2018 KIA NIRO PLUG-IN HYBRID engine coolant

Maintenance
30
8
If the coolant level is low, add enough
specified coolant to provide protec-
tion against freezing and corrosion.
Bring the level to MAX, but do not
overfill. If frequent additions are
required, see an authorized Kia deal-
er for a cooling system inspection.Recommended coolant
When adding coolant, use only
deionized water or soft water for
your vehicle and never mix hard
water in the coolant filled at the fac-
tory. An improper coolant mixture
can result in serious malfunction or
engine damage.
The engine in your vehicle has alu- minum engine parts and must be
protected by an ethylene-glycol
with phosphate based coolant to
prevent corrosion and freezing.
DO NOT USE alcohol or methanol coolant or mix them with the spec-
ified coolant.
Do not use a solution that contains more than 60% antifreeze or less
than 35% antifreeze. This would
reduce the effectiveness of the
solution. For mixture percentage, refer to the
following table.
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
5°F (-15°C)35 65
-13°F (-25°C)4060
-31°F (-35°C)5050
-49°F (-45°C)6040

831
Maintenance
✽
✽NOTICE
Make sure the coolant cap is proper-
ly closed after refill of coolant.
Otherwise the engine could be over-
heated while driving.
1. Check if the radiator cap label is
straight In front.WARNING
Radiator cap
Do not remove the radiator cap
when the engine and radiator
are hot. Scalding hot coolant
and steam may blow out under
pressure which may result in
serious injury.
■Inverter coolant reservoir cap (Hybrid)
■Engine coolant reservoir cap
ODE076004■Inverter coolant reservoir cap (Plug-in Hybrid)
ODEP077004
ODE076006
OQL075072
■ Engine room front view

Maintenance
32
8
2. Make sure that the tiny protru-
sions inside the coolant cap
should be securely interlocked.
Changing the coolant
Have the coolant changed by an
authorized Kia dealer according to
the Maintenance Schedule at the
beginning of this chapter.
CAUTION
Put a thick cloth or fabric
around the radiator cap beforerefilling the coolant in order toprevent the coolant from over-flowing into engine parts suchas the generator.
ODE076007
■ Engine room rear view

Maintenance
114
8
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.
Vehicle modifications
This vehicle should not be modified.
Modification of your vehicle could
affect its performance, safety or
durability and may even violate gov-
ernmental safety and emissions reg-
ulations.
In addition, damage or performance
problems resulting from any modifi-
cation may not be covered under
warranty.
If you use unauthorized electronic
devices, it may cause the vehicle to
operate abnormally, wire damage,
battery discharge and fire. For your
safety, do not use unauthorized
electronic devices.
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.

97
Specifications, Consumer information, Reporting safety defects
RECOMMENDED LUBRICANTS AND CAPACITIES
To help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality.
The correct lubricants also help promote engine efficiency that results in improved fuel economy.
These lubricants and fluids are recommended for use in your vehicle.
*1Refer to the recommended SAE viscosity numbers on the next page.
*2Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel econo my by reducing
the amount of fuel necessary to overcome engine friction. Often, these improvements are difficult to measure in everyday driving, but in a year’s
time, they can offer significant cost and energy savings.
Lubricant VolumeClassification
Engine oil *1*2
(drain and refill)
Recommends
4.01 US qt. (3.8 liter)0W-20 API SN or ACEA C2
Dual Clutch Transmission Fluid1.69 ~ 1.79 US qt. (1.6 ~ 1.7 liter)
SAE 70W, API GL-4
(Recommended HK SYN DCTF 70W (SK),
SPIRAX S6 GHME 70W DCTF (H.K.SHELL), GS DCTF HD 70W (GS CALTEX))
Coolant6.31 US qt. (5.98 liter)Mixture of antifreeze and water
(Ethylene glycol base coolant for aluminum radiator)
Inverter coolant2.56 US qt. (2.43 liter)Mixture of antifreeze and water
(Ethylene glycol base coolant for aluminum radiator)
Brake fluid0.425 ± 0.025 US qt. (402.6 ± 24.4 cc)DOT 3 or DOT 4
Engine clutch actuator fluid0.105 ± 0.021 US qt. (100 ± 20 cc)DOT 3 or DOT 4
FuelHEV47.5 US qt. (45 liter)Refer to Fuel requirements in chapter 1.PHEV45.4 US qt. (43 liter)

