Catalytic Converter; Avoid Damaging The Vehicle - Audi Q5 2011 Owner's Manual

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Catalytic
converter
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
c::>
page 228,
Fuel supply.
.,. Never run the tank down all the way to emp-
ty.
.,. Never put too much motor oil in your engine
c::>
page 23 7, Adding engine oil
'l:::11.
.,. 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 catalytic converter burns
many of the pollutants in the exhaust gas be-
fore they are released into the atmosphere.
The exclusive 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
-
- 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
manifold, exhaust pipes, catalytic con-
verter or heat shields . During driving, the
substance used for undercoating could
overheat and cause a fire.
0
Note
- Be aware that just one tank filling with
leaded fuel will already seriously de-
grade the performance of the catalytic
converter.
- Do not exceed the correct engine oil level
c::>
page 237.
- Do not drive until the fuel tank becomes
completely empty. The eng ine could mis-
fire . Unburned fuel could a lso get into
Dri v in g and en v ir o nm e n t
207
the exhaust system and this cou ld cause
the catalytic converter to overheat .
- Do not turn off the ignition while the ve-
hicle is moving.
- Do not continue to operate your veh icle
under these conditions, as otherwise fuel
can reach the catalytic 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 your vehicle maintained properly
and in accordance w ith the serv ice rec-
ommendat ions in your Warranty &
Maintenance boo klet.
- 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 Emiss ion Control System is
operat ing properly, the exhaust gas can
have a sulfur-like exhaust gas smell under
some operating 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 .
Avoid
damaging
the
vehicle
When you are driving on poo r roads, or over
curbs, steep ramps, etc., make certain that
low-lying parts such as spoilers and exha ust
system pa rts do not bottom out and get dam-
aged.
Th is is espec ially true for veh icles with low-
slung chassis (sports chassis)* and fully load-
ed vehicles.

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