2013 KIA Optima Hybrid engine overheat

Safety features of your vehicle
10
3
During mild weather or under conditions
where the operation of the seat warmer
is not needed, keep the switches in the
OFF position.
With the seat warmer switch in the ON
position, the heating system in the seat
turns off or on automatically depending
on the seat temperature.
Each time you push the button, the
temperature setting of the seat is
changed as follows :
The seat warmer defaults to the OFF position whenever the engine
start/stop button is turned on.
Climate control seat (if equipped)
The climate control seat is provided to
cool or warm the seat during hot or cold
weather by blowing air through small vent
holes on the surface of the seat and seat-
back. While the engine is running, push
the rear portion of the switch to cool the
seat, and push the front portion of the
switch to warm the seat.
When the operation of the climate control
seat is not needed, keep the switch in the
OFF position.
The climate control seat defaults to the
OFF position whenever the ignition
switch is turned on.
CAUTION - Seat damage
When cleaning the seats, do not use an organic solvent such aspaint thinner, benzene, alcoholand gasoline. Doing so may dam-age the surface of the heater or seats.
To prevent overheating the seat warmer, do not place anything onthe seats that insulates againstheat, such as blankets, cushionsor seat covers while the seatwarmer is in operation.
Do not place heavy or sharp objects on seats equipped withseat warmers. Damage to the seatwarming components couldoccur.
OTF030014OFF → HIGH ( ) → LOW ( )
→

Features of your vehicle
50
4
Engine coolant temperature gauge
This gauge shows the temperature of the
engine coolant when the engine
start/stop button is ON.
Do not continue driving with an overheat-
ed engine. If your vehicle overheats, refer
to “If the engine overheats” in section 6.
State of charge (SOC)
The state of charge (SOC) gauge indi-
cates the hybrid battery's charge level. If
the SOC is near L level, the vehicle auto-
matically operates the engine to charge
the battery. However, if the service indi-
cator and MIL(Malfunction indicator
lamp) turn on when the State of
Charge(SOC) is near L(Low), the vehicle
should be towed. Refer to the chapter 6.
OTFH040057N
CAUTION
If the gauge pointer moves beyond
the normal range area toward the“H” position, it indicates overheat-ing that may damage the engine.
OTFH040225N
WARNING
Never remove the radiator cap
when the engine is hot. The engine
coolant is under pressure and
could cause severe burns. Wait
until the engine is cool before
adding coolant to the reservoir.
WARNING
Never try to start the vehicle if the
fuel tank is empty. The engine is
impossible to charge the high volt-
age battery of hybrid system. If you
try to start the vehicle when the fuel
is empty, the high voltage battery
will become discharged and be
damaged.

Features of your vehicle
70
4
Cruise indicator (if equipped)
CRUISE indicator
The indicator illuminates when the cruise
control system is enabled.
The cruise indicator in the instrument
cluster is illuminated when the cruise
control ON/OFF button on the steering
wheel is pushed.
The indicator goes off when the cruise
control ON/OFF button is pushed again.
For more Information, refer to “Cruise
control system” in section 5. Cruise SET indicator
The indicator illuminates when the cruise
function switch (SET- or RES+) is ON.
The cruise SET indicator in the instru-
ment cluster illuminates when the cruise
control switch (SET- or RES+) is pushed.
The cruise SET indicator does not illumi-
nate when the cruise control switch
(CANCEL) is pushed or the system is
disengaged.
Key reminder warning chime
If the driver’s door is opened while the
smart key is in the vehicle with the
engine start/stop button in ACC or the
smart key is in the smart key holder with
the engine start/stop button in OFF, the
key reminder warning chime will sound.
The chime sounds until the smart key is
removed from the smart key holder or the
driver’s door is closed.
WARNING
Significantly low tire pressure
makes the vehicle unstable and can
contribute to loss of vehicle control
and increased braking distances.
Continued driving on tires with low
pressure will cause the tires to
overheat and fail.CRUISE
SET

