coolant KIA OPTIMA PLUG-IN HYBRID 2017 Owner's Manual

(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.

9-27
9
Maintenance

Recommended coolant
• When adding coolant, use only deion‐ized water or soft water for your ve‐hicle and never mix hard water in the
coolant filled at the factory. An im‐
proper coolant mixture can result in
serious malfunction or engine dam‐
age.
• The engine in your vehicle has alumi‐ num engine parts and must be pro‐
tected by an ethylene-glycol with
phosphate based coolant to prevent
corrosion and freezing.
• DO NOT USE alcohol or methanol coolant or mix them with the speci‐fied coolant.
• Do not use a solution that contains more than 60% antifreeze or less
than 35% antifreeze, which would re‐
duce the effectiveness of the solu‐ tion.
For mixture percentage, refer to the
following table.
AmbientTempera‐ture
Mixture Percentage (vol‐ume)
AntifreezeWater
-15°C (5°F) 35 65
AmbientTempera‐ture
Mixture Percentage (vol‐ume)
AntifreezeWater
-25°C
(-13°F) 40 60
-35°C
(-31°F) 50 50
-45°C
(-49°F) 60 40
0+'
Maintenance

9-28

WARNING
nRadiator cap
Do not remove the radiator capwhen the engine and radiator arehot. Scalding hot coolant and steammay blow out under pressure caus‐ing serious injury.
Changing the coolant
We recommend that the coolant be re‐
placed by an authorized Kia dealer.
CAUTION
Put a thick cloth around the radiatorcap before refilling the coolant in or‐der to prevent the coolant fromoverflowing into engine parts suchas the alternator.
WARNING
nCoolant
•Do not use radiator coolant or an‐tifreeze in the washer fluid reser‐voir.
•Radiator coolant can severely ob‐scure visibility when sprayed onthe windshield and may cause lossof vehicle control or damage thepaint and body trim.

9-29
9
Maintenance

WASHER FLUID
Checking the washer fluid level
0+'
The reservoir is translucent so that you
can check the level with a quick visual
inspection.
Check the fluid level in the washer fluid
reservoir and add fluid if necessary.
Plain water may be used if washer fluid is not available. However, use washer
solvent with antifreeze characteristics
in cold climates to prevent freezing.
WARNING
nCoolant
•Do not use radiator coolant or an‐tifreeze in the washer fluid reser‐voir.
•Radiator coolant can severely ob‐scure visibility when sprayed onthe windshield and may cause lossof vehicle control or damage topaint and body trim.
•Windshield washer fluid agentscontain some amounts of alcoholand can be flammable under cer‐tain circumstances. Do not allowsparks or flame to contact thewasher fluid or the washer fluidreservoir. Damage to the vehicle oroccupants could occur.
•Windshield washer fluid is poison‐ous to humans and animals. Donot drink and avoid contactingwindshield washer fluid. Seriousinjury or death could occur.

9-31
9
Maintenance

EMISSION CONTROL SYSTEM (IF EQUIPPED)
The emission control system of your vehicle is covered by a written limited
warranty. Please see the warranty in‐
formation contained in the Warranty & Maintenance book in your vehicle.
Your vehicle is equipped with an emis‐
sion control system to meet all applica‐
ble emission regulations.
There are three emission control sys‐ tems, as follows. 1. Crankcase emission control system
2. Evaporative emission control sys‐ tem
3. Exhaust emission control system
In order to assure the proper function
of the emission control systems, it is
recommended that you have your vehi‐ cle inspected and maintained by an au‐
thorized Kia dealer in accordance with
the maintenance schedule in this man‐ ual.
Caution for the Inspection and Mainte‐nance Test (With Electronic StabilityControl (ESC) system)
•To prevent the vehicle from misfiringduring dynamometer testing, turnthe Electronic Stability Control (ESC)system off by pressing the ESCswitch. •
After dynamometer testing is com‐pleted, turn the ESC system back onby pressing the ESC switch again.
1. Crankcase emission control
system
The positive crankcase ventilation sys‐
tem is employed to prevent air pollu‐ tion caused by blow-by gases being
emitted from the crankcase. This sys‐
tem supplies fresh filtered air to the crankcase through the air intake hose.
Inside the crankcase, the fresh air mix‐
es with blow-by gases, which then pass through the PCV valve into the induc‐
tion system.
2. Evaporative emission control
system
The Evaporative Emission Control Sys‐
tem is designed to prevent fuel vapors from escaping into the atmosphere.
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the on‐ board canister. When the engine is run‐
ning, the fuel vapors absorbed in the
canister are drawn into the surge tank through the purge control solenoid
valve.
Purge control solenoid valve (PCSV)
The purge control solenoid valve is con‐ trolled by the Engine Control Module
(ECM); when the engine coolant tem‐
perature is low during idling, the PCSV closes so that evaporated fuel is not
taken into the engine. After the engine
warms up during ordinary driving, the PCSV opens to introduce evaporated
fuel to the engine.
3. Exhaust emission control
system
The Exhaust Emission Control System
is a highly effective system which con‐
trols exhaust emissions while maintain‐
ing good vehicle performance.
Vehicle modifications
This vehicle should not be modified.
Modification of your vehicle could affect
its performance, safety or durability and may even violate governmental
safety and emissions regulations.
In addition, damage or performance
problems resulting from any modifica‐ tion may not be covered under warran‐
ty.

