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Practical tips
It lights up
Diesel engine preheating system.
The engine can be started straight away when the
l
amp switches off.
Flashes
Fault in the diesel engine management.
Have the engine checked as soon as possible by a
specialised workshop
.
Note
While the control lamps , , or are
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
er
t
er
●
Only use unl
eaded petr
ol with petrol en-
gines.
●
Never run the fuel tank dry.
●
When changing or adding engine oil, do not
exceed the necessary amount
›››
page 336,
Topping up the engine oil.
●
Never tow the vehicle to start it, use jump
leads if necessary
›››
page 47.
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 irregular fuel supply can cause
ignition faults. This allo
ws 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
working perfectly, there may be a smell of
sulphur from the gases on occasions. This
depends on the sulphur cont
ent of the fuel
used. This can quite often be avoided by
changing to another brand of fuel.
Particulate filter
3 Valid for: vehicles with petrol or diesel particu-
late filt
ers
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
bl
ocked 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-
ulate 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
er
at
or pedal f
or a f
ew 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.
330
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