The positive is on top while the negative side of the button cell battery is facing the key fob.
Mazda 3 key fob battery replacement 2010.
Place the back mazda key fob case aside.
Test new fob battery.
Stand near your mazda3 and press the lock or unlock buttons to test the new key fob battery.
Make sure the positive symbol is facing you.
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.
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.
Push on ignition key.
Pull out the dead key fob battery from the mazda keyless remote.