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How to Replace the Key Battery in a 2004 Audi A4

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

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In this new guide for your 2004 Audi A4, discover how to replace the button battery inside the smart key remote. First, get a flathead screwdriver and use it to split the key cover in two. Once done, remove the back cover with your hands and locate the small dead battery inside.

Finally, remove it and replace it with a new compatible battery. At this point, reassemble the cover correctly, and you're done.


Updated on 25 July 2026 by ScegliAuto


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In this tutorial, you will learn how to open the fuel filler flap in the Hyundai i30, a very simple operation that follows the typical procedure of most vehicles. First, unlock the locks using the designated button on the remote, then open the driver's door, locate the release lever on the left side of the seat, and operate it. Next, move to the fuel filler flap, open it completely, unscrew the cap, and refuel as needed. To close the flap, simply press it gently.

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by ScegliAuto

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