This warning light illuminates :
Hyundai Sonata LF 2014-2019 Service Manual: Spark Plug Description and Operation
Description
A spark plug is a device for delivering electric current from
an ignition system to the combustion chamber of a spark-ignition engine
to ignite the compressed fuel/air mixture therein by means of an
electric spark, while containing combustion pressure within the engine. A
spar ...
Hyundai Sonata LF 2014-2019 Owners Manual: Limitations of the System
The driver must be cautious in the below situations may not work properly when
:
It is difficult to distinguish the lane marker from road when the lane marker
is covered with dust.
It is difficult to distinguish the color of the lane marker from road.
There is something looks like a lane mark ...