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What is the AdBlue warning light and how to turn it off in a Citroen C3 Aircross?

Model: Citroen C3 Aircross MK 1 - Years 2017-2024
Part: AdBlue warning light

The AdBlue system features a pump that injects a small amount of diesel exhaust fluid based on the engine's operating conditions. A small tank with a fluid level sensor stores the fluid, so frequent top-ups are not necessary. In a Citroen C3 Aircross, this light is yellow, and to turn it off, most of the time, you just need to fill the tank. This warning light does not indicate a safety issue but serves as a reminder. When the low fluid warning appears, you will still have a good amount of time to address it before a refill becomes essential for starting the vehicle.

Updated on 5 May 2026 by ScegliAuto

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