cooling KIA OPTIMA PLUG-IN HYBRID 2017 User Guide

NORMAL MAINTENANCE SCHEDULE - FOR GASOLINE ENGINE [EXCEPT EUROPE (INCLUDING
RUSSIA)] (CONTINUED)
MAINTENANCE INTERVALS
Normal Maintenance Schedule - For Gasoline Engine [Except Europe (Including Russia)]
Number of months or driving distance, whichever comes first
Months1224364860728496
Miles×1,0001020304050607080
Km×1,000153045607590105120
MAINTENANCE ITEM
Air cleaner filter Except China, India, Middle East
I I R I I R I I
For China, India, Mid‐dle East R R R R R R R R
Air conditioner compressor/refrigerant I I I I I I I I Automatic transaxle fluid No check, no service required
Battery condition I I I I I I I I
Brake discs and pads I I I I I I I I
Brake lines, hoses and connections I I I I I I I IBrake fluid I R I R I R I R
Climate control air filter R R R R R R R R
Coolant (Engine/Inverter) *1
At first, replace 210,000 km (140,000 miles) or 120 months
After that, replace every 30,000 km (20,000 miles) or 24 months
Cooling system At first, inspect 60,000 km (40,000 miles) or 48 months
After that, inspect every 30,000 km (20,000 miles) or 24 months
Drive shaft and boots I I I I I I I I

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9
Maintenance

Cooling system
Check the cooling system components,
such as the radiator, coolant reservoir,
hoses and connections for leakage and damage. Replace any damaged parts.
Coolant (Engine/Inverter)
The coolant should be changed at the
intervals specified in the maintenance schedule.
Automatic transaxle fluid
Automatic transaxle fluid should not be
checked under normal usage conditions.
We recommend that the automatic transmission fluid changed by an au‐
thorized Kia dealer according to the
maintenance schedule.
NOTICE
Automatic transaxle fluid color is ba‐
sically red.
As the vehicle is driven, the auto‐
matic transaxle fluid will begin to
look darker. It is normal condition
and you should not judge the need
to replace the fluid based upon the
changed color.
CAUTION
The use of a non-specified fluidcould result in transaxle malfunctionand failure.Use only specified automatic trans‐axle fluid (Refer to L

COOLANT
The high-pressure cooling system has
a reservoir filled with year round anti‐
freeze coolant. The reservoir is filled at the factory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and be‐ fore traveling to a colder climate.
CAUTION
•When the engine overheats fromlow engine coolant, suddenly add‐ing engine coolant may causecracks in the engine. To preventdamage, add engine coolant slowlyin small quantities.
•Do not drive with no engine cool‐ant. It may cause water pump fail‐ure and engine seizure, etc.
Checking the coolant level
WARNING
nRemoving radiator cap
•Never attempt to remove the radi‐ator cap while the engine is oper‐ating or hot. Doing so might leadto cooling system and engine dam‐age. Also, hot coolant or steamcould cause serious personal in‐jury.
•Turn the engine off and wait untilit cools down. Use extreme carewhen removing the radiator cap.Wrap a thick towel around it, andturn it counterclockwise slowly tothe first stop. Step back while thepressure is released from the cool‐ing system.When you are sure all the pressurehas been released, press down onthe cap, using a thick towel, andcontinue turning counterclockwiseto remove it.
(Continued)
(Continued)
•Even if the engine is not operating,do not remove the radiator cap orthe drain plug while the engine andradiator are hot. Hot coolant andsteam may still blow out underpressure, causing serious injury.
The engine coolant and/or inverter
coolant level is influenced by the hybrid system temperature. Before checking
or refilling the engine coolant and/or in‐
verter coolant, turn the hybrid vehicle off.
WARNING
The electric motor (cool‐ing fan) is controlled byengine coolant tempera‐ture, refrigerant pressureand vehicle speed. It maysometimes operate evenwhen the engine is notrunning.
(Continued)
Maintenance
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(Continued)
Use extreme caution when workingnear the blades of the cooling fan sothat you are not injured by a rotat‐ing fan blades. As the engine coolanttemperature decreases, the electricmotor will automatically shut off.This is a normal condition.If your vehicle is equipped with GDI,the electric motor (cooling fan) mayoperate until you disconnect thenegative battery cable.
Engine coolant
0+'
Check the condition and connections of
all cooling system hoses and heater ho‐ ses. Replace any swollen or deteriora‐
ted hoses.
The coolant level should be filled be‐
tween F (Full) and L (Low) marks on the side of the coolant reservoir when the
engine is cool.
If the coolant level is low, add enough
specified coolant to provide protection against freezing and corrosion. Bring
the level to F (Full), but do not overfill.
If frequent additions are required, we
recommend that the system be inspec‐
ted by an authorized Kia dealer.
Inverter coolant
Check the condition and connections of
all cooling system hoses. Replace any swollen or deteriorated hoses.
The coolant level should be filled be‐
tween MAX and MIN marks on the side
of the coolant reservoir when the en‐ gine is cool.
If the coolant level is low, add enough
specified coolant to provide protection
against freezing and corrosion. Bring the level to MAX, but do not overfill. If
frequent additions are required, we rec‐
ommend that the system be inspected
by an authorized Kia dealer.

