2018 KIA OPTIMA HYBRID engine

Features of your vehicle
126
4
Air conditioning system operation tips
If the vehicle has been parked in
direct sunlight during hot weather,
open the windows for a short time
to let the hot air inside the vehicle
escape.
To help reduce moisture inside of the windows on rainy or humid
days, decrease the humidity inside
the vehicle by operating the air
conditioning system.
During air conditioning system operation, you may occasionally
notice a slight change in engine
speed as the air conditioning com-
pressor cycles. This is a normal
system operation characteristic.
Use the air conditioning system every month only for a few minutes
to ensure maximum system per-
formance. When using the air conditioning
system, you may notice clear water
dripping (or even puddling) on the
ground under the passenger side
of the vehicle. This is a normal sys-
tem operation characteristic.
Operating the air conditioning sys- tem in the recirculated air position
provides maximum cooling, how-
ever, continual operation in this
mode may cause the air inside the
vehicle to become stale.
During cooling operation, you may occasionally notice a misty air flow
because of rapid cooling and
humid air intake. This is a normal
system operation characteristic.CAUTION - Excessive A/C
Use
When using the air conditioningsystem, monitor the tempera-ture gauge closely while drivingup hills or in heavy traffic whenoutside temperatures are high.Air conditioning system opera-tion may cause engine over-heating. Continue to use theblower fan but turn the air con-ditioning system off if the tem-perature gauge indicates engineoverheating.
CAUTION
When opening the windows inhumid weather, air conditioningmay create water dropletsinside the vehicle. Since exces-sive water droplets may causedamage to electrical equipment,air conditioning should only beused with the windows closed.

Features of your vehicle
138
4
* The actual sunvisor lamp in the vehi-
cle may differ from the illustration.Power outlet (if equipped)
The power outlet is designed to pro-
vide power for mobile telephones or
other devices designed to operate
with vehicle electrical systems. The
devices should draw less than 10
amps with the engine running. Use the power outlet only when the
engine is running and remove the
accessory plug after use. Using the
accessory plug for prolonged peri-
ods of time with the engine off
could cause the battery to dis-
charge.
Only use 12V electric accessories which are less than 10A in electric
capacity.
Adjust the air-conditioner or heater to the lowest operating level when
using the power outlet.
Close the cover when not in use.
Some electronic devices can cause electronic interference when
plugged into a vehicle’s power out-
let. These devices may cause
excessive audio static and malfunc-
tions in other electronic systems or
devices used in your vehicle.
Push the plug in as far as it will go. If good contact is not made, the
plug may overheat and the fuse
may open.
CAUTION- Vanity mirror
lamp
If you use the vanity mirrorlamp, turn off the lamp beforereturning the sunvisor to itsoriginal position, otherwise itcould result in battery dis-charge and possible sunvisordamage.
OJFA045122
OJFA045338
■ Front seat
■Rear seat

4139
Features of your vehicle
Plug in battery equipped electronicdevices with reverse current pro-
tection. The current from the bat-
tery may flow into the vehicle’s
electri cal/electronic system and
cause system malfunction.USB charger (if equipped)
The USB charger is designed to
recharge batteries of small size elec-
trical devices using a USB cable. The
electrical devices can be recharged
when the Engine Start/Stop button is
in ACC/ON/START position. The battery charging state may be
monitored on the electrical device.
Disconnect the USB cable from the
USB port after use.
Some devices are not supported
for fast charging but will be
charged with normal speed.
Use the USB charger when the engine is running to prevent bat-
tery discharge.
Only devices that fit the USB port can be used.
The USB charger can be used only for battery charging purposes.
Battery chargers cannot be charged.
WARNING - Electric shock
Do not put a finger or a foreign
element (pen, etc.) into a power
outlet and do not touch with a
wet hand. You may receive an
electric shock.
OJFA045337
OJF045229L
■ Front seat
■Rear seat

Driving your vehicle
Before driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
• Before entering vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
. . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Engine start/stop button . . . . . . . . . . . . . . . . . . . . . 6-6
. . . . . . . . . . . . . 6-6
button position. . . . . . . . . . . . . . . . . 6-6
. . . . . . . . . . . . . . . . . . . . . . 6-8
Automatic transaxle . . . . . . . . . . . . . . . . . . . . . . . . 6-11
. . . . . . . . . . . . . . . . . . 6-11
. . . . . . . . . . . . . . . . . . . . . . . . 6-17
Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
. . . . . . . . . . . . . . . . . . . . . 6-20
. . . . . . . . . . . . . . . . 6-21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
. . . . . . . . . . . . . . . . . . 6-32
. . . . . . . . . . . . . . . 6-34
. . . . . . . . . . . . 6-38
. . . . . . . . . . . . . . . . . . 6-39

Autonomous emergency braking (AEB) / Forward collision warning (FCW) . . . . . . . . . . . 6-41
. . . . . . . . . . . . . . . . . . . 6-41 . . . . . . . . 6-44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-45

