2020 KIA OPTIMA relay

Features of your vehicle
44
4
Electric Power Steering (EPS)
The power steering uses a motor to
assist you in steering the vehicle. If
the engine is off or if the power steer-
ing system becomes inoperative, the
vehicle may still be steered, but it will
require increased steering effort.
The electric power steering is con-
trolled by a power steering control
unit which senses the steering wheel
torque and vehicle speed to com-
mand the motor.
The steering becomes heavier as the
vehicle's speed increases and
becomes lighter as the vehicle's
speed decreases for improved steer-
ing control.
Should you notice any change in the
effort required to steer during normal
vehicle operation, have the power
steering checked by an authorized
Kia dealer. If the Electric Power Steering
System does not operate normally,
the warning light will illuminate on
the instrument cluster. The steering
wheel may require increased
steering effort. Take your vehicle to
an authorized Kia dealer and have
the vehicle checked as soon as
possible.
When you operate the steering wheel in low temperature, noise
may occur. If temperature rises, the
noise will likely disappear. This is a
normal condition.
When the vehicle is stationary, and the steering wheel is turned all the
way to the left or right continuous-
ly, the steering wheel becomes
harder to turn. The power assist is
limited to protect the motor from
overheating.
As time passes, the steering wheel
will return to its normal condition.
✽ ✽ NOTICE
The following symptoms may occur
during normal vehicle operation:
• The EPS warning light does not
illuminate.
• The steering gets heavy immedi- ately after turning the Engine
Start/Stop button is ON position.
This happens as the system per-
forms the EPS system diagnostics.
When the diagnostics are complet-
ed, the steering system will return
to its normal condition.
• A click noise may be heard from the EPS relay after turning the
Engine Start/Stop button is ON or
OFF position.
• A motor noise may be heard when the vehicle is at a stop or at a low
driving speed. (Continued)
STEERING WHEEL

7
• All season tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51
• Summer tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51
• Snow tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-\
51
• Radial-ply tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
7-53
• Inner panel fuse replacement . . . . . . . . . . . . . . . . . . . 7-55
• Engine compartment fuse replacement. . . . . . . . . . . 7-57
• Fuse/relay panel description. . . . . . . . . . . . . . . . . . . . 7-59
Light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-73
• Bulb replacement precaution . . . . . . . . . . . . . . . . . . 7-73
• Light bulb position (Front) . . . . . . . . . . . . . . . . . . . . 7-75
• Light bulb position (Rear) . . . . . . . . . . . . . . . . . . . . . 7-76
• Light bulb position (Side) . . . . . . . . . . . . . . . . . . . . . . 7-76
• Headlamp (Low beam) bulb replacement(Headlamp Type A) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-77
• Headlamp (High beam) bulb replacement (Headlamp Type A) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-78
• Headlamp (Low/High beam) (LED type) bulb replacement (Headlamp Type B) . . . . . . . . . . . . . . . 7-79
• Front turn signal lamp (Bulb type) bulb replacement (Headlamp Type B) . . . . . . . . . . . . . . . 7-80
• Front turn signal lamp (Bulb type) bulb replacement (Headlamp Type A) . . . . . . . . . . . . . . . 7-80
• Front fog lamp (Bulb and LED type) bulb replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-81
• Position lamp + DRL (LED type) bulb replacement . . 7-81• Side repeater lamp (LED type) bulb replacement . . 7-82
• Rear turn signal lamp bulb replacement . . . . . . . . . 7-82
• Tail lamp (LED type) bulb replacement (Sedan) . . . 7-84
• Stop lamp (LED type) bulb replacement (Sedan) . . 7-84
• Back-up lamp (Bulb type) bulb replacement . . . . . . 7-84
• License plate lamp (Bulb type) bulb replacement . . 7-85
• High mounted stop lamp (LED type) bulb
replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-86
• Map lamp (LED type) bulb replacement . . . . . . . . . 7-86
• Vanity mirror lamp (Bulb type) bulb replacement . . 7-87
• Room lamp (Bulb type) bulb replacement . . . . . . . . 7-87
• Personal lamp (LED type) bulb replacement . . . . . . 7-88
• Glove box lamp (Bulb type) bulb replacement . . . . 7-88
• Trunk lamp (LED type) bulb replacement . . . . . . . . 7-89
Appearance care . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-90
• Exterior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-90
• Interior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-96
Emission control system . . . . . . . . . . . . . . . . . . . . 7-99
• Crankcase emission control system . . . . . . . . . . . . . . 7-99
• Evaporative emission control (including ORVR : Onboard Refueling Vapor Recovery) system . . . . . 7-99
• Exhaust emission control system . . . . . . . . . . . . . . . 7-100

Maintenance
54
7
✽ ✽
NOTICE
• When replacing a fuse, turn the
ignition “OFF” and turn off
switches of all electrical devices
then remove battery (-) terminal.
• The actual fuse/relay panel label may differ from equipped items.
WARNING- Electrical Fire
Always ensure replacements
fuses and relays are securely
fastened when installed. Failure
to do so can result in a vehicle
fire.
CAUTION
When replacing a blown fuse or relay, make sure the newfuse or relay fits tightly intothe clips. Failure to tightlyinstall the fuse or relay maycause damage to the wiringand electric systems.
Do not remove fuses, relays and terminals fastened withbolts or nuts. The fuses, relaysand terminals may not be fas-tened correctly which maycause vehicle damage.
CAUTION
Do not input any other objects except fuses or relays intofuse/relay terminals, such as adriver or wiring. It may causecontact failure and systemmalfunction.
Do not plug in screwdrivers or aftermarket wiring into the ter-minal originally designed forfuse and relays only. The elec-trical system and wiring of thevehicle interior may be dam-aged or burned due to contactfailure.
If you directly connect the wire on the taillight or replacethe bulb which is over the reg-ulated capacity to install trail-ers, etc., the inner junctionblock can get burned.

