Insert the new battery.
2012 mazda 3 key fob battery.
Place the back mazda key fob case aside.
Mazda 3 key fob battery remote replacement diy years 2004 2018 the mazda 3 also known as the mazda axela is a fun to drive reliable and safe compact car.
Stand near your mazda3 and press the lock or unlock buttons to test the new key fob battery.
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The positive is on top while the negative side of the button cell battery is facing the key fob.
Modify 2012 mazda 3 remote to use a bigger battery replacing cr 1620 with cr 1632.
Fold the metal ignition key back down in to the fob and double check that the parts are secure.
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Released in 2004 the vehicle is currently in its fourth generation.
Pull out the dead key fob battery from the mazda keyless remote.
Push the metal ignition key piece back in to the fob until it clicks in to place.
Test new fob battery.
Energizer cr2025 battery 3v lithium coin cell 2025 batteries 2 battery count packaging may vary.
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Remove the key fob battery cover from your mazda remote.
Push on ignition key.