(front radar). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-46
. . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47
. . . . . . . . . . . . . . . . . . . . . . . 6-48
. . . . . . . . . . . . . . . . . . . . . . . 6-51
Cruise control system. . . . . . . . . . . . . . . . . . . . . . . 6-52
. . . . . . . . . . . . . . . . . . . . 6-53
. . . . . . . . . . . . . 6-53
. . . . . . . . . . . . . . . . . 6-54
. . 6-54
do one of the following: . . 6-54
approximately 20 mph (30 km/h): . . . . . . . . . . . . . . 6-55
do one of the following: . 6-55
Advanced smart cruise control system (ASCC) . 6-56
. . . . . . . . . . . . . . . . . . . . . . . . . 6-57
. . . . . . . . 6-62
Advanced Smart Cruise Control . . . . . . . . . . . . . . 6-66
. . . . . . . . . . . . . . 6-67
. . . . . . . . . . . . . . . . . . . . . . 6-68
Drive mode integrated control system . . . . . . . . . 6-73
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-73
6

63
Driving your vehicle
Be sure the exhaust system does
not leak.
The exhaust system should be
checked whenever the vehicle is
raised to change the oil or for any
other purpose. If you hear a change in
the sound of the exhaust or if you drive
over something that strikes the under-
neath side of the vehicle, have the
exhaust system checked as soon as
possible by an authorized Kia dealer.
WARNING- Engineexhaust
Do not inhale exhaust fumes or
leave your engine running in a
enclosed area for a prolonged
time. Exhaust fumes contain
carbon monoxide, a colorless,
odorless gas that can cause
unconsciousness and death by
asphyxiation.
WARNING- Open trunk
Do not drive with the trunk open.
Poisonous exhaust gases can
enter the passenger compart-
ment. If you must drive with the
trunk open proceed as follows:
1. Close all windows.
2. Open side vents.
3. Set the air intake control at "Fresh", the air flow control at
"Floor" or "Face" and the fan
at the highest speed.WARNING - CALIFORNIA
PROPOSITION 65
Engine exhaust and a wide vari-
ety of automobile components
and parts, including compo-
nents found in the interior fur-
nishings in a vehicle, contain or
emit chemicals known to the
State of California to cause can-
cer and birth defects and repro-
ductive harm. In addition, cer-
tain fluids contained in vehicles
and certain products of compo-
nent wear contain or emit chem-
icals known to the State of
California to cause cancer and
birth defects or other reproduc-
tive harm.

Driving your vehicle
46
Before entering vehicle
• Be sure that all windows, outsidemirror(s), and outside lights are
clean.
Check the condition of the tires.
Check under the vehicle for any sign of leaks.
Be sure there are no obstacles behind you if you intend to back up.
Necessary inspections
Fluid levels, such as engine oil,
engine coolant, brake fluid, and
washer fluid should be checked on a
regular basis, at the exact interval
depending on the fluid. Further
details are provided in chapter 8,
“Maintenance”.
Before starting
Close and lock all doors.
Position the seat so that all con-trols are easily reached.
Buckle your seat belt.
Adjust the inside and outside rearview mirrors.
Be sure that all lights work.
Check all gauges.
Check the operation of warning lights when the engine start/stop
button is turned to the ON position.
Release the parking brake and make sure the brake warning light
goes out.
For safe operation, be sure you are
familiar with your vehicle and its
equipment.
BEFORE DRIVING
WARNING - Distracted driving
Focus on the road while driving.
The driver's primary responsi-
bility is in the safe and legal
operation of the vehicle. Use of
any handled devices, other
equipment or vehicle systems
that distract the drive should
not be used during vehicle
operation.

65
Driving your vehicle
WARNING- Check sur-roundings
Always check the surrounding
areas near your vehicle for peo-
ple, especially children, before
putting a vehicle into D (Drive)
or R (Reverse).
WARNING- Fire risk
When you intend to park or stop
the vehicle with the engine on,
be careful not to depress the
accelerator pedal for a long
period of time. It may overheat
the engine or exhaust system
and cause fire.WARNING- Loose objects
Securely store items in your
vehicle. When you make a sud-
den stop or turn the steering
wheel rapidly, loose objects
may drop on the floor and it
could interfere with the opera-
tion of the foot pedals, possibly
causing an accident.WARNING- Driving while intoxicated
Do not drive while intoxicated.
Drinking and driving is danger-
ous. Even a small amount of
alcohol will affect your reflexes,
perceptions and judgment.
Driving while under the influ-
ence of drugs is as dangerous
as or more dangerous than driv-
ing drunk.

Driving your vehicle
66
Illuminated ENGINE
START/STOP button
Whenever the front door is opened,
the ENGINE START/STOP button
will illuminate for your convenience.
The light will go off after about 30
seconds when the door is closed.
When all entrances are closed, if you
lock the vehicle by using the trans-
mitter or the smart key, the light will
go off immediately.
ENGINE START/STOP button
position
OFF
To turn off the hybrid system
(START/RUN position) or vehicle
power (ON position), press the
ENGINE START/STOP button with
the shift lever in the P (Park) position.
When you press the ENGINE
START/STOP button without the shift
lever in the P (Park) position, the
ENGINE START/STOP button will
not change to the OFF position but to
the ACC position.In an emergency situation while the
vehicle is in motion, you are able to
turn the hybrid system off and to the
ACC position by pressing the
ENGINE START/STOP button for
more than 2 seconds or 3 times suc-
cessively within 3 seconds. If the
vehicle is still moving, you can restart
the hybrid system without depress-
ing the brake pedal by pressing the
ENGINE START/STOP button with
the shift lever in the N (Neutral) posi-
tion.
ENGINE START/STOP BUTTON
OJFH055004
Not illuminated