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How to Replace the Key Fob Battery in the Hyundai Eon?

Model: Hyundai eON MK 1 - Years 2011-2019
Part: Key

As we can see in this tutorial, replacing the battery in the Hyundai Eon key fob is a very simple and quick task. To do this, you will only need a replacement CR1620 battery and a small screwdriver with a flat tip and a star tip. To open the key fob, unscrew the screw near the metal key, then pry along the seam that separates the two halves. Next, remove the internal module, open it, and proceed with replacing the battery, making sure to respect the polarity. Finally, follow the reverse procedure to reassemble everything.

Updated on 15 May 2026 by ScegliAuto

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by ScegliAuto

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