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How to Change the Battery of an Audi A3 Key

Model: Audi A3 8V, MK 3 - Years 2012-2019
Part: Key

Replace the key fob battery of an Audi A3. Follow these steps: take the key fob used to unlock the doors. Use a lever to separate the cover from the plastic cap as shown in the video. Once the cover is removed, extract the worn battery from the key fob housing, take a new one of the same size and voltage. Insert the battery, reattach the plastic cap to the key fob cover. Finally, test the correct functioning of the key fob by operating the unlock and lock buttons.

Updated on 1 March 2026 by ScegliAuto

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