2016 KIA Optima Hybrid engine

H13
Service plug
This service plug (1) located in the
rear trunk as shown should always
be pulled out to disconnect and turn
off the hybrid system.
IMPORTANT: Wait 5 minutes after
this lever is disconnected to work
on the car. This ensures that all
remaining electrical charge in the
system is dissipated.
Some Special Characteristics
of the Hybrid Vehicle.
Hybrid vehicles sound different than
gasoline engine vehicles. When the
hybrid system operates, you may
hear a sound from the hybrid battery
system behind the rear seat. If you
apply the accelerator pedal rapidly,
you may hear a sound. when you
apply the brake pedal, you may hear
a sound from the regenerative brake
system. When the hybrid system is
turned off or on, you may hear a
sound in the engine compartment. If
you depress the brake pedal repeat-
edly when the hybrid system is
turned on, you may hear a sound in
the engine compartment. None of
these sounds indicate a problem.
They are normal characteristics of
hybrid vehicles.
When the hybrid system is turned
on, the engine may or may not start
immediately. This does not indicate a
malfunction. If the "READY" symbol
is on, the hybrid system is operating.
Even if the gasoline engine is off, you
can operate the vehicle.
OTFH063020
WARNING - Safety plug
Never touch the safety plug. The
safety plug is attached to high
voltage hybrid battery system.
Touching safety plug can result
in death or serious injury.
Service personnel should follow
procedure in service manual.
WARNING - Interference
with electronic medical
devices
Electromagnetic waves that are
generated from the charger can
impact medical electric devices
such as an implantable cardiac
pacemaker.
When using such medical elec-
tric devices, ask your medical
professional and the device
manufacturer whether charging
your electric vehicle will impact
the operation of the medical
electric devices.

H14The HEV system may emit electro-
magnetic waves which can affect the
performance of electronic devices,
such as laptop computers.
If you park the vehicle for a long time,
the hybrid system will discharge. The
vehicle should be driven at least
once per month to maintain a
charge.
When you start the hybrid system in
the "P" transmission position, the
"READY" symbol is illuminated in the
cluster. The driver can drive the vehi-
cle even if the engine is stopped.
Virtual Engine Sound
System(VESS)
The Virtual Engine Sound System
generates an engine sound for
pedestrians to hear the vehicle while
at low speeds in EV mode.
WARNING - Turning off
HEV system
When you leave the vehicle, turn
off the hybrid system. If you
leave the hybrid system on, you
or another vehicle occupant
could depress the accelerator
pedal and, if it is in a position
other than Park, the vehicle will
begin accelerating. This may
result in an accident causing
serious injury or death.
THE COMPONENTS OF HYBRID VEHICLE (CONT.)

H16
If An Accident Occurs
Avoid the engine compartment.
Avoid any orange or high voltagewires, cables, or components.
Assume that a high voltage com- ponent is exposed and move away
from the vehicle as promptly as
possible.
Refer to Chapter 6 for towing infor- mation or call Kia Roadside
Assistance.
If a vehicle accident occurs:
1.Stop the vehicle and shift the trans-mission into "P" position.
And then depress the parking
brake.
2.Turn off the Hybrid system by pushing the Engine Start/Stop
Button.
3.Evacuate to the safe place.
4.Call emergency services for help and let them know the vehicle is a
Hybrid vehicle.
If a fire occurs:
1.Stop the vehicle and shift the trans-mission in to "P" position, and then
depress the parking brake. To ven-
tilate smoke from a fire, open the
windows if possible.
2.Turn off the Hybrid system by pushing the Engine Start/Stop
Button.
3.Leave the vehicle and evacuate to the safety place.
4.Call emergency services for help and let them know the vehicle is a
Hybrid vehicle.
If an immersion in water occurs:
If your vehicle was flooded and has
soaked carpeting or water on the
flooring, you should not try to start
the Hybrid system. Have the car
towed to an authorized Kia dealer.
THE COMPONENTS OF HYBRID VEHICLE (CONT.)

I3
Index
BSD (Blind Spot Detection) /LCA (Lane Change Assist) . . . . . . . . . . . . . . . . . . 5-37
Non-operating condition . . . . . . . . . . . . . . . . . . . . . 5-41
RCTA (Rear cross traffic alert) . . . . . . . . . . . . . . . . 5-39
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31\
Checking the brake fluid level . . . . . . . . . . . . . . . . . 7-31
Brake system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17 Anti-lock brake system (ABS) . . . . . . . . . . . . . . . . . 5-21
Electronic stability control (ESC) . . . . . . . . . . . . . . 5-23
Good braking practices . . . . . . . . . . . . . . . . . . . . . . 5-29
Hill-start assist control (HAC) . . . . . . . . . . . . . . . . . 5-27
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Power brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
Vehicle stability management (VSM) . . . . . . . . . . . 5-27
Bulb wattage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Child restraint system . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28 Lower anchor system . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Tether anchorage system . . . . . . . . . . . . . . . . . . . . . 3-32
Using a child restraint system . . . . . . . . . . . . . . . . . 3-29
Climate control air filter . . . . . . . . . . . . . . . . . . . . . . . . 7-36 Filter inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Filter replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 7-27 Changing the coolant . . . . . . . . . . . . . . . . . . . . . . . . 7-30
Engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27 Inverter coolant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
Cruise Control system . . . . . . . . . . . . . . . . . . . . . . . . . 5-31 To cancel cruise control . . . . . . . . . . . . . . . . . . . . . . 5-33
To decrease the cruising speed . . . . . . . . . . . . . . . . . 5-32
To increase cruise control set speed . . . . . . . . . . . . . 5-32
To resume cruising speed at more than approximately25 mph (40 km/h) . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
To set cruise control speed . . . . . . . . . . . . . . . . . . . . 5-31
To temporarily accelerate with the cruise control on . . 5-33
To turn cruise control off . . . . . . . . . . . . . . . . . . . . . 5-34
Defroster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
4-99 Rear window defroster . . . . . . . . . . . . . . . . . . . . . . . 4-99
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-\
2
Door locks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
14 Auto door lock/unlock feature . . . . . . . . . . . . . . . . . 4-16
Child-protector rear door lock . . . . . . . . . . . . . . . . . 4-16
Impact sensing door unlock system . . . . . . . . . . . . . 4-16
Operating door locks from inside the vehicle . . . . . 4-14
Operating door locks from outside the vehicle . . . . 4-14
Driver position memory system . . . . . . . . . . . . . . . . . . 4-35 Easy access function . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Storing positions into memory . . . . . . . . . . . . . . . . . 4-35
C
D

