Remove the key fob battery cover from your mazda remote.
2010 mazda 3 key fob battery size.
Place the back mazda key fob case aside.
The most common mazda key batteries are 3v coin batteries like the.
Energizer cr2025 battery 3v lithium coin cell 2025 batteries 2 battery count packaging may vary.
Insert the new battery.
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Changing the battery in a current mazda 3 s key fob is a simple job once you know the process.
If the battery is working properly the parking lights should flash.
No matter what key fob you have you will be able to change it on your own quickly and easily.
The battery for your key depends on the type of key fob.
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The positive is on top while the negative side of the button cell battery is facing the key fob.
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Start by locating the small button on the back of the key near the silver metal key ring lug and depressing it.
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Pull out the dead key fob battery from the mazda keyless remote.
Scroll up to the chart to see which one you have.
Energizer cr2025 battery 3v lithium coin cell 2025 batteries 2 battery count packaging may vary.
We will show you how to change the battery of every key version since 2004.
Make sure the positive symbol is facing you.
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You can then tug the metal key ring lug out and pull the manual accessory key out of the key fob.
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Fold the metal ignition key back down in to the fob and double check that the parts are secure.
For more check out my other 2010 2013 mazda mazda3 repair maintenance guides.
This is a total guide for mazda 3 key fob battery replacement.