2017 KIA OPTIMA PLUG-IN HYBRID check engine

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

ENGINE OIL
Checking the engine oil level
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1. Be sure the vehicle is on levelground.
2. Start the engine and allow it to reach normal operating tempera‐
ture.
3. Turn the engine off and wait for a few minutes (about 5 minutes) for
the oil to return to the oil pan.
4. Pull the dipstick out, wipe it clean, and re-insert it fully.
WARNING
nRadiator hose
Be very careful not to touch the ra‐diator hose when checking or addingthe engine oil as it may be hotenough to burn you.
5. Pull the dipstick out again andcheck the level. The level should be
between F (Full) and L (Low).
CAUTION
•Do not overfill the engine oil. Itmay damage the engine
•Do not spill engine oil, when addingor changing engine oil. If you dropthe engine oil on the engine room,wipe it off immediately.
•When you wipe the oil level gauge,you should wipe it with a cleancloth. When mixed with debris, itcan cause engine damage.
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If it is near or at L (Low), add enough oil
to bring the level to F (Full). Do notoverfill.Use a funnel to help prevent oil frombeing spilled on engine components.
Use only the specified engine oil. (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
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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

❈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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9
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.
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If it fits loosely, we recommend that
you consult an authorized Kia dealer.
If you do not have a spare, use a fuse of the same rating from a circuit you
may not need for operating the vehicle,
such as the cigarette lighter fuse.
If the headlights or taillights, stop lights, courtesy lamp, day time running
lights (D.R.L) do not work and the fuses
are OK, check the fuse panel in the en‐ gine compartment. If a fuse is blown, it
must be replaced.
Fuse switch
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Always, put the fuse switch at the ON
position. If you move the switch to the OFF posi‐
tion, some items such as audio and dig‐
ital clock must be reset and transmitter
(or smart key) may not work properly.
If the fuse switch is in OFF, a warning sign will illuminate on the dashboard.
CAUTION
•Put all switches in ON when driv‐ing.
•If the vehicle remains idle for over1 month, put all switches in OFF toprevent the batteries from beingdischarged.
•Excluding long-term parking forover 1 month, the contact pointsof switches may wear out uponextensive use. Please refrain fromexcessive use of switches.
Engine compartment fuse
replacement
1. Turn the ignition switch and all oth‐ er switches off.
2. Remove the fuse panel cover by pressing the tab and pulling the
cover up. When the blade type fuse
is disconnected, remove it by using
the clip designed for changing fuses
located in the engine room fuse
box. Upon removal, securely insert
reserve fuse of equal quantity.
3. Check the removed fuse; replace it if it is blown. To remove or insert
the fuse, use the fuse puller in the
engine compartment fuse panel.
Maintenance
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4. Push in a new fuse of the samerating, and make sure it fits tightly
in the clips. If it fits loosely, we rec‐
ommend that you consult an au‐
thorized Kia dealer.
CAUTION
After checking the fuse panel in theengine compartment, securely installthe fuse panel. If not, cover throughthe audible clicking sound. Electricalfailures may occur from water con‐tact.
Multi fuse
If the multi fuse is blown, it must be re‐
moved as follows: 1. Disconnect the negative battery cable.
2. Remove the nuts shown in the pic‐ ture above.
3. Replace the fuse with a new one of the same rating.
4. Reinstall in the reverse order of re‐ moval.
NOTICE
If the multi fuse is blown, we recom‐
mend that you consult an author‐
ized Kia dealer.
Main fuse
If the main fuse is blown, it must be re‐
moved as follows: 1. Turn off the engine.
2. Disconnect the negative battery cable.
3. Remove the nuts shown in the pic‐ ture above.

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Maintenance