engine KIA OPTIMA PLUG-IN HYBRID 2017 Owners Manual

MAINTENANCE UNDER SEVERE USAGE CONDITIONS - FOR GASOLINE ENGINE [EXCEPT EUROPE
(INCLUDING RUSSIA)]
MAINTENANCE ITEMMAINTENANCEINTERVALSDRIVING CONDITIONDRIVING CONDI‐TION
Engine oil and engineoil filter Except Middle East, Brazil R
Every 7,500 km (5,000 miles) or
6 months A, B, C, D, E, F, G, J,
K, L
For Middle East, Brazil R Every 5,000 km (3,000 miles) or
6 months A, B, C, D, E, F, G, J,
K, L
HSG (HybridStarter &Generator)belt Except Middle East, Brazil
R
Every 45,000 km (30,000 miles)
or 24 months C, D, E, L
I Every 7,500 km (5,000 miles) or
6 months C, D, E, L
For Brazil R
Every 50,000 km (30,000 miles)
or 24 months C, D, E, L
I Every 5,000 km (3,000 miles) or
6 months C, D, E, L
For Middle East R
Every 30,000 km (20,000 miles)
or 12 months C, D, E, L
I Every 5,000 km (3,000 miles) or
6 months C, D, E, L
Air cleaner filter RReplace more frequently de‐
pending on the condition C, E
Spark plugs RReplace more frequently de‐
pending on the condition B, L
Automatic transaxle fluid R Every 90,000 km (60,000 miles) A, C, D, E, F, G, L
Maintenance
9-18

MAINTENANCE ITEMMAINTENANCEINTERVALSDRIVING CONDITIONDRIVING CONDI‐TION
Steering gear rack, linkage and boots I Inspect more frequently de‐
pending on the condition C, D, E, F, G
Suspension ball joints IInspect more frequently de‐
pending on the condition C, D, E, F, G
Brake discs and pads, calipers and rotors I Inspect more frequently de‐
pending on the condition C, D, E, G
Parking brake IInspect more frequently de‐
pending on the condition C, D, G
Drive shaft and boots IInspect more frequently de‐
pending on the condition C, D, E, F, G, K
Climate control air filter RReplace more frequently de‐
pending on the condition C, E, G
Maintenance operation
I: Inspect and if necessary, adjust, correct, clean or replace.
R: Replace or change.

SEVERE DRIVING CONDITIONS
A: Repeatedly driving short distance of less than 8 km (5 miles) in normal temperature or less than 16 km
(10 miles) in freezing temperature.
B: Extensive engine idling or low speed driving for long distances.
C: Driving on rough, dusty, muddy, unpaved, graveled or salt-spread roads.
D: Driving in areas using salt or other corrosive materials or in very cold weather
E: Driving in heavy dust condition.
F: Driving in heavy traffic area.
G: Driving on uphill, downhill, or mountain roads.
J: Driving in very cold weather.

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Maintenance

EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in the maintenance schedule. If the vehi‐
cle is being driven in severe conditions,
more frequent oil and filter changes are required.
HSG (hybrid starter &
generator) belt
The HSG belt should be changed at the
intervals specified in the maintenance schedule.
Fuel filter (for gasoline)
Kia gasoline vehicle is equipped a life‐
time fuel filter that integrated with the fuel tank. Regular maintenance or re‐
placement is not needed but depends
on fuel quality. If there are some im‐ portant safety matters like fuel flow
restriction, surging, loss of power, hard
starting problem etc, fuel filter inspec‐ tion or replace is needed.
We recommend that the fuel filter be
Inspected or replaced by an authorized
Kia dealer.
Fuel lines, fuel hoses and
connections
Check the fuel lines, fuel hoses and
connections for leakage and damage. We recommend that the fuel lines, fuel
hoses and connections be replaced by
an authorized Kia dealer.
Vapor hose (for gasoline engine)
and fuel filler cap
The vapor hose and fuel filler cap
should be inspected at those intervals
specified in the maintenance schedule.
Make sure that a new vapor hose or
fuel filler cap is correctly replaced.
Vacuum crankcase ventilation
hoses (if equipped)
Inspect the surface of hoses for evi‐
dence of heat and/or mechanical dam‐ age. Hard and brittle rubber, cracking,
tears, cuts, abrasions, and excessive
swelling indicate deterioration. Particu‐ lar attention should be paid to examine
those hose surfaces nearest to high
heat sources, such as the exhaust manifold. Inspect the hose routing to assure that
the hoses do not come in contact with
any heat source, sharp edges or mov‐ ing component which might cause heat
damage or mechanical wear. Inspect all
hose connections, such as clamps and couplings, to make sure they are se‐
cure, and that no leaks are present. Ho‐
ses should be replaced immediately if there is any evidence of deterioration
or damage.
Air cleaner filter
We recommend that the air cleaner fil‐
ter be replaced by an authorized Kia dealer.
Spark plugs (for gasoline engine)
Make sure to install new spark plugs of
the correct heat range.
WARNING
Do not disconnect and inspect sparkplugs when the engine is hot. Youmay burn yourself.

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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

ENGINE OIL
Checking the engine oil level
(BTPMJOF
&OHJOF
/V
-

(%*

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.
(BTPMJOF
&OHJOF
/V
-

(%*

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

WARNING
Used engine oil may cause skin irri‐tation or cancer if left in contactwith the skin for prolonged periodsof time. Used engine oil containschemicals that have caused cancer inlaboratory animals. Always protectyour skin by washing your handsthoroughly with soap and warm wa‐ter as soon as possible after han‐dling used oil.

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9
Maintenance

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
9-26

(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

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.

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Maintenance