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How to Replace the Key Fob Battery for the Audi A4

Model: Audi A4 B7 - Years: 2004, 2005, 2006, 2007, 2008
Part: Key

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Video tutorial

Today's instructions will show you the steps needed to disassemble and replace the battery in the key fob for the Audi A4. First, take your key fob and start by removing the plastic back cover, prying at the sides with something thin; this will give you access to the battery and the circuit board, as shown in the video.

At this point, remove and replace the battery with a new one of the correct type and the same amperage; insert it in the correct orientation and finally reassemble the back cover of the key fob!


Updated on 30 September 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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