How to Change Hyundai Key Fob Battery: A Step-by-Step Guide

Ever found yourself stuck outside your Hyundai, frantically pressing the key fob with no response? It’s a frustrating moment we’ve all experienced. But what if there was a simple solution that could save you time and money? In this article, you’ll discover an easy step-by-step guide on how to change the key fob battery in your Hyundai.

Imagine the convenience of being able to replace the battery yourself without having to rush to the dealership or a repair shop. With just a few minutes of your time, you can have your key fob working like new again. Say goodbye to the hassle of dealing with a dead key fob and hello to a quick and cost-effective fix.

Ready to take control of your Hyundai key fob and say goodbye to those stressful moments? Let’s dive into the simple yet valuable process of changing the key fob battery.

Locate the Key Fob Battery Compartment

To open it, look for a small lever or button that releases the back cover. It’s typically located on the back of the fob and may have a tiny indicator showing the lock/unlock icons. Press it and slide or flip the cover to reveal the battery compartment.

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Some Hyundai key fobs have a twist-and-open design, where you need to rotate a part of the fob to access the battery. It might require a bit of force, so don’t be afraid to use a little pressure to unlock it.

In newer models, the battery compartment might be secured by screws. If this is the case, grab a screwdriver and carefully remove the screws to open it. Be cautious not to misplace them, as they are crucial for securing the fob later.

Remember, each key fob model can have its unique way of concealing the battery compartment, so be patient and gentle when trying to locate and open it.

Open the Key Fob

To access the battery compartment in your Hyundai key fob, you’ll need to open it up. Here’s how you can do it:

  • Look for a small lever or button: Pressing or sliding this mechanism will release the cover and allow you to reach the battery.
  • Try a twist-and-open design: Some key fobs require you to twist a part of the fob to reveal the battery compartment.
  • Check for screws: In certain models, you may need to remove screws to unlock the cover and replace the battery inside.

Remember to handle your key fob with care as each model may have a different method of concealing the battery compartment.

Remove the Old Battery

To replace your Hyundai key fob battery, you’ll need to start by removing the old one. Here’s how:

  • Look for a small lever, button, or switch on your key fob. Press or slide it to reveal the battery compartment.
  • Use a twist-and-open design if your key fob has one. Twist the key fob to unlock and access the battery compartment.
  • For some models, you may need to remove screws to open the key fob. Grab a small screwdriver to carefully unscrew and release the battery compartment.

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Remember to handle the key fob gently throughout this process to avoid any damage.

Insert the New Battery

When it’s time to insert the new battery into your Hyundai key fob, follow these simple steps:

  • Step 1: Take the fresh battery and ensure it’s the correct type for your key fob model.
  • Step 2: Insert the battery into the compartment with the positive side facing the appropriate direction as indicated in the fob.
  • Step 3: Gently press the battery down to secure it in place.
  • Step 4: Put the cover back on by aligning it correctly with the key fob and gently pressing down until it clicks into place.
  • Step 5: Test the key fob to ensure the new battery is working properly.

Remember, if you encounter any difficulties or your key fob isn’t working as expected after replacing the battery, it may be best to consult a professional for assistance.

Test the Key Fob

When you’ve completed changing the battery in your Hyundai key fob, it’s essential to test it to ensure everything is working correctly. Here’s how you can do it:

  • Stand close to your vehicle.
  • Press the buttons on the key fob to test if the car locks and unlocks.
  • Check that the key fob functions smoothly within a reasonable range.

Should you encounter any issues after testing the key fob, consider seeking professional help to address any underlying problems.


You now have the knowledge to confidently change the battery in your Hyundai key fob. Remember to follow the steps carefully, ensuring the correct battery type, secure insertion, and cover alignment. Test your key fob after replacement to ensure smooth operation. If you encounter any ongoing issues, seek professional assistance. Happy key fob battery changing!

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Frequently Asked Questions

1. What type of battery should I use for my Hyundai key fob?

Use a CR2032 coin cell battery for Hyundai key fobs.

2. How do I correctly insert the new battery into my Hyundai key fob?

Remove the key blade, separate the halves, replace the battery with the positive side facing up, and reassemble the key fob.

3. How should I secure the key fob after replacing the battery?

Ensure the key fob halves are securely clicked together to prevent any loose connections.

4. How do I align the cover properly after replacing the battery in my Hyundai key fob?

Align the cover properly and ensure it is securely attached to avoid any issues.

5. How can I test if the new battery in my Hyundai key fob is working correctly?

Check if the key fob locks and unlocks the car smoothly within range to confirm the battery replacement success.

Battery industry professional with 5+ years of experience. Bachelor of Science in Electrical Engineering from Georgia Tech. Specializes in power systems and renewable energy.

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