2010 mazda 3 key fob battery replacement

How to Open Your 2010 Mazda 3 Key Fob & Change Battery

If your auto key is not working correct, the cell battery more likely must to be changed. In this article, we walks you through how to open your remote key fob and replace your Mazda key battery step by step.

What type battery does 2010 Mazda 3 keyless entry remote required

• 1xCR2025 battery
• flat head screwdriver

Step by step guide

Inside of your key fob installed button battery. Move the key out of the way if it is in the key fob.

Delicately try to open your remote key fob with flat head screwdriver. Replace 1 CR2025 battery with flat head screwdriver.

Replace old battery with fresh one CR2025. Every battery has a negative and positive side and if you put the wrong connector down, the current cannot go into your circuit board and make it work. Check position on battery, by "+" mark.

When the new battery installed, check remote key fob functionality by pressing buttons. If all functions works, assemble your fob’s case in reverse order.

The last thing to do is put your cover back on fob. Accurately try to put the pieces in place by hands from top to bottom. If your key fob body firmly closed, we done. If not, repeat the last step.

How To Change A Mazda 3 Key Fob Battery-Flip Key (2010-2013)

Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Mazda 3 require 1xCR2025 batteries. Most CR2025 batteries are under $6 depending on the type, size packaging and brand you buy. You can take old battery to the store, to be sure.

Remote key fob in most of cases reprogramming not required after battery replace. If your remote key fob not working, recheck new battery voltage. If it is not help, read user's manual or contact local dealer.

Yes, you can change battery in your 2010 Mazda 3 key fob yourself. Most difficult part is to disassembly keyless entry fob's case. It's pretty simple with our step by step guide.

Car service price for change the battery in key fob is $50-600 depending on the brand.

Key fob batteries in Mazda 3 should be changed every four years, but this will differ based on their amount of use and build quality. If your key fob shortened signal strength, you should replace batteries before it stop open doors and make trouble for you.

If your car signal strength reduced, key fob buttons not working, need multiple clicks to unlock or lock doors or has low key battery indicator on dashboard, it's probably battery replace in remote key fob needed. Currently installed battery is discharged with a high probability, but if it's not help, key change or repair needed.

Getting inside the remote flip key for certain Mazda models to replace the battery can be tricky. Here’s how it’s done.

The battery used in the Mazda remote shown in photos below utilizes the CR1620 lithium battery.

Note: The CR2025 type lithium battery is used in the newer and different looking key fobs.

1. Press the button to release the key, then locate the slot inside where the key is housed.
   
   
2. Use a small flat-head screwdriver to press into the slot. The key remote should separate into two pieces.
   
   
   
   
   
3. Place the half that contains the metal key to the side. Use a small flat-head screwdriver to pry apart the remote half of the key at the location shown below.
   
   
   
   
   
4. Now you can pry the battery out of the battery compartment and replace it.
   
   

Once the battery is replaced, reverse these steps to put the key fob back together, and you’re set.

This tutorial is for remote keys included with the following models:

• 2008-2013 Mazda 3, 5, 6,and 7
• 2009-2013 Mazda CX-7, CX-9, and RX-8