engine KIA Optima 2015 4.G Repair Manual

Features of your vehicle
112
4
DEFROSTER
If you want to defrost and defog the
front windshield, refer to “Windshield
Defrosting and Defogging” in this
chapter.
Rear window defroster
The defroster heats the window to
remove frost, fog and thin ice from
the interior and exterior of the rear
window, while the engine is running.
To activate the rear window
defroster, press the rear window
defroster button located in the center
facia switch panel. The indicator on
the rear window defroster button illu-
minates when the defroster is on.
If there is heavy accumulation of
snow on the rear window, brush it off
before operating the rear defroster. The rear window defroster automati-
cally turns off after approximately 20
minutes or when the ignition switch is
turned off. To turn off the defroster
manually, press the rear window
defroster button again.
Outside mirror defroster
(if equipped)
If your vehicle is equipped with the
outside rearview mirror defrosters,
they will operate at the same time you
turn on the rear window defroster.
Wiper deicer (if equipped)
If your vehicle is equipped with the
wiper deicer, it will operate at the
same time you turn on the rear win-
dow defroster.
CAUTION - Conductors
To prevent damage to the con-ductors bonded to the insidesurface of the rear window,never use sharp instruments orwindow cleaners containingabrasives to clean the window.
OTF044114L

Features of your vehicle
114
4
Heating and air conditioning
1. Start the engine.
2. Set the mode to the desired posi-
tion.
To improve the effectiveness ofheating and cooling :
- Heating:
- Cooling:
3. Set the temperature control to the desired position.
4. Set the air intake control to the outside (fresh) air or recirculated
air position.
5. Set the fan speed control to the desired speed.
6. If air conditioning is desired, turn the air conditioning system (if
equipped) on.
OTF044314

4119
Features of your vehicle
System operation
Ventilation
1. Set the mode to the position.
2. Set the air intake control to theoutside (fresh) air position.
3. Set the temperature control to the desired position.
4. Set the fan speed control to the desired speed.
Heating
1. Set the mode to the position.
2. Set the air intake control to theoutside (fresh) air position.
3. Set the temperature control to the desired position.
4. Set the fan speed control to the desired speed.
5. If dehumidified heating is desired, turn the air conditioning system (if
equipped) on.
If the windshield fogs up, set the mode to the , position. Operation Tips
To prevent dust or unpleasant
fumes from entering the vehicle
through the ventilation system,
temporarily set the air intake con-
trol to the recirculated air position.
Be sure to return the control to the
fresh air position when the irritation
has passed to keep fresh air in the
vehicle. This will help keep the driv-
er alert and comfortable.
Air for the heating/cooling system is drawn in through the grilles just
ahead of the windshield. Care
should be taken that these are not
blocked by leaves, snow, ice or
other obstructions.
To prevent interior fog on the wind- shield, set the air intake control to
the fresh air position and fan speed
to the desired position, turn on the
air conditioning system, and adjust
the temperature control to desired
temperature.
Air conditioning (if equipped)
Kia Air Conditioning Systems are
filled with R-134a refrigerant.
1. Start the engine. Push the air con- ditioning button.
2. Set the mode to the position.
3. Set the air intake control to the recirculated air position. However,
prolonged operation in the recircu-
lated air position will excessively
dry the air. In this case, change the
air position.
4. Adjust the fan speed control and temperature control to maintain
maximum comfort.
When maximum cooling is desired, set the temperature control to the
extreme left position, set the mode
control to the MAX A/C position,
then set the fan speed control to
the highest speed.

Features of your vehicle
120
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
AC
While 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 and potential enginedamage. If the temperaturegauge indicates overheating,turn off the a/c, safely stop thevehicle, turn off the engine andcontact your authorized Kiadealer.

Features of your vehicle
124
4
✽
✽
NOTICE
Never place anything over the sen-
sor located on the instrument panel
to ensure better control of the heat-
ing and cooling system.
Manual heating and air condi-
tioning
The heating and cooling system can
be controlled manually by pushing
buttons other than the AUTO button.
In this case, the system works
sequentially according to the order of
buttons selected.
1. Start the engine.
2. Set the mode to the desired posi-
tion.
To improve the effectiveness ofheating and cooling :
- Heating:
- Cooling:
3. Set the temperature control to the desired position.
4. Set the air intake control to the outside (fresh) air or recirculated
air position.
5. Set the fan speed control to the desired speed.
6. If air conditioning is desired, turn the air conditioning system on.
Press the AUTO button in order to
convert to full automatic control of
the system.
Mode selection
The mode selection button controls
the direction of the air flow through
the ventilation system.
Every time you press the mode
selection button, the mode will
change as follows:
Refer to the illustration in the
“Manual climate control system”.
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4131
Features of your vehicle
Air conditioning
Kia Air Conditioning Systems are
filled with environmentally friendly R-
134a refrigerant.
1. Start the engine. Press the air con-ditioning button.
2. Set the mode to the position.
3. Set the air intake control to the outside air or recirculated air posi-
tion.
4. Adjust the fan speed control and temperature control to maintain
maximum comfort.
When maximum cooling is desired, set the temperature control to the
extreme left position, then set the
fan speed control to the highest
speed.
✽ ✽ NOTICE
• When using the air conditioning
system, monitor the temperature
gauge closely while driving up
hills or in heavy traffic when out-
side temperatures are high. Air
conditioning system operation
may cause engine overheating.
Continue to use the blower fan but
turn the air conditioning system
off if the temperature gauge indi-
cates engine overheating.
• When opening the windows in humid weather air conditioning
may create water droplets inside
the vehicle. Since excessive water
droplets may cause damage to
electrical equipment, air condi-
tioning should only be used with
the windows closed.
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.

