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:

    Making adjustments in 1 mph (Canada:

    1 km/h) increments
    Briefly press the cruise control lever to the pressure point, up 1 for a higher speed or down 2 for a lower speed. The last speed stored is increased or reduced. ...

    Engine
    Display messages Possible causes/consequences and Solutions The coolant level is too low. Add coolant, observing the warning notes when doing so. If coolant nee ...

    Adjusting the seats
    1 Head restraint height 2 Seat height 3 Seat cushion angle 4 Seat cushion length 5 Seat fore-and-aft adjustment 6 Backrest angle If PRE-SAFE® has been activated, the front-passeng ...