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How to Replace the Key Battery in a Volkswagen Passat B6

Model: Volkswagen Passat B6, 3C - Years 2005-2010
Part: Key

If the battery in your Volkswagen Passat B6 key is completely dead and you need to replace it, this guide is just what you need. Let’s go through the required steps. First, pull out the emergency key and remove the top part of the metal cover. Once done, using the same key or a flat screwdriver, open the cover and locate the battery. Finally, replace it with a new compatible model and correctly reassemble the cover, ensuring you reinsert the physical key inside.

Updated on 13 July 2026 by ScegliAuto

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