4143
Features of your vehicle
Sunvisor
Use the sunvisor to shield direct light
through the front or side windows.
To use the sunvisor, pull it downward.
To use the sunvisor for the side win-
dow, pull it downward, unsnap it from
the bracket (1) and swing it to the
side (2).
Adjust the sunvisor extension for-
ward or backward (3).
To use the vanity mirror, pull down the
visor and slide the mirror cover (4).
The ticket holder (5) is provided for
holding a tollgate ticket (if equipped).
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 periods
of time with the engine off could
cause the battery to discharge.
OVG049174
CAUTION - Vanity mirror
lamp
Close the vanity mirror coversecurely and return the sunvi-sor to its original position afteruse. If the vanity mirror is notclosed securely, the lamp willstay on and could result in bat-tery discharge and possiblesunvisor damage.
* : if equipped
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Features of your vehicle
156
4
USING THE USB DEVICE
To use an external USB device,
make sure the device is not con-
nected when starting up the
vehicle. Connect the device after
starting up.
If you start the engine when the USB device is connected, it may
damage the USB device. (USB
flashdrives are very sensitive to
electric shock.)
If the engine is started up or turned off while the external USB
device is connected, the external
USB device may not work.
The System may not play unau- thenticated MP3 or WMA files.
1) It can only play MP3 files with the compression rate
between 8Kbps ~ 320Kbps.
2) It can only play WMA music files with the compression
rate between 8Kbps ~
320Kbps.
Take precautions for static elec- tricity when connecting or discon-
necting the external USB device.
(Continued)(Continued)
An encrypted MP3 PLAYER is
not recognizable.
Depending on the condition of the external USB device, the
connected external USB device
can be unrecognizable.
When the formatted byte/sector setting of External USB device is
not either 512BYTE or
2048BYTE, then the device will
not be recognized.
Use only a USB device format- ted to FAT 12/16/32.
USB devices without USB I/F authentication may not be recog-
nizable.
Make sure the USB connection terminal does not come in con-
tact with the human body or
other objects.
If you repeatedly connect or dis- connect the USB device in a
short period of time, it may break
the device.
(Continued)(Continued)
You may hear a strange noise
when connecting or disconnect-
ing a USB device.
If you disconnect the external USB device during playback in
USB mode, the external USB
device can be damaged or may
malfunction. Therefore, discon-
nect the external USB device
when the audio is turned off or in
another mode. (e.g, Radio, CD)
Depending on the type and capacity of the external USB
device or the type of the files
stored in the device, there is a
difference in the time for recogni-
tion the device.
Do not use the USB device for purposes other than playing
music files.
Playing videos through the USB is not supported.
Use of USB accessories such as rechargers or heaters using USB
I/F may lower performance or
cause trouble.
(Continued)

Driving your vehicle
Before driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
• Before entering vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
. . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Key positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
. . . . . . . . . . . . . . . . . . . . . . 5-6
. . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Engine start/stop button . . . . . . . . . . . . . . . . . . . . . 5-8
. . . . . . . . . . . . . . 5-8

Starting the engine . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
. . . . . . . . . . 5-11
. . . . . . . . . . . . 5-12
Automatic transaxle . . . . . . . . . . . . . . . . . . . . . . . . 5-14
. . . . . . . . . . . . . . . . . . 5-14
. . . . . . . . . . . . . . . . . . . . . . . . 5-19
Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
. . . . . . . . . . . . . . . . . . 5-24
. . . . . . . . . . . . . . . 5-26
. . . . . . . . . . . . . . . . . . 5-30
. . . . . . . . . . . . 5-31

Cruise control system. . . . . . . . . . . . . . . . . . . . . . . 5-34
. . . . . . . . . . . . . . . . . . . . . 5-34

. . . . . . . . . . . . . . . . . . 5-35
control on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36\
do one of the following . . . 5-36
approximately 25 mph (40 km/h) . . . . . . . . . . . . . . 5-37
do one of the following . . . 5-37
Active ECO system. . . . . . . . . . . . . . . . . . . . . . . . . 5-38
. . . . . . . . . . . . . . . . . . . . . . . . . 5-38
. . . . . . . . . . . . . . . . . . 5-38
. . . . . . . . . . . . . 5-38
Drive mode integrated control system . . . . . . . . . 5-39
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39\
Blind spot detection system (BSD) . . . . . . . . . . . . 5-41
LCA (Lane Change Assist) . . . . . . . . . . . . . . . . . . . . 5-42
. . . . . . . . . . . . . . . . . 5-45
. . . . . . . . . . . . . . . . . . . . . . . 5-47
Economical operation . . . . . . . . . . . . . . . . . . . . . . 5-49
Special driving conditions . . . . . . . . . . . . . . . . . . . 5-51
. . . . . . . . . . . . . . . . . . 5-51
. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-51
5

53
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
underneath 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 an
enclosed area for a prolonged
time.
Exhaust fumes contain carbon
monoxide, a colorless, odorless
gas that can cause uncon-
sciousness 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.