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How to Open the MAZDA Key Fob & Replace a Dead Battery

Man opening car with key fob


Interested to learn how to change the battery in a Mazda key fob? No matter the vehicle you drive around Fort Worth, our service team at Hiley Mazda of Hurst can help you learn how to change a battery fob, how to open the Mazda6 key fob, and more. Check out our online service guide to get started. Before you make an appointment for one of our service technicians to help, if you decide to try at home, make sure you have the following:

  1. A replacement battery on hand (CR2025 battery)
  2. Your Mazda key fob
  3. A small flat head screwdriver with the head wrapped in tape to prevent scratches

How to Open Your MAZDA Key Fob

Once you learn how to open your Mazda6 key fob, you’ll have the knowledge needed to open your Mazda key fob no matter which model you drive and replace the battery. Follow these simple steps to reveal the battery:

  1. Press the auxiliary key button on the back of your key fob in order to remove the metal auxiliary key
  2. With the metal key gone, you’ll notice a slot on either side of the key fob case. 
  3. Use the tape-wrapped flathead screwdriver to pry open the case, first on one side, and then on the other. Work gently.
  4. This should remove the case. Place the latter in an easily-visible spot where you won’t lose track of it.

How to Change the MAZDA Key Fob Battery

Wondering how to change the battery in a Mazda key fob? Now that you have the key fob open, replacing the Mazda key fob battery will be simple. This process should only take a moment:

  1. Remove the battery cap, and set it next to your key fob case.
  2. Your Mazda key fob battery should be fully exposed. Remove it, being careful not to damage the small rubber ring that it sits upon.
  3. If you scratched or damaged the rubber ring, it’s important to replace this component before moving on.
  4. With the ring in place, take your new replacement battery and set it in its place in the key fob. The positive (+) side should be up, facing you.
  5. Return the battery cover to its proper place, and then reattach both sides of the key fob case. Press until you hear them click into place.

Quick and Easy Service at Hiley Mazda of Hurst

Schedule service with our team today to get your Mazda key fob battery replaced with ease. Our team also offers Mazda service coupons so you can save more on the services you need. If you have questions in the meantime, don’t hesitate to contact our team.

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Hiley Mazda of Hurst 32.8199514, -97.2082537.