KIA Optima (2018 year). Instruction — part 29

Maintenance

3. Pull the suspected fuse straight

out. Use the removal tool provided
on the engine compartment fuse
panel cover.

4. Check the removed fuse; replace it

if it is blown.

Spare fuses are provided in the
engine compartment fuse panel.

5. Push in a new fuse of the same

rating, and make sure it fits tightly
in the clips.

If it fits loosely, consult an authorized
Kia dealer.

If you do not have a spare, use a
fuse of the same rating from a circuit
you may not need for operating the
vehicle, such as the power outlet
fuse.
If the head lamp, turn signal lamp,
stop signal lamp, fog lamp, DRL, tail
lamp, HMSL do not work and the
fuses are OK, check the fuse panel
in the engine compartment. If a fuse
is blown, it must be replaced.

✽

NOTICE

If the headlamp, fog lamp, turn sig-
nal lamp, or tail lamp malfunction
even without any problem to the
lamps, have the vehicle checked by
an authorized Kia dealer for assis-
tance.

OJF075023

CAUTION -

Fuse Panel
Covers

• Set all switches to ON before

driving.

• If the vehicle is going to be

unused for over 1 month, set
all switches to OFF to prevent
the batteries from draining.

• The contact points of the

switches may wear out with
excessive use. Please refrain
from excessive use of the
switches (except for long-term
parking for over 1 month).

8 63

Maintenance

Fuse switch

Always set the fuse switch to the ON
position before using the vehicle.
If you move the switch to the OFF
position, some items such as audio
and digital clock must be reset and
transmitter (or smart key) may not
work properly. When the switch is
Off, the caution indicator will be dis-
played on the instrument cluster.
Always place the fuse switch in the
ON position while driving the vehicle.
If the switch is located in the “OFF”
position, a caution indicator will be
displayed in the cluster.

Engine compartment fuse
replacement

1. Turn the ignition switch and all

other switches off.

2. Remove the fuse panel cover by

pressing the tab and pulling the
cover up. When the blade type
fuse is disconnected, remove it by
using the clip designed for chang-
ing fuses located in the engine
compartment fuse box. Upon
removal, securely insert reserve
fuse of the same rating.

3. Check the removed fuse; replace it

if it is blown. To remove or insert
the fuse, use the fuse puller in the
engine compartment fuse panel.

4. Push in a new fuse of the same

rating, and make sure it fits tightly
in the clips. If it fits loosely, consult
an authorized Kia dealer.

OJF075024

CAUTION

After checking the fuse panel in
the engine compartment,
securely install the fuse panel
cover through the audible click-
ing sound.
If not, electrical failures may
occur from water contact.

OJF075025

Maintenance

Multi fuse

If the multi fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery

cable.

3. Remove the nuts shown in the pic-

ture above.

4. Replace the fuse with a new one

of the same rating.

5. Reverse these steps to reinstall

the multi fuse.

✽

NOTICE

Do not disassemble nor assemble the
multi fuse when it is secured with
nuts and bolts. Incorrect or partial
assembly torque may cause a fire.
Have the vehicle checked by an
authorized Kia dealer.

Main fuse

If the main fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery

cable.

3. Remove the nuts shown in the pic-

ture above.

4. Replace the fuse with a new one

of the same rating.

5. Reverse these steps to reinstall

the main fuse.

OJF075072

OJF075026

8 65

Maintenance

✽

NOTICE

The electronic system may not func-
tion correctly even when the engine
compartment and internal fuse
box’s individual fuses are not dis-
connected. In such case the cause of
the problem may be disconnection
of the main fuse (BFT type), which is
located inside the positive battery
terminal (+) cap.
Since the main fuse is designed more
intricately than other parts, have the
vehicle checked by an authorized
Kia dealer.

CAUTION

Visually inspect the battery cap
to ensure it is securely closed.
If the battery cap is not securely
closed, moisture may enter the
system and damage the electri-
cal components.

Maintenance

Fuse/relay panel description

Driver’s side fuse panel

Inside the fuse/relay panel covers,
you can find the fuse/relay label
describing fuse/relay name and
capacity.

