Protecting The Environment - Fiat 500 Owner's Handbook Manual

fig. 64
FUEL FILLER CAP fig. 64
The cap B is provided with a loss pre-
vention device C which secures it to the
lid A.
Unscrew cap B using the ignition key. The
airtight closing may determine a slight in-
crease of pressure in the tank. A suction
noise when you release the cap is there-
fore entirely normal. When refuelling, fas-
ten the cap to the device inside the lid as
shown in figure.
Do not approach naked
flames or lit cigarettes to the
fuel filler: fire risk. Keep your
face away from the fuel filler
to prevent breathing in harmful
vapours.
64
PROTECTING THE
ENVIRONMENT
The devices for curtailing petrol engine
emissions are the following:
❒ three-way catalytic converter;
❒ Lambda sensors;
❒ fuel evaporation prevention system.
F0S0104m
In addition, do not let the engine run, even
for a test, with one or more spark plugs
disconnected.
The devices for curtailing diesel fuel en-
gine emissions are the following:
❒ oxidising catalytic converter;
❒ exhaust gas recirculation system (E.G.R.).
❒ diesel particulate filter (DPF)
WARNING
The catalytic converter de-
velops high temperature dur-
ing operation. Do not park on grass,
dry leaves, pine needles or other flam-
mable material: fire risk .
DIESEL PARTICULATE
FILTER (DPF)
(for versions 1.3 Multijet 75 CV)
The Diesel Particulate Filter is a mechanical
filter, integral with the exhaust system, that
physically traps particulates present in the
exhaust gases of Diesel engines. The diesel
particular filter has been adopted to elimi-
nate almost totally particulates in compli-
ance with current / future law regulations.
During normal use of the car, the engine
control unit records a set of data (e.g.: trav-
el time, type of route, temperatures, etc.)
and it will then calculate the amount of par-
ticulates trapped by the filter. Since this fil-
ter physically traps particulates, it shall be
cleaned (reclaimed) at regular intervals by
burning carbon particles. The regeneration
procedure is controlled automatically by the
engine control unit according to the filter
conditions and the conditions of use of the
car. During the regeneration procedure, the
following situations may occur: limited in-
crease of idle speed, activation of electric
fan, limited increase of smoke, high tem-
peratures at the exhaust. These are not
anomalies; they do impair car behaviour and
the environment. If the dedicated message
is displayed, refer to section "Warning lights
and messages".