Fuel and exhaust gas cleaning
●
When changing or adding engine oil, do not
Particulate filter
WARNING
exceed the necessary amount ››› page 276,
Checking and topping up the engine oil
level.
Always adjust your speed to suit the weather
conditions, roads, braking distance and traf-
fic if the particulate filter is in its regeneration
phase. Route recommendations should never
make you disregard each country's specific
trac regulations.
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 indication is
displayed to the driver:
●
Never tow the vehicle to start it, use jump
leads if necessary ››› page 252.
If you should notice misfiring, uneven running or
loss of power when the car is moving, have the
vehicle inspected by a specialised workshop.
In general, the emissions warning lamp will
light up when any of these symptoms occur. If
this happens, any unburnt fuel can enter the ex-
haust system and escape into the atmosphere.
The catalytic converter can also be damaged
by overheating.
NOTICE
Particulate filter: cleaned
while the vehicle is moving. See
Manual.
●
When the exhaust system detects that the
particulate filter is close to saturation, the
self-cleaning function of this system recom-
mends optimal driving for this function.
The particulate filter needs cleaning (regenera-
tion).
●
Due to the high temperatures caused by
the regeneration of the particulate filter, it is
possible that the radiator fan will activate af-
ter stopping the engine, even it its operating
temperature has not been reached.
Regeneration of the petrol particulate filter
NOTICE
Requirements for the regeneration journey: the
engine is at operating temperature.
Never run the fuel tank completely dry be-
cause an irregular fuel supply can cause ig-
nition faults. This allows unburnt fuel to enter
the exhaust system, which could cause over-
heating and damage the catalytic converter.
●
Drive at a speed of between 50120 km/h
●
Noise, smells and high idle speeds can oc-
(31-75 mph). This increases the temperature
cur during regeneration.
and burns the soot in the filter ››› page 248.
●
Always use the correct engine oil and the
●
Consider the legal speed limits as well as the
correct fuel to make sure the useful life of the
particulate filter is not aꢀected. Also avoid
making short trips all the time.
recommended gears.
For the sake of the environment
●
End the regeneration journey once the con-
trol warning lamp has gone out.
Even when the emission control system is
working 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.
If the warning lamp stays on after 30 minutes
of running in regeneration mode, have a speci-
alised workshop repair the fault.
Troubleshooting
Fault in the emission control system.
The indicator lamp lights up yellow.
248
English 
