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How to replace the battery of the Mercedes CLS550 key

Model: Mercedes CLS C219, MK 1 - Years: 2004, 2005, 2006, 2007, 2008, 2009, 2010
Part: Key

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Video tutorial

Inside the key of your Mercedes CLS550 there are two batteries, and in the following guide we will explain the steps you need to take if you want to replace one or both of them. First of all, you need to have one or more batteries of the same type available, then remove the emergency key from the top of the cover and use it to remove the protective cover.

At this point, locate the two batteries and proceed with the replacement. Finally, you need to correctly reassemble the protective cover and insert the emergency key inside.


Posted on 15 April 2025 by ScegliAuto


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by ScegliAuto

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