KIA OPTIMA PLUG-IN HYBRID 2017 Owners Manual

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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9
Maintenance

BRAKE FLUID (IF EQUIPPED)
Checking the brake fluid level
Check the fluid level in the reservoir pe‐
riodically. The fluid level should be be‐ tween MAX and MIN marks on the side
of the reservoir.
Before removing the reservoir cap and
adding brake fluid, clean the area around the reservoir cap thoroughly to
prevent brake fluid contamination.
If the level is low, add fluid to the MAX
level. The level will fall with accumula‐ ted mileage. This is a normal condition
associated with the wear of the brake
linings. If the fluid level is excessively low, we
recommend that the system be
checked by an authorized Kia dealer.
Use only the specified brake fluid (Re‐
fer to L

WASHER FLUID
Checking the washer fluid level
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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.

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Maintenance

PARKING BRAKE (IF EQUIPPED)
Checking the parking brake
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Check whether the stroke is within
specification when the parking brake pedal is depressed with 30 kg (66 lb,
294N) of force. Also, the parking brake
alone should securely hold the vehicle on a fairly steep grade. If the stroke is
more or less than specified, we recom‐
mend that the system be serviced by an authorized Kia dealer.
Stroke : 6~7 notch
Maintenance
9-32

AIR CLEANER
Filter replacement
It must be replaced when necessary,
and should not be washed.
You can clean the filter when inspecting the air cleaner element.
Clean the filter by using compressed
air.
1. Pull out the air cleaner cover.
2. Unlock by turning the locking lever downward.
3. Pull the air cleaner filter to replace.

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9
Maintenance

4. Lock the cover with the reverse or‐der.
Replace the filter according to the
Maintenance Schedule.
If the vehicle is operated in extremely dusty or sandy areas, replace the ele‐
ment more often than the usual rec‐
ommended intervals. (Refer to L

CLIMATE CONTROL AIR FILTER
Filter inspection
The climate control air filter should bereplaced according to the maintenance
schedule. If the vehicle is operated in
severely air-polluted cities or on dusty rough roads for a long period, it should
be inspected more frequently and re‐
placed earlier. When you replace the cli‐ mate control air filter, replace it per‐
forming the following procedure, and
be careful to avoid damaging other components.
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1. Open the glove box and remove the stoppers on both sides.
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2. With the glove box open, pull thesupport strap (1).
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3. Remove the climate control air fil‐ter cover while pressing the lock on
the right side of the cover.
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4. Replace the climate control air fil‐ ter.
5. Reassemble in the reverse order of disassembly.
NOTICE
When replacing the climate control
air filter install it properly. Other‐
wise, the system may produce noise
and the effectiveness of the filter
may be reduced.

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9
Maintenance

WIPER BLADES
Blade inspection
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NOTICE
Commercial hot waxes applied by
automatic car washes have been
known to make the windshield diffi‐
cult to clean.
Contamination of either the windshield
or the wiper blades with foreign matter can reduce the effectiveness of the
windshield wipers. Common sources of
contamination are insects, tree sap, and hot wax treatments used by some
commercial car washes. If the blades
are not wiping properly, clean both the window and the blades with a good
cleaner or mild detergent, and rinse
thoroughly with clean water.
CAUTION
To prevent damage to the wiperblades, do not use gasoline, kero‐sene, paint thinner, or other solventson or near them.
Blade replacement
When the wipers no longer clean ade‐
quately, the blades may be worn or cracked, and require replacement.
CAUTION
To prevent damage to the wiperarms or other components, do not
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attempt to move the wipers man‐ually.
CAUTION
The use of a non-specified wiperblade could result in wiper malfunc‐tion and failure.
Maintenance
9-36

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
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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
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1. Raise the wiper arm and turn the wiper blade assembly to expose
the plastic locking clip.

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Maintenance