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How to replace the remote battery in the 2009 Mercedes C-Class W204?

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

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As indicated by the length of the video, the procedure to replace the battery in the remote for the 2009 Mercedes C-Class (W204) is quite quick and simple. Start by opening the remote to access the battery compartment.

To do this, you need to slide out the emergency key, as shown in the first few seconds of the video. Once removed, use it as a lever to separate the two parts of the remote.

Now that the dead battery is visible, remove it and replace it with a new one. Once done, close the remote and reinsert the emergency key.


Updated on 28 April 2026 by ScegliAuto


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by ScegliAuto

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