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How to replace the key battery on the Hyundai i40

Model: Hyundai I40 MK 1 - Years 2011-2019
Part: Key

If you notice that the remote key for your vehicle no longer opens the doors or you need to be very close for the central locking to unlock, it is necessary to replace the battery. You will find the instructions provided in this description. First, remove the emergency key and use it to pry open the rear cover of the remote. Underneath the cover, you will find the battery, which you will remove and replace with a new one, ensuring the polarity is correct. Finally, close the rear cover and reinsert the emergency key.

Updated on 13 July 2026 by ScegliAuto

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