Hyundai LX2 Owner's Manual page 584

Diesel particulate filter (DPF)
(if equipped)
The Diesel Particulate Filter (DPF)
system removes the soot in the
exhaust gas.
The DPF system automatically burns
(or oxidizes) the accumulated soot in
accordance with driving situations,
unlike a disposable air filter.
In other words, the accumulated soot
is automatically purged out by the
engine control system and by the
high exhaust-gas temperature at nor-
mal/ high driving speeds.
However, when the vehicle is continu-
ally driven at repeated short distances
or driven at low speed for a long time,
the accumulated soot may not be
automatically removed because of
low exhaust gas temperature.
In this case, the accumulated soot is
out of the detection range, the soot
oxidization process does not occur,
and the Diesel Particulate Filter (DPF)
Lamp ( ) Illuminates.
The Diesel Particulate Filter (DPF)
Lamp stops illuminating, when the driv-
ing speed exceeds 60 km/h (37 mph),
or when the engine rpm is between
1,500 and 2,500 with the gear in the
2nd position or above for approximate-
ly 25 minutes.
When the DPF Lamp continuously
blinks or the warning message "Check
exhaust system" illuminates in the
above cases, we recommend that you
have the DPF system checked by an
authorized HYUNDAI dealer.
When the vehicle is continuously driv-
en with the DPF Lamp flashing for an
extended period of time, it may dam-
age the DPF system and lower the
fuel economy.
CAUTION
Diesel Fuel
(if equipped with DPF)
We recommend you to use only
the regulated diesel fuels, when
your vehicle is equipped with
the DPF system.
When you use other diesel fuels,
which are high in sulfurs (above
50 ppm) or that contain unspeci-
fied additives, they may damage
the DPF system and cause white
smoke emissions.
Lean NOx Trap (if equipped)
The Lean NOx Trap (LNT) system
removes the nitrogen oxide from the
exhaust gas. A smell can occur in the
exhaust gas depending on the quali-
ty of the fuel, and it can degrade NOx
reduction performance. Please use
the regulated automotive diesel fuel.
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