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How to Top Up AdBlue on the Citroën C4?

Model: Citroen C4 MK 2 - Years 2010-2018
Part: AdBlue warning light

When the UREA warning light illuminates on the Citroën C4 display, it means you need to top up AdBlue, as the level in the tank is insufficient. To top up the additive fluid, open the boot lid and lift the carpet that acts as flooring. At the bottom left of the spare wheel, there will be a plastic cover to remove, under which you will find the cap for the AdBlue tank. Pour the additive fluid inside, and after topping up, you can close the cap and reposition the carpet.

Updated on 26 April 2026 by ScegliAuto

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