How to Open Your 2019 Mazda CX-3 Key Fob & Change Battery
Key fob grant easy access to your Mazda. Once the remote key fob battery is dead or weak you will lose your keyless entry fob's ability to control distance opening function. In this post, you will benefit from knowing how to open Mazda keyless entry remote and change a dead battery yourself. If you gonna solve to do it at home near CX-3, use this guide, but don't forget to check all you need.
What is the battery keyless entry remote requireChanging battery in remote key fob require 1xCR2025 battery and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the size of your fob’s batteries.
- flat head screwdriver
- 1xCR2025 battery
Simple steps to replace the battery in your car's key fob
Inside of your keyless entry remote installed coin cell battery. Remove any internal key before you try to pry apart the key fob.
Gently try to pry apart your remote key fob with flat head screwdriver. Remove 1 CR2025 battery with flat head screwdriver.
Get new battery and install it in fob’s case. Be sure to connect the battery the right way around in a circuit. Your key will not work if you connect battery wrong way.
Before assembling keyless entry fob's case, make sure that all functions works by testing buttons on remote key fob.
The last thing to do is put your cover back on fob. Accurately try to put the two halves in place by hands from top to bottom. If your key shell tightly closed, we done. If not, repeat the last step.
Video of key disassembly
Mazda CX-3 Smart Key Fob Battery Replacement (2016 - 2019)