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How to reset the AdBlue warning light on the Renault Trafic?

Model: Renault Trafic MK 3 - Years 2014-2026
Part: AdBlue warning light

If the AdBlue warning light on the Renault Trafic remains on even after refilling with the additive, it is possible that a programming error has occurred in the AdBlue management unit: this unit is located inside the engine compartment and must be removed and disconnected to perform a diagnosis. The unit must then be connected to the appropriate diagnostic tool so that all stored errors can be reset correctly; after the reset, reinstall the unit, ensuring everything functions correctly.

Updated on 20 July 2026 by ScegliAuto

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