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:
System self-test
After you have switched on the ignition, the
system carries out a self-diagnosis.
WARNING
A malfunction in the system has been
detected if one of the following conditions
occurs:
- the indic ...
Transmission positions
Park position
Do not shift the transmission into
position P unless the vehicle is
stationary. The parking lock should
not be used as a brake when
parking. In addition to engaging the
parki ...
Washing by hand
Carefully remove all deposits of road salt as
soon as possible when driving in winter.
Also, clean the insides of the wheels when
washing the underbody of the vehicle.
Do not use hot water and ...