Purity

Assuring the purity of DEF is particularly important with respect to avoiding malfunctions in the exhaust gas aftertreatment system.

If DEF is pumped out of the DEF tank, e.g. during repair work, it must not be returned to the tank. The purity of the fluid can no longer be guaranteed.

service products, cleaning agents or dust) Impurities in DEF (e.g. due to other service products, cleaning agents or dust) lead to:
• increased emission values
• damage to the catalytic converter
• engine damage
• malfunctions in the BlueTEC exhaust gas aftertreatment system

    See also:

    Engine number
    Emission control information plate, including the certification of both federal and Californian emissions standards Engine number (stamped into the crankcase) VIN (on the lower edge of the ...

    Emergency call
    Important safety notes A license agreement must exist in order to activate the mbrace service. Ensure that your system is activated and ready for use, and press the MB Info call button ...

    DVD menu
    Note You will find further information on the DVD menu in the "Video" section. To call up the DVD menu Press the button on the remote control and show the menu. Select Video DVD ...