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Replacing the Key Battery for 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

How do you change the battery in the key fob for your Audi A4? Let's see how to do it in this video. Take your ignition remote and remove the metal key. Once you have removed the metal key, pull out the battery holder from inside (press the locking tabs).

Get a new battery of the same type and replace it inside the holder. Reattach the battery holder to your remote by pressing it back in until it clicks into place.

Check the key's functionality by pressing the buttons on it.


Updated on 14 March 2026 by ScegliAuto


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by ScegliAuto

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