2008 KIA Optima maintenance

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IntroductionYour vehicle at a glanceKnowing your vehicleDriving your vehicleDriving tipsIn case of an emergencyMaintenanceSpecificationsIndex
table of contents

361
Knowing your vehicle
Air bag inflation conditionFront air bag
Front air bags (driver’s and front passen-
ger’s air bags) are designed to inflate
when the impact is delivered to front col-
lision sensors depending on the intensity,
speed or angles of impact of the front
collision - generally from an area a little
to the left to a little to the right of straight
ahead.
1JBA3513
WARNING
- Protecting air
bag module and sensors
Do not hit or allow any heavy
objects to hit the locations where
air bags or sensors are installed.
This may cause damage and
unexpected air bag deployment,
which could result in severe per-
sonal injury or death.
If the installation location or
angle of the sensors is altered in
any way, the air bags may deploy
when they should not or they may
not deploy when they should,
causing severe injury or death.
Therefore, do not try to perform
maintenance on or around the air
bag sensors. Have the vehicle
checked and repaired by an
authorized Kia dealer.
WARNING
- Body changes
Problems may arise if the sensor
installation angles are changed
due to the deformation of front
bumper, body or B pillar where
side collision sensors are
installed. In the event of a colli-
sion, have the vehicle inspected
by an authorized Kia dealer.
Your vehicle has been designed
to absorb impact and deploy the
air bag(s) in certain collisions.
Installing aftermarket bumper
guards or replacing a bumper
with non-genuine parts may
adversely affect your vehicles
collision and air bag deployment
performance.

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Knowing your vehicle
Air bag warning lightThe purpose of air bag warning light in
your instrument panel is to alert you of a
potential problem with your air bag -
Supplemental Restraint System (SRS).
When the ignition switch is turned ON,
the indicator light should blink or illumi-
nate for approximately 6 seconds, then
go off.
Have the system checked if:
The light does not turn on briefly when
you turn the ignition ON.
The light stays on after the engine
starts.
The light comes on while the vehicle is
in motion.
Air bag (Supplemental Restraint
System) service Your Supplemental Restraint System is
virtually maintenance-free. There are no
parts which you can service.
You must have the system serviced
under the following circumstances:
If an air bag ever inflates, the air bag
must be replaced. Do not try to remove
or discard the air bag by yourself. This
must be done by an authorized Kia
dealer.
If the air bag warning indicator light
alerts you to a problem, have the air
bag system checked as soon as possi-
ble. Otherwise, your air bag system
may be ineffective.
WARNING
- Children
Never put a child in the front pas-
senger seat, even if they are in a
child restraint. If the front passen-
ger air bag inflates, it may cause
severe or fatal injuries.
When children are seated in the
rear outboard seats in which cur-
tain air bags are equipped, be
sure to put the child restraint sys-
tem as far away from the door
side as possible, and secure the
child restraint system to be
locked in position.
AIR
BAG
CAUTION
- No modification
Do not modify any part of the air
bag system. Modification could
make the air bag system ineffective
or could cause unnecessary
deployment.

Knowing your vehicle68 3Repairing or scrapping the vehicle Repairing/replacing the steering
wheel, instrument panel, center con-
sole headliner/pillar trim, or modifying
vehicle sheet metal components could
disable the air bag system. Have such
repairs and maintenance performed by
an authorized Kia dealer.
Special care must be taken in scrap-
ping or junking an air bag-equipped
vehicle. Always refer such activities to
a qualified professional.
WARNING
- No mainte-
nance or repair
Do not work on the air bag sys-
tem’s components or wiring. This
could cause the air bags to inflate
inadvertently, possibly seriously
injuring someone. Working on the
system could also disable the
system so that the air bags would
not deploy in a collision.
Any work on the air bag system,
such as removing, installing, or
repairing the steering wheel must
be performed by a qualified Kia
technician. Improper handling of
the air bag system including the
steering wheel may result in seri-
ous personal injury or death.
Air bag warning labelAir bag warning labels are attached to alert driver and passengers of potential risk of
air bag system.
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(if equipped)7JBN3519/1MGA3055/OMG035103
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Driving tips4 5BEFORE DRIVING Before entering vehicle: Be sure that all windows, outside mir-
ror(s), and outside lights are clean.
Check the condition of the tires.
Check under the vehicle for any sign of
leaks.
Be sure there are no obstacles behind
you if you intend to back up.Necessary inspections Fluid levels, such as engine oil, engine
coolant, brake fluid, and washer fluid
should be checked on a regular basis,
with the exact interval depending on the
fluid. Further details are provided in
Section 7, Maintenance.
Before starting Close and lock all doors.
Position the seat so that all controls are
easily reached.
Adjust the inside and outside rearview
mirrors.
Be sure that all lights work.
Check all gauges.
Check the operation of warning lights
when the ignition switch is turned to
the ON position.
Release the parking brake and make
sure the brake warning light goes out.
For safe operation, be sure you are famil-
iar with your vehicle and its equipment.
WARNING
- Driving under
the influence of alcohol or
drugs
Drinking and driving is dangerous.
Drunk driving is the number one
contributor to the highway death
toll each year. Even a small amount
of alcohol will affect your reflexes,
perceptions and judgement. Driving
while under the influence of drugs
is as dangerous or more dangerous
than driving drunk.
You are much more likely to have a
serious accident if you drink or take
drugs and drive.
If you are drinking or taking drugs,
don’t drive. Do not ride with a driv-
er who has been drinking or taking
drugs. Choose a designated driver
or call a cab.

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Driving tips
SUGGESTIONS FOR ECONOMICAL OPERATIONYour vehicle's fuel economy depends
mainly on your style of driving, where you
drive and when you drive.
Each of these factors affects how many
kilometers (miles) you can get from a liter
(gallon) of fuel. To operate your vehicle
as economically as possible, use the fol-
lowing driving suggestions to help save
money in both fuel and repairs:
Avoid lengthy warm-up idling. Once the
engine is running smoothly, begin driv-
ing. Remember, engine warm-up may
take a little longer on cold days.
Save fuel by accelerating slowly after
stopping.
Keep the engine in tune and follow the
recommended periodic maintenance
schedule. This will increase the life of
all parts and lower your operating
costs.
Do not use the air conditioner unnec-
essarily.
Slow down when driving on rough
roads.
For longer tire life and better fuel econ-
omy, always keep the tires inflated to
the recommended pressures. Maintain a safe distance from other
vehicles to avoid sudden stops. This
will reduce wear on brake linings and
pads. Driving in such a way will also
save fuel because extra fuel is required
to accelerate back to driving speed.
Do not carry unnecessary weight in the
vehicle.
Do not rest your foot on the brake
pedal while driving. This can cause
needless wear, possible damage to the
brakes, and poor fuel economy.
Improper wheel alignment results in
faster tire wear and lower fuel econo-
my.
Open windows at high speeds can
reduce fuel economy.
Fuel economy is less in crosswinds
and headwinds. To help offset some of
this loss, slow down when driving in
these conditions.
Keeping a vehicle in good operating con-
dition is important both for economy and
safety. Therefore, have an authorized Kia
dealer perform scheduled inspections
and maintenance.
WARNING
- Engine off dur-
ing motion
Never turn the engine off to coast
down hills or anytime the vehicle is
in motion. The power steering and
power brakes will not function
properly without the engine run-
ning. Instead, keep the engine on
and downshift to an appropriate
gear for engine braking effect.

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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.

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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