engine oil KIA Optima 2007 2.G Owner's Manual

Your vehicle at a glance42ENGINE COMPARTMENT
OMG075002
1. Engine coolant reservoir ...................7-12
2. Engine oil filler cap............................7-11
3. Brake fluid reservoir ..........................7-14
4. Air cleaner .........................................7-18
5. Fuse box ...........................................6- 8
6. Negative battery terminal ...........6-4/7-21
7. Positive battery terminal .............6-4/7-21
8. Auto transaxle oil dipstick* ................7-16
9. Radiator cap......................................7-13
10. Engine oil dipstick ...........................7-11
11. Power steering fluid reservoir .........7-15
12. Windshield washer fluid reservoir ...7-17
* : if equipped

Knowing your vehicle83Your vehicle is equipped with an elec-
tronic engine immobilizer system to
reduce the risk of unauthorized vehicle
use.
Your immobilizer system is comprised of
a small transponder in the ignition key,
and antenna coil in the key cylinder and
ICU (Immobilizer Control Unit) in the
steering shaft.
With this system, whenever you insert
your ignition key into the ignition switch
and turn it to ON, the antenna coil in the
ignition switch receives a signal from the
transponder in the ignition key and then
sends the signal to the ECU (Engine
Control Unit).
The ECU checks the signal whether the
ignition key is valid.
If the key is determined to be valid, the
engine will start.
If the key is determined to be invalid, the
engine will not start.
To deactivate the immobilizer
system:Insert the ignition key into the key cylin-
der and turn it to the ON position.To activate the immobilizer sys-
tem:Turn the ignition key to the OFF position.
The immobilizer system activates auto-
matically. Without a valid ignition key for
your vehicle, the engine will not start.✽ ✽NOTICEWhen starting the engine, do not use the
key with other immobilizer keys around.
Otherwise the engine may not start or
may stop soon after it starts. Keep keys
separate to avoid immobilizer malfunc-
tions.
Limp home (override) procedureWhen you turn the ignition key to the ON
position, if the IMMO indicator goes off
after blinking 5 times, your transponder
equipped in the ignition key is out of order.
You cannot start the engine without the
lime home procedure. To start the engine,
you have to input your password by using
the ignition switch.
The following procedure is how to input
your password of “2345” as an example.
1. Turn the ignition key to the ON position.
The IMMO indicator ( ) will blink 5
times and go off indicating the begin-
ning of the limp home procedure.
2. Turn the ignition key to the ACC posi- tion.
3. To enter the first digit (in this example “2”), turn the ignition key to the ON and
ACC position twice. Perform the same
procedure for the next digits between 3
seconds and 10 seconds (for example,
for “3”, turn the ignition ON and ACC 3
times).
IMMOBILIZER SYSTEM (IF EQUIPPED)

Driving your vehicle30
4Warning lights / audible indicators Checking operation All warning lights are checked by turning
the ignition switch ON (do not start the
engine). Any light that does not illuminate
should be checked by an authorized Kia
dealer.
After starting the engine, check to make
sure that all warning lights are off. If any
are still on, this indicates a situation that
needs attention. When releasing the
parking brake, the brake system warning
light should go off. The fuel warning light
will stay on if the fuel level is low.Anti-lock brake system
(ABS) warning light (if
equipped) This light illuminates if the key is turned
to ON and goes off in approximately 3
seconds if the system is operating nor-
mally.
If the light stays on, you may have a
problem with your ABS. Contact an
authorized Kia dealer as soon as possi-
ble.
Electronic brake force
distribution (EBD) sys-
tem warning
(if equipped)If ABS and BRAKE warning lights illumi-
nate at the same time while driving, your
vehicle has a problem with the ABS and
EBD system.
In this case, your ABS and regular brake
system may not work normally. Have the
vehicle checked by an authorized Kia
dealer as soon as possible.
Engine oil pressure
warning This warning light indicates the engine oil
pressure is low.
If the warning light illuminates while driv-
ing:
1. Drive safely to the side of the road and
stop.
2. With the engine off, check the engine oil level. If the level is low, add oil as
required.
If the warning light remains on after
adding oil or if oil is not available, call an
authorized Kia dealer.✽ ✽ NOTICEIf the engine is not stopped immediately,
severe damage could result.
WARNINGS AND INDICATORS
ABS
ABS
WARNING
- Brake indica-
tors
If the both ABS and Brake warning
lights are ON and stay ON, your
vehicle’ s brake system will not work
normally. You may experience an
unexpected and dangerous situa-
tion during sudden braking. In this
case, avoid high speed driving and
abrupt braking. Have your vehicle
checked by Authorized Kia Dealer
as soon as possible.

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 Kiadealer. 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 causeserious injury.

Driving tips45BEFORE 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 areeasily 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.

