cooling system KIA Optima 2006 2.G User Guide

7-3
MAINTENANCE SCHEDULEEngine Control systemI: Inspect these items and their related parts. If necessary,
Check the engine oil and coolant levels every week.
R: Replace or change.
NOTE :
Check the engine oil and coolant levels every week.
Kilometers or Time in Months, Whichever Comes First
km 8 16 24 32 40 48 56 64 72 80 88 96 104 112 120 128Months 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64
Engine oil & engine oil filter R R R R R R R R R R R R R R R R
Drive belts (tension)III I
Cooling system hoses & connectionsIIII I
Engine coolant II IIIRIIIIIRIIII
Fuel filterR
Fuel tank cap, lines, EVAP canister and hosesII
Fuel tank air filterIRIR I
Air cleaner element II IIIRIIIIIRIIII
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM
x 1,000
(1)
(1)
(2)
(1) Refer to the lubricant and coolant specifications in the Owner’s Manual.
(2) More frequent maintenance is required if driving under dusty conditions.
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MAINTENANCE
7-14ENGINE COOLING
SYSTEMThe cooling system is a high-pressure
type with a reservoir and is filled with
year-round antifreeze coolant at the
factory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and
before traveling to a colder climate.
CHECKING THE
COOLANT LEVEL
WARNING - Removing
Radiator Cap
 Never attempt to remove the
radiator cap while the engine
is operating. Doing so might
lead to cooling system
and/or engine damage and
could result in serious
personal injury from
escaping hot coolant or
steam.
 Turn the engine off and wait
until it has cooled. Even then,
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
operating, do not remove the
radiator cap or the drain plug
while the engine and radiator
are hot. Hot coolant and
steam may still blow out
under pressure, causing
serious injury.
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7-15
Check the condition and connections of
all cooling system hoses and heater
hoses. Replace any swollen or
deteriorated hoses.
The coolant level should be full in the
radiator and between F (Full) and L
(Low) on the coolant reservoir tank
when the engine is cool.If the coolant level is low, add enough
specified coolant to provide protection
against freezing and corrosion and to
bring the level to F in the coolant
reservoir. Do not overfill. If frequent
additions are required, see an Authorized
Kia Dealer for a cooling system
inspection.
CHANGING COOLANTChange coolant according to the
Scheduled Maintenance.
• Use only soft (de-mineralized) water
in the coolant mixture.
• The engine in your vehicle has
aluminum engine parts and must be
protected by an ethylene glycol-
based coolant to prevent corrosion
and freezing.
• DO NOT USE alcohol or methanol
coolant and do not mix them with the
specified coolant.•Do not use a solution that contains
more than 60% coolant or less than
35% coolaut, which would reduce
the effectiveness of the solution.
For mixture percen-tages, refer to the
following table.
1. Turn the radiator cap counterclockwise
and remove it.
2. Loosen the radiator drain plug and
drain the coolant into a suitable
container.
MMSA7005
Coolant reservoir tank
-15°C (5°F) 35 65
-25°C (-13°F) 40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40Ambient
TemperatureMixture Percentage (volume)
Coolant
SolutionWater
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9
INDEX
9-1
A
ir Bag - Supplemental Restraint System ................................3-42
Air Cleaner ..................................................................................7-21
Antenna .......................................................................................3-68
Automatic Heating and Cooling Control System .......................4-47
Automatic Transaxle ............................................................4-7, 7-19
B
attery.......................................................................................7-23
Before Driving ..............................................................................5-4
Brake System ..............................................................................4-12
Brakes and Clutch .......................................................................7-17
Bulb Replacement .......................................................................7-32
C
hanging tires ..........................................................................6-22
Climate Control System ..............................................................4-42
Cruise Control .............................................................................4-37
Cup Holders and Console Storage Compartment .......................3-63
D
oor Locks .................................................................................3-9
E
lectrical Circuit Protection .......................................................6-7
Emergency Starting .......................................................................6-3
Emission Control System ..............................................................5-3
Engine Compartment ..................................................................7-10
Engine Cooling System...............................................................7-14
Engine Oil and Oil Filter .............................................................7-12
Exterior Care ...............................................................................7-38
F
uel Filler Lid ...........................................................................3-55
Fuel Requirements ........................................................................5-2
G
auges ......................................................................................4-20
H
eadlight Aiming Adjustment .................................................7-42
Homelink® Wireless Control System.........................................5-12
Hood ............................................................................................3-54
How To Use This Manual .............................................................1-2
If You Have a Flat Tire .............................................................6-19
Ignition Switch ..............................................................................4-2
Immobilizer System ......................................................................3-6
Instrument Cluster .......................................................................4-19
Instrument Panel Overview ...........................................................2-3
Interior and Exterior Overview .....................................................2-2
Interior Care ................................................................................7-40
Interior Features ..........................................................................4-33
Interior Lights .............................................................................3-62K
eyless entry system .................................................................3-4
Keys ..............................................................................................3-3
L
abel Information .....................................................................5-11
Lightings .....................................................................................4-27
Lubricant Specifications .............................................................7-36
Lubricants and Fluids ..................................................................7-20
Luggage Net ................................................................................3-69
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