2021 KIA NIRO HYBRID EV relay

447
Features of your vehicle
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 EPS is controlled by a power
steering control unit which senses
the steering wheel torque and vehi-
cle speed to command the motor.
The steering becomes heavier as the
vehicle’s speed increases and
becomes lighter as the vehicle’s
speed decreases for optimum 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 posi-
tion. This happens as the system
performs the EPS system diagnos-
tics. When the diagnostics are
completed, the steering wheel 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.
• If the Electric Power Steering
System does not operate normally,
the warning light will illuminate on
the instrument cluster. The steer-
ing 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.
(Continued)
STEERING WHEEL

• Tire terminology and definitions . . . . . . . . . . . . . . . . 7-51
• All season tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54
• Summer tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54
• Snow tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55
• Radial-ply tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55
• Low aspect ratio tire . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-58
• Inner panel fuse replacement . . . . . . . . . . . . . . . . . . . 7-59
• Engine compartment fuse replacement. . . . . . . . . . . 7-61
• Fuse/relay panel description. . . . . . . . . . . . . . . . . . . . 7-64
Light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-86
• Bulb replacement precaution . . . . . . . . . . . . . . . . . . 7-86
• Light bulb position (Front). . . . . . . . . . . . . . . . . . . . . 7-87
• Light bulb position (Rear) . . . . . . . . . . . . . . . . . . . . . 7-88
• Light bulb position (Side) . . . . . . . . . . . . . . . . . . . . . . 7-89
• Headlamp (High/Low beam) (Bulb type) bulb
replacement (Headlamp type A) . . . . . . . . . . . . . . . 7-90
• Front turn signal lamp (Bulb type) bulb
replacement (Headlamp type A) . . . . . . . . . . . . . . . 7-91
• Front side marker (Bulb type) bulb replacement
(Headlamp type A) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-92
• Headlamp (High/Low beam) (LED type) bulb
replacement (Headlamp type B) . . . . . . . . . . . . . . . 7-92• Front turn signal (LED type) bulb replacement
(Headlamp type B) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-93
• Front side marker (LED type) bulb replacement
(Headlamp type B) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-93
• Daytime running lamp/Position lamp (LED type)
bulb replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-93
• Front fog lamp (Bulb/LED type) bulb
replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-94
• Stop and tail lamp, Rear turn signal lamp
(Bulb type) bulb replacement . . . . . . . . . . . . . . . . . 7-94
• Tail lamp (inside) (Bulb type) bulb replacement . . . 7-95
• Rear side marker (Bulb type) bulb replacement . . . 7-96
• Stop and tail lamp (LED type) bulb replacement . . 7-98
• Rear side marker (LED type) bulb replacement . . . 7-98
• Back-up lamp (Bulb type) bulb replacement . . . . . . 7-98
• License plate lamp (Bulb type) bulb replacement . . 7-99
• High mounted stop lamp (LED type) bulb
replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-99
• Side repeater lamp (LED type) bulb replacement. . 7-100
• Map lamp (Bulb type) bulb replacement . . . . . . . . 7-100
• Map lamp (LED type) bulb replacement . . . . . . . . 7-101
• Vanity mirror lamp (Bulb type) bulb replacement. . 7-101
• Room lamp (Bulb type) bulb replacement . . . . . . . 7-102
• Room lamp (LED type) bulb replacement . . . . . . . 7-102
• Liftgate room lamp (Bulb type) bulb replacement . . 7-103
7

759
Maintenance
✽ ✽
NOTICE
• When replacing 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.
Inner panel fuse replacement
1. Turn the engine start/stop button
to the OFF position and all other
switches off.
2. Open the fuse panel cover.
If the switch is located in the “OFF”
position, a caution indicator will be
displayed in the cluster.
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 new
fuse or relay fits tightly into
the clips. Failure to tightly
install the fuse or relay may
cause damage to the wiring
and electric systems.
Do not remove fuses, relays
and terminals fastened with
bolts or nuts. The fuses, relays
and terminals may not be fas-
tened correctly which may
cause vehicle damage.
ODEP079017

Maintenance
60 7
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.
ODEP079020
CAUTION
Do not input any other objects
except fuses or relays into
fuse/relay terminals, such as a
driver or wiring. It may cause
contact failure and system
malfunction.
Do not plug in screwdrivers or
aftermarket wiring into the ter-
minal originally designed for
fuse and relays only. The elec-
trical system and wiring of the
vehicle interior may be dam-
aged or burned due to contact
failure.
If you directly connect the
wire on the taillight or replace
the bulb which is over the reg-
ulated capacity to install trail-
ers, etc., the inner junction
block can get burned.

