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:
Selecting a main function
Initial situation
You would like to change from the telephone
menu to the vehicle settings, for example.
Slide the COMAND controller
and
switch to the main function bar.
Select Vehicle i ...
Opening/closing automatically fromthe inside
WARNING
Maintain sight of the area around the rear of
the vehicle while operating the tailgate with
the door-mounted remote tailgate switch.
Monitor the opening procedure carefully to
...
Switching traffic reports on/off
To switch on: set the route type to
Dynamic Route.
To switch off: select the Fast Route or
Short Route route type.
COMAND calculates a new route if you
change the route type setting with ro ...