Hyundai Tucson 2020 Owner's Manual page 623

Diesel particulate filter (DPF)
(if equipped)
The Diesel Particulate Filter (DPF)
system removes the soot in the
exhaust gas. Unlike a disposable air
filter, the DPF system automatically
burns (oxidizes) and removes the
accumulated soot according to the
driving condition. In order words, the
active burning by the engine control
system and high exhaust gas tem-
perature caused by normal/high
speed diving condition burns and
removes the accumulated soot.
However, if the vehicle continues to
be driven at repeated short distance
or driven at low speed for a long time,
the accumulated soot may not be
automatically removed because of
low exhaust gas temperature. If more
than a certain amount of soot
deposited, the malfunction indicator
light( ) illuminates.
When the malfunction indicator light
illuminates, it may turn-off after driv-
ing the vehicle at more than 60km/h
(37 mph) or at more than second
gear with 1500~2500 engine rpm for
a certain time (for about 25 minutes).
If the malfunction indicator light (
continues to blink or the warning mes-
sage "Check exhaust system" illumi-
nates in spite of the procedure, visit a
professional workshop and check the
DPF system. HUNDAI recommends to
visit an authorised HYUNDAI dealer.
If you continue to drive with the mal-
function indicator light blinking for a
long time, the DPF system can be
damaged and fuel consumption can
be worsen and the engine durability
can be worsen by oil dilution.
)
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 is high in sulfurs (above
50 ppm) or contains unspecified
additives, it may damage the
DPF system and cause the white
smoke emission.
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