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How to Access the AdBlue Control Unit of the Mercedes C-Class

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

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Video tutorial

The instructions in this guide will show you how to access the AdBlue control unit of the Mercedes C-Class. First, open the trunk lid and start removing the interior trim located on the right side; inside, you will find the AdBlue system control unit, as shown in the video.

To remove the control unit, simply unscrew the mounting screws and disconnect the power wiring; perform any necessary repairs or replacement of the control unit, reconnecting it and finally reassembling the outer trim.


Posted on 6 September 2026 by ScegliAuto


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