Kia CERATO 2018, Owner'S Manual, Page: 556 / 602

• Do not misuse or abuse the engine.
Examples of misuse are coasting with
the ignition off and descending steep
grades in gear with the ignition off.
• Do not operate the engine at high idle
speed for extended periods (5 mi‐
nutes or more).
• Do not modify or tamper with any
part of the engine or emission control
system. All inspections and adjust‐
ments must be made by a professio‐
nal workshop. Kia recommends to
visit an authorized Kia dealer/service
center.
• Avoid driving with an extremely low
fuel level. Running out of fuel could
cause the engine to misfire, damag‐
ing the catalytic converter.
Failure to observe these precautions
could result in damage to the catalytic
converter and to your vehicle. Addition‐
ally, such actions could void your war‐
ranties.
Diesel Particulate Filter (if
equipped)
The Diesel Particulate Filter (DPF) sys‐
tem removes the soot in the exhaust
gas.
Unlike a disposable air filter, the DPF
system automatically burns (oxidizes)
and removes the accumulated soot ac‐
cording 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 repea‐
ted short distance or driven at low
speed for a long time, the accumulated
soot may not be automatically re‐
moved because of low exhaust gas
temperature. More than a certain
amount of soot deposited, the mal‐
function 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 cer‐
tain time (for about 25 minutes). If the
malfunction indicator light ( ) contin‐
ues to be blinked or the warning mas‐
sage Check exhaust system illumi‐
nates in spite of the procedure, visit a
professional workshop and check the
DPF system. Kia recommends to visit
an authorized Kia dealer/service part‐
ner.
If you continue to drive with the mal‐
function indicator light blinking for a
long time, the DPF system can be dam‐
aged and fuel consumption can be wor‐
sen.
CAUTION
n Diesel Fuel (if equipped with
DPF)
It is recommended to use the regula‐
ted automotive diesel fuel for diesel
vehicle equipped with the DPF sys‐
tem.
If you use diesel fuel including high
sulfur (more than 50 ppm sulfur)
and unspecified additives, it can
cause the DPF system to be dam‐
aged and white smoke can be emit‐
ted.
Lean NOx Trap (if equipped)
The Lean NOx Trap (LNT) system re‐
moves the nitrogen oxide in the ex‐
haust gas. The smell can occur in the
exhaust gas depending on the quality
of the fuel and it can degrade NOx re‐
duction performance, please use the
regulated automotive diesel fuel
Maintenance
8-98