2017 KIA OPTIMA PLUG-IN HYBRID engine

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.
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•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.
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Maintenance
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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
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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

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
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Maintenance

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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.

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Maintenance

Front windshield wiper blade
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For your convenience, move the wind‐
shield wiper blades to the service posi‐ tion as follows;
After turning off the engine, move the
wiper switch to the single wiping (MIST)
position within 20 seconds and hold the switch more than 2 seconds until the
wiper blade is in the fully up position.
CAUTION
Do not allow the wiper arm to fallagainst the windshield, since it maychip or crack the windshield.
Type A
0).
0).
1. Raise the wiper arm. 2. Lift up the wiper blade clip. Then
pull down the blade assembly and
remove it.
3. Install the new blade assembly.
4. Return the wiper arm on the wind‐ shield.
5. Turn ignition to the ON position and wiper arms will return to the nor‐
mal operating position.
Type B
-%"
1. Raise the wiper arm and turn the wiper blade assembly to expose
the plastic locking clip.

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Maintenance

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If any electrolyte gets intoyour eyes, flush your eyeswith clean water for atleast 15 minutes and getimmediate medical atten‐tion.If electrolyte gets on yourskin, thoroughly wash thecontacted area. If you feelpain or burning sensation,get medical attention im‐mediately.
Wear eye protection whencharging or working near abattery. Always provideventilation when workingin an enclosed space.
An inappropriately dis‐posed battery can beharmful to the environ‐ment and human health.Dispose the battery ac‐cording to your local law(s)or regulation.
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The battery contains lead.Do not dispose of it afteruse. We recommend thatyou contact an authorizedKia dealer.
•When lifting a plastic-cased bat‐tery, excessive pressure on thecase may cause battery acid toleak, resulting in personal injury.Lift with a battery carrier or withyour hands on opposite corners.
•Never attempt to recharge thebattery when the battery cablesare connected.
•The electrical ignition systemworks with high voltage. Nevertouch these components with theengine running or the ignitionswitched on.
Failure to follow the above warningscan result in serious bodily injury ordeath.
CAUTION
•When you don’t use the vehicle fora long time in the low temperaturearea, separate the battery andkeep it indoors.
•Always charge the battery fully toprevent battery case damage inlow temperature area.
•If you connect unauthorized elec‐tronic devices to the battery, thebattery may be discharged. Neveruse unauthorized devices.
Battery capacity label
&YBNQMF
06.-
Maintenance
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❈The actual battery label in the vehi‐
cle may differ from the illustration.
1. AGM90L-DIN : The Kia model name
of battery
2. 90Ah(20HR) : The nominal capacity (in Ampere hours)
3. 170RC : The nominal reserve ca‐ pacity (in min.)
4. 12V : The nominal voltage
5. 850CCA (SAE) : The cold-test cur‐ rent in amperes by SAE
6. 680A : The cold-test current in am‐ peres by EN
Battery recharging
Your vehicle has a maintenance-free,
calcium-based battery. • If the battery becomes discharged in a short time (because, for example,the headlights or interior lights were
left on while the vehicle was not in
use), recharge it by slow charging
(trickle) for 10 hours.
• If the battery gradually discharges because of high electric load while
the vehicle is being used, recharge it
at 20-30A for two hours.
WARNING
nRecharging battery
When recharging the battery, ob‐serve the following precautions:•The battery must be removedfrom the vehicle and placed in anarea with good ventilation.
•Do not allow cigarettes, sparks, orflame near the battery.
•Watch the battery during charg‐ing, and stop or reduce the charg‐ing rate if the battery cells begingassing (boiling) violently or if thetemperature of the electrolyte ofany cell exceeds 49°C (120°F).
•Wear eye protection when check‐ing the battery during charging.
•Disconnect the battery charger inthe following order.1.Turn off the battery chargermain switch.
2.Unhook the negative clampfrom the negative battery ter‐minal.
3.Unhook the positive clamp fromthe positive battery terminal.
WARNING
•Before performing maintenance orrecharging the battery, turn off allaccessories and stop the engine.
•The negative battery cable mustbe removed first and installed lastwhen the battery is disconnected.
•Operation related to the battery isrecommended to an authorized Kiadealer.
CAUTION
•Keep the battery away from wa‐ter or any liquid.
•For your safety, we recommendthat you use parts for replace‐ment from an authorized Kia deal‐er.
Reset items
Items should be reset after the battery
has been discharged or the battery has been disconnected. • Auto up/down window (if equipped)
• Sunroof (if equipped)
• Trip computer

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Maintenance

FUSES
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❈Left side: Normal Right side: Blown
A vehicle’s electrical system is protec‐
ted from electrical overload damage by fuses.
This vehicle has 2 (or 3) fuse panels,
one located in the driver’s side panel
bolster, the others in the engine com‐ partment near the battery.
If any of your vehicle’s lights, accesso‐
ries, or controls do not work, check the
appropriate circuit fuse. If a fuse has blown, the element inside the fuse will
melt.
If the electrical system does not work,
first check the driver’s side fuse panel.
Before replacing a blown fuse, discon‐ nect the negative battery cable.
Always replace a blown fuse with one
of the same rating.
If the replacement fuse blows, this indi‐
cates an electrical problem. Avoid using the system involved and immediately
consult an authorized Kia dealer.
Three kinds of fuses are used: blade
type for lower amperage rating, car‐ tridge type, and multi fuse for higher
amperage ratings.
WARNING
nFuse replacement
•Never replace a fuse with anythingbut another fuse of the same rat‐ing.
•A higher capacity fuse could causedamage and possibly a fire.
•Never install a wire or aluminumfoil instead of the proper fuseeven as a temporary repair. It maycause extensive wiring damageand a possible fire.
•Do not arbitrarily modify or add-on electric wiring of the vehicle.
CAUTION
Do not use a screwdriver or any oth‐er metal object to remove fuses be‐cause it may cause a short circuitand damage the system.
Maintenance
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