How to Change a Hyundai Key Fob Battery

Hyundai key fob being held near Ioniq


If your Hyundai key fob isn’t working as consistently as it once did or the key fob battery is dead altogether, it’s likely time for a Hyundai key fob battery replacement. Wondering how to change the battery in a Hyundai key fob? The team at Elk Grove Hyundai will show you how to replace and program your Hyundai key fob. If you run into any issues along the way, don’t hesitate to contact our service center for assistance.

How to Open a Hyundai Key Fob & Replace Dead Battery

Before you can complete the Hyundai key fob battery replacement, you’ll need to first know how to open the Hyundai key fob itself. This is an easy task, but it could vary depending on the model year of your Hyundai vehicle.

Step-by-Step Guide: How to Open a Hyundai Key Fob

  • You can remove the metal key by pressing and holding the metal tab or button. Then, use the metal key to open up the back cover on your key fob by inserting the key into the tiny opening and turning it in either direction. The case should pop right open.
  • If you drive an older Hyundai model, there’s a small notch along the side of the key fob. You can either use a flat blade screwdriver or a coin to carefully pry open the key fob at the notch.

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

  1. With the key fob open, gently lift the circuit board to see the battery. Remember how the battery is positioned in the key fob before removing it since this is how you will place the new battery into the key fob.
  2. Check to see the kind of battery needed – most key fobs require a CR2032 battery. These are affordable batteries that are easy to find around the Natomas or online.
  3. Place your new battery into your key fob. The battery needs to make contact with all of the connections.
  4. If you removed a metal key, remember to replace it when your Hyundai key fob is snapped back together.

With the new battery in the key fob, the next step is learning how to program your Hyundai key fob. 

How to Program a Hyundai Key Fob Step-by-Step

To program your Hyundai key fob, follow these steps below: 

  1. Get inside your Hyundai and close the doors.
  2. Using your key, turn your Hyundai to the “ACC” (accessory) position on your ignition.
  3. Hold the “open” or “unlock” button on the key fob until your car lights flashes.

Your Hyundai key fob is now programmed and ready to go! Even so, it’s recommended that you test your key to ensure that it’s working properly. If not, you can reopen the case and check that the battery is in there correctly and the connections are touching. Then, reprogram your Hyundai key fob. If this still doesn’t work, a Hyundai key fob replacement is needed.

Please note that the above will only work on key fobs previously programmed for your Hyundai. If you purchased a brand new key fob, visit our Elk Grove service center to have it programmed to your vehicle. 

Get Your Hyundai Key Fob Battery Replaced at Elk Grove Hyundai

If you’re having any issues programming your Hyundai key fob, don’t hesitate to schedule a service appointment at Elk Grove Hyundai. Check out our service specials to ensure you’re getting an exceptional deal on your next visit to our service center.

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