Bedienungsanleitung Seat Leon 2024 (Seite 313 von 406) (Englisch)

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Fuel and exhaust gas cleaning

311

Engine management and emissions control system

1) Except 2.0l and 2.5l TSI petrol engines.

WARNING

Do not apply wax underneath the vehicle

around the area of the exhaust system: Fire

hazard!

Catalytic converter

To maintain the useful life of the catalytic

converter

● 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335,

Checking and topping up the engine oil

level.

●Never tow the vehicle to start it, use jump

leads if necessary ›››page315.

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

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.

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 content of the fuel

used. This can quite often be avoided by

changing to another brand of fuel.

Particulate ﬁlter

Valid 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 indication is

displayed to the driver:

Particulate filter: cleaned

while the vehicle is moving. See

Manual.

The particulate ﬁlter needs cleaning (regenera-

tion).

Regeneration of the petrol and diesel partic-

ulate ﬁlter1)

Requirements for the regeneration journey: the

engine is at operating temperature.

●Drive at a speed of between 50120 km/h

(31-75mph). This increases the temperature

and burns the soot in the ﬁlter ›››page312.

●Consider the legal 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 speci-

alised workshop repair the fault.

Regeneration of the particulate ﬁlter (only

for 2.0l and 2.5l TSI engines)

Requirements for the regeneration journey: the

engine is at operating temperature.

● Drive at a speed of at least 80 km/h

›››page312.

●Completely remove your foot from the accel-

erator pedal for a few seconds to let the vehicle

roll with the gear engaged.

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