service KIA Optima 2008 2.G User Guide

Driving your vehicle54 4Air conditioning system opera-
tion tips If the vehicle has been parked in direct
sunlight during hot weather, open the
windows for a short time to let the hot
air inside the vehicle escape.
To help reduce moisture inside of win-
dows on rainy or humid days, decrease
the humidity inside the vehicle by oper-
ating the air conditioning system.
During air conditioning system opera-
tion, you may occasionally notice a
slight change in engine speed as the
air conditioning compressor cycles.
This is a normal system operation
characteristic.
Use the air conditioning system every
month if only for a few minutes to
ensure maximum system perform-
ance.
When using the air conditioning sys-
tem, you may notice clear water drip-
ping (or even pudding) on the ground
under the passenger side of the vehi-
cle. This is a normal system operation
characteristic. Operating the air conditioning system
in the recirculated air position does
provide maximum cooling, however,
continual operation in this mode may
cause the air inside the vehicle to
become stale.
Checking the amount of air con-
ditioner refrigerant and compres-
sor lubricantWhen the amount of refrigerant is low,
the performance of the air conditioning is
reduced. Overfilling also has a bad influ-
ence on the air conditioning system.
Therefore, if abnormal operation is
found, have the system inspected by an
authorized Kia dealer.✽ ✽
NOTICEWhen the performance of the air condi-
tioning system is reduced it is important
that the correct type and amount of oil
and refrigerant is used. Otherwise, dam-
age to the compressor and abnormal
system operation may occur.
CAUTION
The air conditioning system should
be serviced by an authorized Kia
dealer. Improper service may cause
serious injury to the person per-
forming the service.

Driving your vehicle62 4Air conditioning system opera-
tion tips If the vehicle has been parked in direct
sunlight during hot weather, open the
windows for a short time to let the hot
air inside the vehicle escape.
To help reduce moisture inside of win-
dows on rainy humid days, decrease
the humidity inside the vehicle by oper-
ating the air conditioning system.
During air conditioning system opera-
tion, you may occasionally notice a
slight change in engine speed as the
air conditioning compressor cycles on.
This is a normal system operation
characteristics.
Use the air conditioning system every
month if only for a few minutes to
ensure maximum system perform-
ance.
When using the air conditioning sys-
tem, you may notice clear water drip-
ping (or even pudding) on the ground
under the passenger side of the vehi-
cle. This is a normal system operation
characteristics. Operating the air conditioning system
in the recirculated air position does
provide maximum cooling, however,
continual operation in this mode may
cause the air inside the vehicle to
become stale.
✽ ✽
NOTICEWhen using the air conditioning system,
monitor the temperature gauge closely
while driving up hills or in heavy traffic
when outside temperatures are high. Air
conditioning system operation may
cause engine overheating. Continue to
use the blower fan but turn the air con-
ditioning system off if the temperature
gauge indicates engine overheating.
Checking the amount of air con-
ditioner refrigerant and compres-
sor lubricantWhen the amount of refrigerant is low,
the performance of the air conditioning is
reduced. Overfilling also has a bad influ-
ence on the air conditioning system.
Therefore, if abnormal operation is
found, have the system inspected by an
authorized Kia dealer.✽ ✽
NOTICEWhen the performance of the air condi-
tioning system is reduced it is important
that the correct type and amount of oil
and refrigerant is used. Otherwise, dam-
age to the compressor and abnormal
system operation may occur.
CAUTION
The air conditioning system should
be serviced by an authorized Kia
dealer. Improper service may cause
serious injury.

513
Driving tips
When you are ready to leave after
parking on a hill 1. With the automatic transaxle in P
(Park), apply your brakes and hold the
brake pedal down while you:

