2018 KIA OPTIMA PHEV coolant

H25
Low battery temp. Maintainingcurrent (Plug-in hybrid)
This message is displayed when
unable to convert to EV mode even
when pressing the HEV button dur-
ing HEV mode driving due to low bat-
tery temperature.
Charging complete. Switching toHybrid (Plug-in hybrid)
This message is displayed automati-
cally converting to HEV mode due to
completed battery charging during
charging mode driving.
Charger Error! (Plug-in hybrid)
This messages is displayed when
the charging failed by external charg-
er error.
This message is for Normal charger.
The purpose of this message is to let
you know the error has occurred in
charger itself not in vehicle.
Low/High System Temp.Maintaining Hybrid (Plug-in hybrid)
This message is displayed when
unable to convert to EV mode even
when pressing the HEV button dur-
ing HEV mode driving due to
low/high system temperature
Switching to Hybrid mode toallow heating (Plug-in hybrid)
When the coolant temperature is lower than 57 °F (-14 °C), and you
turn the climate control On for
heating, the above message will be
displayed in the cluster. Then, the
vehicle will automatically switch to
HEV mode.
When the coolant temperature is higher than 57 °F (-14 °C), or you
turn the climate control Off, the
vehicle will automatically return to
EV mode.

Your vehicle at a glance
62
ENGINE COMPARTMENT
OJFH075161L
■
■
Gasoline Engine (Nu 2.0L - GDI)
❈ The actual engine room in the vehicle may differ from the illustration. 1. Engine coolant reservoir ...................8-27
2. Engine oil filler cap ...........................8-24
3. Engine oil dipstick .............................8-24
4. Brake fluid reservoir ..........................8-31
5. Air cleaner.........................................8-34
6. Fuse box ...........................................8-60
7. Inverter coolant reservoir ..................8-28
8. Radiator cap .....................................8-29
9. Windshield washer fluid reservoir .....8-32

453
Features of your vehicle
[Type A]
(1) : MODE button for changingmodes
(2) / /OK : SELECT scroll switch for setting the select-
ed item and RESET
scroll switch for reset-
ting items
[Type B]
(1) : MODE button for changing modes
(2) / /OK : SELECT scroll switch for setting the
selected item and
RESET scroll switch
for resetting items
(3) : RETURN button for moving the previous mode or item
(if equipped)
❈ For the LCD modes, refer to “LCD
Display” in this chapter.Gauges
Speedometer
The speedometer indicates the
speed of the vehicle and is calibrated
in miles per hour (mph) and/or kilo-
meters per hour (km/h).
Engine coolant temperature gauge
This gauge shows the temperature
of the engine coolant when the
Engine Start/Stop button is in the ON
position.
Do not continue driving with an over-
heated engine. If your vehicle over-
heats, refer to “If the engine over-
heats” in chapter 7.
If the gauge pointer moves beyond
the normal range area toward the
“Red (H)” position, it indicates over-
heating that may damage the
engine.OJFA045102
OJFH046419N

Features of your vehicle
78
4
Stop vehicle and check power
supply
This warning message illuminates
when a failure occurs in the power
supply system.
In this case, park the vehicle in a
safe location and tow your vehicle to
the nearest authorized Kia dealer
and have the vehicle inspected.
Stop vehicle to charge battery
This warning message illuminates
when the hybrid battery power
(SOC) level is low.
In this case, park the vehicle in a
safe location and wait until the hybrid
battery is charged.
Refuel to prevent Hybrid batterydamage
This warning message illuminates
when the fuel tank is nearly empty.
You should refill the fuel tank to pre-
vent hybrid battery damage.
Refill inverter coolant
This warning message illuminates
when the inverter coolant is nearly
empty.
You should refill the inverter coolant.
Check brakes
This warning message illuminates
when the brake performance is low
or the regenerative brake does not
work properly due to a failure in the
brake system.
In this case, it may take longer for the
brake pedal to operate and the brak-
ing distance may become longer.
Stop vehicle and check brakes
This warning message is displayed
when a failure occurs in the brake
system.
In this case, park the vehicle in a
safe location and tow your vehicle to
the nearest authorized Kia dealer
and have the vehicle inspected.
Coasting guide (if equipped)
A chime will sound and the coasting
guide indicator will blink four times to
inform the driver when to take the
foot off from the accelerator by antic-
ipating a decelerating event* based
on the analysis of driving routes and
road conditions of the navigation. It
encourages the driver to remove foot
from the pedal and allow coasting
down the road with EV motor only.
This helps prevent unnecessary fuel
consumption and increases fuel effi-
ciency.
❈ Example of a deceleration event is
going down an extended hill, slow-
ing down approaching a toll booth,
and approaching reduced speed
zones.

