2021 KIA NIRO maintenance

7115
Maintenance
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in
the canister are drawn into the surge
tank through the purge control sole-
noid valve.
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve is
controlled by the Engine Control
Module (ECM); when the engine
coolant temperature is low during
idling, the PCSV closes so that evap-
orated fuel is not taken into the
engine. After the engine warms up
during ordinary driving, the PCSV
opens to introduce evaporated fuel to
the engine.
3. Exhaust emission control
system
The Exhaust Emission Control
System is a highly effective system
which controls exhaust emissions
while maintaining good vehicle per-
formance.
Engine exhaust gas precautions
(carbon monoxide)
Carbon monoxide can be present
with other exhaust fumes.
Therefore, if you smell exhaust
fumes of any kind inside your vehi-
cle, have it inspected and repaired
immediately. If you ever suspect
exhaust fumes are coming into
your vehicle, drive it only with all
the windows fully open. Have your
vehicle checked and repaired
immediately.
WARNING - Exhaust
Engine exhaust gases contain
carbon monoxide (CO). Though
colorless and odorless, it is
dangerous and could be lethal if
inhaled. Follow the instructions
on this page to avoid CO poi-
soning.

Maintenance
116 7
Do not operate the engine in con-
fined or closed areas (such as
garages) any more than what is
necessary to move the vehicle in or
out of the area.
When the vehicle is stopped in an
open area for more than a short
time with the engine running,
adjust the ventilation system (as
needed) to draw outside air into the
vehicle.
Never sit in a parked or stopped
vehicle for any extended time with
the engine running.
When the engine stalls or fails to
start, excessive attempts to restart
the engine may cause damage to
the emission control system.Operating precautions for catalyt-
ic converters (if equipped)
WARNING- Catalytic
converter
Keep away from the catalytic
converter and exhaust system
while the vehicle is running or
immediately thereafter. The
exhaust and catalytic systems
are very hot and may burn you.
WARNING- Fire
Do not park, idle or drive the
vehicle over or near flamma-
ble objects, such as grass,
vegetation, paper, leaves, etc.
A hot exhaust system can
ignite flammable items under
your vehicle.
Also, do not remove the heat
sink around the exhaust sys-
tem, do not seal the bottom of
the vehicle and do not coat
the vehicle for corrosion con-
trol. It may present a fire risk
under certain conditions.

7117
Maintenance
Your vehicle is equipped with a cat-
alytic converter emission control
device.
Therefore, the following precautions
must be observed:
Use only UNLEADED FUEL for
gasoline engines.
Do not operate the vehicle when
there are signs of engine malfunc-
tion, such as misfire or a noticeable
loss of performance.
Do not misuse or abuse the
engine. Examples of misuse are
coasting with the ignition off and
descending steep grades in gear
with the ignition off.
Do not operate the engine at high
idle speed for extended periods (5
minutes or more).
Do not modify or tamper with any
part of the engine or emission con-
trol system. All inspections and
adjustments must be made by an
authorized Kia dealer.
Avoid driving with an extremely low
fuel level. Running out of fuel could
cause the engine to misfire, dam-
aging the catalytic converter.Failure to observe these precautions
could result in damage to the catalyt-
ic converter and to your vehicle.
Additionally, such actions could void
your warranties.Perchlorate Material-special handling
may apply, See www.dtsc.ca.gov/haz-
ardouswaste/ perchlorate.
Notice to California Vehicle Dismantlers:
Perchlorate containing materials,
such as air bag inflators, seatbelt
pretensioners and keyless remote
entry batteries, must be disposed of
according to Title 22 California Code
of Regulations Chapter 67384.10
(a).
CALIFORNIA
PERCHLORATE NOTICE

89
Specifications, Consumer information, Reporting safety defects
Recommended SAE viscosity
number
Engine oil viscosity (thickness) has an
effect on fuel economy and cold
weather operating (engine start and
engine oil flowability). Lower viscosity
engine oils can provide better fuel
economy and cold weather perform-
ance; however, higher viscosity
engine oils are required for satisfacto-
ry lubrication in hot weather. Using
oils of any viscosity other than those
recommended could result in engine
damage. When choosing an oil, con-
sider the range of temperature your
vehicle will be operated in before the
next oil change. Proceed to select the
recommended oil viscosity from the
chart.
Temperature Range for SAE Viscosity Numbers
Temperature°C
(°F)-30 -20 -10 0 10 20 30 40 50
-10 0 20 40 60 80 100 120
(Gasoline) 1.6 GDi0W-20 / 5W-30
An engine oil displaying this API Certification Mark conforms
to the international Lubricant Specification Advisory
Committee (ILSAC). It is recommended to only use engine oils
that uphold this API Certification Mark. Requires grade engine oil, If
a lower grade engine oil(mineral oil including Semi-synthetic) is used, then the engine
oil and oil filter must be replaced as indicated severe maintenance condition.

