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03 Your driving environment
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Starting the engine
03
Diesel particle filter (DPF)
Diesel cars are equipped with a particle filter,
which results in more efficient emission con-
trol. The particles in the exhaust gases are
collected in the filter during normal driving.
So-called "regeneration" is started in order to
burn away the particles and empty the filter.
This requires the engine to have reached nor-
mal operating temperature.
Regeneration of the filter takes place auto-
matically at an interval of approximately
300–900 km depending on driving condi-
tions. Regeneration normally takes between
10 and 20 minutes. During this time fuel con-
sumption may increase slightly.
Regeneration in cold weather
If the car is frequently driven short distances
in cold weather then the engine does not
reach normal operating temperature. This
means that regeneration of the diesel particle
filter does not take place and the filter is not
emptied.
When the filter has become approximately
80% full of particles, a yellow warning trian-
gle illuminates on the dashboard, and a mes-
sage is shown,
Soot filter full. See manual is
shown on the dashboard display.
Start regeneration of the filter by driving the
car until the engine reaches normal operating
temperature, preferably on a main road or
motorway. The car should then be driven for
approximately 20 minutes more.
When regeneration is complete the warning
text is cleared automatically.
Use the parking heater* in cold weather so
that the engine reaches normal operating
temperature more quickly.
IMPORTANT
If the filter fills up with particles then it can
be difficult to start the engine and the filter
will be incapable of functioning. Then there
is a risk that the filter will have to be re-
placed.