57
Driving tips
Driving at night Because night driving presents more
hazards than driving in the daylight, here
are some important tips to remember:
 Slow down and keep more distancebetween you and other vehicles, as it
may be more difficult to see at night,
especially in areas where there may
not be any street lights.
 Adjust your mirrors to reduce the glare from other driver's headlights.
 Keep your headlights clean and prop- erly aimed on vehicles not equipped
with the automatic headlight aiming
feature. Dirty or improperly aimed
headlights will make it much more diffi-
cult to see at night.
 Avoid staring directly at the headlights of oncoming vehicles. You could be
temporarily blinded, and it will take
several seconds for your eyes to read-
just to the darkness.
Driving in the rain Rain and wet roads can make driving
dangerous, especially if you’re not pre-
pared for the slick pavement. Here are a
few things to consider when driving in the
rain:
 A heavy rainfall will make it harder tosee and will increase the distance
needed to stop your vehicle, so slow
down.
 Keep your windshield wiping equip- ment in good shape. Replace your
windshield wiper blades when they
show signs of streaking or missing
areas on the windshield.
 If your tires are not in good condition, making a quick stop on wet pavement
can cause a skid and possibly lead to
an accident. Be sure your tires are in
good shape.
 Turn on your headlights to make it eas- ier for others to see you.
 Driving too fast through large puddles can affect your brakes. If you must go
through puddles, try to drive through
them slowly.
 If you believe you may have gotten your brakes wet, apply them lightly
while driving until normal braking oper-
ation returns.
Winter driving We recommend that you carry emer-gency equipment, including a window
scraper, windshield de-icer, a bag of
sand or salt, flares, a small shovel and
jumper cables.
 Make sure you have sufficient ethyl- ene-glycol coolant in the radiator.
 Check the battery condition and cables. Cold temperatures reduce the
output capability of any battery, so it
must be in excellent condition to pro-
vide enough winter starting power.
 Make sure the engine oil viscosity is suitable for cold weather.
 Check the ignition system for loose connections and damage.
 Use antifreeze-formulated windshield washer fluid. (Do not use engine
coolant antifreeze.)
 Do not use the parking brake if it might freeze. When parking, shift to 1 (First)
or R (Reverse) with a manual transaxle
or P (Park) with an automatic transaxle
and block the rear wheels.

513
Driving tips
When you are ready to leave afterparking on a hill 1. With the automatic transaxle in P (Park), apply your brakes and hold the
brake pedal down while you:
 Start your engine;
 Shift into gear; and
 Release the parking brake.
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.

In case of an emergency26ROAD WARNING Hazard warning flasher The hazard warning flasher serves as a
warning to other drivers to exercise
extreme caution when approaching,
overtaking, or passing your vehicle. It
should be used whenever emergency
repairs are being made or when the vehi-
cle is stopped near the edge of a road-
way.
Depress the flasher switch with the igni-
tion switch in any position. The flasher
switch is located in the center console
switch panel. All turn signal lights will
flash simultaneously.• The hazard warning flasher operates
whether your vehicle is running or not.
 The turn signals do not work when the hazard flasher is on.
 Care must be taken when using the hazard warning flasher while the vehi-
cle is being towed. If your temperature gauge indicates over-
heating, if you experience a loss of
power, or if you hear a loud knocking or
pinging noise, the engine has probably
overheated. Should any of these symp-
toms occur, use the following procedure:
1. Turn on the hazard warning flasher,
then drive to the nearest safe location
and stop your vehicle; set the automat-
ic transaxle in P (Park), or shift the
manual transaxle to N (Neutral) and
apply the parking brake.
2. Make sure the air conditioner is off.
3. If coolant or steam is boiling out of the radiator, stop the engine and call an
authorized Kia dealer for assistance.
If coolant is not boiling out, allow the
engine to idle and open the hood to
permit the engine to cool gradually.
If the temperature does not go down
with the engine idling, stop the engine
and allow sufficient time for it to cool.
OVERHEATING
OMG065001

In case of an emergency10
6
OMG065007
Driver-side knee bolster
Description Fuse rating Protected component
BACK UP 10A Back-up light
RR HTD 40A Rear window defroster
IGN 1 30A Ignition
B+ 30A In pannel B
+
TAIL20A Taillight
A/CON 10A Air conditioner
ECU-1 20A Engine control unit
IGN COIL 20A Ignition coil
SNSR 3 10A Sensors
BLOWER 40A Blower
IGN 2 30A Ignition
SNSR 2 15A Sensors
SNSR 1 15A Sensors
HORN RELAY - Horn relay
HDLP_LOW RELAY - Headlight (low) relay
RAD FAN_HI RELAY - Radiator fan relayRAD FAN_LOW RELAY
- Radiator fan relay
F/PUMP RELAY - Fuel pump relay
WIPER RELAY - Wiper relay
MAIN RELAY - Main relay
START RELAY - Start motor relay
ATM CONT RELAY - Automatic transaxle control relay
A/CON RELAY - Air conditioner relay
* : if equipped