2015 KIA Optima check engine

Maintenance
84
7
Ty p e B
If the light bulb does not operate,
have the vehicle checked by an
authorized Kia dealer.
Front fog light
1.Turn off the engine.
2.Remove the under cover by rotat-
ing the screws.
3.Reach your hand into the back of the front bumper.
4.Disconnect the power connector.
5.Remove the bulb-socket from the housing by turning the socket
counter clockwise until the tabs on
the socket align with the slots on
the housing.
CAUTION
When you remove the siderepeater cover, be careful not todamage the side repeater coverand vehicle surface.
OTF074067NOTF070048N

Maintenance
86
7
Ty p e B
If the light (LED) does not operate,
have the vehicle checked by an
authorized Kia dealer.
Stop and tail light / Rear turn sig-
nal light
1.Turn off the engine.
2.Open the trunk.
3.Open the service cover. 4.Remove the socket from the
assembly by turning the socket
counterclockwise until the tabs on
the socket align with the slots on
the assembly.
5.Remove the bulb from the socket by pressing it in and rotating it
counterclockwise until the tabs on
the bulb align with the slots in the
socket. Pull the bulb out of the
socket.
6.Insert a new bulb by inserting it into the socket and rotating it until it
locks into place.
7.Install the socket in the assembly by aligning the tabs on the socket
with the slots in the assembly.
Push the socket into the assembly
and turn the socket clockwise.
8.Install the service cover by pulling it into the service hole.
OTF070031
OTF070032
Stop and tail light / Rear turn signal light

Maintenance
100
7
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in
the canister are drawn into the surge
tank through the purge control sole-
noid valve.
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve is
controlled by the Engine Control
Module (ECM); when the engine
coolant temperature is low during
idling, the PCSV closes so that evap-
orated fuel is not taken into the
engine. After the engine warms up
during ordinary driving, the PCSV
opens to introduce evaporated fuel to
the engine.
3. Exhaust emission control system
The Exhaust Emission Control
System is a highly effective system
which controls exhaust emissions
while maintaining good vehicle per-
formance.
Vehicle modifications
This vehicle should not be modified.
Modification of your vehicle could
affect its performance, safety or
durability and may even violate gov-
ernmental safety and emissions reg-
ulations.
In addition, damage or performance
problems resulting from any modifi-
cation may not be covered under
warranty.
If you use unauthorized electronic
devices, it may cause the vehicle to
operate abnormally, wire damage,
battery discharge and fire. For your
safety, do not use unauthorized
electronic devices.
Engine exhaust gas precautions
(carbon monoxide)
Carbon monoxide can be present with other exhaust fumes.
Therefore, if you smell exhaust
fumes of any kind inside your vehi-
cle, have it inspected and repaired
immediately. If you ever suspect
exhaust fumes are coming into
your vehicle, drive it only with all
the windows fully open. Have your
vehicle checked and repaired
immediately.
WARNING - Exhaust
Engine exhaust gases contain
carbon monoxide (CO). Though
colorless and odorless, it is
dangerous and could be lethal if
inhaled. Follow the instructions
on this page to avoid CO poi-
soning.

