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How to Replace the Key Battery of the Audi A4

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

In this guide for all Audi A4 B9 owners (2014-2023), learn the steps to quickly and correctly replace the battery in your key. First, take the key and pull out the physical emergency key by sliding it outward. Next, locate the battery holder inside the cover and remove it. Once this simple step is complete, proceed to replace the old, exhausted battery with a new, fully compatible one.

Updated on 28 August 2026 by ScegliAuto

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