4105
Features of your vehicle
Operation Tips
To prevent dust or unpleasant fumesfrom entering the vehicle through the
ventilation system, temporarily set the
air intake control to the recirculated air
position. Be sure to return the control
to the fresh air position when the irrita-
tion has passed to keep fresh air in the
vehicle. This will help keep the driver
alert and comfortable.
Air for the heating/cooling system is drawn in through the grilles just ahead
of the windshield. Care should be
taken that these are not blocked by
leaves, snow, ice or other obstructions.
To prevent interior fog on the wind- shield, set the air intake control to the
fresh air position and fan speed to the
desired position, turn on the air condi-
tioning system, and adjust the temper-
ature control to desired temperature.Air conditioning (if equipped)
All Kia Air Conditioning Systems are
filled with environmentally friendly
R-134a refrigerant which does not dam-
age the ozone layer.
1. Start the engine. Push the air condi- tioning button.
2. Set the mode to the position.
3. Set the air intake control to the recir- culated air position. However, pro-
longed operation of the reticulated air
position will excessively dry the air. In
this case, change the air position.
4. Adjust the fan speed control and tem- perature control to maintain maximum
comfort.
When maximum cooling is desired, set the temperature control to the extreme
left position, set the mode control to
the MAX A/C position, then set the fan
speed control to the highest speed.✽ ✽ NOTICE
• While using the air conditioning sys-
tem, monitor the temperature gauge
closely while driving up hills or in
heavy traffic when outside tempera-
tures are high. Air conditioning sys-
tem operation may cause engine over-
heating. Continue to use the blower
fan but turn the air conditioning sys-
tem off if the temperature gauge indi-
cates engine overheating.
• While opening the windows in humid weather air conditioning may create
water droplets inside the vehicle.
Since excessive water droplets may
cause damage to electrical equipment,
air conditioning should only be used
with the windows closed.

Driving your vehicle
45
WARNING - Fire risk
When you intend to park or stop the
vehicle with the engine on, be care-
ful not to depress the accelerator
pedal for a long period of time. It
may overheat the engine or exhaust
system and cause fire.
WARNING - Driving while
intoxicated
Do not drive while intoxicated.
Drinking and driving is dangerous.
Even a small amount of alcohol will
affect your reflexes, perceptions
and judgment. Driving while under
the influence of drugs is as danger-
ous as or more dangerous than
driving drunk.
WARNING - Loose object
Securely store items in your vehi-
cle. When you make a sudden stop
or turn the steering wheel rapidly,
loose objects may drop on the floor
and it could interfere with the oper-
ation of the foot pedals, possibly
causing an accident.

Driving your vehicle
14
5
Power brakes
Your vehicle has power-assisted brakes
that adjust automatically through normal
usage.
In the event that the power-assisted
brakes lose power because of a stalled
engine or some other reason, you can
still stop your vehicle by applying greater
force to the brake pedal than you nor-
mally would. The stopping distance, how-
ever, will be longer.
When the engine is not running, the
reserve brake power is partially depleted
each time the brake pedal is applied. Do
not pump the brake pedal when the
power assist has been interrupted.
Pump the brake pedal only when neces-
sary to maintain steering control on slip-
pery surfaces.
Wet brakes may impair the vehicle’s abil-
ity to safely slow down; the vehicle may
also pull to one side when the brakes are
applied. Applying the brakes lightly will
indicate whether they have been affected
in this way.
To dry the brakes, apply them lightly
while maintaining a safe forward speed
until brake performance returns to nor-
mal.
BRAKE SYSTEM
WARNING - Steep hill
braking
Avoid continuous application of the
brakes when descending a long or
steep hill by shifting to a lower
gear. Continuous brake application
will cause the brakes to overheat
and could result in a temporary
loss of braking performance.
WARNING
If the brake pedal does not return to
its normal position when released,
there may be a malfunction in the
brake system. Take your vehicle to
an authorized Kia dealer and have
the system checked.
WARNING
Do not turn off the Hybrid system
while going down a hill. The brake
booster may not work sufficiently
and the braking distance may be
longer.
CAUTION - Brake pedal
Do not drive with your foot restingon the brake pedal. This will createabnormally high brake tempera- tures which can cause excessivebrake lining and pad wear.
CAUTION
Do not depress the brake pedal continuously without READY sta-tus. The battery may be discharged.