and

2. Slowly remove your foot from the
brake pedal.
3. Drive slowly forward until the trailer is
clear of the chocks.
4. Stop and have someone pick up and
store the chocks.Maintenance when trailer towing Your vehicle will need service more often
when you regularly pull a trailer.
Important items to pay particular atten-
tion to include engine oil, automatic
transaxle fluid, axle lubricant and cooling
system fluid. Brake condition is another
important item to frequently check. Each
item is covered in this manual, and the
Index will help you find them quickly. If
you’re trailering, it’s a good idea to review
these sections before you start your trip.Don’t forget to also maintain your trailer
and hitch. Follow the maintenance
schedule that accompanied your trailer
and check it periodically. Preferably, con-
duct the check at the start of each day’s
driving. Most importantly, all hitch nuts
and bolts should be tight.
✽ ✽
NOTICE• Due to higher load during trailer
usage, overheating might occur in hot
days or during uphill driving. If the
coolant gauge indicates over-heating,
switch off the A/C and stop the vehicle
in a safe area to cool down the engine.
• When towing check transaxle fluid
more frequently.
• If your vehicle is not equipped with
the air conditioner, you should install
a condenser fan to improve engine
performance when towing a trailer.
If you do decide to pull a trailerHere are some important points if you
decide to pull a trailer:
Consider using a sway control. You can
ask a hitch dealer about sway control.
After your odometer indicates 800 km
(500 miles) or more, you can tow a
trailer. For the first 800 km (500 miles)
that you tow a trailer, don’t drive over
80 km/h (50 mph) and don’t make
starts at full throttle. This helps your
engine and other parts of your vehicle
“wear” in at the heavier loads.
Always drive your vehicle at a moder-
ate speed (less than 100 km/h (60
mph)).
On a long uphill grade, do not exceed
70 km/h (45 mph) or the posted towing
speed limit, whichever is lower.
The important considerations have to
do with weight:
Weight of the trailer
How heavy can a trailer safely be? It
should never weigh more than the maxi-
mum trailer weight with trailer brakes. But
even that can be too heavy. If you feel that
the trailer is adversely affecting the move-
ment of your vehicle, reduce your speed,
avoid uneven or winding roads, avoid
roads with steep grades, and/or lighten
your trailer load.

63
In case of an emergency
4. The coolant level should then be
checked. If the level in the reservoir is
low, look for leaks at the radiator hoses
and connections, heater hoses and
connections, radiator, and water
pump. If you find a major leak or anoth-
er problem that may have caused the
engine to overheat, do not operate the
engine until it has been corrected. Call
an authorized Kia dealer for assis-
tance. If you do not find a leak or other
problem, carefully add coolant to the
reservoir.If the engine frequently overheats, have
the cooling system checked and repaired
by an authorized Kia dealer.
Jump starting Jump starting can be dangerous if done
incorrectly. Therefore, to avoid harm to
yourself or damage to your vehicle or
battery, follow the jump starting proce-
dures. If in doubt, we strongly recom-
mend that you have a competent techni-
cian or towing service jump start your
vehicle.✽ ✽
NOTICEUse only a 12-volt jumper system. You
can damage a 12-volt starting motor,
ignition system, and other electrical
parts beyond repair by use of a 24-volt
power supply (either two 12-volt batter-
ies in series or a 24-volt motor generator
set).
WARNING
- Removing
radiator cap
Do not remove the radiator cap
when the engine and radiator are
hot. Scalding hot coolant and steam
may blow out under pressure. This
could cause serious injury.
EMERGENCY STARTING
WARNING
- Battery
• Keep all flames or sparks away
from the battery. The battery pro-
duces hydrogen gas which may
explode if exposed to flame or
sparks.
 Do not attempt to jump start the
vehicle if the discharged battery
is frozen or if the electrolyte level
is low; the battery may rupture or
explode.
WARNING
- Battery
Never attempt to check the elec-
trolyte level of the battery as this
may cause the battery to rupture or
explode causing serious injury.

613
In case of an emergency
TOWINGIf emergency towing is necessary, we
recommend having it done by an author-
ized Kia dealer or a commercial tow-truck
service. Proper lifting and towing proce-
dures are necessary to prevent damage
to the vehicle. The use of wheel dollies or
flatbed equipment is recommended.For trailer towing guidelines information,
refer to section 5 “Driving Tips”.
It is acceptable to tow the vehicle with the
rear wheels on the ground (without dol-
lies) and the front wheels off the ground.
When being towed by a commercial tow
truck and wheel dollies are not used, the
front of the vehicle should always be lift-
ed, not the rear.
✽ ✽
NOTICE• Do not tow the vehicle backwards
with the front wheels on the ground as
this may cause damage to the vehicle.
• Do not tow with sling-type equipment.
Use wheel lift or flatbed equipment.
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615
In case of an emergency
Front towing hook1. Open the trunk lid, and remove the
towing hook from the tool bag.
2. Remove the hole cover pressing the
lower part of the cover on the front
bumper (1).3. Install the towing hook by turning it
clockwise into the hole until it is fully
secured (2).
4. Remove the towing hook and install
the cover after use.
Towing with a vehicle other than
a tow truck If towing is necessary, we recommend
you to have it done by an authorized Kia
dealer or a commercial tow truck service.
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 Front Rear