✽

NOTICE

Not all fuse panel descriptions in
this manual may be applicable to
your vehicle. It is accurate at the
time of printing. When you inspect
the fuse panel in your vehicle, refer
to the fuse panel label.

OJFA078159N

OJF075027

8 67

Maintenance

Fuse Name

Fuse rating

Circuit Protected

MODULE 7

10A

Around View Unit, Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module, Rear Seat
Warmer Control Module

MODULE 5

10A

A/C Control Module, Electro Chromic Mirror, Crash Pad Switch, Head Lamp LH/RH, Auto Head Lamp
Leveling Device Module, A/V & Navigation Head Unit, Fuel Lid & Trunk Open Switch, Shift Lever Indicator,
Driver IMS Module, Driver IMS Module, Front Air Ventilation Seat Control Module, Front Seat Warmer
Control Module, Rear Seat Warmer Control Module

MODULE 6

10A

BCM, Smart Key Control Module

A/CON

10A

A/C Control Module, E/R Junction Block (Blower Relay)

START

10A

[W/O Smart Key & IMMO.] ICM Relay Box (Burglar Alarm Relay)
[With Smart Key / IMMO.] Transaxle Range Switch, PCM (G4KH/G4KJ)

A/BAG

15A

SRS Control Module, Passenger Occupant Detection

MODULE 3

10A

BCM, ATM Shift Lever, Stop Lamp Switch, DBL Unit, Keyboard, A/C Control Module

MODULE 4

10A

Console Switch, Blind Spot Detection Radar LH/RH, Smart Cruise Control Unit, AEB Module, Lane Keeping
Assist Module

INTERIOR LAMP

10A

Trunk Room Lamp, Ignition Key Ill. & Door Warning Switch, Glove Box Lamp, Driver/Passenger Smart Key
Outside Handle, Front Vanity Lamp Switch LH/RH, Overhead Console Lamp, Center Room Lamp, Center
Personal Lamp, Rear Personal Lamp LH/RH, Driver/Passenger Scuff Lamp

MDPS

10A

MDPS Unit (Column/Rack), Steering Angle Sensor

IG1

25A

PCB Block (Fuse - TCU 2, ABS 3, ECU 3, VACUUM PUMP 2)

MODULE 9

10A

Immobilizer Module, Smart Key Control Module

Instrument panel (Driver’s side fuse panel)

Maintenance

Fuse Name

Fuse rating

Circuit Protected

WASHER

15A

Multifunction Switch (Wiper Low & Washer Switch)

MODULE 8

10A

A/C Control Module, Driver/Passenger Door Module

CLUSTER

10A

Instrument Cluster (IG1)

MULTI MEDIA

15A

Audio, A/V & Navigation Head Unit, Keyboard

HEATED

STEERING

15A

BCM (Steering Wheel Heated)

MODULE 1

10A

Console Switch, Key Solenoid, Driver/Passenger Door Module, BCM

DR LOCK

20A

Door Lock Relay, Door Unlock Relay

SMART KEY

15A

Smart Key Control Module

A/BAG IND

10A

Instrument Cluster (Air Bag IND. Power)

TRUNK

10A

Trunk Lid Relay, Fuel Filler & Trunk Open Switch, Trunk Lid Motor, ICM Relay Box (Fuel Filler Open Relay)

SUNROOF 2

20A

Sunroof Control Unit (Roller)

MEMORY 1

10A

Instrument Cluster, A/C Control Module, Data Link Connector, Wireless Charger, Driver IMS Module, Rain
Sensor, ICM Relay Box (Outside Mirror Folding/Unfolding Mirror Relay), Security Indicator, Auto Light &
Photo Sensor, Driver/Passenger Door Module, Electro Chromic Mirror

S/HEATER RR

25A

Rear Seat Warmer Control Module

SUNROOF 1

20A

Sunroof Control Unit (Glass)

8 69

Maintenance

Fuse Name

Fuse rating

Circuit Protected

S/HEATER FRT

25A

Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module

MODULE 2

10A

Audio, A/V & Navigation Head Unit, Keyboard, Around View Unit, AMP, Power Outside Mirror Switch, Smart
Key Control Module, BCM, Wireless Charger, Rear USB Charger #1/#2, E/R Junction Block (Power Outlet
Relay)

