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Replacing the Key Fob Battery for Audi A4 B6

Model: Audi A4 B6 - Years 2000-2004
Part: Key

In this video tutorial, you will see instructions on how to disassemble and replace the battery in the remote key fob of an Audi A4 B6. First, take your key fob and remove the back cover by prying it open with something thin. Next, take out the key and extract the tray containing the battery, as shown in the video. At this point, remove the old battery and replace it with a new one of the correct type (in this case, a CR 2032 3V). Insert it in the correct orientation and place the tray back into the key fob, reassembling everything!

Updated on 1 May 2026 by ScegliAuto

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by ScegliAuto

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