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Checking and refilling levels
Flashes
Fault in the diesel engine management.
Hav
e the engine checked as soon as possible by a
specialised workshop.
Note
While the control lamps , , or ar
e
on, there might be faults in the engine, fuel
consumption may go up and the engine
might lose power.
Catalytic converter
To maintain the useful life of the catalytic
conv
erter
●
Only use unleaded petrol with petrol en-
gines.
●
Never run the fuel tank dry.
●
When changing or adding engine oil, do not
exceed the necessary amount
›››
page 277,
Topping up the engine oil.
●
Never tow the vehicle to start it, use jump
leads if necessary
›››
page 49.
If you should notice misfiring, uneven running
or loss of power when the car is moving, have
the vehicle inspected by a specialised work-
shop. In general, the emissions warning lamp
will light up when any of these symptoms
occur. If this happens, any unburnt fuel can
enter the exhaust system and escape into the
atmosphere. The catalytic converter can also
be damaged by overheating.
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 and diesel par-
ticulate 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 legal speed limits as well as
the r
ecommended 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
»
271
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