Kia Optima Hybrid 2017 Owner's Manual page 504

• The width of the lane is below 2.6 m
or over 4.5 m.
• ESC(Electronic Stability Control) and
VSM(Vehicle stability management)
are activated.
• When the system is on or after
changing a lane, drive in the middle of
the lane. If not, the system will not
provide the steering assist function.
• The steering will not be assisted
when you drive fast on a sharp curve.
• The steering will not be assisted
when you change lanes fast.
• The steering will not be assisted
when you brake suddenly.
Driver's attention
The driver must be cautious in the be‐
low situations for the system may not
assist the driver and may not work
properly.
• The lane is not visible due to snow,
rain, stain, a puddle or many other
things.
• The brightness of the outside
changes suddenly such as passing
through a tunnel.
• Not turning on the headlight or the
light is weak even at night or in a
tunnel.
• Difficult to distinguish the color of
the lane marker from the road.
• Driving on a steep grade or a curve.
• Light reflects from the water on the
road such as sunlight, streetlight or
the light of oncoming vehicles.
• The lens or windshield is stained with
foreign matter.
• The surrounding of the inside rear
view mirror temperature is high due
to direct light.
• The lane is very wide or narrow.
• The lane marker is damaged or indis‐
tinct.
• The shadow is on the lane marker by
a median strip.
• There is a mark similar to a lane
marker.
• There is a boundary structure.
• The distance from vehicle ahead is
very short or the vehicle ahead drives
hiding the lane marker.
• The vehicle shakes heavily.
• The lane number increases or decrea‐
ses or the lane marker are crossing
complicatedly.
• Placing something on the dashboard.
• Driving with the sun in front of you.
• Driving in areas under construction.
• The lane marker is more than two.
• The lane marker in a tunnel is hard to
distinguish due to dust or grease.
• The lane marker is hard to distinguish
after raining at night.
• The lane marker is hard to distinguish
due to dust.
• MDPS (motor driven power steering)
is not operational.
• Some objects are attached in steering
wheel.
• The windshield is fogged by humid air
in the vehicle.
• The distance from the vehicle ahead
is very short or the vehicle ahead
drives covering the lane line.
• The lane line is merged or divided.
• Driving through a toll plaza or toll
gate.
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