2009 Mercedes R-Class Owner's Manual - Page 407

Technical data Fuels, coolants, lubricants etc. Do not blend other fuel additives with fuel. This only results in unnecessary cost and may be harmful to the engine operation. High ambient temperatures If AdBlue® in the reservoir heats up to above 122‡ (50†) for a long period of time, for example due to direct sunlight, ammonia gas vapors may escape when opening the AdBlue® tank. Special additives ! Only use AdBlue® complying with ISO 22241. Do not add additives to AdBlue® and do not dilute AdBlue® with water. Otherwise, the BlueTEC exhaust gas aftertreatment system could be damaged. Damage caused by using additives or diluting with water are not covered by the Mercedes-Benz Limited Warranty. Purity The purity of AdBlue® is of particular importance for avoiding malfunctions in the exhaust gas aftertreatment. If AdBlue® is pumped out of the tank, e.g. during repair work, the same liquid must not be used to refill the tank as its purity is no longer guaranteed. ! Damage or malfunction resulting from poor fuel quality or from blending additional fuel additives other than those tested and approved by us for use on Mercedes-Benz vehicles are not covered by the MercedesBenz Limited Warranty or by any pre-owned or Extended Limited warranties. AdBlue® AdBlue® is a non-flammable, non-toxic, colorless and odorless, water-soluble liquid. ! Only use AdBlue® complying with ISO 22241. Do not blend with additives. ! Rinse surfaces that have come into contact with AdBlue®, or remove AdBlue® with a moist cloth and cold water immediately. If AdBlue® has crystallized already, use cold water and a sponge. AdBlue® residues will crystallize and soil the affected surfaces. G Warning! When opening the filler cap of the AdBlue® tank ammonia gas vapors may escape. Refill AdBlue® in a well ventilated area only. Ammonia gas vapors have a pungent odor and are particularly irritating for your skin, mucous membranes, and eyes. Inhaling ammonia gas vapors will cause burning eyes, nose, and throat, as well as coughing and watering eyes. Low ambient temperatures AdBlue® freezes at a temperature of approximately 12‡ (-11†). Your vehicle is factory equipped with an AdBlue® preheating system. The vehicle can thus be operated at temperatures below 12‡ (-11†). ! Impurities caused for example by other service products, cleaning agents, and dust result in increased emissions, malfunctions, catalyst damage, or engine damage. Z 405