How to Replace the Battery in a 2019 Mazda CX-9 Key Fob
Key fob grant easy access to your auto. Once the key fob battery is discharged you’ll lose your keyless entry fob's ability to control distance opening function. In this post, we are going to tell you how to disassembly your car key fob and change a dead or weak battery yourself. If you decide to do it at home near CX-9, use this guide, but don't forget to check everything you need before you start.
What size battery does 2019 Mazda CX-9 remote key fob take
Prior to open key fob make sure that you have all recommended tools and materials: flat head screwdriver and 1xCR2025 battery.- 1xCR2025 battery
- flat head screwdriver
Simple steps to change the battery in your CX-9's keyless entry remote
Inside of your keyless entry remote installed button cell battery. Remove any internal key first, and then try to pry apart the keyless entry remote.
Gently try to disassemble your key fob with pry tools. Change 1 CR2025 battery with flat head screwdriver.
Get new battery and install it inside fob’s case. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.
Before assembling keyless entry fob's case, verify that everything working fine by pressing buttons on circuit board.
At this point squeeze keyless entry fob's back cover together. Line your body two halves together and assemble it in place by hands from top to bottom. Inspect your keyless entry remote body for gaps. If it is not firmly closed try to repeat last step.
Video of key opening
Mazda CX-9 Smart Key Fob Battery Replacement (2016 - 2019)
Still not working? Buy new one