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How to Replace the Key Battery of the Hyundai Ioniq

Model: Hyundai Ioniq MK 1 - Years 2016-2022
Part: Key

To correctly replace the button battery in your Hyundai Ioniq key takes just a few minutes. Follow these steps. First, locate the small metal button in the upper corner of the key and press it to easily slide out the emergency key. Then, use this key or a flat screwdriver to open the key and access the dead battery. Once done, remove the old battery and replace it with a new one. Finally, reassemble the key correctly.

Updated on 19 July 2026 by ScegliAuto

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