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How do you replace the remote key battery in the Mercedes Class C W205?

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

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Video tutorial

The key of a car when it no longer responds to commands, especially the central locking, almost certainly has a dead battery; it is very rare for the key itself to be broken. There is no need to go to a workshop or authorized centers; you can remedy the situation independently in a few seconds, and for those who don't know how to do it, here is the procedure: remove the emergency key from the shell, use it to pry open the back face of the shell, open it, and gain direct access to the battery, pull it out of its housing and install the new one.


Posted on 19 January 2026 by ScegliAuto


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by ScegliAuto

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