2007 KIA Optima check engine

Driving your vehicle16
4Power steering (if equipped)Power steering uses energy from the
engine to assist you in steering the vehi-
cle. If the engine is off or if the power
steering system becomes inoperative,
the vehicle may still be steered, but it will
require increased steering effort.
Should you notice any change in the
effort required to steer during normal
vehicle operation, have the power steer-
ing checked by an authorized Kia dealer.✽ ✽
NOTICE• Never hold the steering wheel against
a stop (extreme right or left turn) for
more than 5 seconds with the engine
running. Holding the steering wheel
for more than 5 seconds in either posi-
tion may cause damage to the power
steering pump.
• If the power steering drive belt breaks or if the power steering pump mal-
functions, the steering effort will
greatly increase.
✽ ✽ NOTICEIf the vehicle is parked for extended
periods outside in cold weather (below -
10 °C/14 °F), the power steering may
require increased effort when the engine
is first started. This is caused by
increased fluid viscosity due to the cold
weather and does not indicate a mal-
function.
When this happens, increase the engine
RPM by depressing the accelerator until
the RPM reaches 1,500 rpm then release
or let the engine idle for two or three
minutes to warm up the fluid.
Tilt and telescopic steering
(if equipped)A tilt and telescopic steering wheel
allows you to adjust the steering wheel
before you drive. You can also raise it to
the highest level to give your legs more
room when you exit and enter the vehi-
cle.
The steering wheel should be positioned
so that it is comfortable for you to drive,
while permitting you to see the instru-
ment panel warning lights and gauges.
STEERING WHEEL
WARNING -
Steering wheel
Never adjust the angle of steering
wheel while driving. You may lose
your steering control and cause
severe personal injury or acci-
dents.
 After adjusting, push the steering
wheel both up and down to be
certain it is locked in position.

421
Driving your vehicle
The Electronic Stability Control (ESC)
monitors information from various vehicle
sensors and then compares the driver's
commands with the actual behavior of the
vehicle. If an unstable condition occurs - a
sudden evasive movement for example -
ESC intervenes within fractions of a
second via the engine computer and
brake system and attempts to stabilize
the vehicle.
ESC operationESC ON condition
 When the ignition is turnedON, ESC and ESC OFF indi-
cator lights illuminate for
approximately 3 seconds,
then ESC is turned on.
 Press the ESC OFF button for at least half a second after
turning the ignition ON to turn
ESC off. (ESC OFF indicator
will illuminate). To turn the
ESC on, press the ESC OFF
button (ESC OFF indicator
light will go off).
 When starting the engine, you may hear a slight ticking
sound. This is the ESC per-
forming an automatic system
self-check and does not indi-
cate a problem.
When operating
When the ESC is in operation,
ESC indicator light blinks.
 When the Electronic StabilityControl is operating properly,
you can feel a slight pulsation
in the vehicle. This is only the
effect of brake control and
indicates nothing unusual.
 When moving out of the mud or slippery road, pressing the
accelerator pedal may not
cause the engine rpm (revo-
lutions per minute) to
increase.
ELECTRONIC STABILITY CONTROL (IF EQUIPPED)
OMG045013N
-
ESC

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.

431
Driving your vehicle
Charging system
warning This warning light indicates a malfunction
of either the generator or electrical
charging system.
If the warning light comes on while the
vehicle is in motion:
1. Drive to the nearest safe location.
2. With the engine off, check the genera-tor drive belt for looseness or break-
age.
3. If the belt is adjusted properly, a prob- lem exists somewhere in the electrical
charging system. Have an authorized
Kia dealer correct the problem as soon
as possible.
Safety belt warning As a reminder to the driver and passen-
ger, safety belt warning light will blink for
approximately 6 seconds each time you
turn the ignition switch ON.
If the driver's lap/shoulder belt is not fas-
tened when the key is turned ON or if it is
disconnected after the key is turned ON,
the safety belt warning light will blink for
approximately 6 seconds.
If the driver’s lap/shoulder belt is not fas-
tened when you drive over 10 km/h, the
safety belt warning light will blink for 6
seconds. This cycle will repeat 11 times
with an interval of 24 seconds between
cycles.
If the system does not operate as
described, see an authorized Kia dealer
for assistance.Shift pattern indicators
(if equipped)The individual indicators illuminate to
show the automatic transaxle shift lever
selection.
Hot temperature
warning (if equipped)This warning light illuminates if the tem-
perature of the engine coolant is hot.
Do not continue driving with an overheat-
ed engine. If your vehicle overheats, refer
to “Overheating” in the Index.✽ ✽NOTICEIf the hot temperature indicator illumi-
nates, it indicates overheating that may
damage the engine.Immobilizer indicator
(if equipped)This light illuminates when the immobiliz-
er key is inserted and turned to the ON
position to start the engine.
At this time, you can start the engine. The
light goes out after the engine is running.
In case this light goes out before you
start the engine, you must turn to the
LOCK position and restart the engine.
If this light blinks when the ignition switch
is in the ON position before starting the
engine, have the system checked by an
authorized Kia dealer.

