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

Man opening car with key fob


Many drivers in Mentor use remote start, push button start, and keyless entry, but you might run into a situation where these features cease to work. If that happens and you need to know how to change the battery in a Mazda key fob, we’ll help you out. And if you need a Mazda key fob battery replacement, our service team is happy to assist you. This is what you’ll need to get it done:

  • A replacement battery (CR2025 battery)
  • Your Mazda key fob
  • A small flat head screwdriver with the head wrapped in tape to avoid scratches

Opening Your MAZDA Key Fob

One thing that makes a Mazda so convenient is that the process for a Mazda key fob battery replacement in Cleveland is this simple:

  1. Press the auxiliary key button on the back of your key fob to remove the metal auxiliary key.
  2. With the metal key gone, you’ll see a slot on either side of the key fob case.
  3. With the tape-wrapped flathead screwdriver, pry open the case one side at a time. Go gently to avoid damage to the key.
  4. This will remove the case. Place it in a location you won’t easily lose track of.

Replacing Your MAZDA Key Battery

Once your Mazda key fob is open, it’s time to unlock and replace your Mazda key battery. This will only take a second:

  1. Take out the battery cap and put it by the key fob case.
  2. Your Mazda key fob battery should be fully exposed. Remove it, but be sure not to damage the small rubber ring it sits upon.
  3. If you scratched or damaged the rubber ring, you’ll want to replace this component before moving on.
  4. With the ring put in place, take the new replacement battery and set it at its position in the key fob. The positive (+) side should be up, facing you.
  5. Return the battery cover to where it should be, then reattach both sides of the key fob case. Press until you hear them click into place.

Your Service Team is Close by in Bedford

We’d love to have you in our service bays near Beachwood. If you’ve got a question about the services we offer, including our genuine OEM parts, we’d love to answer it for you! If you’re ready, it’s time to connect with us on our contact form.

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