88
Specifications & Consumer information
Recommended SAE viscosity
number
Always be sure to clean the area
around any filler plug, drain plug, or
dipstick before checking or draining
any lubricant. This is especially
important in dusty or sandy areas
and when the vehicle is used on
unpaved roads. Cleaning the plug
and dipstick areas will prevent dirt
and grit from entering the engine and
other mechanisms that could be
damaged.Engine oil viscosity (thickness) has
an effect on fuel economy and cold
weather operation (engine start and
engine oil flowability). Lower viscosi-
ty engine oils can provide better fuel
economy and cold weather perform-
ance, however, higher viscosity
engine oils are required for satisfac-
tory lubrication in hot weather.
Using oils of any viscosity other than
those recommended could result in
engine damage.
When choosing an oil, consider the
range of temperature your vehicle will
be operated in before the next oil
change. Proceed to select the recom-
mended oil viscosity from the chart.
Temperature Range for SAE Viscosity Numbers
Temperature
Engine Oil
(2.4 GDI) *
1
Engine Oil
(2.0 T-GDI)
°C
(°F)-30 -20 -10 0 10 20 30 40 50 -10 0 20 40 60 80 100 120
10W-30
5W-20, 5W-30
*1. For better fuel economy, it is recommended to use the engine oil of
a viscosity grade SAE 5W-20 (API SM / ILSAC GF-4). However, if
the engine oil is not available in your country, select the proper
engine oil using the engine oil viscosity chart.
20W-50
10W-30
15W-40
5W-30, 5W-40

I3
Index
Checking the brake fluid level . . . . . . . . . . . . . . . . . 7-34
Brake system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20 Anti-lock brake system (ABS) . . . . . . . . . . . . . . . . . 5-24
Electronic stability control (ESC) . . . . . . . . . . . . . . 5-26
Good braking practices . . . . . . . . . . . . . . . . . . . . . . 5-32
Hill-start assist control (HAC) . . . . . . . . . . . . . . . . . 5-30
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Power brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Vehicle stability management (VSM) . . . . . . . . . . . 5-31
Bulb wattage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Child restraint system . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29 Lower anchor system . . . . . . . . . . . . . . . . . . . . . . . . 3-34
Tether anchorage system . . . . . . . . . . . . . . . . . . . . . 3-33
Using a child restraint system . . . . . . . . . . . . . . . . . 3-30
Climate control air filter . . . . . . . . . . . . . . . . . . . . . . . . 7-39 Filter inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39
Filter replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39
Cruise control system . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34 To cancel cruise control, do one of the following . . 5-36
To decrease the cruising speed . . . . . . . . . . . . . . . . . 5-35
To increase cruise control set speed . . . . . . . . . . . . . 5-35
To set cruise control speed . . . . . . . . . . . . . . . . . . . . 5-34
To temporarily accelerate with the cruise control on. . 5-36
To turn cruise control off, do one of the following. . 5-37 Defroster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11\
2
Rear window defroster . . . . . . . . . . . . . . . . . . . . . . 4-112
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-\
2
Door locks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
18 Auto door lock/unlock feature . . . . . . . . . . . . . . . . . 4-20
Child-protector rear door lock . . . . . . . . . . . . . . . . . 4-21
Impact sensing door unlock system . . . . . . . . . . . . . 4-20
Operating door locks from inside the vehicle . . . . . 4-18
Operating door locks from outside the vehicle . . . . 4-18
Drive mode integrated control system . . . . . . . . . . . . . 5-39 Drive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39
Driver position memory system . . . . . . . . . . . . . . . . . . 4-40 Easy access function . . . . . . . . . . . . . . . . . . . . . . . . 4-41
Storing positions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
Economical operation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-49
Emergency starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5 Jump starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Push-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Emission control system . . . . . . . . . . . . . . . . . . . . . . . . 7-99
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 8-2
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . 2-6, 7-3
Engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31 Changing the coolant . . . . . . . . . . . . . . . . . . . . . . . . 7-33
C
D
E

