Test new fob battery.
Mazda 3 key fob battery replacement 2013.
Battery you need https amzn to 31hk0a4 this video will show you how to replace the battery inside the mazda remote control.
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Replacing the cr2025 battery in your mazda key fob is a cinch.
Fold the metal ignition key back down in to the fob and double check that the parts are secure.
All you need is a small flat head or pocket screwdriver a replacement battery from your local.
Push the metal ignition key piece back in to the fob until it clicks in to place.
Stand near your mazda3 and press the lock or unlock buttons to test the new key fob battery.
Bottom part remote p n.