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Practical tips
atmosphere. The catalytic converter can also
be damaged by o
verheating.
CAUTION
Never run the fuel tank completely dry be-
cause an irr
egular fuel supply can cause
ignition faults. This allows unburnt fuel to
enter the exhaust system, which could
cause overheating and damage the cata-
lytic converter.
For the sake of the environment
Even when the emission control system is
w
orking perfectly, there may be a smell of
sulphur from the gases on occasions. This
depends on the sulphur content of the fuel
used. This can quite often be avoided by
changing to another brand of fuel.
Particulate filter
3 V
alid for: vehicles with petrol or diesel particu-
late filters
The particulate filter eliminates most of the
soot from the exhaust gas system. Under nor-
mal driving conditions the filter cleans itself. If
the filter does not clean itself (e.g. if short
journeys are made continuously), it becomes
blocked with soot and the following indica-
tion is displayed to the driver: Particu-
late filter: cleaned while the vehi-
cle is moving. See Manual. The partic-
ul
ate filter needs cleaning (regeneration).
Regeneration of the petrol particulate fil-
ter (only for 2.0l TSI engines)
Requirements for the regeneration journey:
the engine is at operating temperature.
●
Drive at a speed of at least 80 km/h
›››
●
Completely remove your foot from the ac-
cel
erator pedal for a few seconds to let the
vehicle roll with the gear engaged.
●
Consider the legal speed limits as well as
the recommended gears.
●
Repeat this procedure (accelerate and let
roll) until the control lamp turns off.
This procedure involves an autonomous par-
ticulate filter cleaning process and may take
some time.
If the warning lamp does not turn off, go im-
mediately to a specialised workshop to repair
the fault.
Regeneration of the petrol (except the TSI
2.0l engine) and diesel particulate filter
Requirements for the regeneration journey:
the engine is at operating temperature.
●
Drive at a speed of between 50-120 km/h
(31-75 mph). This increases the temperature
and burns the soot in the filter
›››
.
●
Consider the l
egal speed limits as well as
the recommended gears.
●
End the regeneration journey once the con-
trol warning lamp has gone out.
If the warning lamp stays on after 30 minutes
of running in regeneration mode, have a spe-
cialised workshop repair the fault
WARNING
Always adjust your speed to suit the weath-
er conditions, r
oads, braking distance and
traffic if the particulate filter is in its regen-
eration phase. Route recommendations
should never make you disregard each
country's specific traffic regulations.
CAUTION
●
When the e
xhaust system detects that
the particulate filter is close to saturation,
the self-cleaning function of this system
recommends optimal driving for this func-
tion.
●
Due to the high temperatures caused by
the regeneration of the particulate filter, it
is possible that the radiator fan will acti-
vate after stopping the engine, even it its
operating temperature has not been
reached.
●
Noise, smells and high idle speeds can
occur during regeneration.
●
Always use the correct engine oil and the
correct fuel to make sure the useful life of
336
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