Index
4I
Checking the coolant level . . . . . . . . . . . . . . . . . . . . 7-31
Engine number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-\
29 Changing the engine oil and filter . . . . . . . . . . . . . . 7-30
Checking the engine oil level . . . . . . . . . . . . . . . . . . 7-29
Engine start/stop button . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 Engine start/stop button position . . . . . . . . . . . . . . . . 5-8
Illuminated engine start/stop button. . . . . . . . . . . . . . 5-8
Explanation of scheduled maintenance items . . . . . . . 7-25
Exterior overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Fuel filler lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32 Closing the fuel filler lid . . . . . . . . . . . . . . . . . . . . . 4-32
Emergency fuel filler lid release . . . . . . . . . . . . . . . 4-34
Opening the fuel filler lid. . . . . . . . . . . . . . . . . . . . . 4-32
Fuel requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Do not use methanol . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Gasoline containing alcohol and methanol . . . . . . . . 1-3
Gasoline containing MMT . . . . . . . . . . . . . . . . . . . . . 1-4
Operation in foreign countries . . . . . . . . . . . . . . . . . . 1-5
Use of MTBE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 7-61 Fuse/relay panel description. . . . . . . . . . . . . . . . . . . 7-66 Gross vehicle weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 4-30
Closing the hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Opening the hood . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
How to use this manual . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
If the engine overheats . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
If the engine will not start . . . . . . . . . . . . . . . . . . . . . . . 6-4 If engine doesn’t turn over or turns over slowly . . . . 6-4
If engine turns over normally but does not start . . . . 6-4
If you have a flat tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9 Changing tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Jack and tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Removing and storing the spare tire . . . . . . . . . . . . 6-10
Use of temporary compact spare tire . . . . . . . . . . . . 6-14
If you have a flat tire (with Tire Mobility Kit). . . . . . . 6-17 Components of the Tire Mobility Kit . . . . . . . . . . . 6-19
Distributing the sealant . . . . . . . . . . . . . . . . . . . . . . 6-21
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Notes on the safe use of the Tire Mobility Kit . . . . 6-18
Producing the tire inflation pressure . . . . . . . . . . . . 6-21
F
G
H
I

I7
Index
Seat warmer (rear) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Seat warmer (front) . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Seatback pocket . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
3-18 Care of seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Pre-tensioner seat belt . . . . . . . . . . . . . . . . . . . . . . . 3-24
Seat belt precautions . . . . . . . . . . . . . . . . . . . . . . . . 3-26
Seat belt restraint system . . . . . . . . . . . . . . . . . . . . . 3-18
Smart key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
4-6 Smart key functions . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Smart key precautions . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Special driving conditions . . . . . . . . . . . . . . . . . . . . . . 5-51 Driving at night . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52
Driving in flooded areas. . . . . . . . . . . . . . . . . . . . . . 5-53
Driving in the rain . . . . . . . . . . . . . . . . . . . . . . . . . . 5-53
Driving off-road . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-54
Hazardous driving conditions . . . . . . . . . . . . . . . . . 5-51
Highway driving. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-54
Rocking the vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 5-51
Smooth cornering . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52
Starting the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 Starting the engine with a smart key . . . . . . . . . . . . 5-12
Starting the engine with an ignition key . . . . . . . . . 5-11
Steering wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42 Electric power steering. . . . . . . . . . . . . . . . . . . . . . . 4-42
Heated steering wheel . . . . . . . . . . . . . . . . . . . . . . . 4-44
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 4-43
Tilt and telescoping steering . . . . . . . . . . . . . . . . . . 4-43 Storage compartment . . . . . . . . . . . . . . . . . . . . . . . . . 4-139
Center console storage . . . . . . . . . . . . . . . . . . . . . . 4-139
Cool box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-140
Glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-139
Sunglass holder . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-140
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 4-35 Closing the sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Resetting the sunroof . . . . . . . . . . . . . . . . . . . . . . . . 4-39
Sliding the sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Sunshade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38\
Tilting the sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Theft-alarm system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15 Armed stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Disarmed stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Theft-alarm stage . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Tire specification and pressure label . . . . . . . . . . . . . . 8-10
Tires and wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Tires and wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-47 Checking tire inflation pressure . . . . . . . . . . . . . . . . 7-48
Recommended cold tire inflation pressures . . . . . . . 7-47
Tire care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-47\
Tire maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52
Tire replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51
Tire rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49
Tire sidewall labeling . . . . . . . . . . . . . . . . . . . . . . . . 7-52
T