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.
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:
Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
Drive with the headlamps switched on.
The level of moisture diminishes,
depending on the length of the journey and ...
Important safety notes
WARNING
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flames or smoking
materials near gasoline.
Turn off the engi ...
Cleaning the headliner and carpets
Roof lining: use soft brushes or dry
shampoo if it is particularly dirty.
Carpets: use carpet and textile cleaners
that have been approved and
recommended by Mercedes-Benz. ...