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:
Digital speedometer
Press the or
button on the steering wheel to
select the Trip menu.
Press or
to select the digital speedometer.
...
Cleaning the wheels
WARNING
Do not use power washers with circular-jet nozzles (dirt grinders) to clean your
vehicle, in particular the tires. You could otherwise damage the tires and cause
an accident. ...
Restoring the factory settings
Press the
and
buttons simultaneously for
approximately six seconds until the battery check lamp flashes twice. ...