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How to Replace the Key Fob Battery for Audi A4

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

First, locate the battery. To access it, press the button on the narrowest part of the key fob. This will allow you to extract the metal key. Next, remove the battery slot located directly underneath by pulling it out with your hands to access the battery that needs to be replaced. After removing the old battery and installing the new one, reinstall everything by retracing the steps described.

Updated on 25 February 2026 by ScegliAuto

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