2012 KIA Optima Hybrid engine coolant

15
Maintenance
NORMAL MAINTENANCE SCHEDULE (CONT.)
192,000 km or 96 months
❑Inspect air conditioning refrigerant
❑Inspect brake fluid
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers and rotors
❑Inspect fuel filter *1
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect parking brake
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Inspect vapor hose and fuel filler cap
❑Inspect valve clearance *2
❑Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 96,000 km or 72 months after every 24,000 km or
24 months)
❑ Inspect inverter coolant hose
❑ Replace air cleaner filter
❑Replace climate control air filter
(for evaporator and blower unit)
(Continued)
(Continued)
❑Replace engine coolant (First, 192,000 km or 120 months
after every 48,000 km or 24 months)
❑Replace inverter coolant (First, 192,000 km or 120 months
after every 48,000 km or 24 months)
❑Replace engine oil and filter (192,000 km or 192 months)
❑Replace HSG belt (192,000 km or 96 months)
❑Add fuel additive *3 (Every 12,000 km or 12 months)
*1: Fuel filter & Fuel tank air filter are considered to be maintenance
free but periodic inspection is recommended for this maintenance
schedule depends on fuel quality. If there are some important safe-
ty matters like fuel flow restriction, surging, loss of power, hard
starting problem etc, replace the fuel filter immediately regardless
of maintenance schedule and consult an authorized Kia dealer for
details.
*
2: Inspect for excessive tappet noise and/or engine vibration and adjust if necessary.
*
3: If TOP TIER Detergent Gasoline is not available, one bottle of addi- tive is recommended. Additives are available from your authorized
Kia dealer along with information on how to use them. Do not mix
other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
7

Maintenance
16
7
NORMAL MAINTENANCE SCHEDULE (CONT.)
216,000 km or 108 months
❑ Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers and rotors
❑Inspect HSG belt (216,000 km or 216 months)
❑ Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
(Continued)
228,000 km or 114 months
❑Inspect air cleaner filter
❑Inspect HSG belt (228,000 km or 228 months)
❑ Inspect vacuum hose
❑Replace engine oil and filter (228,000 km or 228 months)
❑Add fuel additive *1 (Every 12,000 km or 12 months)
204,000 km or 102 months
❑ Inspect air cleaner filter
❑Inspect HSG belt (204,000 km or 204 months)
❑ Inspect vacuum hose
❑Replace engine oil and filter (204,000 km or 204 months)
❑Add fuel additive *1 (Every 12,000 km or 12 months)
(Continued)
❑ Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 96,000 km or 72 months after every 24,000 km or
24 months)
❑ Inspect inverter coolant hose
❑Replace climate control air filter
(for evaporator and blower unit)
❑Replace engine oil and filter (216,000 km or 216 months)
❑Add fuel additive *1 (Every 12,000 km or 12 months)
*1: If TOP TIER Detergent Gasoline is not available, one bottle of addi-
tive is recommended. Additives are available from your authorized
Kia dealer along with information on how to use them. Do not mix
other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.

717
Maintenance
240,000 km or 120 months
❑Inspect air conditioning refrigerant
❑Inspect brake fluid
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers and rotors
❑Inspect fuel filter *1
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect HSG belt (240,000 km or 240 months)
❑ Inspect parking brake
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Inspect vapor hose and fuel filler cap
❑Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 96,000 km or 72 months after every 24,000 km or
24 months)
❑ Inspect inverter coolant hose
❑Replace climate control air filter
(for evaporator and blower unit)
❑ Replace air cleaner filter
(Continued)
(Continued)
❑Replace engine oil and filter (240,000 km or 240 months)
❑Replace engine coolant (First, 192,000 km or 120 months
after every 48,000 km or 24 months)
❑Replace inverter coolant (First, 192,000 km or 120 months
after every 48,000 km or 24 months)
❑Add fuel additive *2 (Every 12,000 km or 12 months)
NORMAL MAINTENANCE SCHEDULE (CONT.)
No check, No service required
❑ Automatic transaxle fluid
*1: Fuel filter & Fuel tank air filter are considered to be maintenance
free but periodic inspection is recommended for this maintenance
schedule depends on fuel quality. If there are some important safe-
ty matters like fuel flow restriction, surging, loss of power, hard
starting problem etc, replace the fuel filter immediately regardless
of maintenance schedule and consult an authorized Kia dealer for
details.
*
2: If TOP TIER Detergent Gasoline is not available, one bottle of addi- tive is recommended. Additives are available from your authorized
Kia dealer along with information on how to use them. Do not mix
other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.

