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:

    Adjusting the seats
    Vehicles without Memory function: the seats can be adjusted within three minutes of a front door being opened. The time period starts over again if, within these three minutes, you: • open or ...

    Starting procedure with the SmartKey
    To start the engine using the SmartKey instead of KEYLESS-GO, pull the Start/ Stop button out of the ignition lock. •►  To start a gasoline engine: turn the SmartKey to position 3 in ...

    Telescopic rod
    The telescopic rod can be used to secure the load against the rear seats to prevent it from moving around. ► Insert one mounting element 2 into each loading rail. ► Turn mounting el ...