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How to Replace the Battery in a Mercedes C-Class Key Fob

Model: Mercedes Classe C W204 - Years: 2007, 2008, 2009, 2010, 2011, 2012, 2013
Part: Key

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Video tutorial

How do you replace the dead battery in a Mercedes C-Class key fob? Let's see in detail how to do it: take your ignition key fob and remove the metal key. Insert a small screwdriver into the slot of the plastic fob and pry it open. Once the fob is open, use a small screwdriver to remove the battery and replace it with a new one of the same type.

Reassemble the cover on your key fob by pressing on the key case until you hear it click into place. Check the proper functioning of the key with the appropriate buttons.


Updated on 4 March 2026 by ScegliAuto


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by ScegliAuto

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