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How to Refill AdBlue in the Mercedes GLC

Model: Mercedes Glc C253, X253, MK 1 - Years 2015-2022
Part: AdBlue warning light

Your Mercedes GLC with a Diesel engine has a second tank containing AdBlue: a special liquid that significantly reduces pollutants in exhaust gases. After driving several miles, it is necessary to refill it, and here’s how to do it. First, turn off the car completely and let it cool down sufficiently. Get a container of AdBlue and go to the tank's access door. Open it and unscrew the AdBlue cap. Finally, pour the liquid into the tank and then screw the cap back on. Close the access door, and you’re done.

Updated on 19 May 2026 by ScegliAuto

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