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How to Change the Audi A4 Key Fob Battery

Model: Audi A4 B5 - Years 1994-2000
Part: Key

In this brief guide, learn how to disassemble and replace the battery in the Audi A4 key fob. First, take your key fob and start by removing the back cover. Use a thin, pointed object to pry open the sides. Next, remove the battery as shown in the video. Now, replace the old battery with a new one of the correct type (in this case, a CR 1620). Insert it in the correct orientation into the key fob and reattach the back cover, ensuring it fits securely!

Updated on 12 May 2026 by ScegliAuto

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by ScegliAuto

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