2018 KIA NIRO PLUG-IN HYBRID engine

H2
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 360V 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.
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Startup/Low speed cruiseAcceleration High speed cruise DecelerationStop
Electric motorElectric motor+EngineEngine+
Motor or MotorChargingEngine OFF

H3
PHEV (PLUG-IN ELECTRIC VEHICLE) SYSTEM
The Kia Plug-in Hybrid Electric Vehicle (PHEV) shares the characteristics of both a conventional hybrid electric vehi-
cle and an all-electric vehicle.
When used as a conventional hybrid electric vehicle, the HEV computer selectively operates between the engine and
the electric 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 dis-
tance until the hybrid battery becomes low. The driving distance in EV mode depends on customer driving style and road
conditions. Aggressive 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.
The engine can be turned on due to factors such as heater usage and a frequent operation of the accelerator pedal
by a driver in CD mode.
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Electric Vehicle ModeStart up/Low speedAcceleration High speedDecelerationExternal charging
Electric motor
CD (Charge Depleting) Mode
CS (Charge Sustaining) Mode
Charging
MotorEngine+MotorEngine+Motor
or MotorChargingBattery charging
6

H10
Comply with the following in orderto prevent electrical shock when
charging:
- Use a waterproof charger
- Make sure to not touch the charg-ing connector and charging plug
when your hand is wet
- Do not charge when there is light- ning
- Do not charge when the charging connector and plug is wet Always keep the charging connec-
tor and charging plug in clean and
dry condition. Be sure to keep the
charging cable in a condition where
there is no water or moisture.
Make sure to use the designated charger for charging the vehicle.
Using any other charger may
cause failure.
Before charging the battery, turn the vehicle OFF.
Be careful not to drop the charging connector. The charging connector
can be damaged.
Always inspect the charging con- nector terminals for damage or
overheating. Do not use if dam-
aged, as this may damage the
vehicle side charge connector and
is not a warrantable repair.
WARNING - Charging
cable
• Immediately stop charging when you find abnormal
symptoms (smell, smoke).
Replace the charging cable if the cable coating is damaged
to prevent electrical shock.
When connecting or removing the charging cable, make sure
to hold the charging connec-
tor handle and charging plug.
If you pull the cable itself
(without using the handle), the
internal wires may disconnect
or get damaged. This may lead
to electric shock or fire.
WARNING - Cooling fan
Do not touch the cooling fan
while vehicle is charging. When
the vehicle is switched OFF
while charging, the cooling fan
inside the engine compartment
or interior rear seat may auto-
matically operate.
CHARGING THE PLUG-IN HYBRID VEHICLE (CONT.)

H12
6. Check if the charging cable con-nection indicator of the high volt-
age battery in the instrument clus-
ter is turned ON.
Charging does not occur when the
indicator is OFF. When the charg-
ing connector is not connected
properly, reconnect the charging
cable to charge.
✽ ✽ NOTICE
• Charging is in progress only when
the shift lever is in P (Park).
Charging the battery with the
Engine Start/Stop button in the
ACC position is possible. However,
it may discharge the 12-V battery.
Thus, if possible, charge the bat-
tery with the Engine Start/Stop
button in the OFF position.
• The charging process is interrupt- ed temporarily when the shift lever
is moved from P (Park) to Not P(R
(Reverse)/N (Neutral)/D (Drive))
during charging. To resume(restart)
charging, move the shift lever to the
P (park) position. Then, the charging
process is resumed(restarted).
7. After charging has started, the
estimated charging time is dis-
played on the instrument cluster
for about 1 minute. It is also dis-
played, when the driver’s door is
opened with charging in progress.
When scheduled charging is set,
the estimated charging time is dis-
played as “--" .
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CHARGING THE PLUG-IN HYBRID VEHICLE (CONT.)
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H18
✽
✽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. However,
it may discharge the 12-V battery.
Thus, if possible, charge the bat-
tery with the Engine Start/Stop
button in the OFF position.
• 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 Engine Start/Stop button
to the OFF position, and discon-
nect the charging cable. Then,
connect the charging cable and
restart the vehicle again.
10. After charging has started, the
estimated charging time is dis-
played on the instrument cluster
for about 1 minute. It is also dis-
played, when the driver’s door is
opened with charging in progress.
When scheduled charging is set,
the estimated charging time is dis-
played as "--".
Unlock Connector in Emergency
If the charging connector does not
unlock for some reason, open the
hood and slightly pull the emergency
cable as shown above. The charging
door will then open.
If a charging door is not opened
immediately with emergency cable in
operation, press a charging door
lightly and pull emergency cable
again.
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CHARGING THE PLUG-IN HYBRID VEHICLE (CONT.)

