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Checking the AdBlue Tank Level of the Mercedes S-Class MK5

Model: Mercedes Classe S W221, MK 5 - Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Part: AdBlue warning light

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Video tutorial

To comply with current anti-pollution regulations, the diesel engine of the Mercedes S-Class is equipped with a nitrogen oxide reduction system that uses AdBlue fluid. This is contained in a dedicated tank, and a control system prevents the vehicle from starting if the fluid level is too low. To check the tank level, sit in the driver's seat, turn on the ignition, and using the arrow buttons on the left side of the steering wheel, select the Service option on the central display and confirm with Ok. In the next screen, select AdBlue to view the level and the estimated range.


Updated on 30 October 2026 by ScegliAuto


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