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How to Refill AdBlue in a Hyundai Diesel

Model: Hyundai Hyundai Various
Part: AdBlue warning light

Video tutorial

In this video, we can see how to refill AdBlue in a Hyundai diesel: this is a fluid used to convert exhaust gases and is stored in a separate tank. It is made up of a non-toxic mixture of urea and deionised water, and it applies only to diesel vehicles to reduce harmful gases produced by the car's exhaust.

The result of this chemical process is the production of nitrogen and water vapour, two harmless gases. Nowadays, AdBlue is readily available, found at both pumps and in containers, and must be topped up whenever the vehicle alerts you. The refill neck is located next to the fuel tank cap and is blue for easy identification.

Simply unscrew it and refill, then when you get in the car, scroll left through the menu, and the first menu you will find will be for AdBlue: scroll to the bottom until you see that the maximum level has been reached.


Updated on 10 October 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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