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How to Change the Key Fob Battery for the Audi A4 B9

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

If you own an Audi A4 B9 and the key fob suddenly stops working due to a dead battery, follow the steps below and apply them one by one. First, purchase a new CR2032 battery. Then, remove the emergency key from inside the fob cover and use it to easily pry out the battery holder. Once done, take out the dead battery and replace it with the new one. Finally, reinsert the battery holder back into the fob cover along with the emergency key, and you're finished.

Posted on 6 September 2026 by ScegliAuto

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by ScegliAuto

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