Mazda 6 Hatchback Key Fob Battery Remote Replacement DIY Years 2003-2008

The Mazda 6, or Mazda6, was released in 2003 and was marketed as the first example of the company’s unique design philosophy. This vehicle set the stage for the modern era of Mazda vehicles. It was an incredibly popular car, selling faster than all previous Mazda models.

The first-generation Mazda 6 that ran from 2003-2008 consisted of a lineup of the Sport Sedan, 5-Door, and the Sport Wagon. The 5-Door, also known as the Hatchback, used 2 different key fobs over the years—the “rectangular” key fob, and the “flip” key fob. In this guide we will go over each of these, showing you how to replace their batteries, DIY. Looking for a different Mazda key fob?

6 HatchbackFlip2006, 2007, 2008CR1620Check on Amazon
6 HatchbackRectangular2003, 2004, 2005CR2025Check on Amazon

How to replace the Mazda 6 Hatchback 2006, 2007, 2008 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)
• Pen, pencil, toothpick or another thin tool

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To change the battery, we first need to open up the key fob. First, look to the left side of the device where the key is housed. Inside the key’s compartment, there is a seam on the top between the two halves of plastic. Use your flat-head screwdriver to push the outer piece of plastic up. Push until you can fit a flat-head screwdriver into the opening on the bottom of the key (where the two holes for the keyring are). Put your tool into the bottom and twist to fully remove the top half of the fob.

Now that we are inside, look at the square indentation that holds the battery in place. Take a precision screwdriver (3.0mm/PH0 or smaller) and insert it into the bottom-right corner of the compartment (there is a small triangle pointing to this corner.) Push down into the bottom of the corner and then attempt to pry the battery out. Gently rocking and prying, the battery should pop out easily.

Place your replacement CR1620 battery face down into the indentation and press down until it clicks into place. Lastly, replace the top half of the key fob. Well done! You have a new battery in your Mazda 6 Hatchback key fob.

Mazda 6 Hatchback Flip Key Fob Battery Replacement (2006 - 2008)
This is the battery for this Mazda 6 Hatchback 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 Hatchback 2003, 2004, 2005 rectangular 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
• A coin or butter knife

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Replacing the battery in this Mazda 6 key fob is simple. First, locate the small slot between the two halves of the key fob on the bottom of the device (where the keyring is). Take your screwdriver, coin, or butter knife, and insert it into the slot. Gently twist your tool until the key fob pops open.

Now we can remove the CR2025 battery. Look for the red dot on the plastic holding the battery in place. This is where we want to apply pressure. With the tool you just used, apply pressure to the red dot-side of the battery, close to the edge. With minimal effort, the battery should pop out. Now, we can take a new CR2025 and slide it up towards the red dot, and push the bottom of the battery into place. Make sure your battery is face up.

All that’s left is to click the two parts of the key fob’s body back together. With that, you’re finished! You have a brand new battery in your key. Not so hard, was it?

Mazda 6 Hatchback Rectangular Key Fob Battery Replacement (2003 - 2005)
This is the battery for this Mazda 6 Hatchback key fob:

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