Kia Optima Hybrid 2017 Owner's Manual page 451

Driving your vehicle
• EPS (Electronic Power Steering) indi‐
cator light remains on the instrument
cluster
VSM operation off
If you press the ESC OFF button to turn
off the ESC, the VSM will also cancel
and the ESC OFF indicator light ( ) illu‐
minates.
To turn on the VSM, press the button
again. The ESC OFF indicator light goes
out.
Malfunction indicator
The VSM can be deactivated even if you
don't cancel the VSM operation by
pressing the ESC OFF button. It indi‐
cates that a malfunction has been de‐
tected somewhere in the EPS (Elec‐
tronic Power Steering) system or VSM
system. If the ESC indicator light ( ) or
EPS warning light remains on, we rec‐
ommend that the system be checked
by an authorized Kia dealer.
NOTICE
• The VSM is designed to function
above approximately 22
(13 mph) on curves.
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7-34
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• The VSM is designed to function
above approximately
(6 mph) when a vehicle is braking
on a split-mu road. The split-mu
road is made of surfaces which
have different friction forces.
WARNING
• The Vehicle Stability Management
system is not a substitute for safe
driving practices but a supplemen‐
tary function only. It is the respon‐
sibility of the driver to always
check the speed and the distance
to the vehicle ahead. Always hold
the steering wheel firmly while
driving.
• Your vehicle is designed to activate
according to the driver's intention,
even with the VSM installed. Al‐
ways follow all the normal precau‐
tions for driving at safe speed for
the conditions – including driving in
inclement weather and on a slip‐
pery road.
km/h
(Continued)
(Continued)
• Driving with varying tire or wheel
sizes may cause the VSM system
10 km/h
to malfunction. When replacing
tires, make sure they are the
same size as your original tires.
Hill-start assist control (HAC) (if
equipped)
A vehicle has the tendency to slip back
on a steep hill when it starts to go af‐
ter stopping. The Hill-start Assist Con‐
trol (HAC) prevents the vehicle from
slipping back by operating the brakes
automatically for about 1~2 seconds.
The brakes are released when the ac‐
celerator pedal is depressed or after
about 1~2 seconds.
WARNING
The HAC is activated only for about
1~2 seconds, so when the vehicle is
starting off always depress the ac‐
celerator pedal.