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

Model: Mercedes Classe C W205 - Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Part: AdBlue warning light

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Video tutorial

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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To reset the tyre pressure warning light on the Kia Niro EV, inflate the tyres until they reach the correct pressure value. This value is indicated on the sticker attached to the driver's door pillar. Once the tyres are inflated, turn on the instrument cluster to check that the warning light has completely disappeared from the display. If it is still present, you may need to drive for a few miles to ensure it disappears completely from the screen.

Watch the video!


by ScegliAuto

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