Introduction
Follow this guide to learn how to replace the battery in your 2020 Hyundai Elantra key fob. Over time, key fob batteries can lose charge and need replacement to ensure continued functionality.
This guide applies to the 2020 Hyundai Elantra key fob and may also work for other sixth-generation Elantra models.
Tools
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Insert the wide end of a spudger into the the bottom of the key fob and with a gentle twist, pry open the case.
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Once the case is open enough to get your fingers in the seam, use your hands to separate the top and bottom of the fob.
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Use a spudger to remove the old battery from the holder.
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Replace the CR2032 battery, ensuring the positive side ( + sign) is facing down.
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Slide the emergency key back into the holder until you hear a click indicating it's locked in place.
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To reassemble your device, follow these instructions in reverse order.