Driving your vehicle32
4Parking brake & brake
fluid warning Parking brake warning This light is illuminated when the parking
brake is applied with the ignition switch in
the START or ON position. The warning
light should go off when the parking
brake is released.Low brake fluid level warningIf the warning light remains on, it may
indicate that the brake fluid level in the
reservoir is low.
If the warning light remains on:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. With the engine stopped, check the brake fluid level immediately and add
fluid as required. Then check all brake
components for fluid leaks.
3. Do not drive the vehicle if leaks are found, the warning light remains on or
the brakes do not operate properly.
Have it towed to any authorized Kia
dealer for a brake system inspection
and necessary repairs.
To check bulb operation, check whether
the parking brake and brake fluid warning
light illuminates when the ignition switch
is in the ON position.
Trunk lid open
warning (if equipped)This warning light activates when the
trunk is not closed securely.Door ajar warningThis warning light illuminates when a
door is not closed securely.Low washer fluid level
warning indicator
(if equipped)This warning light indicates the washer
fluid reservoir is near empty. Refill the
washer fluid as soon as possible.
Low fuel level
warningThis warning light indicates the fuel tank
is nearly empty. The warning light will
come on when the fuel level has dropped
to about 7~8 liters (1.8~2.1 gallons).
Refuel as soon as possible.Headlight high beam
indicator This indicator illuminates when the head-
lights are on and in the high beam posi-
tion or when the turn signal lever is pulled
into the Flash-to-Pass position.Air bag warning
(if equipped) This warning light will blink or illuminate
for approximately 6 seconds each time
you turn the ignition switch to the ON
position.
If this indicator does not go out, or if it illu-
minates while the vehicle is being driven,
see an authorized Kia dealer for immedi-
ate service.
WARNING
Driving the vehicle with a brake
warning light on is dangerous. If the
brake warning light remains on,
have the brakes checked and
repaired immediately by an author-
ized Kia dealer.
AIR
BAG

433
Driving your vehicle
Malfunction indicator
(if equipped)This indicator light is part of the Engine
Control System which monitors various
emission control system components. If
this light illuminates while driving, it indi-
cates that a potential problem has been
detected somewhere in the emission
control system.
Generally, your vehicle will continue to be
drivable and will not need towing, but
have the system checked by an author-
ized Kia dealer as soon as possible.✽ ✽NOTICEA loose fuel filler cap may cause the On
Board Diagnostic System Malfunction
Indicator Light ( ) in the instrument
panel to illuminate unnecessarily.
Always make sure that the fuel filler cap
is tight.
✽ ✽NOTICE• Prolonged driving with the Emission
Control System Malfunction
Indicator Lamp ( ) illuminated
may cause damage to the emission
control systems which could effect dri-
vability and/or fuel economy.
•If the
Emission
Control System
Malfunction Indicator Lamp ( )
begins to flash ON and OFF, potential
catalytic converter damage is possible
which could result in loss of engine
power. Have the Engine Control
System inspected as soon as possible by
an authorized Kia dealer.
ESC indicator
(Electronic Stability
Control) (if equipped) The ESC indicator will illuminate when
the ignition switch is turned ON, but
should go off after approximately 3 sec-
onds. When the ESC is on, it monitors
the driving conditions and under normal
driving conditions, the ESC light will
remain off. When a slippery or low trac-
tion condition is encountered, the ESC
will operate, and the ESC indicator will
blink to indicate the ESC is operating.ESC OFF indicator
(if equipped)The ESC OFF indicator will illuminate
when the ignition switch is turned ON,
but should go off after approximately 3
seconds. To switch to ESC OFF mode,
press the ESC OFF button. The ESC
OFF indicator will illuminate indicating
the ESC is deactivated. If this indicator
stays on in the ESC ON mode, the ESC
may have a malfunction. Take your car to
the authorized Kia dealer and have the
system checked.
CHECK
CHECK
CHECK
CHECK
CHECKCHECK
ESCESC OFF

445
Driving your vehicle
Windshield washers In the OFF position, pull the lever gently
toward you to spray washer fluid on the
windshield and to run the wipers 2-3
cycles.
Use this function when the windshield is
dirty.
The spray and wiper operation will con-
tinue until you release the lever.If the washer does not work, check the
washer fluid level. If the fluid level is not
sufficient, you will need to add appropri-
ate non-abrasive windshield washer fluid
to the washer reservoir.
The reservoir filler neck is located in the
front of the engine compartment on the
passenger side.
✽ ✽
NOTICETo prevent possible damage to the wash-
er pump, do not operate the washer
when the fluid reservoir is empty.
CAUTION
When the ignition switch is ON and
the windshield wiper switch isplaced in the AUTO mode, use cau-tion in the following situations toavoid any injury to the hands orother parts of the body:
 Do not touch the upper end of the
windshield glass facing the rainsensor.
 Do not wipe the upper end of the
windshield glass with a damp orwet cloth.
 Do not put pressure on the wind-
shield glass.
WARNING
Do not use the washer in freezing
temperatures without first warming
the windshield with the defrosters;
the washer solution could freeze on
contact with the windshield and
obscure your vision.
OMG045032

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.