P/WINDOW RH

25A

Power Window RH Relay, Rear Power Window Switch RH, Power Window Main Switch, Passenger Safety
Power Window Module

P/SEAT PASS

25A

Passenger Seat Manual Switch, Walk In Relay Module, Passenger Reclining Limit Switch

AMP

25A

AMP (JBL)

BRAKE SWITCH

10A

Stop Lamp Switch, Immobilizer Module, Smart Key Control Module, Start/Stop Button Switch

P/WINDOW LH

25A

Power Window LH Relay, Rear Power Window Switch LH, Power Window Main Switch, Driver Safety Power
Window Module

P/SEAT DRV

30A

Driver Seat Manual Switch, Driver IMS Module

POWER OUTLET

20A

Front Power Outlet #1, Front Cigarette Lighter & Power Outlet #2

Maintenance

Engine compartment fuse panel

OJFA075059

OJF075029

8 71

Maintenance

Fuse Name

Fuse rating

Circuit Protected

MULTI

FUSE

MDPS 1

80A

MDPS Unit (Column)

COOLING

FAN 2

60A

[G4KH/G4FJ] Cooling Fan1 Relay, Cooling Fan2 Relay

COOLING

FAN 1

50A

[G4KJ] Cooling Fan1 Relay

B+ 3

50A

Smart Junction Block (IPS 2 (IPS 5), IPS 3 (IPS 6), IPS 7, IPS 8)

REAR

HEATED

50A

Rear Heated Relay

DCT1

40A

[G4FJ-DCT] TCM

BLOWER

40A

Blower Relay

POWER

OUTLET 1

40A

Power Outlet Relay

IG2

30A

[W/O Smart Key] Start Relay, Ignition Switch, [With Smart Key] Start Relay, PCB Block (IG2 Relay)

MDPS 2

100A

MDPS Unit (Rack)

B+1

60A

Smart Junction Block (Fuse - SUNROOF1, SUNROOF2, S/HEATER RR, P/SEAT DRV, P/SEAT PASS,
P/WINDOW LH, P/WINDOW RH, TRUNK)

B+5

60A

PCB Block (Engine Control Relay, Fuse - TCU1, ECU2, FUEL PUMP, HORN, WIPER1)

B+2

60A

Smart Junction Block (IPS 1, IPS 4, Fuse - AMP, S/HEATER FRT)

ABS 1

40A

ESC Module

IG1

40A

[W/O Smart Key] Ignition Switch, [With Smart Key] PCB Block (IG1/ACC Relay)

DCT 2

40A

[G4FJ-DCT] TCM

ABS 2

30A

ESC Module, Multipurpose Check Connector

Engine room compartment fuse panel

Maintenance

Fuse Name

Fuse rating

Circuit Protected

FUSE

B+4

40A

Smart Junction Block (Leak Current Autocut Device Fuse - INTERIOR LAMP, MEMORY1, MULTI
MEDIA, Fuse - DOOR LOCK, MODULE1, SMART KEY, BRAKE SWITCH)

E-CVVT 1

40A

E-CVVT Relay

VACUUM

PUMP 1

20A

Vacuum Pump

DEICER

20A

Deicer Relay

AMS

10A

Battery Sensor

E-CVVT 2

20A

PCM

A/CON

10A

A/C Control Module

E-CVVT 3

20A

PCM

HEATED

MIRROR

10A

A/C Control Module, Driver/Passenger Power Outside Mirror, ECM

WIPER 2

10A

BCM, PCM/ECM

H/LAMP HI

20A

Head Lamp HI Relay

8 73

Maintenance

Fuse Name

Fuse rating

Circuit Protected

FUSE

FUEL PUMP

20A

Fuel Pump Relay

ECU 1

20A

PCM/ECM

SENSORS 2

10A

E/R Junction Block (Fuel Pump Relay, Cooling Fan 1/2 Relay)
[G4KJ] Oil Control Valve (Exhaust), Purge Control Solenoid Valve, Variable Intake Solenoid Valve, Canister

Close Valve

[G4KH] Oil Control Valve (Exhaust), Purge Control Solenoid Valve, RCV Control Solenoid Valve, Canister

