2015 KIA OPTIMA HYBRID ABS

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Features of your vehicle
Anti-lock Brake System(ABS) Warning Light
This warning light illuminates:
Once you set the ignition switch or Engine Start/Stop Button to the ON
position.
- It illuminates for approximately 3seconds and then goes off.
When there is a malfunction with the ABS (The normal braking sys-
tem will still be operational without
the assistance of the anti-lock
brake system).
In this case, have your vehicle
inspected by an authorized Kia
dealer.
Electronic
Brake forceDistribution(EBD) SystemWarning Light
These two warning lights illuminate at
the same time while driving:
When the ABS and regular brake system may not work normally.
In this case, have your vehicle
inspected by an authorized Kia
dealer.
✽ ✽ NOTICE- Electronic Brake
force Distribution
(EBD) System
Warning Light
When the ABS Warning Light is on
or both ABS and Parking Brake &
Brake Fluid Warning Lights are on,
the speedometer, odometer, or trip-
meter may not work. Also, the EPS
Warning Light may illuminate and
the steering effort may increase or
decrease.
In this case, have your vehicle inspect-
ed by an authorized Kia dealer as
soon as possible.
WARNING- Electronic
Brake force Distribution
(EBD) System Warning Light
When both ABS and Parking
Brake & Brake Fluid Warning
Lights are on and stay on, the
brake system will not work nor-
mally during sudden braking.
In this case, avoid high speed
driving and abrupt braking.
Have your vehicle inspected by
an authorized Kia dealer as
soon as possible.

Features of your vehicle
84
4
Non-operational conditions of
Back-Up Warning System
The Back-Up Warning System may
not operate properly when:
1. Moisture is frozen to the sensor. (It
will operate normally when the
moisture has been cleared.)
2. The sensor is covered with foreign matter, such as snow or water, or
the sensor cover is blocked. (It will
operate normally when the materi-
al is removed or the sensor is no
longer blocked.)
3. Driving on uneven road surfaces. (unpaved roads, gravel, bumps,
gradient.)
4. Objects generating excessive noise (vehicle horns, loud motor-
cycle engines, or truck air brakes)
are within range of the sensor.
5. Heavy rain or water spray exists.
6. Wireless transmitters or mobile phones are within range of the
sensor.
7. The sensor is covered with snow.
8. Trailer towing. The detecting range may decrease
when:
1. The sensor is stained with foreign
matter such as snow or water.
(The sensing range will return to
normal when removed.)
2. Outside air temperature is extremely hot or cold.
The following objects may not be
recognized by the sensor:
1. Sharp or slim objects such as ropes, chains or small poles.
2. Objects which tend to absorb the sensor frequency such as clothes,
spongy material or snow.
3. Undetectable objects smaller than 40 in. (1 m) in height and narrower
than 6 in. (14 cm) in diameter.
Back-Up Warning System pre-
cautions
The Back-Up Warning System maynot sound sequentially depending
on the speed and shapes of the
objects detected.
The Back-Up Warning System may malfunction if the vehicle bumper
height or sensor installation has
been modified or damaged. Any
non-factory installed equipment or
accessories may also interfere with
the sensor performance.
The sensor may not recognize objects less than 11 in. (30 cm)
from the sensor, or it may sense an
incorrect distance. Use caution.
When the sensor is frozen or stained with snow, dirt, or water, the sensor
may be inoperative until the stains
are removed using a soft cloth.
Do not push, scratch or strike the sensor. Sensor damage could occur.

Driving your vehicle
30
5
Anti-lock brake system (ABS)
ABS (or ESC) will not prevent acci-
dents due to improper or dangerous
driving maneuvers. Even though
vehicle control is improved during
emergency braking, always maintain
a safe distance between you and
objects ahead. Vehicle speeds
should always be reduced during
extreme road conditions.
The vehicle should be driven at
reduced speeds in the following cir-
cumstances:
When driving on rough, gravel or
snow-covered roads
When driving with tire chains installed
When driving on roads where the road surface is pitted or has differ-
ent surface heights.
Driving in these conditions increases
the stopping distance for your vehi-
cle. The ABS continuously senses the
speed of the wheels. If the wheels
are going to lock, the ABS system
repeatedly modulates the hydraulic
brake pressure to the wheels.
When you apply your brakes under
conditions which may lock the
wheels, you may hear a “tik-tik’’
sound from the brakes, or feel a cor-
responding sensation in the brake
pedal. This is normal and it means
your ABS is active.
In order to obtain the maximum ben-
efit from your ABS in an emergency
situation, do not attempt to modulate
your brake pressure and do not try to
pump your brakes. Press your brake
pedal as hard as possible or as hard
as the situation allows the ABS to
control the force being delivered to
the brakes.
✽ ✽
NOTICE
A click sound may be heard in the
engine compartment when the vehi-
cle begins to move after the engine is
started. These conditions are normal
and indicate that the anti-lock brake
system is functioning properly.
Even with the anti-lock brake sys-
tem, your vehicle still requires suf-
ficient stopping distance. Always
maintain a safe distance from the
vehicle in front of you.
Always slow down when cornering. The anti-lock brake system cannot
prevent accidents resulting from
excessive speeds.
On loose or uneven road surfaces, operation of the anti-lock brake
system may result in a longer stop-
ping distance than for vehicles
equipped with a conventional
brake system.

