How to Change Battery in a Hyundai Key Fob

Key fob batteries typically last a few years, so unless you upgrade your car frequently, you’ll eventually need to replace the battery. If you’re already in that situation or want to know how to do it when necessary, understanding the proper steps can save you lots of time and energy. Read as we discuss some of the early signs that a Hyundai key fob battery needs replacing, and follow our step-by-step guide on how to do it.

Signs of a Dying Hyundai Key Fob Battery

Recognizing when it’s time for a Hyundai key fob battery replacement can help you avoid risking the key fob quitting on you. Some common signs of a dying key fob battery include the following:

• You have a shorter range than before: You may notice that you must be closer to your Hyundai than normal for the key fob to work. It’s one of the most often-encountered early signs that the key fob needs a new battery.
• You get a “key fob battery low” message: Many recent Hyundai models come with smart key systems that let the vehicle’s computer know when the key fob battery’s voltage drops below a certain level. You’ll then see a warning on your Hyundai’s dashboard.
• You need to press the buttons repeatedly: Another common sign is needing to push the key fob buttons multiple times for them to work. If this happens consistently, consider changing the key fob battery promptly.
• The key fob doesn’t always work well: You may have a perfectly functioning key fob today and one with a shortened range and inconsistent input tomorrow.

Step-by-Step Guide to Replacing the Hyundai Key Fob Battery

A few simple steps can make the task easier when it’s time to change the battery in a Hyundai key fob.

Find Out What Type of Battery You Need

Start by checking the owner’s manual to determine what type of battery your Hyundai key fob uses. Most Hyundais use a CR2032 battery for the key fob, but some require a CR2450 battery.

Identify Your Key Fob Type

Hyundais have different types of key fobs, including standard and flip-design ones. Determining the correct type can help you understand the tools and procedures required to open it.

Open the Key Fob Case

How you open the key fob case differs based on the Hyundai model you drive. Newer Hyundais have a metal tab or button that you can use to remove the metal key from the fob. You can use that key to open the fob’s back cover by inserting its tip into the small opening and prying it open.

Older Hyundai models have a small notch on the key fob’s side. You’ll need a flathead screwdriver or a coin to put inside that notch and move it in either direction to pop open.

Remove the Old Battery and Insert the New One

Once the key fob is open, be careful not to damage the sensitive components inside. Gently remove the old battery and place the new one in the same position.

Reassemble the Key Fob

Once you’ve replaced the battery, snap the casing back together. Make sure it’s sealed properly on all sides.

Test the New Battery

You now need to ensure the new battery works as it should. Start by testing its basic functions, such as locking and unlocking the doors. Gradually move away from your Hyundai to test the key fob’s range. If your Hyundai has proximity key entry and push-button start features, enter the vehicle with the key fob in your pocket and turn your car on. Check the instrument cluster to ensure there’s no warning message regarding the key fob battery.

What Do I Do if the Key Fob Still Doesn’t Work?

If your Hyundai’s key fob still isn’t working after carefully following the steps above, there are a few things you can try, including the following:

• Double-check the battery’s positioning: You may not have positioned the battery correctly or have the wrong battery type. Check the placement and type.
• Check for signs of key fob damage: Another common reason for a Hyundai key fob not working is physical damage. Look for signs of damage, such as a crack or a dent, and, if possible, try your spare key fob to ensure the issue is from the initial fob instead of the vehicle’s keyless entry system.
• Reprogram your key fob: Changing your Hyundai’s key fob may cause it to no longer sync with the vehicle. While you may be able to find instructions in your owner’s manual on how to do it yourself, you can also visit us and let our team help you.
• Visit a professional dealership: If your Hyundai key fob is still not working, consider visiting us at Checkered Flag Hyundai World in Virginia Beach, Virginia. We’ll use professional diagnostics tools to identify the issue, reprogram the key fob if needed, test the vehicle’s entire system, and replace the fob if it’s beyond repair.

Visit Checkered Flag Hyundai World for Your Hyundai Repair and Maintenance Needs

From key fob battery replacements to highly complex repair and maintenance operations, you can trust our factory-trained technicians to do a great job on your Hyundai. We use state-of-the-art equipment and original equipment manufacturer parts, so you can be sure your Hyundai will be as good as new when it leaves our service center. We pride ourselves in the quality of our services and try to make the whole experience as pleasant as possible. Contact us today to book your service visit.

a green suv parked in a grassy field by Hyundai Motor Group is licensed with Unsplash License