Kia Optima Hybrid 2017 Owner's Manual page 450

The ESC indicator light blinks whenever
ESC is operating or illuminates when
ESC fails to operate.
ESC OFF indicator light comes on when
the ESC is turned off with the button.
CAUTION
Driving with varying tire or wheel
sizes may cause the ESC system to
malfunction. When replacing tires,
make sure they are the same size as
your original tires.
WARNING
The Electronic Stability Control sys‐
tem is only a driving aid; use precau‐
tions for safe driving by slowing
down on curved, snowy, or icy roads.
Drive slowly and don't attempt to
accelerate whenever the ESC indica‐
tor light is blinking, or when the road
surface is slippery.
ESC OFF usage
When driving
• ESC should be turned on for daily
driving whenever possible.
• To turn ESC off while driving, press
the ESC OFF button while driving on a
flat road surface.
WARNING
Never press the ESC OFF button
while ESC is operating (ESC indicator
light blinks).
If ESC is turned off while ESC is op‐
erating, the vehicle may slip out of
control.
NOTICE
• When operating the vehicle on a
dynamometer, ensure that the
ESC is turned off by pressing the
ESC OFF button for more than 3
seconds (ESC OFF light illumina‐
ted). If the ESC is left on, it may
prevent the vehicle speed from in‐
creasing, and result in false diag‐
nosis.
• Turning the ESC off does not af‐
fect ABS or brake system opera‐
tion.
Vehicle stability management
(VSM) (if equipped)
This system provides further enhance‐
ments to vehicle stability and steering
responses when a vehicle is driving on a
slippery road or a vehicle detected
changes in coefficient of friction be‐
tween right wheels and left wheels
when braking.
VSM operation
When the VSM is in operation,
• ESC (Electronic Stability Control) ( )
light will blink.
• The steering wheel may be control‐
led.
When the vehicle stability management
is operating properly, you can feel a
slight pulsation in the vehicle. This is
only the effect of brake control and in‐
dicates nothing unusual.
The VSM does not operate when:
• Driving on bank road such as gradient
or incline
• Driving rearward
• ESC OFF indicator light ( ) remains
on the instrument cluster
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