Maintenance
64 7
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.
ODEP079024
ODEP079117N
■Driver’s side fuse panel (Hybrid)

765
Maintenance
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.
ODEP079024
ODEP079118N
■Driver’s side fuse panel (Plug-in Hybrid)

Maintenance
66 7
Instrument panel (Driver’s side fuse panel) (Hybrid)
Fuse NameFuse ratingCircuit Protected
MODULE 510AElectro Chromic Mirror, Audio/Video & Navigation Head Unit, Audio, Shift Lever Indicator, Air Conditioner
Control Module, Rear Seat Warmer Control Module, Front Air Ventilation Seat Control Module, Front Seat
Warmer Control Module, Head Lamp Leveling Device Actuator LH/RH, Crash Pad Switch, AMP (Amplifier)
MODULE 410ALane Keeping Assist Control Module, Crash Pad Switch, Blind-Spot Collision Warning (BCW) Radar Left
Handle side/Right Handle side, EPB, VESS, Front Seat Warmer Control Module
INTERIOR
LAMP10AFront Vanity Lamp LH/RH, Room Lamp, Overhead Console Lamp, Luggage Lamp, Mood Lamp, BCM,
Wireless Charger
A/BAG15APassenger Occupant Detection Sensor, ACU
IG 125AEngine Room Junction Block (Fuse - DCT4, HPCU2, ACTIVE HYDRAULIC BOOSTER3, ECU3)
CLUSTER10AInstrument Cluster
MODULE 310ABCM (Body Control Module), DCT (Dual Clutch Transmission) Shift Lever, Stop Lamp Switch, Driver Door
Module, Passenger Door Module
MEMORY 27.5AActive Air Flap Unit, VESS
MODULE 810AActive Air Flap Unit, Electric Water Pump (Engine), Engine Room Junction Block (Battery C/Fan Relay),
BMS (Battery Management System) Control Module
A/BAG IND7.5AAir Conditioner Control Module, Instrument Cluster
START7.5A[With Smart Key/With Immobilizer] Inhibitor Switch

767
Maintenance
Fuse NameFuse ratingCircuit Protected
MODULE 210AEngine Room Junction Block (Power Outlet Relay), Wireless Charger, BCM (Body Control Module), USB
Charger, Smart Key Control Module, Audio, BMS (Battery Management System) Control Module,
Audio/Video & Navigation Head Unit, Driver Power Outside Mirror Switch, AMP (Amplifier)
PDM 37.5A[Without Smart Key] Immobilizer Module
[With Smart Key] Smart Key Control Module
MEMORY 110AInstrument Cluster, Driver IMS (Integrated memory system) Module, BCM (Body Control Module), Air
Conditioner Control Module, Auto Light & Photo Sensor, Driver Door Module, Passenger Door Module,
ECM (Electric Chromic Mirror)
MULTI MEDIA15AAudio, Audio/Video & Navigation Head Unit
EWP10AElectric Water Pump (HEV)
MDPS7.5AMDPS (Motor Driven Power Steering) Unit
TAIL GATE10ATail Gate Relay, ICM Relay Box (Fuel Filler Door Relay), Fuel Filler Switch
PDM 115ASmart Key Control Module
MODULE 77.5AFront Seat Warmer Control Module, AC Inverter (110V), Front Air Ventilation Seat Control Module, Rear
Seat Warmer Module, AC Inverter Module
WIPER (RR)15AEngine Room Junction Block (Wiper RR Relay), Rear Wiper Motor
HEATED
STEERING15ABCM (Body Control Module)
SUNROOF20ASunroof Motor