9-91
9
Maintenance

RECOMMENDED LUBRICANTS AND CAPACITIES
LubricantVolumeClassification
Engine oil *1
*2
(drain and refill)
Recommends
4.1 l
(4.33 US qt.) ACEA A5 or above / 5W-30 (C)
*1
Automatic transaxle fluid 6.0 l
(6.34 US qt.) - ATF SP-IV
(Recommended SK ATF SP-IV, MICHANG ATF SP-IV, NOCA ATF SP-IV)
Coolant 6.744 l
(7.12 US qt.) Mixture of antifreeze and water
(Ethylene glycol base coolant for aluminum radiator)
Inverter coolant 3.13 l
(3.30 US qt.) Mixture of antifreeze and water
(Ethylene glycol base coolant for aluminum radiator)
Brake/Clutch fluid 0.49 ± 0.02 l
(0.52 ± 0.02 US qt.) DOT 3 or DOT 4
Fuel Hybrid
60 l
(63.42 US qt.) Refer to L

Climate control air ýilter.................................... 5-134,9-35
Climate control systemAutomatic climate control system........................5-137
Automatic heatinþ and air conditioninþ............... 5-138
Closinþ the sunrooý.........................................................5-37
Clothes hanþer.............................................................. 5-160
Combined cluster: see "Instrument cluster"...............5-48
Coolant.............................................................................. 9-26
Coolinþ ýluid: see "Enþine coolant"............................... 9-26
Crankcase emission control system............................ 9-91
Cruise control system.................................................... 7-47
To cancel cruise control............................................. 7-50
To set cruise control speed....................................... 7-48
To temporarily accelerate with the cruisecontrol on.................................................................... 7-50
Cup holder...................................................................... 5-153
Curtain air baþ................................................................. 4-58
D
Dashboard illumination: see "Instrument panel illumination".................................................................... 5-49
Dashboard: see "Instrument cluster".......................... 5-48
Declaration oý conýormity........................................... 10-19
Deýoþþinþ (windshield)................................................ 5-146 Deýroster (rear window)............................................. 5-131
Deýrostinþ (windshield)............................................... 5-146
Dimensions.................................................................... 10-02
Disarmed staþe............................................................... 5-11Display illumination: see "Instrument panel illu‐
mination"......................................................................... 5-49
Displays: see "Instrument cluster"...............................5-48
Door lock/unlock ýeatures............................................. 5-15
Door locks......................................................................... 5-12 Central door lock switch............................................ 5-14
Door lock/unlock ýeatures......................................... 5-15
From inside the vehicle.............................................. 5-13
From outside the vehicle........................................... 5-12
Drinks holder: see "Cup holder".................................. 5-153
DRIVE mode (Drive mode inteþrated control system)..................................................................7-75,7-77
Drive mode inteþrated control system............. 7-75,7-77 ECO mode........................................................... 7-75,7-77
SPORT mode................................................................7-76
Driver position memory system.................................. 4-08
Driver's and passenþer's ýront air baþ........................ 4-51
Drivinþ at niþht............................................................. 7-100
Drivinþ in ýlooded areas............................................... 7-101
Drivinþ in the rain......................................................... 7-101
Alphabetical index
I-3
Alphabetical index

Drivinþ oýý-road............................................................ 7-102
E
ECO mode (Drive mode inteþrated control sys‐ tem)........................................................................7-75,7-77
Economical operation..................................................... 7-97
Electric power steerinþ........................................ 5-40,5-44
Electronic parkinþ brake (EPB)..................................... 7-19
Electronic stability control (ESC).................................. 7-30
Emerþency ýuel ýiller lid release......................... 5-30,5-33
Emerþency startinþ........................................................ 8-05
Emerþency Stop Siþnal (ESS)........................................ 7-35
Emission control system............................................... 9-91 Crankcase emission control system........................9-91
Evaporative emission control system..................... 9-91
Exhaust emission control system........................... 9-91
Enþine compartment............................................3-07,9-03
Enþine coolant................................................................. 9-26
Enþine coolant temperature þauþe............................. 5-53
Enþine number.............................................................. 10-16
Enþine oil.......................................................................... 9-24
Enþine speciýication......................................................10-03
Enþine start/stop button.............................................. 7-06 Enþine start/stop button position........................... 7-06
Illuminated enþine start/stop button..................... 7-06
Enþine start/stop button illumination.........................7-06
Evaporative emission control system......................... 9-91
Exhaust emission control system................................ 9-91
Explanation oý scheduled maintenance items........... 9-21
Exterior care.................................................................... 9-85
Exterior overview (Front).............................................. 3-02
Exterior overview (Rear)................................................3-03
F
FCC.................................................................................. 6-121
Floor mat anchor(s)......................................................5-161Fluid Brake ýluid.................................................................... 9-30
Washer ýluid.................................................................9-31
Foþ liþht (rear).............................................................. 5-119
Foldinþ the outside rearview mirror............................ 5-46
Foot parkinþ brake..........................................................7-18
Front seat adjustment (manual).................................. 4-05
Front seat adjustment (power)....................................4-06
Fuel ýiller lid............................................................ 5-29,5-31
Emerþency ýuel ýiller lid release..................... 5-30,5-33
Alphabetical index
I-4 Alphabetical index