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How to Reset the AdBlue Light in a Mercedes C-Class?

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

If the AdBlue light has turned on in the instrument cluster of your Mercedes C-Class, it means that the fluid in the emissions system has reached the minimum level and will need to be topped up. This is a very simple and quick operation; let's see how to proceed in this tutorial. First, purchase two 2.6-gallon jugs of urea at an auto parts store, then ensure the engine is off and open the fuel door. Next, unscrew the blue cap, insert the jug's hose into the opening, and add the necessary amount of fluid to reach the maximum level.

Posted on 17 March 2026 by ScegliAuto

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