tow KIA Optima 2007 2.G Service Manual

Maintenance12
7ENGINE COOLING SYSTEM 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 at least once a year, at the
beginning of the winter season, and
before traveling to a colder climate.Checking the coolant level
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
specified coolant to provide protection
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 system inspec-
tion.
WARNING
- Removing
radiator cap
 Never attempt to remove the radi-
ator cap while the engine is oper-
ating or hot. Doing so might lead
to cooling system and engine
damage and could result in seri-
ous personal injury from escap-
ing hot coolant or steam.
(Continued)
(Continued)
 Turn the engine off and wait untilit 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 or the drain plug while the
engine and radiator are hot. Hot
coolant and steam may still blow
out under pressure, causing seri-
ous injury.
OMG075005

Index49Theft-alarm system ··················\
··················\
··················\
··3-6
Tires and wheels··················\
··················\
··················\
·····7-24
Tires pressure monitoring system (TPMS) ···············6-18
Towing ··················\
··················\
··················\
··················\
···6-13
Trailer towing ··················\
··················\
··················\
···········5-9
Trunk··················\
··················\
··················\
··················\
·····3-69
Vehicle break-in process ··················\
··················\
············1-2
Warnings and indicators ··················\
··················\
·········4-30
Window ··················\
··················\
··················\
··················\
·3-14
Windshield defrosting and defogging ··················\
······4-63
Wiper blades··················\
··················\
··················\
···········7-20
Wipers and washers··················\
··················\
·················4-43\
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