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Disassemble Key Fob and Replace Battery for Mercedes C-Class

Model: Mercedes Classe C W205 - Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Part: Key

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Video tutorial

In this video tutorial, you will learn how to disassemble the key fob to replace the battery for a 2019-2020 Mercedes C-Class. First, extract the key from the fob by pressing the button on the back, then remove the rear cover.

Next, take out the battery compartment located on the side, as shown in the video. At this point, remove the old battery and replace it with a new one of the correct type (in this case, a CR 2032 3V). Insert it in the correct orientation and reassemble the fob by inserting the key!


Updated on 19 April 2026 by ScegliAuto


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by ScegliAuto

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