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How do you reset the AdBlue warning light on the Citroën C5 Aircross?

Model: Citroen C5 Aircross MK 1 - Years 2017-2022
Part: AdBlue warning light

The AdBlue warning light that appears on the instrument panel of the Citroën C5 Aircross can be reset by opening the fuel door located on the right side of the car at the rear. Once this fuel door is opened, you will find a blue cap underneath that can be unscrewed. After unscrewing it, you can add the necessary amount of additional fluid to complete the refill. Once the refill is done, you can close the tank again with the blue cap to verify that the warning light has been reset.

Posted on 6 July 2025 by ScegliAuto

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