817
Specifications, Consumer information, Reporting safety defects
Reporting Safety Defects.
If you believe that your vehicle has a defect which could
cause a crash or could cause injury or death, you should
immediately inform the National Highway Traffic Safety
Administration (NHTSA) in addition to notifying Kia
Motors America, Inc..
If NHTSA receives similar complaints, it may open an
investigation, and if it finds that a safety defect exists in a
group of vehicles, it may order a recall and remedy cam-
paign. However, NHTSA cannot become involved in indi-
vidual problems between you, your dealer, or Kia Motors
America, Inc..
To contact NHTSA, you may call the Vehicle Safety
Hotline toll-free at 1-888-327-4236 (TTY: 1-800-424-
9153); go to http://www.safercar.gov; download the
SaferCar mobile application; or write to: Administrator,
NHTSA, 1200 New Jersey Ave. SE., Washington, DC
20590. You can also obtain other information about
motor vehicle safety from http://www.safercar.gov.The following publications are available on
www.KiaTechinfo.com
Service manual:
This manual covers maintenance and recommended pro-
cedures for repair to engine and chassis components. It
is written for the Journeyman mechanic, but is simple
enough for most mechanically inclined owners to under-
stand.
Electrical troubleshooting manual:
This manual complements the Service Manual by provid-
ing indepth troubleshooting information for each electrical
circuit in your vehicle.
Owner's manual:
This manual describes the overall features and operating
procedures for the vehicle.
REPORTING SAFETY DEFECTS
(U.S. ONLY)ONLINE FACTORY AUTHORIZED MANUALS
(U.S. ONLY)

Index
4I
Dual Clutch Transmission (DCT). . . . . . . . . . . . . . . . . 5-16
Dual clutch transmission operation . . . . . . . . . . . . . 5-16
Good driving practices . . . . . . . . . . . . . . . . . . . . . . . 5-26
Economical operation . . . . . . . . . . . . . . . . . . . . . . . . . 5-182
Electrical Equipment (U.S. only) . . . . . . . . . . . . . . . . . 8-16
Installation of a mobile two-way radio system . . . . 8-16
Emergency starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Before Jump Starting (For Hybrid) . . . . . . . . . . . . . . 6-5
Jump starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Method to disconnect the (-) cable for regular
maintenance (For Hybrid) . . . . . . . . . . . . . . . . . . . . 6-7
Push-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Emission control system . . . . . . . . . . . . . . . . . . . . . . . 7-114
Crankcase emission control system . . . . . . . . . . . . 7-114
Evaporative emission control (including ORVR:
Onboard Refueling Vapor Recovery) system. . . . 7-114
Exhaust emission control system . . . . . . . . . . . . . . 7-115
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Engine clutch actuator fluid . . . . . . . . . . . . . . . . . . . . . 7-28
Checking the engine clutch actuator fluid level. . . . 7-28
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . 2-6, 7-4
Engine number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19
Changing the engine oil and filter . . . . . . . . . . . . . . 7-20
Checking the engine oil level . . . . . . . . . . . . . . . . . . 7-19ENGINE START/STOP button . . . . . . . . . . . . . . . . . . 5-11
ENGINE START/STOP button position . . . . . . . . . 5-11
Illuminated ENGINE START/STOP button . . . . . . 5-11
Starting the hybrid system . . . . . . . . . . . . . . . . . . . . 5-13
Explanation of scheduled maintenance items . . . . . . . 7-15
Exterior features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-176
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-176
Exterior overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Folding key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Immobilizer system . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Key operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Record your key number . . . . . . . . . . . . . . . . . . . . . . 4-4
Transmitter precautions . . . . . . . . . . . . . . . . . . . . . . . 4-6
Forward Collision-Avoidance Assist (FCA)
(Front view camera only) . . . . . . . . . . . . . . . . . . . . . 5-54
Brake operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-58
Detecting sensor (Front view camera) . . . . . . . . . . . 5-59
FCA warning message and function control . . . . . . 5-57
Function malfunction . . . . . . . . . . . . . . . . . . . . . . . . 5-61
Function setting and activation . . . . . . . . . . . . . . . . 5-54
Limitation of the function . . . . . . . . . . . . . . . . . . . . 5-63
Forward Collision-Avoidance Assist (FCA)
(Sensor fusion) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-70
Brake operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-75
E
F

