2010 mazda 3 key fob battery type

This automotive "how-to" guide was specifically written to assist owners of the second generation (2010, 2011, 2012 & 2013) Mazda 3 in replacing the battery in the combination key fob remote control and flip out ignition key.

Owners of other Mazda vehicles such as the Mazda2, Mazda5, Mazda6, MX-5 Miata, Mazdaspeed3, CX-5, CX-7, CX-9, MPV, Tribute, RX-8, Axela, Demio, Verisa, Premacy, and Atenza may also find these DIY instructions to be helpful.

Table of Contents Show

How to Open Your 2010 Mazda 3 Key Fob & Change Battery
What type battery does 2010 Mazda 3 keyless entry remote required
Step by step guide
Frequently Asked Questions
What battery goes in a 2010 Mazda 3 key fob?
What kind of battery does a Mazda 3 key fob take?
What battery does a Mazda key fob use?

A replacement coin cell (A.K.A. "button" or "watch") key fob battery is part number CR1620. It is available from various manufacturers such as Panasonic, Duracell, Energizer, Maxell, Sony, and Renata.

The only tool needed to change the key fob battery is a small flathead screwdriver.

The first step is to press the round silver button and eject the flip out metal ignition key.

Then turn the key fob over so that the empty slot where the ignition key used to reside is facing up towards you.

Insert the blade of the small flathead screwdriver in to the slot and push the small button.

While holding the release button down, pull the ignition key away from the rest of the fob to separate the two pieces.

Push the metal ignition key piece back in to the fob until it clicks in to place.

Fold the metal ignition key back down in to the fob and double check that the parts are secure.

Stand near your Mazda3 and press the "Lock" or "Unlock" buttons to test the new key fob battery. If the battery is working properly, the parking lights should flash.

For more, check out my other 2010-2013 Mazda Mazda3 Repair & Maintenance Guides.

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

Before going to disassembly key fob be sure that you have all recommended tools and materials: 1xCR2025 battery and flat head screwdriver.

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.

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What battery goes in a 2010 Mazda 3 key fob?

You will need a small, flat-head screwdriver, and a CR2025 battery. * Once you have these items, follow these steps to open the Mazda key fob and replace the battery: Insert the screwdriver into the slots located where the manual key was removed. Gently twist, separating the fob's two halves.