2017 Mazda3: How to Change the Battery in Your Key Fob

Owning a 2017 Mazda3 is a joy, but even the most reliable cars need a little TLC now and then. One such instance is replacing your key fob battery – a task simpler than you might think! If you’re noticing a decreased range when locking/unlocking your car or a sluggish response from the key fob, it might be time for a quick battery swap. This guide will walk you through the process, getting you back on the road with a fully functional key fob in no time.

What You’ll Need for Your 2017 Mazda3 Key Fob Battery Replacement

Before you begin, gather these few items:

• A fresh CR2025 battery (easily found at most supermarkets, drugstores, and online retailers).
• A small flat-head screwdriver (a coin can also work in a pinch).

Step-by-Step Guide: Changing the Battery in Your 2017 Mazda3 Key Fob

Here’s a simple breakdown of the process:

1. Locate the release button: On the back of your key fob, you’ll find a small, indented button.
2. Release the key: Press and hold the release button, then gently slide the metal key out of the fob.
3. Open the fob: Using the flat-head screwdriver (or coin), carefully pry open the key fob casing along the seam. You should hear a slight click when it separates.
4. Replace the battery: Locate the old CR2025 battery and remove it. Insert the new battery, ensuring the positive (+) side faces up.
5. Reassemble the fob: Align the two halves of the key fob and press them firmly together until you hear a click, signifying it’s securely closed.
6. Reinsert the key: Slide the metal key back into its slot on the fob.

And that’s it! You’ve successfully replaced the battery in your 2017 Mazda3 key fob. Test the buttons to ensure they function properly.

Common Issues and Troubleshooting Tips

My key fob still isn’t working. What now?

• Check the battery: Make sure the new battery is properly installed and the positive (+) side is facing up.
• Clean the contacts: Over time, the battery contacts inside the key fob can accumulate dirt and grime. Gently clean them with a cotton swab and a bit of rubbing alcohol.
• Reprogram the key fob: In some cases, you may need to reprogram your key fob after replacing the battery. Refer to your Mazda3 owner’s manual for instructions on how to do this.

How often should I replace my key fob battery?

Typically, a Mazda3 key fob battery lasts between 2 to 3 years. However, if you notice a decrease in range or responsiveness, it’s best to replace the battery sooner rather than later.

Can I use any type of battery in my Mazda3 key fob?

It’s crucial to use a CR2025 battery. Using an incorrect battery type can result in damage to your key fob.

I’m still having trouble. Where can I get help?

If you’ve followed the steps above and your key fob still isn’t functioning correctly, it’s best to contact your local Mazda dealer or a qualified automotive locksmith for assistance.

Changing the battery in your 2017 Mazda3 Key Fob is a quick and straightforward process. By following these simple steps, you can save yourself a trip to the dealership and keep your Mazda running smoothly. Remember, a well-maintained Key Fob keeps your car secure and your life on the move!