ScegliAuto

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