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

The Mazda 6, or Mazda6, was released in 2003. Mazda marketed this model as the first example of the company’s new and unique design philosophy. This first-generation really set the stage for the modern era of Mazda vehicles and marked an important stage in the company’s development.

The sedan version of the Mazda 6 has used 3 different key fobs over the years. 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. Looking for a different Mazda key fob?

MODELFOBYEARSBATTERYBUY
6 SedanSmart Key2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018CR2025Check on Amazon
6 SedanFlip2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013CR1620Check on Amazon
6 SedanRounded2003, 2004, 2005CR2025Check on Amazon

How to replace the Mazda 6 Sedan 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 smart key fob battery

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

Changing the CR2025 battery in your Mazda 6 Sedan smart key is a simple process. First, push the switch on the back of the device to remove the internal key. Locate the grooves on the left and right walls inside the area the key came from. Insert the head of your flat-head screwdriver into each groove and twist. This will loosen the two halves of the smart key.

Now, the seams on the sides of the key fob should be coming apart. Insert your screwdriver into these seams, twist, and work your way down each side until the device is fully open. Inside of the smart key, remove the plastic disc battery protector with your fingers. From here, the CR2025 battery can simply be removed with your fingers.

Place your new battery in its place, face up. Put the plastic protector back on top of the battery. 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!

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


Buy CR 2025 Replacement Batteries on Amazon

How to replace the Mazda 6 Sedan 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 flip key fob battery

Scroll down to see a full video tutorial or keep reading for a step by step 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

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

Inside, there is a square indentation that contains our 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. The battery will pop right out.

Place your new battery face down on top of the indentation and press down until it clicks into place. Finally, put the two pieces of the key fob back together. That’s all it takes. You just changed the battery in your Mazda 6 Sedan key fob. Not so bad, was it?

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


Buy CR 1620 Replacement Battery on Amazon

How to replace the Mazda 6 Sedan 2003, 2004, 2005 rounded key fob battery

Scroll down to see a full video tutorial or keep reading for a 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

Changing the battery in this Mazda 6 Sedan rounded key fob is easy. Let’s start by inserting your flat-head screwdriver, coin, or butter knife into the small slot on the bottom of the key fob (where the keyring attaches). Twist the tool until rounded key fob pops open.

Now we have access to the CR2025 battery. 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. 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. Finally, just snap the two pieces of your key fob back together.

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

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


Buy CR 2025 Replacement Batteries on Amazon