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How to Replace the Key Fob Battery in an Audi A4?

Model: Audi A4 B8 - Years 2007-2016
Part: Key

Replacing the key fob battery in an Audi A4, as shown in this tutorial, is an extremely simple and quick operation. For this, you will need a replacement CR2032 battery and a small flathead screwdriver. Start by extending the emergency key by pressing the designated button, then insert the screwdriver into the indicated slot, pry it open, and unlock the rear cover. Once fully opened, you can remove the old battery, insert the replacement while ensuring the correct orientation, and reassemble everything.

Updated on 26 June 2026 by ScegliAuto

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by ScegliAuto

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