Kia Soul 2018 Owner's Manual page 650

Diesel Particulate Filter
(Type B, 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
other words, the active burning by
engine control system and high
exhaust gas temperature caused by
normal/high driving 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.
More than a certain amount of soot
deposited, the malfunction indicator
light ( ) illuminates.
When the malfunction indicator light
blinks, it may stop blinking by driving
the vehicle at more than 60 km/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 be blinked or the warn-
ing massage "Check exhaust sys-
tem" illuminates in spite of the proce-
dure, visit a professional workshop
and check the DPF system. Kia rec-
ommends to visit an authorised Kia
dealer/service partner.
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.
CAUTION -
Diesel Fuel
(if equipped with DPF)
It is recommended to use the
regulated automotive diesel fuel
for diesel vehicle equipped with
the DPF system.
If you use diesel fuel including
high sulfur (more than 50 ppm
sulfur) and unspecified addi-
tives, it can cause the DPF sys-
tem to be damaged and white
smoke can be emitted.
Maintenance
Lean NOx Trap (if equipped)
)
The Lean NOx Trap (LNT) system
removes the nitrogen oxide in the
exhaust gas. The smell can occur in
the exhaust gas depending on the
quality of the fuel and it can degrade
NOx reduction performance, please
use the regulated automotive diesel
fuel.
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