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How to Replace the Key Fob Battery in an Audi A6?

Model: Audi A6 MK 3, C6 - Years 2004-2012
Part: Key

In this tutorial, you will learn how to replace the key fob battery in an Audi A6, a very simple and quick operation. You will need a small flathead screwdriver and a replacement CR2032 battery. First, extend the emergency metal key by pressing the designated button, then locate the indicated slot, insert the screwdriver tip into it, and pry it open. Once the rear cover is open, remove the old battery, insert the replacement battery in the correct orientation, and reassemble everything.

Updated on 22 September 2026 by ScegliAuto

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