How to Open Your 2012 Mazda 3 Key Fob and Change Battery
Keyless entry remote grant easy access to your car. Once the key fob battery is dead or weak you not to be able close trunk or doors from distance. In this post, we explained how to disassembly Mazda keyless entry remote and replace a dead battery yourself. If you decide to do it at home near 3, use this guide, but don't forget to check everything you need before you start.
What size battery does 2012 Mazda 3 keyless entry remote requiredBefore starting disassembly remote key fob make sure that you have all required tools and materials: CR2032 battery and flat head screwdriver.
- flat head screwdriver
- 1xCR2032 battery
Simple steps to replace the battery in your car's key fob
Inside of your key fob installed small coin cell battery. Move the key out of the way if it is in the key fob.
Carefully try to disassemble your key fob with pry tools. Change 1 CR2032 battery with flat head screwdriver.
Get new battery and install it in fob’s shell. Be sure to connect the battery the right way around in a circuit. Your remote key fob will not work if you place battery wrong way.
Before assembling keyless entry fob's case, check that all functions works by testing buttons on circuit board.
At this point squeeze fob’s back cover together. Line your case two halves together and put it in place by hands from top to bottom. If your fob body tightly closed, we done. If not, repeat the last step.
Video of key disassembly
Replace Mazda Remote Battery
Still not working? Buy new one