Maintenance
20
7
Air cleaner filter
A Genuine Kia air cleaner filter is recom-
mended when the filter is replaced.
Spark plugs
Make sure to install new spark plugs of
the correct heat range.
Valve clearance
Inspect excessive valve noise and/or
engine vibration and adjust if necessary.
An authorized Kia dealer should perform
the operation.
Cooling system
Check cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
Coolant
The engine and inverter 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.
But in severe conditions, the fluid should
be changed at an authorized Kia dealer
in accordance to the scheduled mainte-
nance at the beginning of this chapter.
✽ ✽
NOTICE
Automatic transaxle fluid color is basi-
cally red.
As the vehicle is driven, the automatic
transaxle fluid will begin to look darker.
This is a normal condition and you
should not judge the need to replace the
fluid based upon the changed color.
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake fluid
Check brake fluid level in the brake fluid
reservoir. The level should be between
“MIN” and “MAX” marks on the side of
the reservoir. Use only hydraulic brake
fluid conforming to DOT 3 or DOT 4
specification.
Parking brake
Inspect the parking brake system includ-
ing the parking brake pedal and cables.

Maintenance
24
7
COOLANT
Inverter coolant
The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the fac-
tory.
Check the antifreeze protection and
coolant level everyday.
If it is near or at MIN, add enough coolant
between MIN and MAX and check the
cooling system for air bleed at an author-
ized Kia dealer.
Engine coolant
The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the fac-
tory.
Check the antifreeze protection and
coolant level per every day, at the begin-
ning of the winter season, and before
traveling to a colder climate.
Checking the coolant level
OYFH071070N-1
CAUTION
When adding coolant, be careful
not to overfill.
WARNING
Removing radiator
cap and inverter
coolant cap
Never attempt to remove the radi- ator cap and/or inverter coolant
cap while the engine is operating
or hot. Doing so might lead to
cooling system and engine dam-
age and could result in serious
personal injury from escaping
hot coolant or steam.
(Continued)
CAUTION
Do not confuse the cap of enginecoolant and inverter coolant. If not,the coolant circulation problem ofengine or Hybrid system may occur because the cap pressure is differ-ent.

725
Maintenance
Check the condition and connections of
all cooling system hoses and heater
hoses. Replace any swollen or deterio-
rated hoses.
The coolant level should be filled
between F and L marks on the side of the
coolant reservoir when the engine is
cool.
If the coolant level is low, add enough
distilled (deionized) water to provide pro-
tection against freezing and corrosion.
Bring the level to F, but do not overfill. If
frequent additions are required, see an
authorized Kia dealer for a cooling sys-
tem inspection.
(Continued)
The engine coolant level is influ-enced by hybrid system tempera-
ture. Before filling the engine
coolant and/or inverter coolant,
turn the hybrid vehicle off, fill the
engine coolant and/or inverter
coolant carefully.
Turn the engine off and wait until it cools down. Use extreme care
when removing the radiator cap.
Wrap a thick towel around it, and
turn it counterclockwise slowly to
the first stop. Step back while the
pressure is released from the
cooling system. When you are
sure all the pressure has been
released, press down on the cap,
using a thick towel, and continue
turning counterclockwise to
remove it.
Even if the engine is not operat- ing, do not remove the radiator
cap and/or inverter or the drain
plug while the engine and radia-
tor are hot. Hot coolant and
steam may still blow out under
pressure, causing serious injury.
OYFH071005N
WARNING
The electronic motor
(cooling fan) is con-
trolled by engine
coolant temperature,
refrigerant pressure and
vehicle speed. It may sometimes
operate even when the engine is
not running. Use extreme caution
when working near the blades of
the cooling fan so that you are not
injured by the rotating fan blades.
As the engine coolant temperature
decreases, the electric motor will
automatically shut off. This is a nor-
mal condition.

Maintenance
26
7
Recommended engine and inverter
coolant
When adding coolant, use only deion- ized water or soft water for your vehicle
and never mix hard water in the
coolant filled at the factory. An improp-
er coolant mixture can result in serious
malfunction or engine damage.
The engine in your vehicle has alu- minum engine parts and must be pro-
tected by an ethylene-glycol-based
coolant to prevent corrosion and freez-
ing.
DO NOT USE alcohol or methanol coolant or mix them with the specified
coolant.
Do not use a solution that contains more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution. For mixture percentage, refer to the fol-
lowing table.
-15°C (5°F) 35
65
-25°C (-13°F) 40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40
Ambient
Temperature Mixture Percentage (volume)
Antifreeze Water
OYFH071006N-1/OYFH071070N-1
Radiator cap
Inverter coolant cap

727
Maintenance
Changing the coolant
Have engine and inverter coolant
changed by an authorized Kia dealer
according to the Maintenance Schedule
at the beginning of this section.
WARNING - Coolant
Do not use radiator coolant orantifreeze in the washer fluid
reservoir.
Radiator coolant can severely obscure visibility when sprayed
on the windshield and may cause
loss of vehicle control or damage
to paint and body trim.
CAUTION
Put a thick cloth or fabric aroundthe radiator cap and/or invertercoolant cap before refilling thecoolant in order to prevent thecoolant from overflowing intoengine parts such as the generator.
WARNING
Radiator cap &
Inverter coolant cap
Do not remove the radiator cap
and/or inverter coolant cap when
the engine and radiator are hot.
Scalding hot coolant and steam
may blow out under pressure caus-
ing serious injury.