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:
Important safety notes
WARNING
When opening or closing the door windows, make sure there is no danger of anyone
being harmed by the opening/closing procedure.
The door windows are equipped with the express operatio ...
Tread wear
The tread wear grade is a comparative rating based on the wear rate of the tire
when tested under controlled conditions on a specified U.S. government course. For
example, a tire graded 150 would ...
Mounting a new wheel
WARNING
Always replace wheel bolts that are damaged
or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive un ...