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How to Replace the Key Fob Battery of an Audi A4

Model: Audi A4 B9 - Years 2014-2024
Part: Key

How to replace the key fob battery of an Audi A4? Let's see how to do it. Take your key fob and press the button to release the metal key; separate the two halves of the fob (as shown in the video). Use a tool to open the cover and remove the worn battery from the compartment. Get a new battery of the same size and voltage. Reassemble the two plastic parts of the key fob cover and then join the two halves of the cover (as shown in the video). Check the proper functioning of the key fob (use the buttons on the top of the fob).

Updated on 9 March 2026 by ScegliAuto

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