Index
4I
Economical operation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43
Emergency starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5Jump starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Push-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Emission control system . . . . . . . . . . . . . . . . . . . . . . . . 7-89
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 8-2
Engine compartment. . . . . . . . . . . . . . . . . . . . . . . . . 2-6,7-3
Engine number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-\
25 Changing the engine oil and filter . . . . . . . . . . . . . . 7-26
Checking the engine oil level . . . . . . . . . . . . . . . . . . 7-25
Engine start/stop button . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 ENGINE START/STOP button position . . . . . . . . . . 5-6
Illuminated ENGINE START/STOP button . . . . . . . 5-6
Explanation of scheduled maintenance items . . . . . . . 7-21
Exterior overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Fuel filler lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28 Closing the fuel filler lid . . . . . . . . . . . . . . . . . . . . . 4-28
Emergency fuel filler lid release . . . . . . . . . . . . . . . 4-30
Opening the fuel filler lid. . . . . . . . . . . . . . . . . . . . . 4-28
Fuel requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Do not use methanol . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Gasoline containing alcohol and methanol . . . . . . . . 1-2
Gasoline containing MMT . . . . . . . . . . . . . . . . . . . . . 1-3
Operation in foreign countries . . . . . . . . . . . . . . . . . . 1-4
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 7-57 Fuse/relay panel description. . . . . . . . . . . . . . . . . . . 7-62
Gross vehicle weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
HEV powertrain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 4-26 Closing the hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Opening the hood . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Hybrid Kia Hybrid system . . . . . . . . . . . . . . . . . . . . . . . . . . . H2
State of charge (SOC) . . . . . . . . . . . . . . . . . . . . . . . . H3
Optima HEV energy flow . . . . . . . . . . . . . . . . . . . . . . H4
The componets of hybrid vehicle . . . . . . . . . . . . . . . . H9
The air intake of hybrid battery . . . . . . . . . . . . . . . . H15
The ECO level display mode . . . . . . . . . . . . . . . . . . . H2
The EV MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-77
The ECO GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49
E
F
G
H

I5
Index
If the engine overheats . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
If the engine will not start . . . . . . . . . . . . . . . . . . . . . . . 6-4If 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 (with Spare Tire) . . . . . . . . . . . . . 6-8 Changing tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Jack and tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Removing and storing the spare tire . . . . . . . . . . . . . 6-9
Use of temporary compact spare tire . . . . . . . . . . . . 6-14
If you have a flat tire (with Tire Mobility Kit). . . . . . . 6-17 Checking the tire inflation pressure . . . . . . . . . . . . . 6-21
Components of the Tire Mobility Kit . . . . . . . . . . . 6-19
Distributing the sealant . . . . . . . . . . . . . . . . . . . . . . 6-21
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Notes on the safe use of the Tire Mobility Kit . . . . 6-18
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
Using the Tire Mobility Kit . . . . . . . . . . . . . . . . . . . 6-20
In case of an emergency while driving . . . . . . . . . . . . . . 6-3 If engine stalls while driving . . . . . . . . . . . . . . . . . . . 6-3
If the engine stalls at a crossroad or crossing . . . . . . 6-3
If you have a flat tire while driving . . . . . . . . . . . . . . 6-3
Instrument cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45 Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
47
Instrument Cluster Control. . . . . . . . . . . . . . . . . . . . 4-46
LCD Display Control . . . . . . . . . . . . . . . . . . . . . . . . 4-46
Transaxle Shift Indicator . . . . . . . . . . . . . . . . . . . . . 4-50 Instrument panel overview . . . . . . . . . . . . . . . . . . . . . . . 2-5
Interior features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-120
Clothes hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-122
Cup holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-120
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-122
Floor mat anchor(s) . . . . . . . . . . . . . . . . . . . . . . . . 4-123
Navigation system . . . . . . . . . . . . . . . . . . . . . . . . . 4-123
Power outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-121
Sunvisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-120
Interior light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-95 Automatic turn off function . . . . . . . . . . . . . . . . . . . 4-95
Glove box lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-98
Map lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-95
Room lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-96
Trunk room lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-97
Vanity mirror lamp . . . . . . . . . . . . . . . . . . . . . . . . . . 4-98
Interior overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51 Hybrid information modes . . . . . . . . . . . . . . . . . . . . 4-52
LCD Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51
Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
User Settings Mode . . . . . . . . . . . . . . . . . . . . . . . . . 4-56
Warning Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 4-59
Light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-70\
Front light replacement . . . . . . . . . . . . . . . . . . . . . . 7-70
I
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