Index
4I
Clean air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
148
Climate control air filter . . . . . . . . . . . . . . . . . . . . . . . . 8-40Filter inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-40
Filter replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-40
Clothes hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-161
Combined instrument, see instrument cluster . . . . . . . 4-53
Consumer assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 8-28 Checking the coolant level . . . . . . . . . . . . . . . . . . . . 8-28
Engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29
Inverter coolant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29
Recommended coolant . . . . . . . . . . . . . . . . . . . . . . . 8-30
Changing the coolant . . . . . . . . . . . . . . . . . . . . . . . . 8-32
Cooling fluid, see engine coolant . . . . . . . . . . . . . . . . . 8-28
Crankcase emission control system . . . . . . . . . . . . . . 8-113
Cruise control system . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47 To set cruise control speed . . . . . . . . . . . . . . . . . . . . 6-48
To increase cruise control set speed . . . . . . . . . . . . . 6-48
To decrease the cruising speed . . . . . . . . . . . . . . . . . 6-49
To temporarily accelerate with the cruise control on6-49
To cancel cruise control . . . . . . . . . . . . . . . . . . . . . . 6-49
To resume cruising speed at more than approximately 20mph (30 km/h) . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50
To turn cruise control off . . . . . . . . . . . . . . . . . . . . . 6-50
Cup holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-152
Curtain air bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62 Dashboard illumination, see instrument panel
illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-56
Dashboard, see instrument cluster . . . . . . . . . . . . . . . . 4-53
Day/night rearview mirror . . . . . . . . . . . . . . . . . . . . . . 4-48
Daytime running light. . . . . . . . . . . . . . . . . . . . . . . . . 4-116
Defogging (Windshield) . . . . . . . . . . . . . . . . . . . . . . . 4-145
Defroster (Rear window) . . . . . . . . . . . . . . . . . . . . . . 4-129
Defrosting (Windshield) . . . . . . . . . . . . . . . . . . . . . . . 4-145
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-\
2
Disarmed stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Display illumination, see instrument panel illumination . 4-56
Displays, see instrument cluster . . . . . . . . . . . . . . . . . . 4-53
Distance to empty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-60
Door locks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
20 from outside the vehicle . . . . . . . . . . . . . . . . . . . . . . 4-20
from inside the vehicle . . . . . . . . . . . . . . . . . . . . . . . 4-21
Central door lock switch . . . . . . . . . . . . . . . . . . . . . 4-22
Child-protector rear door lock . . . . . . . . . . . . . . . . . 4-23
Drinks holders, see cup holders . . . . . . . . . . . . . . . . . 4-152
Driver Attention Alert (DAA) . . . . . . . . . . . . . . . . . . . . 6-82 System setting and activation . . . . . . . . . . . . . . . . . . 6-82
Resetting the system. . . . . . . . . . . . . . . . . . . . . . . . . 6-84
System disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-84
System malfunction . . . . . . . . . . . . . . . . . . . . . . . . . 6-84
Driver position memory system . . . . . . . . . . . . . . . . . . . 3-9D

Index
6I
Fuel lines, fuel hoses and connections . . . . . . . . . . . 8-22
Vapor hose and fuel filler cap . . . . . . . . . . . . . . . . . 8-22
Vacuum crankcase ventilation hoses . . . . . . . . . . . . 8-23
Air cleaner filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Spark plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Coolant (Engine/Inverter). . . . . . . . . . . . . . . . . . . . . 8-23
Dual clutch transmission Fluid . . . . . . . . . . . . . . . . 8-23
Brake hoses and lines . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24
Brake discs, pads, calipers and rotors . . . . . . . . . . . 8-24
Exhaust pipe and muffler . . . . . . . . . . . . . . . . . . . . . 8-25
Suspension mounting bolts . . . . . . . . . . . . . . . . . . . 8-25
Steering gear box, linkage & boots/lower arm ball joint . . . . . . . . . . . . . . . . . . . . . . . . 8-25
Drive shafts and boots . . . . . . . . . . . . . . . . . . . . . . . 8-25
Air conditioning refrigerant . . . . . . . . . . . . . . . . . . . 8-25
Exterior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-105
Exterior features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-165 Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-165
Exterior overview (Front) . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Exterior overview (Rear) . . . . . . . . . . . . . . . . . . . . . . . . 2-3 FCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . 5-35
Flat tire (with Tire Mobility Kit) . . . . . . . . . . . . . . . . . 7-18
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
"Notes on the safe use of the Tire Mobility Kit" . . . 7-19
Components of the Tire Mobility Kit . . . . . . . . . . . 7-21
Using the Tire Mobility Kit . . . . . . . . . . . . . . . . . . . 7-22
Distributing the sealant . . . . . . . . . . . . . . . . . . . . . . 7-24
Checking the tire inflation pressure . . . . . . . . . . . . . 7-25
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
Floor mat anchor(s) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-162
Fluid Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33
Engine clutch actuator fluid . . . . . . . . . . . . . . . . . . . 8-34
Washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-36
Fog lamp/DRL bulb replacement . . . . . . . . . . . . . . . . . 8-97
Fog light (Front) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-120
Folding key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
4 Record your key number . . . . . . . . . . . . . . . . . . . . . . 4-4
Folding the outside rearview mirror . . . . . . . . . . . . . . . 4-52
Folding the rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Front seat adjustment (Manual) . . . . . . . . . . . . . . . . . . . 3-7
Front seat adjustment (Power) . . . . . . . . . . . . . . . . . . . . 3-8
Front turn signal lamp bulb replacement . . . . . . . . . . . 8-96
Fuel filler lid (Hybrid) . . . . . . . . . . . . . . . . . . . . . . . . . 4-34 Opening the fuel filler lid. . . . . . . . . . . . . . . . . . . . . 4-34
Closing the fuel filler lid . . . . . . . . . . . . . . . . . . . . . 4-34F