759
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 on the inside
of the fuse cover.
OJFH076169N
OJF075027

Maintenance
60
7
Instrument panel (Driver’s side fuse panel)
Fuse NameFuse ratingCircuit Protected
MODULE 710ASurround View Monitor Unit, Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module,
Rear Seat Warmer Control Module
MODULE 510AA/C Control Module, Electro Chromic Mirror, Driver IMS Module, Head Lamp LH/RH, Auto Head Lamp
Leveling Device Module, Fuel Lid & Trunk Open Switch, Shift Lever Indicator, Front Air Ventilation Seat
Control Module, Front Seat Warmer Control Module, Rear Seat Warmer Control Module
MODULE 610ABCM, Smart Key Control Module
A/CON10AA/C Control Module, E/R Junction Block (RLY. 4 - Blower Relay), Ionizer, Active Incar Sensor, Electronic A/C
Compressor
START10ATransmission Range Switch, Smart Key Control Module
A/BAG15ASRS Control Module, Passenger Occupant Detection Sensor
MODULE 310ABCM, Stop Lamp Switch, AFLS Unit, Keyboard, VESS Unit, A/V & Navigation Head Unit, Sport Mode
Switch
MODULE 410AConsole Switch, Blind-spot Collision Warning Radar LH/RH, Parking Assist Control Module, Smart Cruise
Control Unit, Lane Keeping Assist Module, Active Air Flap Unit, Electric Parking Brake Module, BMS Control
Module
INTERIOR LAMP10ATrunk Room Lamp, Driver/Passenger Door Lamp, Glove Box Lamp, Driver/Passenger Smart Key Outside
Handle, Front Vanity Lamp Switch LH/RH, Overhead Console Lamp, Rear Personal Lamp LH/RH,
Driver/Passenger Foot Lamp, Room Lamp, Center Personal Lamp

761
Maintenance
Fuse NameFuse ratingCircuit Protected
MDPS10AMDPS Unit (Column/Rack)
IG125APCB Block (Fuse - OPCU2/ELECTRICAL WATER PUMP/TCU2/ACTIVE HYDRAULIC BOOTER 3/HEV
ECU2/ECU3)
MODULE 910ASmart Key Control Module
WASHER15AMultifunction Switch (Wiper Low & Washer Switch)
MODULE 810ADriver/Passenger Door Module
CLUSTER10AInstrument Cluster
MULTI MEDIA15AAudio, A/V & Navigation Head Unit, Keyboard
HTD STRG15ABCM (Steering Wheel Heated)
MODULE 110AConsole Switch, Active Air Flap Unit, Gateway, Driver/Passenger Door Module
DR LOCK20ADoor Lock Relay, Door Unlock Relay, ICM Relay Box (Dead Lock Relay)
MEMORY 210ASiren Control Module, Ultrasonic Instrusion Protection Sensor
SMART KEY15ASmart Key Control Module

Maintenance
62
7
Fuse NameFuse ratingCircuit Protected
A/BAG IND10AInstrument Cluster (Air Bag IND. Power)
TRUNK10ATrunk Lid Relay, Fuel Filler & Trunk Open Switch, ICM Relay Box (Fuel Filler Open Relay)
SUNROOF 220ASunroof Control Unit (Roller)
BATTERY
MANAGEMENT10ABMS Control Module
MEMORY 110AInstrument Cluster, A/C Control Module, Data Link Connector, BCM, 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
FOG LAMP REAR10AICM Relay Box (Rear Fog Lamp Relay)
GATEWAY10AGateway
S/HEATERREAR25ARear Seat Warmer Control Module
SUNROOF 120ASunroof Control Unit (Glass)
S/HEATERFRONT25AFront Air Ventilation Seat Control Module, Front Seat Warmer Control Module
ECS15ANot Used
MODULE 210AAudio, A/V & Navigation Head Unit, Keyboard, Wireless Charger, Surround View Monitor Unit, AMP, Power
Outside Mirror Switch, Smart Key Control Module, BCM, Rear USB Charger, VESS Unit, E/R Junction Block
(RLY. 7 - Power Outlet Relay)

763
Maintenance
Fuse NameFuse ratingCircuit Protected
P/WDW RH25A
Power Window RH Relay, Rear Safety Power Window Module LH, Rear Power Window Switch LH, Power
Window Main Switch,
[LHD] Passenger Safety Power Window Module
[RHD] Driver Safety Power Window Module
P/SEAT PASS30APassenger Seat Manual Switch, Walk In Relay Module, Passenger Reclining Limit Switch
AMP25AAMP
BRAKE SWITCH10AStop Lamp Switch, Smart Key Control Module, Start/Stop Button Switch
P/WDW LH25A
Power Window LH Relay, Rear Safety Power Window Module RH, Rear Power Window Switch RH, Power
Window Main Switch,
[LHD] Driver Safety Power Window Module
[RHD] Passenger Safety Power Window Module
P/SEAT DRV30ADriver Seat Manual Switch, Driver IMS Module
POWER
OUTLET20AFront Power Outlet #1, Front Cigarette Lighter & Power Outlet #2
RR WIPER15A-
SPARE 110A-
SPARE 210A-