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9
Maintenance

Engine room compartment fuse panel
Fuse NameSymbolFuse ratingCircuit Protected
MULTI FUSE MDPS 1
80A MDPS Unit (Column)
COOLING FAN
60A RLY. 2 (Cooling Fan Relay)
B+5
50A PCB Block (Engine Control Relay, Fuse -FUEL
PUMP/ECU2/TCU1/HORN/WIPER1/BATTERY C/FAN)
B+3
50A Smart Junction Block (IPS 2 (IPS 5), IPS 3 (IPS 6), IPS 7, IPS 8)
REAR HEATED
50A RLY. 11 (Rear Heated Relay)
ACTIVE HYDRAULIC BOOSTER 2
2ACTIVE
HYDRAULIC BOOSTER40A Integrated Brake Actuation Unit
BLOWER
40A RLY. 4 (Blower Relay)
POWER OUTLET1
40A RLY. 7 (Power Outlet Relay)
IG2
30A PCB Block (IG2 Relay)
B+1
60A Smart Junction Block (Fuse - TRUNK, SUNROOF2, S/HEATER
REAR, SUNROOF1, P/WDW RH, P/SEAT PASS, P/WDW LH, P/SEAT
DRV)
EEWP
EEWP60A Engine Electric Water Pump
B+2
60A Smart Junction Block (IPS 1, IPS 4, Fuse - FOG LAMP REAR, S/
HEATER FRONT, AMP)
ACTIVE HYDRAULIC BOOSTER 1
ACTIVE
HYDRAULIC
BOOSTER140A Integrated Brake Actuation Unit
IG1
40A PCB Block (IG1/ACC Relay)

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9
Maintenance

Fuse NameSymbolFuse ratingCircuit Protected
FUSE ECU 1
20A PCM
SENSORS 2
10A Mass Air Flow Sensor, Fuel Pump Relay, Oil Control Valve #1/#2,
Canister Close Valve, Camshaft Position Sensor #1/#2, Purge Con‐
trol Solenoid Valve
TCU 2
15A Transaxle Range Switch
ACTIVE HYDRAULIC BOOSTER 3
310A Multipurpose Check Connector, Integrated Brake Actuation Unit
POWER OUTLET 3
20A Rear Power Outlet
B/UP LAMP
10A PCM, Transaxle Range Switch, Electro Chromic Mirror, Rear Com‐ bination Lamp (IN) LH/RH
PTC HEATER 1
50A PTC HEATER
PTC HEATER 2
50A PTC HEATER
IG3 1
IG3110A HYBRID WATER PUMP
IG3 2
IG3215A PCU/HPCU/POSITION SWITCH
IG3 3
IG3310A HYBRID OBC SIG
IG3 4
IG320A IG3 3 RELAY
SENSOR 1
15A Oxygen Sensor (Up/Down), E/R Junction Block (Cooling Fan Relay)

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9
Maintenance

Fuse NameSymbolFuse ratingCircuit Protected
FUSE IGN COIL
20A Ignition Coil #1/#2/#3/#4
ECU 2
10A PCM
TCU 1
10A PCM
HEV ECU 2
HEV
ECU
210A HPCU, E/R Junction Block (Battery C/Fan Relay)
ECU 3
10A PCM
POWER OUTLET2
20A Front Power Outlet #1
HORN
20A Horn Relay, ICM Relay Box (Burglar Alarm Horn Relay)
WIPER 1
130A Wiper Power Relay
BATTERY C/FAN
BATTERY C/FAN15A E/R Junction Block (Battery C/Fan Relay)
Relay
SymbolRelay NameType
COOLING FAN Relay MINI
BLOWER RelayMICRO
BATTERY
C/FANBATTERY C/FAN Relay MICRO
POWER OUTLET Relay MICRO
H/LAMP WASHER Relay MICRO
DEICER RelayMICRO
Maintenance
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