2020 KIA OPTIMA coolant temperature

H29
Charger Error! (Plug-in hybrid)
This message is displayed when the
charging failed due to an external
charger error.
The purpose of this message is to let
you know the error has occurred in
the charger itself, not in the vehicle.
Low/High System temperatureMaintaining Hybrid mode (Plug-in hybrid)
This message is displayed when the
vehicle is unable to convert to EV
mode even when pressing the HEV
button during HEV mode driving due
to low/high system temperature.
Switching to Hybrid mode toallow heating or air conditioning(Plug-in hybrid)
When the coolant temperature is lower than -14 °C (57 °F), and you
turn the climate control On for
heating, this message will be dis-
played in the cluster. Then, the
vehicle will automatically switch to
HEV mode.
When the coolant temperature is higher than -14 °C (57 °F), or you
turn the climate control Off, the
vehicle will automatically return to
EV mode.
Wait until fuel door opens
(Plug-in hybrid)
This message is displayed when you
attempt to open the fuel filler lid with
the fuel tank pressurized. Wait until
the fuel tank is depressurized.
✽ ✽ NOTICE
• It may take up to 20 seconds to
open fuel filler lid.
• When the fuel filler lid is frozen and does not open after 20 seconds
at freezing temperature, slightly
tap the fuel filler lid and then
attempt to open it.

455
Features of your vehicle
(1) : MODE button for changingthe LCD MODES
(2) / : MOVE scroll switch for selecting the items
(3) OK : SET/RESET button for set- ting the items or resetting
the items
❈ 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 6.
If the gauge pointer moves beyond
the normal range area toward the
“Red (H)” position, it indicates over-
heating that may damage the
engine.OJFHP048543C
OJFHP048521N

Features of your vehicle
82
4
EV/HEV (Plug-in hybrid)
A corresponding message is dis-
played when a mode is selected by
pressing the HEV button.
Low battery. Maintaining Hybrid
mode (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.
Charger Error! (Plug-in hybrid)
This message is displayed when
there is a problem with the charger.
The purpose of this message is to let
you know an 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 -14°C (57°F), and you
turn the climate control On for
heating, this message will be dis-
played in the cluster. Then, the
vehicle will automatically switch to
HEV mode.
When the coolant temperature is higher than -14°C (57°F), or you
turn the climate control Off, the
vehicle will automatically return to
EV mode.
Wait until fuel door opens
(Plug-in hybrid)
This message is displayed when you
attempt to open the fuel filler lid with
the fuel tank pressurized. Wait until
the fuel tank is depressurized.
✽ ✽ NOTICE
• It may take up to 20 seconds to
open fuel filler lid.
• When the fuel filler lid is frozen and does not open after 20 seconds
at freezing temperature, slightly
tap the fuel filler lid and then
attempt to open it.

Features of your vehicle
92
4
Engine Coolant
Temperature WarningLight
This warning light illuminates:
When the engine coolant tempera- ture is above 120°C (248°F). This
means that the engine is overheat-
ed and may be damaged.
If your vehicle is overheated, refer
to “Overheating” in chapter 6.
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. Otherwisethe engine may be damaged.

597
Driving your vehicle
When ECO is activated:
The acceleration may slightly bereduced even though you depress
the accelerator fully.
The air conditioner performance may be limited
The shift pattern of the automatic transmission may change.
The engine noise may get louder.
The above situations are normal
conditions when the Eco System is
activated to help improve fuel effi-
ciency in certain situations.
Limitation of ECO operation:
If the following conditions occur while
ECO is operating, the system opera-
tion is limited even though there is no
change in the ECO indicator.
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 ondynamic driving by auto-
matically adjusting the
steering wheel, engine
and transmission 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

599
Driving your vehicle
When ECO is activated:
The acceleration may slightly bereduced eventhough you depress
the accelerator fully.
The air conditioner performance may be limited
The shift pattern of the automatic transmission may change.
The engine noise may get louder.
The above situations are normal
conditions when the ECO system is
activated to improve fuel efficiency.
Limitation of ECO operation:
If the following conditions occur while
ECO is operating, the system opera-
tion is limited even though there is no
change in the ECO indicator.
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 seconds:
The system will be limited, judging
that the driver wants to speed up.

5137
Driving your vehicle
Use high quality ethylene gly-
col coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because
it helps prevent corrosion in the cool-
ing system, lubricates the water
pump and prevents freezing. Be sure
to replace or replenish your coolant
in accordance with the maintenance
schedule in chapter 8. Before winter,
have your coolant tested to assure
that its freezing point is sufficient for
the temperatures anticipated during
the winter.
Check battery and cables
Winter puts additional burdens on
the battery system. Visually inspect
the battery and cables as described
in chapter 8. The level of charge in
your battery can be checked by an
authorized Kia dealer or a service
station.
Change to "winter weight" oil
if necessary
In some climates it is recommended
that a lower viscosity "winter weight"
oil be used during cold weather. See
chapter 9 for recommendations. If
you aren't sure what weight oil you
should use, consult an authorized
Kia dealer.

67
What to do in an emergency
IF THE ENGINE OVERHEATS
If your temperature gauge indicates
overheating, you will experience a
loss of power, or hear loud pinging or
knocking, the engine is probably too
hot. If this happens, you should:
1. Turn on the emergency warningflasher and stop in a safe place.
Move the shift lever to P (Park)
and engage the parking brake.
2. If hot steam does not come out from the engine room, carefully
open the engine room and check
whether the water pump connec-
tor is properly engaged. If the con-
nector is not properly engaged,
stop the engine immediately and
properly engage the connector.
Then, turn the engine on.
3. Turn on the air conditioner. 4. If the “HEV Warning” light turns on
in the driver instrument cluster, or
engine coolant or hot steam emits
from the engine coolant filler, stop
the engine immediately. Then, call
the nearest authorized Kia dealer
for assistance. If the “Engine
Warning” light remains illuminated
or the engine coolant is not flowing
out, keep the engine running.
Open the engine hood for ventila-
tion to help cool down the engine. 5. Check the coolant temperature
gauge on the instrument cluster to
make sure the coolant tempera-
ture is sufficiently cooled down. If
the engine coolant level is low,
please check the connecting parts
between the radiator hose, heater
hose, and water pump for any
signs of leakage. When there is no
sign of leakage, please refill the
engine coolant. If causes and
signs of engine overheating such
as warning light illumination,
engine coolant leakage, or cooling
fan malfunction are found, stop the
vehicle the earliest. Then, call the
nearest authorized Kia dealer for
assistance.
WARNING
While the engine is running,
keep hair, hands and clothing
away from moving parts such
as the fan and drive belts to pre-
vent injury.