In case of an emergency16 6If towing service is not available in an
emergency, your vehicle may be tem-
porarily towed using a cable or chain
secured to the emergency towing hook
under the front or rear of the vehicle. Use
extreme caution when towing the vehicle.
A driver must be in the vehicle to steer it
and operate the brakes.
Towing in this manner may be done only
on hard-surfaced roads for a short dis-
tance and at low speeds. Also, the
wheels, axles, power train, steering and
brakes must all be in good condition.
 Do not use the tow hooks to pull a vehi-
cle out of mud, sand or other condi-
tions from which the vehicle cannot be
driven out under its own power.
 Avoid towing a vehicle heavier than the
vehicle doing the towing.
 The drivers of both vehicles should com-
municate with each other frequently.✽ ✽
NOTICE• Attach a towing strap to the tow hook.
• Using a portion of the vehicle other
than the tow hooks for towing may
damage the body of your vehicle.
• Use only a cable or chain specifically
intended for use in towing vehicles.
Securely fasten the cable or chain to
the towing hook provided.
 Before emergency towing, check that
the hook is not broken or damaged.
 Fasten the towing cable or chain
securely to the hook.
 Do not jerk the hook. Apply steady and
even force.
 To avoid damaging the hook, do not
pull from the side or at a vertical angle.
Always pull straight ahead.
 Use a towing strap less than 5 m (16
feet) long. Attach a white or red cloth
(about 30 cm (12 inches) wide) in the
middle of the strap for easy visibility.
 Drive carefully so that the towing strap
is not loosened during towing.
CAUTION
Use extreme caution when towing
the vehicle.
 Avoid sudden starts or erratic
driving maneuvers which would
place excessive stress on the
emergency towing hook and tow-
ing cable or chain. The hook and
towing cable or chain may break
and cause serious injury or dam-
age.
 If the towing vehicle does not move
easily, do not forcibly continue the
towing. Contact an authorized Kia
dealer or a commercial tow truck
service for assistance.
 Tow the vehicle as straight ahead
as possible.
 Keep away from the vehicle dur-
ing towing.
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In case of an emergency20 6Changing tires Jacking instructions The jack is provided for emergency
tire changing only.
Follow jacking instructions to reduce
the possibility of personal injury.
Tire replacement 1. Park on a level surface and apply
the parking brake firmly.
2. Shift the shift lever into R
(Reverse) with manual transaxle
or P (Park) with automatic
transaxle.
3. Activate the hazard warning flash-
er.
WARNING
- Changing
tires
 Never attempt vehicle repairs
in the traffic lanes of a public
road or highway.
 Always move the vehicle com-
pletely off the road and onto
the shoulder before trying to
change a tire. The jack should
be used on level firm ground.
If you cannot find a firm, level
place off the road, call a tow-
ing service company for
assistance.
 Be sure to use the correct
front and rear jacking posi-
tions on the vehicle; never use
the bumpers or any other part
of the vehicle for jack support.
(Continued)
(Continued)
 The vehicle can easily roll off
the jack causing serious
injury or death. No person
should place any portion of
their body under a vehicle that
is supported only by a jack.
 Do not start or run the engine
while the vehicle is on the
jack.
 Do not allow anyone to remain
in the vehicle while it is on the
jack.
 Make sure any children pres-
ent are in a secure place away
from the road and from the
vehicle to be raised with the
jack.
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In case of an emergency22 67. Place the jack at the front or rear
jacking position closest to the tire
you are changing. Place the jack
at the designated locations under
the frame. The jacking positions
are plates welded to the frame
with two tabs and a raised dot to
index with the jack.8. Insert the jack handle into the jack
and turn it clockwise, raising the
vehicle until the tire just clears the
ground. This measurement is
approximately 30 mm (1.2 in).
Before removing the wheel lug
nuts, make sure the vehicle is sta-
ble and that there is no chance for
movement or slippage.
9. Remove the wheel lug nuts by
turning them counterclockwise,
then remove the wheel.
10. Mount the spare tire into position
and install the wheel lug nuts
with the beveled edge inward.11. Once the wheel lug nuts have
been tightened, lower the vehicle
fully to the ground and continue to
tighten the lug nuts until they are
fully secured. Tighten the wheel
lug nuts firmly in a “star” pattern.
If you are unsure of the tightness
of the wheel lug nuts, have them
checked at the nearest service
station. The specified tightening
torque is 9~11 kgm (65-79 lbft,
88-107 Nm). Improperly tight-
ened wheel lug nuts could cause
brake pedal vibration while brak-
ing.
WARNING
- Jack location
To reduce the possibility of
injury, be sure to use only the
jack provided with the vehicle
and in the correct jack position;
never use any other part of the
vehicle for jack support.
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7
Maintenance services / 7-2
Maintenance schedule / 7-3
Owner maintenance / 7-7
Engine compartment / 7-9
Engine oil / 7-11
Engine cooling system / 7-12
Brake fluid / 7-14
Drive belts / 7-15
Power steering / 7-15
Automatic transaxle / 7-16
Lubricants and fluids / 7-17
Air cleaner / 7-18
Climate control air filter / 7-19
Wiper blades / 7-20
Battery / 7-21
Tires and wheels / 7-24
Lubricant specifications / 7-35
Exterior care / 7-36
Interior care / 7-38
Maintenance