Index
8I
Tail lamp (inside) (Bulb type) bulb replacement . . . 7-95
Vanity mirror lamp (Bulb type) bulb replacement . 7-101
Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-125
Battery saver function . . . . . . . . . . . . . . . . . . . . . . 4-125
Check headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-131
Daytime running light . . . . . . . . . . . . . . . . . . . . . . 4-125
Front fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-131
Headlight escort function . . . . . . . . . . . . . . . . . . . . 4-125
High Beam Assist (HBA) . . . . . . . . . . . . . . . . . . . . 4-128
High beam operation . . . . . . . . . . . . . . . . . . . . . . . 4-127
Lighting control . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-126
Turn signals and lane change signals . . . . . . . . . . . 4-130
Luggage volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Maintenance services . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Owner maintenance precautions . . . . . . . . . . . . . . . . 7-6
Owner’s responsibility . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53
Inside rearview mirror . . . . . . . . . . . . . . . . . . . . . . . 4-53
Outside rearview mirror . . . . . . . . . . . . . . . . . . . . . 4-63
Navigation-based Smart Cruise Control (NSCC). . . . 5-141
Function operation . . . . . . . . . . . . . . . . . . . . . . . . . 5-143
Function settings . . . . . . . . . . . . . . . . . . . . . . . . . . 5-142Highway Auto Curve Slowdown . . . . . . . . . . . . . . 5-142
Online factory authorized manuals (U.S. only) . . . . . . 8-17
Electrical troubleshooting manual . . . . . . . . . . . . . . 8-17
Owner's manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Service manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Owner maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Owner maintenance schedule . . . . . . . . . . . . . . . . . . 7-7
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31
Checking the parking brake . . . . . . . . . . . . . . . . . . . 7-31
Rear Cross-Traffic Collision Warning (RCCW). . . . . 5-164
Function description . . . . . . . . . . . . . . . . . . . . . . . . 5-164
Function setting and activation . . . . . . . . . . . . . . . 5-164
Warning message and function control . . . . . . . . . 5-166
Rear View Monitor (RVM) . . . . . . . . . . . . . . . . . . . . . 4-121
Recommended lubricants and capacities . . . . . . . . . . . . 8-8
Recommended SAE viscosity number. . . . . . . . . . . . 8-9
Refrigerant label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Regenerative braking system . . . . . . . . . . . . . . . . . . . . 5-28
Regenerative Braking (Paddle Shifter) . . . . . . . . . . 5-28
M
P
O
R
N

I9
Index
Reporting Safety Defects (U.S. only) . . . . . . . . . . . . . . 8-17
Reverse Parking Distance Warning (PDW) . . . . . . . . 4-122
Non-operational conditions of Reverse Parking
Distance Warning . . . . . . . . . . . . . . . . . . . . . . . . . 4-123
Operation of Reverse Parking Distance Warning . 4-122
Reverse Parking Distance Warning precautions . . 4-124
Self-diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-124
Road warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Hazard warning flasher . . . . . . . . . . . . . . . . . . . . . . . 6-2
Scheduled maintenance service . . . . . . . . . . . . . . . . . . . 7-9
Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Driver position memory system (for power seat) . . 3-10
Front seat adjustment - manual . . . . . . . . . . . . . . . . . 3-7
Front seat adjustment - power (for driver’s seat) . . . . 3-8
Headrest (for front seat) . . . . . . . . . . . . . . . . . . . . . . 3-12
Rear seat adjustment . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Seatback pocket . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Care of seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Pre-tensioner seat belt . . . . . . . . . . . . . . . . . . . . . . . 3-29
Seat belt precautions . . . . . . . . . . . . . . . . . . . . . . . . 3-31
Seat belt restraint system . . . . . . . . . . . . . . . . . . . . . 3-21
Smart Cruise Control (SCC). . . . . . . . . . . . . . . . . . . . 5-119
Detecting Sensor (front view camera/front radar) . 5-132
Driving Assist button . . . . . . . . . . . . . . . . . . . . . . . 5-119Limitations of the function. . . . . . . . . . . . . . . . . . . 5-135
Set SCC Reaction . . . . . . . . . . . . . . . . . . . . . . . . . . 5-127
To convert to cruise control mode . . . . . . . . . . . . . 5-134
Vehicle distance . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-127
When the lane ahead is clear . . . . . . . . . . . . . . . . 5-128
When there is a vehicle ahead of you in your lane. . 5-129
Smart key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Immobilizer system . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Mechanical key operations. . . . . . . . . . . . . . . . . . . . 4-16
Record your key number . . . . . . . . . . . . . . . . . . . . . 4-11
Smart key function . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Smart key precautions . . . . . . . . . . . . . . . . . . . . . . . 4-15
Special driving conditions . . . . . . . . . . . . . . . . . . . . . 5-184
Driving at night . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-187
Driving in flooded areas . . . . . . . . . . . . . . . . . . . 5-188
Driving in the rain . . . . . . . . . . . . . . . . . . . . . . . . 5-187
Driving off-road . . . . . . . . . . . . . . . . . . . . . . . . . . 5-188
Hazardous driving conditions . . . . . . . . . . . . . . . 5-184
Highway driving . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-188
Reducing the risk of a rollover. . . . . . . . . . . . . . . . 5-184
Rocking the vehicle . . . . . . . . . . . . . . . . . . . . . . . . 5-186
Smooth cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 5-186
Steering wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49
Electric Power Steering(EPS) . . . . . . . . . . . . . . . . . 4-49
Heated steering wheel . . . . . . . . . . . . . . . . . . . . . . . 4-51
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
Tilt and telescopic steering . . . . . . . . . . . . . . . . . . . 4-50
S