525
Driving your vehicle
The Vehicle Stability Management sys-tem is not a substitute for safe driving
practices but a supplementary function
only. It is the responsibility of the driver
to always check the speed and the dis-
tance to the vehicle ahead. Always
hold the steering wheel firmly while
driving.
Your vehicle is designed to activate according to the driver’s intention, even
with installed VSM. Always follow all
the normal precautions for driving at
safe speeds for the conditions – includ-
ing driving inclement weather and on a
slippery road.Good braking practices
Check to be sure the parking brake isnot engaged and that the parking
brake indicator light is out before driv-
ing away.
Driving through water may get the brakes wet. They can also get wet
when the vehicle is washed. Wet
brakes can be dangerous! Your vehicle
will not stop as quickly if the brakes are
wet. Wet brakes may cause the vehicle
to pull to one side.
To dry the brakes, apply the brakes
lightly until the braking action returns to
normal, taking care to keep the vehicle
under control at all times. If the braking
action does not return to normal, stop
as soon as it is safe to do so and call
an authorized Kia dealer for assis-
tance.
Don't coast down hills with the vehicle out of gear. This is extremely haz-
ardous. Keep the vehicle in gear at all
times, use the brakes to slow down,
then shift to a lower gear so that
engine braking will help you maintain a
safe speed. Don't "ride" the brake pedal. Resting
your foot on the brake pedal while driv-
ing can be dangerous because the
brakes might overheat and lose their
effectiveness. It also increases the
wear of the brake components.
If a tire goes flat while you are driving, apply the brakes gently and keep the
vehicle pointed straight ahead while
you slow down. When you are moving
slowly enough for it to be safe to do so,
pull off the road and stop in a safe
place.
If your vehicle is equipped with an automatic transaxle, don't let your vehi-
cle creep forward. To avoid creeping
forward, keep your foot firmly on the
brake pedal when the vehicle is
stopped.
WARNING - Tire/Wheel
size
When replacing tires and wheels,
make sure they are the same size
as the original tires and wheels
installed. Driving with varying tire
or wheel sizes may diminish any
supplemental safety benefits of the
VSM system.

531
Driving your vehicle
Your 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
miles (kilometers) you can get from a gal-
lon (liter) 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:
Drive smoothly. Accelerate at a moder-ate rate. Don't make "jack-rabbit" starts
or full-throttle shifts and maintain a
steady cruising speed. Don't race
between stoplights. Try to adjust your
speed to the traffic so you don't have to
change speeds unnecessarily. Avoid
heavy traffic whenever possible.
Always maintain a safe distance from
other vehicles so you can avoid unnec-
essary braking. This also reduces
brake wear.
Drive at a moderate speed. The faster you drive, the more fuel your vehicle
uses. Driving at a moderate speed,
especially on the highway, is one of the
most effective ways to reduce fuel con-
sumption. Don't "ride" the brake pedal. This can
increase fuel consumption and also
increase wear on these components.
In addition, driving with your foot rest-
ing on the brake pedal may cause the
brakes to overheat, which reduces
their effectiveness and may lead to
more serious consequences.
Take care of your tires. Keep them inflated to the recommended pressure.
Incorrect inflation, either too much or
too little, results in unnecessary tire
wear. Check the tire pressures at least
once a month.
Be sure that the wheels are aligned correctly. Improper alignment can
result from hitting curbs or driving too
fast over irregular surfaces. Poor align-
ment causes faster tire wear and may
also result in other problems as well as
greater fuel consumption.
Keep your vehicle in good condition. For better fuel economy and reduced
maintenance costs, maintain your vehi-
cle in accordance with the mainte-
nance schedule in section 7. If you
drive your vehicle in severe conditions,
more frequent maintenance is required
(see section 7 for details). Keep your vehicle clean. For maximum
service, your vehicle should be kept
clean and free of corrosive materials. It
is especially important that mud, dirt,
ice, etc. not be allowed to accumulate
on the underside of the vehicle. This
extra weight can result in increased
fuel consumption and also contribute
to corrosion.
Travel lightly. Don't carry unnecessary weight in your vehicle. Weight reduces
fuel economy.
Don't let the engine idle longer than necessary. If you are waiting (and not
in traffic), turn off your engine and
restart only when you're ready to go.
Remember, your vehicle does not require extended warm-up. After the
engine has started, allow the engine to
run for 10 to 20 seconds prior to plac-
ing the vehicle in gear. In very cold
weather, however, give your engine a
slightly longer warm-up period.
Don't "lug" or "over-rev" the engine. Lugging is driving too slowly in a very
high gear resulting in engine bucking. If
this happens, shift to a lower gear.
Over-revving is racing the engine
beyond its safe limit. This can be avoid-
ed by shifting at the recommended
speed.
ECONOMICAL OPERATION