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:
Cleaning the display
► Before cleaning the display, make sure
that
it is switched off and has cooled down.
► Clean the display surface using a
commercially-available microfiber cloth
and TFT/LCD display ...
Information for customers in
California
Under California law you may be entitled to a
replacement of your vehicle or a refund of the
purchase price or lease price, if after a
reasonable number of repair attempts
Mercedes-Benz USA, L ...
Direction of rotation
Tires with a specified direction of rotation have additional benefits, e.g. if
there is a risk of hydroplaning. You will only gain these benefits if the correct
direction of rotation is maintained ...