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

Ever found yourself locked out of your car because the key fob battery decided to call it quits at the worst possible time? Frustrating, right? Well, worry not, because in this article, you’ll discover the simple steps to replace the battery in your Hyundai key fob. No more frantic searches for spare keys or waiting for expensive locksmiths – you’ve got this!

Imagine the relief of knowing you can easily replace your key fob battery at home, saving time and money. No more last-minute dashes to the dealership or struggling with a malfunctioning key fob. With just a few minutes of your time, you’ll have your Hyundai key fob up and running smoothly again, ready to unlock new possibilities.

Check the Battery Type

When replacing the battery in your Hyundai key fob, the first step is checking the battery type you need. Typically, Hyundai key fobs use CR2032 batteries.

To determine the battery type:

  • Look for markings on the old battery.
  • Refer to your Hyundai owner’s manual for specifications.
  • Purchase the correct battery to ensure proper functioning.

Gather Necessary Tools

When replacing the battery in your Hyundai key fob, it’s essential to have the right tools at hand. Here’s what you’ll need:

  • New battery: Ensure you have the correct replacement battery for your Hyundai key fob. Typically, you’ll need a CR2032 battery.
  • Small flat-head screwdriver: This will help you open the key fob case without causing damage.
  • Tweezers or small pliers: Handy for handling the small battery and placing it correctly.
  • Clean cloth: To wipe the inside of the key fob and ensure a clean environment for the new battery.
  • Optional: Owner’s manual: While not a tool, having your owner’s manual nearby can be helpful if you encounter any difficulties during the process.

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Remember to work on a flat surface with good lighting to prevent losing any small components.

Open the Key Fob

When you’re ready to replace the battery in your Hyundai key fob, the first step is to open the key fob carefully to access the old battery.

  1. Locate the Seam: Take a close look at your key fob to find the seam where the two halves of the fob meet.
  2. Insert the Tool: Gently insert a small flat-head screwdriver or a coin into the seam.
  3. Twist and Pry: Twist the tool slightly to separate the halves, then gently pry them apart.
  4. Be Patient: It may take a bit of gentle maneuvering to open the fob without damaging it.
  5. Mind the Buttons: As you open the fob, be careful not to damage or dislodge any buttons inside.

By following these steps, you’ll be able to access the battery compartment inside the key fob easily.

Replace the Battery

Replacing the battery in your Hyundai key fob is a straightforward process that you can easily do at home. Here’s how:

  • Step 1: Locate the battery compartment by sliding the release switch or removing the back cover.
  • Step 2: Identify the type of battery needed for your key fob by checking the old battery or referring to the owner’s manual.
  • Step 3: Carefully remove the old battery by using a small flat-head screwdriver or your fingernail to pop it out.
  • Step 4: Insert the new battery with the correct side facing up, ensuring it fits snugly in place.
  • Step 5: Put the key fob back together by snapping the cover or sliding the back until it clicks into place.

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By following these simple steps, you can ensure that your Hyundai key fob continues to work smoothly with a new and functioning battery.

Test the Key Fob

  • Stand close to your Hyundai vehicle.
  • Press the various buttons on the key fob (lock, unlock, trunk release) to check if they respond.
  • Observe the indicator light on the key fob. It should flash when you press a button.
  • If the key fob doesn’t work, try reinserting the battery to make sure it’s correctly placed.
Working key fob Indicator light flashes
Non-working key fob Indicator light does not respond


That’s it! By following these simple steps, you can easily replace the battery in your Hyundai key fob at home. Keeping your key fob in top condition ensures smooth operation and convenience when accessing your vehicle. Remember to test the key fob after replacing the battery to ensure everything is working as it should. If you encounter any issues, don’t hesitate to double-check the battery placement. With a fresh battery, your Hyundai key fob will continue to serve you well. Happy driving!

Frequently Asked Questions

How can I replace the battery in my Hyundai key fob?

To replace the battery in your Hyundai key fob, locate the battery compartment, identify the correct battery type, carefully remove the old battery, insert the new battery correctly, and reassemble the key fob.

How do I test if my Hyundai key fob is working after replacing the battery?

Test your Hyundai key fob by standing close to the vehicle, pressing the lock, unlock, and trunk release buttons to check for responses. Additionally, observe the indicator light on the key fob, which should flash when a button is pressed.

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What should I do if my Hyundai key fob is still not working after replacing the battery?

If the key fob does not work after replacing the battery, reinsert the battery to ensure it is correctly placed. It’s important to follow the steps carefully to ensure proper functioning.

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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