2017 KIA OPTIMA PLUG-IN HYBRID engine

1
Changing plug-in hybrid mode
Pressing the HEV button changes
the plug-in hybrid system modes, as
below.
• Shortly pressed:EV mode ↔HEV mode Plug-in hybrid mode indicator

: The high-voltage(hybrid) battery is
used to drive the
vehicle.
: The high-voltage(hybrid) batteryand gasolineengine is used to
drive the vehicle.
A corresponding message is displayed
to indicate the selected mode. Warning and indicator lights
Ready Indicator
This indicator illuminates :
When the vehicle is ready to be driven.
- ON : Normal driving is possible.
- OFF : Nor
mal driving is not possible,
or a problem has occurred.
- Blinking : Emergency driving. When the ready indicator goes OFF
or blinks, there is a problem with the
system. In this case, we recommend
that you have your vehicle inspected
by an authorized Kia dealer.
DRIVING THE HYBRID/PLUG-IN HYBRID VEHICLE
OJFHP056292L
OJFHP046420L
OJFHP046421L
OJFHP046425L/OJFHP046426L
❖
Please see this page instead of page 1-19 in owner's manual.

3
Hybrid Battery SOC (State of Charge) Gauge
This gauge indicates the remaining
hybrid battery power. If the SOC is
near the “L (Low) or 0” level, the vehi-
cle automatically operates the
engine to charge the battery. However, if the Service Indicator
( ) and Malfunction Indicator
Lamp (MIL) ( ) turn on when the
SOC gauge is near the “L (Low) or 0”
level, we recommend the vehicle be
checked by an authorized Kia dealer.
✽✽
NOTICE
Never try to start the vehicle if the
fuel tank is empty. In this condition,
the engine cannot charge the high
voltage battery of the hybrid system.
If you try to start the vehicle when
the fuel is empty, the high voltage
battery will become discharged and
be damaged.
Plug-in hybrid mode indicator

: The high-voltage(hybrid) battery is
used to drive the
vehicle.

: The high-voltage (hybrid) batteryand gasolineengine is used to
drive the vehicle.
A corresponding message is displayed
to indicate the selected mode.
OJFH045375
OJFH045375L
■ Type A
■Type B
OJFHP046420L
OJFHP046421L
OJFHP046425L/OJFHP046426L
❖
Please see this page instead of page 5-52 in owner's manual.

HEV (Hybrid Electric Vehicle) system.................................... 1-02
PHEV (Plug-in Electric Vehicle) system.................................1-03
Charging the plug-in hybrid vehicle....................................... 1-04Charging information............................................................1-04
Charging time........................................................................ 1-04
Charging types.......................................................................1-05
Charging status..................................................................... 1-06
Scheduled charging .............................................................. 1-06
Charging precautions............................................................ 1-06
Normal charge....................................................................... 1-08
Charging status..................................................................... 1-10
Trickle charger....................................................................... 1-12
Driving the hybrid/plug-in hybrid vehicle..............................1-19 Changing plug-in hybrid mode............................................1-19
Warning and indicator lights............................................... 1-19
Energy flow hybrid/plug-in hybrid vehicle............................1-24 Vehicle stop............................................................................ 1-24
EV propulsion......................................................................... 1-24
Power assist.......................................................................... 1-24
Engine only propulsion......................................................... 1-25
Engine generation................................................................. 1-25
Regeneration......................................................................... 1-25
Engine brake.......................................................................... 1-26
Power reserve....................................................................... 1-26
Engine generation/regeneration........................................ 1-26
Engine generation/motor drive.......................................... 1-27
Engine brake/regeneration..................................................1-27
Starting the hybrid/plug-in hybrid vehicle (Smart key)..... 1-28 Starting the hybrid system................................................. 1-28
Economical and safe operation of hybrid system...........1-28 Components of the hybrid/plug-in hybrid vehicle............... 1-30
Safety plug............................................................................. 1-33
Some special features of the hybrid vehicle.................... 1-33
Virtual Engine Sound System (VESS)................................ 1-34
High voltage battery air intake...........................................1-34
If an accident occurs............................................................. 1-34
When the hybrid vehicle shuts off..................................... 1-36
Hybrid system overview

1

HEV (HYBRID ELECTRIC VEHICLE) SYSTEM
The Kia Hybrid Electric Vehicle (HEV) uses both the gasoline engine and the electric motor for power. The electric motor is run by a 270V high-voltage HEV battery.
Depending on the driving conditions, the HEV computer selectively operates between the engine and the electric motor or
even both at the same time.
Fuel efficiency increases when the engine is at idle, or when the vehicle is driven by the electric motor with the HEV battery.
The HEV battery charge must be maintained for the times when the engine acts as a generator, such as when stopped at idle.
Charging also occurs when decelerating or by regenerative braking.

