Catalytic Converter; Diesel Particulate Filter - Audi A8 2015 Owner's Manual

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206
Dr iv ing and e n v ir onm e nt
Catalytic
converter
Appl ies to vehicles: with gasoline engin e
It is very important that your emission con-
trol system (catalytic converter) is function-
ing properly to ensure that your vehicle is run-
ning in an environmentally sound manner .
.. Always use lead-free gasoline
i=>
page 220,
Fuel supply .
.. Never run the tank down all the way to emp-
ty .
.. Never put too much motor oil in your engine
¢
page 234, Adding engine oil <t=r. .
.. Never try to push- or tow-start your veh icle.
The catalytic converter is an eff icient "clean-
up" device built into the exhaust system of
the vehicle. The catalyti c converter burns
many of the pollutants in the exhaust gas be-
fore they are released into the atmosphere.
The exclus ive use of unleaded fuel is critically
important for the life of the cata lytic convert-
e r and proper functioning of the engine.
A
WARNING
The temperature
of the exhaust system is
high, both when driving and after stopping
the engine .
- Never touch the exhaust tail pipes once
they have become hot. This could result
in burns.
- Do not park or operate the vehicle in
areas where the hot exhaust system may
come in contact with dry grass, brush,
fuel spill or other material which can
cause a fire.
- Do not apply additional undercoating or
rustproofing on or near the exhaust
man ifold, exhaust pipes, catalytic con-
verter or heat shields . During driving, the
substance used for undercoating cou ld
overheat and cause a fire.
@)
Note
- Be aware that just one tank f illing with
leaded fuel will al ready seriously de-
grade the perfo rmance of the cata lytic
conve rter.
- Do not exceed the correct engine oil level
i=>page 234.
- Do not drive until the fue l tank becomes
completely empty . The engine could mis-
fire . Unburned fuel could also get into
the exhaust system and this cou ld cause
the catalytic converter to overheat.
- Do not switch off the ignition while the
vehicle is mov ing .
- Do not continue to ope rate your vehicle
under these conditions, as otherwise fuel
can reach the catalyt ic converter. This
cou ld result in overheating of the con-
verter, requir ing its replacement .
- To assure efficient operation of the Emis-
sion Control System:
- Have you r vehicle maintained properly
and in accordance w ith t he service rec-
ommendations
in your Warranty &
Maintenance book let.
- Lack of prope r maintenance as we ll as
improper use of the vehicle will impair
the function of the em ission contro l
system and could lead to damage.
@)
For the sake of the environment
Even when the Emission Control System is
ope rat ing properly, the exhaust gas can
have a sulfur-like exhaust gas smell under
some operat ing states. This depends on
the sulfur content of the fuel being used .
Using a different brand of fuel may help,
or f illing the tank with lead-free super
grade gasoline.
Diesel
particulate
filter
Applies to vehicles: with diesel engine
The diesel part iculate filter filters nearly all of
the soot pa rticles out of the exhaust . The fil-
te r cleans itself automat ically unde r no rma l
dr iving cond itions . If the filte r cannot clean it-
self (for example, because you are on ly driving
short distances), the filter becomes clogged
with soot and the
Cl
symbol for the diese l
particulate filter illuminates
i=>
page 21.
..,.

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