Test new fob battery.
Mazda 3 key fob battery replacement 2010.
Pull out the dead key fob battery from the mazda keyless remote.
Make sure the positive symbol is facing you.
The positive is on top while the negative side of the button cell battery is facing the key fob.
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 the metal ignition key piece back in to the fob until it clicks in to place.
Fold the metal ignition key back down in to the fob and double check that the parts are secure.
Push on ignition key.
Insert the new battery.
Released in 2004 the vehicle is currently in its fourth generation.