Replace the key fob cover which should snap into place.
2012 mazda 3 key fob battery replacement.
Fold the metal ignition key back down in to the fob and double check that the parts are secure.
Remove the key fob battery cover from your mazda remote.
Battery you need https amzn to 31hk0a4 this video will show you how to replace the battery inside the mazda remote control.
Push on ignition key.
What to do if you lose your car keys again though you can try figuring out how to replace the mazda key fob battery yourself we always recommend working with a qualified mazda technician to avoid damaging the key.
Modify 2012 mazda 3 remote to use a bigger battery replacing cr 1620 with cr 1632.
Lastly reinsert the auxiliary key.
Push the metal ignition key piece back in to the fob until it clicks in to place.
Make sure the positive symbol is facing you.
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The positive is on top while the negative side of the button cell battery is facing the key fob.
Insert the new battery.
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.
Released in 2004 the vehicle is currently in its fourth generation.
Test new fob battery.
Bottom part remote p n.
Stand near your mazda3 and press the lock or unlock buttons to test the new key fob battery.