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How to reset the AdBlue warning light on Citroën C5?

Model: Citroen C5 MK 3, C5 X - Years: 2021, 2022, 2023, 2024, 2025, 2026
Part: AdBlue warning light

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Video tutorial

If the AdBlue warning light has illuminated on the instrument cluster of your Citroën C5, it means that the liquid in the emissions control system has reached the minimum level and needs to be topped up. This is a very simple and quick operation. First, purchase a 10-litre canister of urea from a car parts store, then, with the engine off, open the fuel filler flap and unscrew the blue cap. Next, insert the supplied hose from the canister into the opening, add the necessary amount of liquid to reach the maximum level, and drive a few miles.


Posted on 2 March 2026 by ScegliAuto


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