531
Driving your vehicle
The ABS warning light will stay on for
approximately 3 seconds after the
ignition switch is ON. During that
time, the ABS will go through self-
diagnosis and the light will go off if
everything is normal. If the light stays
on, you may have a problem with
your ABS but your regular brakes will
work normally. Contact an authorized
Kia dealer as soon as possible. When you drive on a road with
poor traction, such as an icy road,
and operated your brakes continu-
ously, the ABS will be active con-
tinuously and the ABS warning
light may illuminate. Pull your vehi-
cle over to a safe place and stop
the engine.
Restart the engine. If the ABS warning light is off, then your ABS
is normal. Otherwise, you may
have a problem with the ABS.
Contact an authorized Kia dealer
as soon as possible.
✽ ✽ NOTICE
When you jump start your vehicle
because of a drained battery, the
engine may not run as smoothly and
the ABS warning light may turn on
at the same time. This happens
because of the low battery voltage. It
does not mean your ABS has mal-
functioned.
• Do not pump your brakes!
• Have the battery recharged before
driving the vehicle.
W-78_ABS_S

553
Driving your vehicle
Hazardous driving conditions
When hazardous driving conditions
are encountered such as water,
snow, ice, mud, sand, or similar haz-
ards, follow these suggestions:
Drive cautiously and allow extradistance for braking.
Avoid sudden braking or steering.
When braking with non-ABS brakes pump the brake pedal with
a light up-and-down motion until
the vehicle is stopped. Do not pump the brake pedal on a
vehicle equipped with ABS.
If stalled in snow, mud, or sand,
use second gear. Accelerate slow-
ly to avoid spinning the drive
wheels.
Use sand, rock salt, tire chains, or other non-slip material under the
drive wheels to provide traction
when stalled in ice, snow, or mud.
Rocking the vehicle
If it is necessary to rock the vehicle
to free it from snow, sand, or mud,
first turn the steering wheel right and
left to clear the area around your
front wheels. Then, shift back and
forth between R (Reverse) and any
forward gear in vehicles equipped
with an automatic transaxle. Do not
race the engine, and spin the wheels
as little as possible. If you are still
stuck after a few tries, have the vehi-
cle pulled out by a tow vehicle to
avoid engine overheating and possi-
ble damage to the transaxle.
The ESC system should be turned
OFF prior to rocking the vehicle.
SPECIAL DRIVING CONDITIONS
WARNING - Downshifting
Do not downshift with an auto-
matic transaxle while driving on
slippery surfaces. The sudden
change in tire speed could
cause the tires to skid and
result in an accident.
CAUTION - Vehicle rocking
Prolonged rocking may causeengine overheating, transaxledamage or failure, and tire dam-age.

What to do in an emergency
16
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4.Remove the wheel lug nut wrench,
jack, jack handle, and spare tire
from the vehicle.
5.Block both the front and rear of the wheel that is diagonally opposite
the jack position.
To prevent vehicle movement while
changing a tire, always set the park-
ing brake fully, and always block the
wheel diagonally opposite the wheel
being changed.
We recommend that the wheels of
the vehicle be chocked, and that no
person remain in a vehicle that is
being jacked. 6.Loosen the wheel lug nuts counter-
clockwise one turn each, but do
not remove any nut until the tire
has been raised off the ground.
7.Place the jack at the front (1) orrear (2) jacking position closest to
the tire you are changing. Place the
jack at the designated locations
under the frame. The jacking posi-
tions are plates welded to the
frame with two tabs and a raised
dot to index with the jack.
1JBA6504OTF064004
OTFH064020
OTFH064019

Maintenance
52
7
Tire replacement
If the tire is worn evenly, a tread wear
indicator will appear as a solid band
across the tread. This shows there is
less than 1/16 inch (1.6 mm) of tread
left on the tire. Replace the tire when
this happens.
Do not wait for the band to appear
across the entire tread before replac-
ing the tire. The ABS works by comparing the
speed of the wheels. Tire size can
affect wheel speed. When replacing
tires, all 4 tires must use the same
size originally supplied with the vehi-
cle. Using tires of a different size can
cause the ABS (Anti-lock Brake
System) and ESC (Electronic
Stability Control) to work irregularly.
✽ ✽
NOTICE
We recommend that when replacing
tires, use the same originally sup-
plied with the vehicles.
If not, that affects driving perform-
ance.
Compact spare tire replacement
A compact spare tire has a shorter
tread life than a regular size tire.
Replace it when you can see the
tread wear indicator bars on the tire.
The replacement compact spare tire
should be the same size and design
tire as the one provided with your
new vehicle and should be mounted
on the same compact spare tire
wheel. The compact spare tire is not
designed to be mounted on a regular
size wheel, and the compact spare
tire wheel is not designed for mount-
ing a regular size tire.
OEN076053
Tread wear indicator

773
Maintenance
Description Fuse RatingProtected Component
OPCU 1 20A OPCU UNIT B+
OPCU 2 20A OPCU UNIT IG1
TCU 1 20A TCU
STOP LAMP 15A RLY.10 (HAC Relay), STOP LAMP RELAY DEICER 20A RLY.7 (Deicer Relay)
IG1 40A IGN SW
B+ 1 50A B+
B+ 2 60A B+
BLOWER 40A RLY.14 (Blower Relay) IG 2 40A IGN SW, IG2 RLY
AHB 1 40A ESC UNIT MOTOR B+, DIAGNOSIS ABS A/B VALVE B+
AHB 2 40A ESC UNIT SOLENOID B+
RR HTD 40A RLY.1 (RR HTD Relay)
B+ 3 60A B+
MDPS 80A EPS Control Module
HEV HCU 20A TCU UNIT B+
BATTERY C/FAN 20A BMS