H25
Changing plug-in hybrid mode
(Plug-in hybrid vehicle)
■EV/HEV Button
Pressing the [EV/HEV] button
changes the plug-in hybrid system
modes, between Electric (Charge
Depleting/CD) mode and Hybrid
(Charge Sustaining/CS) mode.
Each time the mode is changed a
corresponding message is displayed
on the instrument cluster as follows.
Plug-in hybrid mode message
: The high-voltage(hybrid) battery is
mainly used to
drive the vehicle.
: The high-voltage(hybrid) battery
and gasoline
engine are used
to charge the high
voltage battery
(hybrid) and drive
the vehicle.
A corresponding message is dis-
played to indicate the selected mode. ■
AVN screen
Press [PHEV] on the [Home] screen
or the [All menus] screen and the
menus related to plug-in
hybrid([ECO driving], [Energy infor
mation], [EV range], [Charging set-
tings], [Charging stations], [Gas sta-
tions]) are displayed.
For more information, please refer to
the Multimedia System Manual that
was separately supplied with your
vehicle.
DRIVING THE HYBRID/PLUG-IN HYBRID VEHICLE
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H27
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 accelerator pedal and allow
coasting down the road with EV
motor only. This helps prevent
unnecessary fuel consumption and
increases fuel efficiency.
❈Example of a deceleration event is
going down an extended hill, slow-
ing down approaching a toll booth,
and approaching reduced speed
zones.
Press the Engine Start/Stop button
and put the shift lever in P(Park). In
the User Settings Mode, select
Driving Assist, Coasting Guide, and
then On to turn on the system.
Cancel the selection of coasting
guide to turn off the system. For the
explanation of the system, press and
hold the [OK] button.

To activate the system, take the fol-
lowing procedures. Enter your desti-
nation information on the navigation
and select the driving route. Then,
satisfy the following.
- The driving speed should be
between 37 mph (60 km/h) and 99
mph (160 km/h).
❈ The operating speed may vary due
to difference between instrument
cluster and navigation effected by
tire inflation level.
✽ ✽ NOTICE
Coasting guide is only a supplemen-
tal system to assist with fuel-efficient
driving. Thus, the operating condi-
tions may be different in accordance
with traffic/road conditions (i.e.
driving in a traffic jam, driving on a
slope, driving on a curve). Thus,
take the actual driving conditions
into consideration, such as distances
from the vehicles ahead/ behind,
while referring to the coasting guide
system as guidance.

H28
Check Hybrid system
This message is displayed when
there is a problem with the hybrid
control system.
Refrain from driving when the warn-
ing message is displayed.
In this case, have your vehicle inspect-
ed by an authorized Kia dealer.
Check Hybrid system.Turn off engine
This message is displayed when
there is a problem with the hybrid
system. The " " indicator will blink
and a warning chime will sound until
the problem is solved.
In this case, have your vehicle inspect-
ed by an authorized Kia dealer.
Check Hybrid system.Do not start engine.
This message is displayed when the
hybrid battery power (SOC) level is
low. A warning chime will sound until
the problem is solved.
In this case, park the vehicle in a safe
location and have your vehicle
inspected by an authorized Kia dealer.
Stop vehicle and check powerSupply
This message is displayed when a
failure occurs in the power supply
system.
In this case, park the vehicle in a safe
location and have your vehicle
inspected by an authorized Kia dealer.
Refill inverter coolant
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
In this case, have your vehicle inspect-
ed by an authorized Kia dealer.
Stop vehicle and check brakes
This message is displayed when a
failure occurs in the brake system.
In this case, park the vehicle in a safe
location and have your vehicle
inspected by an authorized Kia dealer.
Check brakes
This message is displayed 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.
DRIVING THE HYBRID/PLUG-IN HYBRID VEHICLE (CONT.)