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How to reset the AdBlue light on a Citroën C4?

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

To reset the AdBlue light on a Citroën C4, you need to top up with the additive liquid, pouring it into the designated tank located at the rear lower part of the car. To locate it, open the tailgate and remove the carpet at the base of the boot: on the left side, you will find a blue cap that needs to be removed for the top-up. The additive liquid can now be poured into the tank, then close it again with the cap and check that the light is reset.

Updated on 10 September 2026 by ScegliAuto

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