The positive is on top while the negative side of the button cell battery is facing the key fob.
Mazda 2 key battery type.
Keylessoption 2032 battery long lasting 3v lithium for keyless entry remote smart key fob alarm head flip keys cr2032 2 count 4 6 out of 5 stars469 5 85 5 85 get it as soon as wed sep 16.
Press the two key fob cases together until you hear the shells click and lock in place.
Press the battery cover in place.
Insert the o ring in its channel if it came off during the earler step when you removed the battery from the mazda remote.
Test the key to ensure that the remote is working properly.
This video shows a how to guide in replacing the remote battery within the key fob and how to tweak the connections the battery needed is a cr1620 link to ba.
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Press the metal emergency key into the mazda key.