How to Replace the Hyundai Key Fob Battery: Step-by-Step Guide

Ever found yourself locked out of your car because your Hyundai key fob battery died at the worst possible moment? Frustrating, right? Well, fret not! In this article, we’ve got your back with a simple solution that’ll have you back on the road in no time.

Imagine being able to easily replace your Hyundai key fob battery without the hassle of visiting a dealership or a locksmith. With just a few quick steps, you can save time and money while regaining the convenience of keyless entry to your vehicle. Say goodbye to the stress of unexpected battery failures!

Gather Necessary Tools

To start changing the battery in your Hyundai key fob, you’ll need a few essential tools. Here’s what you should gather before getting started:

  • Replacement battery: Make sure you have the correct type for your Hyundai key fob model. Check your owner’s manual or the current battery for specifications.
  • Small flat-head screwdriver or a coin: You’ll use this to open the key fob casing. A coin, like a nickel or a quarter, can also work if you don’t have a screwdriver handy.
  • Tweezers or a small tool: Sometimes, the battery in the key fob can be tricky to remove. Having tweezers or a small tool can help make the process easier.
  • Clean cloth: It’s good to have a clean cloth on hand to keep the key fob components free from dirt or fingerprints.
  • Work area with good lighting: Find a well-lit area to work on your key fob, so you can easily see what you’re doing.

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With these tools in hand, you’re all set to change the battery in your Hyundai key fob. Let’s move on to the next steps.

Locate the Battery Compartment

When changing the battery in your Hyundai key fob, the first step is to locate the battery compartment.

Start by finding the small slot on the side or back of the key fob. This is where the battery is housed and needs to be opened for replacement.

Use a small flat-head screwdriver or coin to gently pry open the cover of the compartment. It should come off easily without applying too much force.

Once the cover is removed, you’ll have access to the old battery that needs to be replaced. Take note of the way the battery is oriented before removing it to ensure the new battery is inserted correctly.

Remove the Old Battery

When it comes to removing the old battery from your Hyundai key fob, it is a straightforward process. Here’s what you need to do:

  • Locate the old battery: Once you have the cover off, you’ll easily spot the old battery inside the compartment.
  • Remove the old battery carefully: Use a small tool like a flat-head screwdriver or your fingernail to gently pry out the old battery.
  • Pay attention to the battery orientation: Make a mental note or take a picture to remember how the old battery was positioned before removing it.
  • Dispose of the old battery properly: Be sure to handle and recycle the old battery according to local regulations or guidelines.
  • Prepare for the next step: With the old battery out, you’re now ready to replace it with a new one.

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Insert the New Battery

Now it’s time to insert the fresh battery into your Hyundai key fob. Here’s how you do it:

  • Handle the new battery with care, ensuring not to damage it.
  • Check the correct orientation for the battery before inserting it.
  • Gently place the new battery into the compartment, following the correct polarity.
  • Securely close the cover of the battery compartment.

Remember to use the appropriate battery type recommended for your Hyundai key fob to ensure optimal performance.

  • Avoid touching the battery terminals to prevent any interference.
  • Double-check the polarity before sealing the compartment.
  • Test the key fob to verify the successful battery replacement.

Test the Key Fob

To ensure the successful replacement of your Hyundai key fob’s battery, it’s crucial to test the device afterwards. Here’s how:

  • Press any button on the key fob to check if it responds by locking or unlocking your vehicle.
  • Ensure the range at which the key fob functions is consistent with its normal capability.
  • Repeat the test a few times to confirm the battery change has been effective.
  • If the key fob doesn’t work, you may need to revisit the battery installation steps.

Remember, testing the key fob after replacing the battery is key to guaranteeing its proper functionality.


That’s it! By following these simple steps, you’ve successfully changed the battery in your Hyundai key fob. Remember to handle the new battery with care and ensure it’s placed correctly. Testing the key fob after replacement is key to guaranteeing it works as it should. Keep in mind the recommended battery type and avoid touching the terminals. Your Hyundai key fob should now be ready to go with a fresh battery, allowing you to lock and unlock your vehicle effortlessly. Enjoy the convenience of a fully functional key fob!

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Frequently Asked Questions

How do I insert a new battery into my Hyundai key fob?

To insert a new battery in your Hyundai key fob, carefully open the fob, remove the old battery, and place the new one in the same position, ensuring the correct polarity. Close the fob securely to complete the process.

What precautions should I take when handling the key fob battery?

When handling the key fob battery, avoid touching the terminals to prevent any interference with the key fob’s functionality. Clean the contacts with a dry cloth if necessary before inserting the new battery.

How can I test if the key fob battery replacement was successful?

To test the key fob after replacing the battery, press any button on the fob to verify that it locks and unlocks the vehicle properly. Conduct multiple tests to ensure consistent functionality.

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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