Hybrid system overview
1-02

PHEV (PLUG-IN ELECTRIC VEHICLE) SYSTEM
The Kia Plug-in Hybrid Electric Vehicle (PHEV) shares the characteristics of both a conventional hybrid electric vehicle and an
all-electric vehicle.
When used as a conventional hybrid electric vehicle, the HEV computer selectively operates between the engine and the elec‐ tric motor or even both at the same time.
When it is operating in the electric vehicle mode, the vehicle is driven only using the electric motor over a certain distance until
the hybrid battery becomes low. The driving distance in EV mode depends on customer driving style and road conditions. Ag‐ gressive driving maneuvers may at times temporarily enable the engine to operate for maximum power.
The hybrid battery can be fully charged by connecting a plug to an external electric power source.
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1-03
1
Hybrid system overview

0+')12-
4. Remove any dust on the chargingconnector and charging inlet.
5. Hold the charging connector handle. Then, insert it into the charging in‐
let, until you hear a click sound. If it
is not fully connected, a bad con‐
nection between the charging con‐
nector and the charging terminals
may cause a fire.
0+')1-
6. Check if the charging cable connec‐ tion indicator of the high voltage
battery in the instrument cluster is
turned ON.
Charging does not occur when the
indicator is OFF. When the charging
connector is not connected proper‐
ly, reconnect the charging cable to
charge.
NOTICE
•The charging is in progress only
with the shift lever is in P (Park).
Charging the battery with the
Engine Start/Stop button in the
ACC position is possible. Howev‐
er, it may discharge the 12-V
battery. Thus, if possible, charge
the battery with the Engine
Start/Stop button in the OFF po‐
sition.
•Moving the shift lever from P
(Park) to R (Reverse)/
N(Neutral)/D (Drive) stops the
charging process. To restart the
charging process, move the shift
lever to P (Park), press the En‐
gine Start/Stop button to the
OFF position, and disconnect the
charging cable. Then, connect
the charging cable.

1-09
1
Hybrid system overview

NOTICE
•The charging is in progress only
with the shift lever is in P (Park).
Charging the battery with the
Engine Start/Stop button in the
ACC position is possible. Howev‐
er, it may discharge the 12-V
battery. Thus, if possible, charge
the battery with the Engine
Start/Stop button in the OFF po‐
sition.
•Moving the shift lever from P
(Park) to R (Reverse)/
N(Neutral)/D (Drive) stops the
charging process. To restart the
charging process, move the shift
lever to P (Park), press the En‐
gine Start/Stop button to the
OFF position, and disconnect the
charging cable. Then, connect
the charging cable and restart
the vehicle again.
0+')1-
10. After charging has started, the es‐timated charging time is displayed
on the instrument cluster for about
1 minute. It is also displayed, when
the driver’s door is opened with
charging in progress. When sched‐
uled charging is set, the estimated
charging time is displayed as "--".
Unlock charging door in emergency
0+')1-
If the charging door does not open due
to battery discharge, open the hood and slightly pull the emergency cable as
shown above. The charging door will
then open.
Hybrid system overview
1-14

DRIVING THE HYBRID/PLUG-IN HYBRID VEHICLE
Changing plug-in hybrid mode
0+')1-
Pressing the HEV button changes the
plug-in hybrid system modes, as below. • Shortly pressed: EV mode ↔ HEV mode
• Press and hold: It changes to the HEV-charging
mode.
When the HEV button is pressed in the
HEV-charging mode, the mode changes
as below.
- Shortly pressed : It changes to the CS
mode. -
Press and hold: It remains in the
HEV-charging mode.
Plug-in hybrid mode indicator
• CD (Charge Depleting, Electric) mode
0+')1-
The high-voltage (hy‐ brid) battery is used
to drive the vehicle.
• CS (Charge Sustaining, Hybrid) mode
0+')1-
The high-voltage (hy‐ brid) battery and gas‐oline engine is used to
drive the vehicle.
• HEV-charging mode
0+')1-
Gasoline engine is
used to drive the ve‐
hicle and charge thehigh-voltage (hybrid)battery.
0+')1-0+')1-0+')1-
A corresponding message is displayed
to indicate the selected mode.
Warning and indicator lights
Ready indicator
This indicator illuminates:
When the vehicle is ready to be driven.
- ON: Normal driving is possi‐ ble.
- OFF: Normal driving is not possible, or a problem
has occurred.
- Blinking: Emergency driving.
When the ready indicator goes OFF or blinks, there is a problem with the sys‐
tem. In this case, we recommend that
you have your vehicle inspected by an authorized Kia dealer.

1-19
1
Hybrid system overview