Volvo 2008 C70 - Manual (Page 121)

06 Starting and driving
120
Diesel particle filter (DPF)
06
Diesel particle filter (DPF) 1
Diesel cars may be equipped with a particle
filter, which results in more efficient emission
control. The particles in the exhaust gases
are collected in the filter during normal driv-
ing. So-called "regeneration" is started in
order to burn away the particles and empty
the filter. This requires the engine to have
reached normal operating temperature.
Regeneration of the filter takes place auto-
matically at an interval of 300 – 900 km
depending on driving conditions. Regenera-
tion normally takes between 10 and
20 minutes. During this time fuel consump-
tion may increase slightly.
The rear window heating may be activated
automatically to increase the load on the
engine during regeneration without warning.
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, the yellow information
symbol on the dashboard illuminates, and
the message
SOOT FILTER FULL SEE
OWNER MANUAL is shown on the dash-
board 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 message
is cleared automatically.
Use the parking heater (option) in cold
weather so that the engine reaches normal
operating temperature more quickly.
1 Certain markets.
IMPORTANT
If the filter fills up it may be incapable of
functioning. Then it can be difficult to start
the engine and there is a risk that the filter
will have to be replaced.