2012 KIA Optima Hybrid relay

Your vehicle at a glance
42
ENGINE COMPARTMENT
1. Sub relay box ....................................7-55
2. Engine coolant reservoir ...................7-24
3. Windshield washer fluid reservoir .....7-29
4. Radiator cap .....................................7-26
5. Engine oil dipstick .............................7-22
6. Engine oil filler cap ...........................7-22
7. Brake fluid reservoir ..........................7-28
8. Air cleaner.........................................7-30
9. Fuse box ...........................................7-52
10. Inverter coolant reservoir ................7-24
* : if equipped
* The actual engine room in the vehicle may differ from the illustration.
OYFH071001

Features of your vehicle
34
4
Electric power steering
Power steering uses the motor to assist
you in steering the vehicle. 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.
The motor driven power steering is con-
trolled by the power steering control unit
which senses the steering wheel torque
and vehicle speed to command the
motor.
The steering wheel becomes heavier as
the vehicle’s speed increases and
becomes lighter as the vehicle’s speed
decreases for better control of the steer-
ing wheel.
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
The following symptoms may occur dur-
ing normal vehicle operation:
• The steering effort is high immediate-
ly after turning the ignition switch on.
This happens as the system performs
the EPS system diagnostics. When the
diagnostics is completed, the steering
wheel will return to its normal condi-
tion.
• A click noise may be heard from the EPS relay after the ignition switch is
turned to the ON or LOCK position.
• Motor noise may be heard when the vehicle is at a stop or at a low driving
speed.
• The steering effort increases if the steering wheel is rotated continuously
when the vehicle is not in motion.
However, after a few minutes, it will
return to its normal conditions.
• When you operate the steering wheel in low temperature, abnormal noise
could occur. If temperature rises, the
noise will disappear. This is a normal
condition.
If the Electric Power Steering System
does not operate normally, the warning
light will illuminate on the instrument
cluster. The steering wheel may become
difficult to control or operate abnormally.
Take your vehicle to an authorized Kia
dealer and have the vehicle checked as
soon as possible.
STEERING WHEEL

Maintenance
27
ENGINE COMPARTMENT
OYFH071001
❈The actual engine room in the vehicle may differ from the illustration. 1. Sub relay box
2. Engine coolant reservoir
3. Windshield washer fluid reservoir
4. Radiator cap
5. Engine oil dipstick
6. Engine oil filler cap
7. Brake fluid reservoir
8. Air cleaner
9. Fuse box
10. Inverter coolant

751
Maintenance
FUSES
A vehicle’s electrical system is protected
from electrical overload damage by
fuses.
This vehicle has 2 fuse panels, one locat-
ed in the driver’s side panel bolster, the
other in the engine compartment near
the battery.
If any of your vehicle’s lights, acces-
sories, or controls do not work, check the
appropriate circuit fuse. If a fuse has
blown, the element inside the fuse will
melt.
If the electrical system does not work,
first check the driver’s side fuse panel.
Always replace a blown fuse with one of
the same rating.
If the replacement fuse blows, this indi-
cates an electrical problem. Avoid using
the system involved and immediately
consult an authorized Kia dealer.
Three kinds of fuses are used: blade typefor lower amperage rating, cartridge type,and multi fuse for higher amperage rat-ings.
✽ ✽ NOTICE
The actual fuse/relay panel label may
differ from equipped items.
WARNING - Fuse replace-
ment
Never replace a fuse with any-
thing but another fuse of the
same rating.
A higher capacity fuse could cause damage and possibly a
fire.
Never install a wire or aluminum foil instead of the proper fuse -
even as a temporary repair. It may
cause extensive wiring damage
and a possible fire.
CAUTION - Fuse
replacement
Do not use a screwdriver or anyother metal object to remove fuses because it may cause a short circuitand damage the system.
OLM079051N
Normal
Normal
Blade type
Cartridge type
Multi fuse
Main fuse Blown
Blown
Normal Blown
Normal Blown

Maintenance
54
7
Multi fuse
If the multi fuse is blown, it must be
removed as follows:
1. Remove the fuse panel in the engine
compartment.
2. Remove the nuts shown in the picture above.
3. Replace the fuse with a new one of the same rating.
4. Reinstall in the reverse order of removal.
Oil pump cooling fuse/Cooling fan fuse
If the oil pump cooling fuse or cooling fan
fuse is blown, it must be removed as fol-
lows:
1. Turn off the engine.
2. Disconnect the negative battery cable.
3. Remove the fuse panel on the right side in the engine compartment.
4. Replace the fuse with a new one of the same rating.
5. Reinstall in the reverse order of removal.
Sub-relay fuse
If the sub-relay fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery cable.
3. Replace the fuse with a new one of thesame rating.
4. Reinstall in the reverse order of removal.
✽ ✽ NOTICE
If the multi or starting fuse is blown,
consult an authorized Kia dealer.
OVG079022OTFH070072NOYFH071021N

