Mazda 6 Sedan Key Fob Battery Remote Replacement DIY Years 2003-2018

Have you ever had your Mazda 6 key fob battery die while you were out and about? The experience is quite frustrating, no doubt. You’re stuck and probably have no alternative. But if that never happened to you, then congrats.

However, you don’t have to wait till your Mazda 6 key fob battery dies before you learn how to replace it. Whether you have the “smart”, “flip”, or “rounded” key fob, you can easily replace your battery at home.

This is your one-stop guide for everything you need to change your Mazda 6 Sedan key fob battery. Keep reading to discover more!

Looking for a different Mazda key fob?

MODEL FOB YEARS BATTERY BUY
6 Sedan Smart Key 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 CR2025 Check on Amazon
6 Sedan Flip 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 CR1620 Check on Amazon
6 Sedan Rounded 2003, 2004, 2005 CR2025 Check on Amazon

How to Replace the Mazda 6 Sedan (2009 -2018) Smart Key Fob Battery

Changing the CR2025 battery in your Mazda 6 Sedan smart key is a simple process with this Mazda 6 Sedan key fob battery replacement guide.

Scroll down to see a full video tutorial or read on for a step-by-step guide.

What you will need:
• 1x CR2025 battery
• Flat-head screwdriver

Step 1

Find the lever on the back of the device and push it to remove the internal (valet) key.

Step 2

Locate the grooves on the left and right walls from where you just removed the key. Insert the head of your flat-head screwdriver into each groove and twist. This will loosen the two halves of the smart key.

Step 3

Now, the seams on the sides of the key fob should be coming apart. Insert your screwdriver into these seams, twist it, and work your way down each side until the device is fully open. Set aside the cover without the battery.

Step 4

You should be holding the cover with the battery now. The next thing is to remove the plastic disc battery protector with your fingers. From here, remove the CR2025 battery with your fingers as well.

Step 5

Get your new Mazda 6 key fob battery and slide it in face up. Put the plastic protector back on top of the battery.

Step 6

Finally, press the two halves of the case together until they snap into place. That’s all there is to it. Your smart key is now good to go.

Nice work! You’ve seamlessly performed a Mazda 6 Sedan key fob battery replacement. Don’t forget to test your device to ensure it will deliver well.

If you would like to watch the video instead, click on my short YouTube tutorial below.

Mazda 6 Sedan Smart Key Fob Battery Replacement (2009 - 2018)

This is the battery for this Mazda 6 Sedan key fob:


Sale
Energizer 2025 Batteries, Lithium CR2025 Battery, 2 Count
  • Energizer 2025 Lithium Coin Battery
  • Delivers long-lasting, dependable performance in specialty devices like heart rate monitors, remotes, keyless entry systems, glucose monitors, toys, and games.Operating temperature:-30C to 60C
  • Holds power for up to 10 years in storage, ensuring you have Lithium Coin Batteries ready when you need them

How to Replace the Mazda 6 Sedan (2006 – 2013) Flip Key Fob Battery

Scroll down to see a full video tutorial or keep reading for a step-by-step Mazda 6 Sedan key fob battery replacement guide.

What you will need:
• 1x CR1620 battery
• Flat-head screwdriver
• Precision screwdriver (3.0mm/PH0 or smaller)
-or-
• Pen, pencil, toothpick, or another thin tool

Buy Small Screwdriver Set on Amazon

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6 PCS Precision Screwdriver Sets, Eyeglass Repair Kit Screwdriver, Mini Screwdriver Set, Flat Head and Philips Head Screwdriver Sets, With 6 Different Sizes, Suitable For Watch, Electronic Repairs
  • 1【6 Different Sizes】Precision screwdriver set, The set includes 2 cross sizes (#0,#1); 4 flat head sizes(1.4 mm, 2.0 mm, 2.4 mm, 3.0 mm); mini screwdriver is your daily electronic repair, watch repair, jewelry repair Perfect choice for any other small screws.
  • 2【Rotating Design】Eyeglass repair kit, The end cover adopts a rotating design, which is flexible to rotate, and the gap is tightly combined,and it is comfortable to use. Rotating end cap improves efficiency and is easy to use.
  • 3【High Quality】Our precision screwdriver set is made of high-quality chrome vanadium steel material, hardened carbon steel shaft, black oxidation treatment, durable and corrosion-resistant. The screwdriver is small and very suitable for small screws.

