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Replace the Ignition Key Battery of the Audi A4

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

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Video tutorial

Replacing the ignition key battery of the Audi is a very simple task that takes no more than 5 minutes. As the video shows: by pressing the sides of the plastic key fob, you can pull out the metal key. Once this is done, you can access the battery compartment of the ignition key remote.

Carefully and gently, remove the battery compartment housing with a rocking motion to slide it out. The battery will be immediately visible; it is a CR2032. Once replaced, simply reinsert the battery compartment and then the ignition key.


Updated on 10 March 2026 by ScegliAuto


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by ScegliAuto

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