Close Valve

[G4FJ] Oil Control Valve #1/#2, Purge Control Solenoid Valve, RCV Control Solenoid Valve, Canister Close

Valve

TCU 2

15A

Transaxle Range Switch, TCM

ABS 3

10A

ESC Module, Multipurpose Check Connector

POWER

OUTLET 3

20A

Rear Power Outlet

B/UP LAMP

10A

PCM/TCM, Transaxle Range Switch, Audio, Electro Chromic Mirror, Rear Combination Lamp (IN) LH/RH

SENSOR 1

15A

Oxygen Sensor (Up/Down)

IGN COIL

20A

Ignition Coil #1/#2/#3/#4

ECU 2

10A

PCM/ECM

TCU 1

10A

PCM/TCM

VACUUM

PUMP 2

10A

Vacuum Pump, Vacuum Switch

ECU 3

10A

PCM/ECM

POWER

OUTLET 2

20A

Front Power Outlet #1

HORN

20A

Horn Relay, ICM Relay Box (Burglar Alarm Horn Relay)

WIPER 1

30A

Wiper Power Relay

Maintenance

Engine compartment fuse panel
(Battery terminal cover)

✽

NOTICE

OJF075035

OJF075036

8 75

Maintenance

LIGHT BULBS

Bulb replacement precaution

Please keep extra bulbs on hand
with appropriate wattage ratings in
case of emergencies.
Refer to “Bulb Wattage” in chapter 9.
When changing lamps, first turn off
the engine at a safe place, firmly
apply the parking brake and detach
the battery’s negative (-) terminal.

Use only bulbs of the specified
wattage.

WARNING

- Working on

the lights

Prior to working on the light,
firmly apply the parking brake,
ensure that the ignition switch
is turned to the LOCK position
and turn off the lights to avoid
sudden movement of the vehi-
cle and burning your fingers or
receiving an electric shock.

CAUTION -

Light replace-
ment

Be sure to replace the burned-
out bulb with one of the same
wattage rating. Otherwise, it
may cause damage to the fuse
or electric wiring system.

CAUTION -

Headlamp
Lens

To prevent damage, do not
clean the headlamp lens with
chemical solvents or strong
detergents.

Maintenance

✽

NOTICE

• If the light bulb or lamp connector

is removed while the lamp is still
on, the fuse box's electronic sys-
tem may log it as a malfunction.
Therefore, a lamp malfunction
incident may be recorded as a
Diagnostic Trouble Code (DTC) in
the fuse box.

• It is normal for an operating lamp

to flicker momentarily. This is due
to a stabilization function of the
vehicle’s electronic control device.
If the lamp lights up normally
after momentarily blinking, then
it is functioning as normal.
However, if the lamp continues to
flicker several times or turns off
completely, there may be an error
in the vehicle’s electronic control
device. Please have the vehicle
checked by an authorized Kia
dealer immediately.

If you don’t have the necessary tools,
the correct bulbs and the expertise,
consult an authorized Kia dealer. In
many cases, it is difficult to replace
vehicle light bulbs because other
parts of the vehicle must be removed
before you can get to the bulb. This is
especially true if you have to remove
the headlamp assembly to get to the
bulb(s).
Removing/installing the headlamp
assembly can result in damage to
the vehicle.
If non-genuine parts or substandard
bulbs are used, it may lead to blow-
ing a fuse or other wiring damages.
Do not install extra lamps or LEDs to
the vehicle. If additional lights are
installed, it may lead to lamp mal-
functions and flickering. Additionally,
the fuse box and other writing may
be damaged.

Light bulb position (Front)

OJFA076134

OJFA076136

■

Head lamp - Type A

■

Head lamp - Type B

8 77

Maintenance

(1) Front turn signal lamp
(2) Headlamp (Low)
(3) Headlamp (High)
(4) Day time running lamp/

Position lamp (LED type)

(5) Side marker
(6) Front fog lamp (LED type)

Light bulb position (Rear)

OJFA075092

OJFA075040

■

Rear combination lamp - Type A

■

Rear combination lamp - Type B

OJFA076190

OJFA078136N

OJFA078157N

■

Head lamp - Type C

■

Head lamp - Type D

■

Fog lamp

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KIA Optima (2018 year). Instruction — part 29

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