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How do you reset the AdBlue warning light in the Mercedes C-Class?

Model: Mercedes Classe C W205 - Years 2014-2021
Part: Checks and maintenance

The AdBlue additive became mandatory a few years ago and is used in diesel engines to reduce exhaust emissions. It has its own tank and the range it offers is not low, we are talking about thousands of kilometers, after which a warning light on the instrument panel will indicate the need to refuel it. After refilling, the aforementioned warning light needs to be reset, and this is where electronics come into play. In fact, it is necessary to connect, via OBD port, any PC equipped with specific diagnostic and fault-finding software, to the car's ECU. In a few moments, the warning light is identified and reset.

Posted on 21 July 2025 by ScegliAuto

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by ScegliAuto

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