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How to Reset the AdBlue Warning Light on the Mercedes C-Class

Model: Mercedes Classe C W204 - Years 2007-2013
Part: AdBlue warning light

If you encounter a problem with the AdBlue supply system, follow these steps to clear the error and turn off the warning displayed on the dashboard using a diagnostic app on your smartphone. First, connect your smartphone to the vehicle, select the make and model of your car, and wait for the connection to the control unit and data reading. Next, select the type of system where the problem has been highlighted and wait for the data reading. Then, select the type of error you want to reset, confirm the deletion request, and at this point, the warning on the instrument cluster will be cleared.

Updated on 3 July 2026 by ScegliAuto

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