Features of your vehicle
80
4
EV/HEV/CHG modes
(Plug-in hybrid)
A corresponding message is dis-
played when a mode is selected by
pressing the HEV button.
Battery charged. Maintaining cur-rent (Plug-in hybrid)
This message is displayed when
unable to convert to charging mode
even when pressing and holding the
HEV button during EV/HEV mode
driving because the high-
voltage(hybrid) battery is already
fully charged.
Low battery. Maintaining Hybrid(Plug-in hybrid)
This message is displayed when
unable to convert to EV mode even
when pressing the HEV button dur-
ing HEV mode driving due to insuffi-
cient high-voltage(hybrid) battery
level.
Low battery temp. Maintainingcurrent (Plug-in hybrid)
This message is displayed when
unable to convert to EV mode even
when pressing the HEV button dur-
ing HEV mode driving due to low bat-
tery temperature.
Charging complete. Switching toHybrid (Plug-in hybrid)
This message is displayed automati-
cally converting to HEV mode due to
completed battery charging during
charging mode driving.
Charger Error! (Plug-in hybrid)
This messages is displayed when
the charging failed by external charg-
er error.
The purpose of this message is to let
you know the error has occurred in
charger itself not in vehicle.
Low/High System Temp.Maintaining Hybrid (Plug-in hybrid)
This message is displayed when
unable to convert to EV mode even
when pressing the HEV button dur-
ing HEV mode driving due to
low/high system temperature.
Switching to Hybrid mode toallow heating (Plug-in hybrid)
When the coolant temperature is lower than 57°F (-14°C), and you
turn the climate control On for
heating, the above message will be
displayed in the cluster. Then, the
vehicle will automatically switch to
HEV mode.
When the coolant temperature is higher than 57°F(-14°C), or you
turn the climate control Off, the
vehicle will automatically return to
EV mode.

Features of your vehicle
90
4
Engine Coolant
Temperature WarningLight
This warning light illuminates:
When the engine coolant tempera- ture is above 248°F (120°C). This
means that the engine is overheat-
ed and may be damaged.
If your vehicle is overheated, refer
to “Overheating” in chapter 7.
Indicator Lights
Charging Cable
Connection Indicator (Plug-in hybrid)
This indicator illuminates in red when
the charging cable is connected.
Electronic StabilityControl (ESC) IndicatorLight
This indicator light illuminates:
Once you set the Engine Start/Stop Button to the ON posi-
tion.
- It illuminates for approximately 3seconds and then goes off.
When there is a malfunction with the ESC system.
In this case, have your vehicle
inspected by an authorized Kia
dealer.
This indicator light blinks:
While the ESC is operating.
❈ For more details, refer to
“Electronic Stability Control (ESC)”
in chapter 6.
CAUTION - Engine
Overheating
Do not continue driving with the
engine overheated. Otherwiseengine may be damaged.

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.

Driving your vehicle
74
6
When Active ECO is activated:
The acceleration may slightly be
reduced even though you depress
the accelerator fully.
The air conditioner performance may be limited
The shift pattern of the automatic transaxle may change.
The engine noise may get louder.
The above situations are normal
conditions when the Active Eco
System is activated to improve fuel
efficiency. Limitation of Active ECO opera-
tion:
If the following conditions occur while
Active ECO is operating, the system
operation is limited even though
there is no change in the ECO indi-
cator.
When the coolant temperature is
low:
The system will be limited until
engine performance becomes nor-
mal.
When driving up a hill: The system will be limited to gain
power when driving uphill because
the engine torque is restricted.
When using manual mode: The system will be limited accord-
ing to the shift location.
When the accelerator pedal is deeply depressed for a few sec-
onds:
The system will be limited, judging
that the driver wants to speed up.SPORT mode
SPORT mode focuses on
dynamic driving by auto-
matically adjusting the
steering wheel, engine
and transaxle system.
When the DRIVE MODE button is pressed and the SPORT mode is
selected, the SPORT indicator
(yellow) will illuminate.
Whenever the hybrid system is restarted, the Drive Mode will revert
back to ECO mode. If SPORT
mode is desired, re-select SPORT
mode from the DRIVE MODE but-
ton.
If the system is activated: - While holding vehicle speed, itmaintains the gear and RPM for
some time even though the accel-
erator pedal is not depressed.
- Up-shifting is delayed.
✽ ✽

NOTICE
In Sport drive mode, the fuel effi-
ciency may decrease.
SPORT