Step 1

To change the battery, you first need to separate the two halves of your key fob. Start by looking at the left side of the device where the key is housed. Flip out the key.

Step 2

Just inside the key’s compartment, on the top, is a seam between the two halves of plastic. Use your screwdriver to push upwards on the outer piece of plastic. Push until you have created enough separation to fit a flat-head screwdriver into the seam on the bottom of the device (where the two holes for the keyring are). Twist the screwdriver until the whole key fob opens.

Step 3

Inside, you will find a square indentation that contains your CR1620 battery. Take your precision screwdriver (3.0mm/PH0 or smaller) or another small tool and place it into the top-right corner of the compartment (there is a small arrow pointing to this corner). Insert your tool into this corner and pry the battery out with a rocking motion. If you do it right, the battery will easily pop right out.

Step 4

The next step is to replace your old Mazda 6 key fob battery with a new one. To do that, place your new battery face down on top of the indentation and press it down until it clicks into place.

Step 5

Finally, put the two pieces of the key fob back together. Congrats! You just changed the battery in your Mazda 6 Sedan key fob. Not so bad, was it?

Remember to test the new battery to make sure it’s working perfectly.

Mazda 6 Sedan Flip Key Fob Battery Replacement (2006 - 2013)

This is the battery for this Mazda 6 Sedan key fob:

Amazon Basics 2 Pack CR1620 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 2-pack of CR1620 3 volt lithium coin cell replacement batteries for small electronic devices
  • DEVICE COMPATIBLE: Ideal for watches, calculators, games, medical devices, and more
  • DESIGNED TO LAST: Long-lasting, reliable battery life; performs in extreme temperatures

How to Replace the Mazda 6 Sedan 2003, 2004, 2005 Rounded Key Fob Battery

Like the above two procedures, changing the battery in this Mazda 6 Sedan rounded key fob is pretty straightforward too. Scroll down to see a full video tutorial or keep reading for the step-by-step guide.

What you will need:
• 1x CR2025 battery
• Flat-head screwdriver
-or-
• A coin or butter knife

Buy Small Screwdriver Set on Amazon

 Step 1

Start by locating the small slot on the bottom of the key fob (where the keyring attaches) and inserting your flat-head screwdriver, coin, or butter knife into it. Twist the tool until the rounded key fob pops open.

Step 2

Now you have access to the CR2025 battery. Next, simply press—with light pressure—on the top edge of the battery (the side with the red dot above) with your tool. If you push in the right spot, close to the edge of the battery, it will pop out easily.

Step 3

You can now replace your Mazda 6 key fob battery. To insert your new battery, slide it up towards the red dot and then push the bottom into place. It will click into place nicely.

Step 4

Finally, snap the two pieces of your key fob back together.

Great job! You’re all done with your DIY battery replacement and you can go drive your Mazda 6 Sedan. Wasn’t that too easy?

Here is a quick tutorial if you’d prefer to watch the video.

Mazda 6 Sedan Rounded Key Fob Battery Replacement (2003 - 2005)

This is the battery for this Mazda 6 Sedan key fob:


Sale
Energizer 2025 Batteries, Lithium CR2025 Battery, 2 Count
  • Energizer 2025 Lithium Coin Battery
  • Delivers long-lasting, dependable performance in specialty devices like heart rate monitors, remotes, keyless entry systems, glucose monitors, toys, and games.Operating temperature:-30C to 60C
  • Holds power for up to 10 years in storage, ensuring you have Lithium Coin Batteries ready when you need them