Kia Optima Hybrid 2017 Owner's Manual page 447

Driving your vehicle
Electronic stability control (ESC)
(if equipped)
OJF055023
The electronic stability control (ESC)
system is designed to stabilize the ve‐
hicle during cornering maneuvers. ESC
checks where you are steering and
where the vehicle is actually going. ESC
applies the brakes at individual wheels
and intervenes with engine manage‐
ment system to stabilize the vehicle.
7-30
WARNING
Never drive too fast for the road
conditions or too quickly when cor‐
nering. Electronic stability control
(ESC) will not prevent accidents. Ex‐
cessive speed in turns, abrupt ma‐
neuvers and hydroplaning on wet
surfaces can still result in serious ac‐
cidents. Only a safe and attentive
driver can prevent accidents by
avoiding maneuvers that cause the
vehicle to lose traction. Even with
ESC installed, always follow all the
normal precautions for driving - in‐
cluding driving at safe speed for the
conditions.
The electronic stability control (ESC)
system is an electronic system de‐
signed to help the driver maintain vehi‐
cle control under adverse conditions. It
is not a substitute for safe driving
practices. Factors including speed, road
conditions and driver steering input can
all affect whether ESC will be effective
in preventing a loss of control. It is still
your responsibility to drive and corner
at reasonable speed and to leave a suf‐
ficient margin of safety.
When you apply your brakes under
conditions which may lock the wheels,
you may hear a tik-tik'' sound from
the brakes, or feel a corresponding sen‐
sation in the brake pedal. This is normal
and it means your ESC is active.
NOTICE
A click sound may be heard in the
engine compartment when the vehi‐
cle begins to move after the engine
is started. These conditions are nor‐
mal and indicate that the electronic
stability control (ESC) system is
functioning properly.