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How to Refill AdBlue in the Mercedes A-Class

Model: Mercedes Classe E W212 - Years: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
Part: AdBlue warning light

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AdBlue is necessary for vehicles equipped with a Diesel engine, and it is also found in the Mercedes A-Class. After driving several miles, it is necessary to refill the corresponding tank to ensure a very low level of emissions in line with all current regulations.

To refill AdBlue, turn off the engine and go to the rear of the vehicle. Lift the rear hood and remove the fabric cover.

Then, unscrew the blue cap you see right underneath and proceed to pour the liquid inside, using a funnel or a rubber hose. When finished, screw the cap back on and replace the cover you removed earlier.


Updated on 6 May 2026 by ScegliAuto


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Glow plugs, as the name suggests, raise the temperature of the engine in diesel vehicles to allow for easier starting. The manufacturer, in this case, Fiat for the Ducato 2.3 Multijet, specifies how often they should be replaced, and a warning light will illuminate when it's time. This work is carried out under the bonnet. First, remove the upper engine cover, then lift the coil and, using a socket wrench of the appropriate size, unscrew the glow plug to remove it from the base, followed by installing the new one.

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by ScegliAuto

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