755
Maintenance
✽
✽NOTICE
Not all fuse panel descriptions in this
manual may be applicable to your vehi-
cle. It is accurate at the time of printing.
When you inspect the fuse panel in your
vehicle, refer to the fuse panel label.
Fuse/relay panel description
Inside the fuse/relay panel covers, you can find the fuse/relay label describing fuse/relay name and capacity.
Inner fuse panel
Engine compartment fuse panel
OTF070023/OYF071071N/OTFH070071N
Sub-relay box

Maintenance
56
7
Inner fuse panel (Driver’s side fuse panel)
Description Fuse rating Protected component
MODULE 3 7.5A Sport Mode Switch, Natural Vacuum Leak Detection, VESS Unit
PDM 1 25A Smart Key Control Module
POWER OUTLET 15A Front Power Outlet
MODULE 5 7.5A Smart Key Control Module, Rear Seat Warmer Relay LH/RH
MODULE 2 7.5A BCM, Panorama Sunroof, Rain Sensor
TRUNK 10A I/P Junction Box (Trunk Lid Relay), Fuel Filler Door & Trunk Lid Switch, Trunk Room Lamp
CLOCK 10AA/V & Navigation Head Unit, Audio, Smart Key Control Module, Overhead Console Lamp,
Crash Pad Mood Lamp, VESS Unit,A/C Control Module, BCM, AMP,
Power Outside Mirror Switch, Driver/Passenger Door Mood Lamp
C/LIGHTER 15A Cigarette Lighter
HTD STRG 15A Steering Wheel Heater
A/CON 7.5AA/C Control Module, E/R Fuse & Relay Box (Blower Relay, Water Pump Relay),
Electronic A/C Compressor
WIPER 25A Multifunction Switch, Front Wiper Motor, E/R Fuse & Relay Box (Wiper Relay, Rain SNSR Relay)
S/HEATER FRT 20A Driver/Passenger CCS Cushion Warmer, Driver/Passenger Seat Warmer Module
E_WATER_PUMP 10A Hybrid Water Pump
HTD MIRR 10A Driver/Passenger Power Outside Mirror
MODULE 4 HEV 7.5AMCU, Hydraulic Power Unit, Low Voltage DC-DC Converter, BMS Control Module,
Active Air Flap
A/BAG IND 7.5A Instrument Cluster (Air Bag IND.)
START 7.5A Transaxle Range Switch, Hybrid Control Unit
S/HEATER RR 15A Rear Seat Warmer Relay LH/RH
P/SEAT PASS 20A Passenger Seat Manual Switch

757
Maintenance
DescriptionFuse rating Protected component
MODULE 1 7.5AHead Lamp Leveling Device Actuator LH/RH, Auto Head Lamp Leveling Device Module,
Driver IMS Module, BCM, Front Seat Warmer & CCS Switch,
Driver/Passenger CCS Control Module, Driver/Passenger Seat Warmer Module, Audio,
A/C Control Module, Electro Chromic Mirror, Lane Keeping Assist Module, Instrument Cluster
HCU 20A Hybrid Control Unit
A/BAG 15A Telltale Lamp, SRS Control Module, Passenger Weight Classification Sensor
P/WDW LH 25A I/P Junction Box (Power Window LH Relay), Driver Safety Power Window Module
AMP 30A AMP
PDM 2 7.5A Start Stop Button Switch, Smart Key Control Module, Fob Holder, Stop Lamp Switch
BMS 10A BMS Control Module
MDPS 10A EPS Control Module, Crash Pad Switch, Tire Pressure Monitoring Module, ATM Lever Indicator
PDM 3 7.5A Smart Key Control Module
P/WDW RH 25A I/P Junction Box (Power Window RH Relay), Passenger Safety Power Window Module
P/SEAT DRV 30A Driver IMS Module, Driver Seat Manual Switch, Driver Lumbar Support Switch
DR LOCK 20ATwo Turn Unlock Relay, I/P Junction Box (Door Lock Relay, Door Unlock Relay,
Turn Signal Lamp Sound Relay)
SUNROOF 20A Panorama Sunroof
IG 1 20A E/R Fuse & Relay Box (Fuse : ESC 3 10A, TCU 2 15A, ECU 4 10A, OPCU 2 10A)
POWER
CONNECTOR AUDIO 15A A/V & Navigation Head Unit, Audio
ROOM LP 10A Driver/Passenger Smart Key Outside Handle, Driver IMS Module, Lamp Auto Cut Relay,
Driver/Passenger Door Scuff Lamp, A/C Control Module, Data Link Connector, RF Receiver,
BCM, Electro Chromic Mirror, Instrument Cluster, Auto Light & Photo Sensor,
Tire Pressure Monitoring Module