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How to Change the Key Battery of an Audi A4 B9

Model: Audi A4 B9 - Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
Part: Key

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Video tutorial

Today, let's see how to change the battery (CR2032) of the key for an Audi A4 model B9. Start by removing the physical key from the remote. Press and hold the two unlock buttons on the side of the key, then pull it out as shown in the video.

Next, continue to hold the two release buttons and remove the battery holder, using a small flathead screwdriver if needed. Now, remove the old battery and replace it with a new one, inserting it into the holder with the positive side facing down.

Finally, reassemble everything.


Updated on 22 October 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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