Replacing the battery cr 2025 in the mazda advanced keyless system key fob i am not a big fan of speaking so fewer words more work.
Mazda 3 key fob battery replacement 2016.
Replacing the cr2025 battery in your mazda key fob is a cinch.
This is the battery for this mazda 3 key fob.
Lastly reinsert the auxiliary key.
All you need is a small flat head or pocket screwdriver a replacement battery from your local.
Replace the key fob cover which should snap into place.
2 pack of cr1620 lithium coin cell batteries for small electronic devices.
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.