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How to Reset the Service Light on a Mercedes C-Class?

Model: Mercedes Classe C W205 - Years 2014-2021
Part: Service warning light

To reset the Service light on a Mercedes C-Class, turn the key to the "On" position to activate the instrument cluster. Then, press and hold the OK button and the button for answering calls on the steering wheel spokes. While holding these buttons, a menu will appear. Navigate using the steering wheel controls and select "ASSYST PLUS". Next, choose "Full service" and "Conf. Full service". When the confirmation message appears, select "Yes" and then turn off the instrument cluster to complete the process.

Updated on 19 September 2026 by ScegliAuto

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