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How to Change the Key Battery on the Audi A3

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

It often happens that you press the buttons on your car's remote but receive no response. Today, we will replace the battery in an Audi A3 key, a simple and quick task. First, turn the key to the side opposite the buttons and you will notice a cap that can be removed using a screwdriver. Once the cap is removed, you will see the depleted battery and can extract it. After removing the battery, replace it with one of the same size and voltage, ensuring it is inserted correctly. Finally, replace the cap and check the functionality.

Updated on 28 May 2026 by ScegliAuto

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