2021 KIA NIRO PHEV spark plugs replace

5191
Driving your vehicle
The use of chains may adversely
affect vehicle handling.
Do not exceed 20 mph (30 km/h)
or the chain manufacturer’s recom-
mended speed limit, whichever is
lower.
Drive carefully and avoid bumps,
holes, sharp turns, and other road
hazards, which may cause the
vehicle to bounce.
Avoid sharp turns or locked-wheel
braking.Use high quality ethylene gly-
col coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because
it helps prevent corrosion in the cool-
ing system, lubricates the water
pump and prevents freezing. Be sure
to replace or replenish your coolant
in accordance with the maintenance
schedule in chapter 8. Before winter,
have your coolant tested to assure
that its freezing point is sufficient for
the temperatures anticipated during
the winter.
Check battery and cables
Winter puts additional burdens on
the battery system. Visually inspect
the battery and cables as described
in chapter 8. The level of charge in
your battery can be checked by an
authorized Kia dealer or a service
station.
Change to "winter weight" oil
if necessary
In some climates it is recommended
that a lower viscosity "winter weight"
oil be used during cold weather. See
chapter 9 for recommendations. If
you aren't sure what weight oil you
should use, consult an authorized
Kia dealer.
Check spark plugs and ignition
system
Inspect your spark plugs as
described in chapter 8 and replace
them if necessary. Also check all
ignition wiring and components to be
sure they are not cracked, worn or
damaged in any way.CAUTION- Snow chains
Chains that are the wrong size
or improperly installed can
damage your vehicle's brake
lines, suspension, body and
wheels.
Stop driving and retighten the
chains any time you hear them
hitting the vehicle.

Maintenance
10
7
Normal Maintenance Schedule - Non Turbo Models
The following maintenance services must be performed to ensure good emission control and performance.
Keep receipts for all vehicle emission services to protect your warranty. Where both mileage and time are shown, the
frequency of service is determined by whichever occurs first.
Number of months or driving distance, whichever comes first
Months1224364860728496108120132144156168180
Miles×1,0007.51522.530 37.5 45 52.5 60 67.5 75 82.5 90 97.5 105 112.5
Km×1,00012 24 36 48 60 72 84 96 108 120 132 144 156 168 180
Engine oil and engine oil
filter(Gasoline) 1.6 GDiRRRRRRRRRRRRRRR
Fuel additives *1Add every 7,500 miles (12,000 km) or 12 months
Air cleaner filterIIIRIIIRIIIRIII
Spark plugs(Gasoline) 1.6 GDiReplace every 100,000 miles (150,000 km) or 120 months
HSG belt *2Inspect every 7,500 miles (12,000 km) or 12months,
Replace every 60,000 miles (96,000 km) or 48 months
Rotate tiresRotate every 7,500 miles (12,000 km)
Climate control air filter-R-R-R-R-R-R-R-
MAINTENANCE INTERVALS
MAINTENANCE
ITEM
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
1: If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from your authorized Kia dealer along with information on how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, cracks, excessive wear or oil saturation and replace if necessary. If HSG belt noise occurred, readjust HSG belt tension before replace.
❈ As it is normal for engine oil to be consumed during driving, the amount of engine oil should be checked regularly.
❈ The replacement cycle of engine oil is set by the period which the performance of our recommended engine oil is maintained.
So, if recommended engine oil is not used, a replacement is required as in\
dicated severe usage condition.

713
Maintenance
Maintenance Under Severe Usage Conditions - Non Turbo Models
The following items must be serviced more frequently on cars normally used under severe driving conditions. Refer
to the chart below for the appropriate maintenance intervals.
R : Replace I : Inspect and, after inspection, clean, adjust, repair or replace if necessary
MAINTENANCE ITEMMAINTENANCE
OPERATIONMAINTENANCE INTERVALSDRIVING
CONDITION
Engine oil and engine oil filterREvery 3,750 miles (6,000 km)
or 6 monthsA, B, C, D, E,
F, G, H, I, J, K, L
Air cleaner filterRMore frequentlyC, E
Spark plugs RMore frequentlyA, B, F, G, H, I, K
Dual clutch transmission fluidREvery 75,000 miles (120,000 km)C, D, E, F, G, H, I, J
HSG (Hybrid Starter & Generator) belt
REvery 30,000 miles (48,000 km)
or 24 monthsC, D, E, K
IEvery 3,750 miles (6,000 km)
or 6 monthsC, D, E, K
Brake discs and pads, calipers and rotorsIMore frequentlyC, D, E, G, H
Parking brakeIMore frequentlyC, D, G, H
Steering gear rack, linkage and bootsIMore frequentlyC, D, E, F, G
Suspension ball jointsIMore frequentlyC, D, E, F, G

Maintenance
16 7
Vacuum crankcase ventilation
hoses
Inspect the surface of hoses for evi-
dence of heat and/or mechanical
damage. Hard and brittle rubber,
cracking, tears, cuts, abrasions, and
excessive swelling indicate deterio-
ration. Particular attention should be
paid to examine those hose surfaces
nearest to high heat sources, such
as the exhaust manifold.
Inspect the hose routing to assure
that the hoses do not come in con-
tact with any heat source, sharp
edges or moving component which
might cause heat damage or
mechanical wear. Inspect all hose
connections, such as clamps and
couplings, to make sure they are
secure, and that no leaks are pres-
ent. Hoses should be replaced
immediately if there is any evidence
of deterioration or damage.
Air cleaner filter
A Genuine Kia air cleaner filter is
recommended when the filter is
replaced.
Spark plugs
Make sure to install new spark plugs
of the correct heat range.
When assembling parts, be sure to
wipe the inside and outside of the
boot bottom of the ignition coil and
the insulator of the spark plug with a
soft cloth to prevent contamination of
the spark plug insulator.
Cooling system
Check the cooling system compo-
nents, such as the radiator, coolant
reservoir, hoses and connections for
leakage and damage. Replace any
damaged parts.
Coolant (Engine / Inverter)
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Dual clutch transmission Fluid
Inspect the dual clutch transmission
fluid according to the maintenance
schedule.
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and
any leakage. Replace any deteriorat-
ed or damaged parts immediately.

I11
Index
Vehicle load limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-193
Certification label . . . . . . . . . . . . . . . . . . . . . . . . . . 5-196
Tire and loading information label. . . . . . . . . . . . . 5-193
Vehicle modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Vehicle weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-197
Base curb weight . . . . . . . . . . . . . . . . . . . . . . . . . . 5-197
Cargo weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-197
GAW (Gross axle weight) . . . . . . . . . . . . . . . . . . . 5-197
GAWR (Gross axle weight rating) . . . . . . . . . . . . . 5-197
GVW (Gross vehicle weight). . . . . . . . . . . . . . . . . 5-197
GVWR (Gross vehicle weight rating) . . . . . . . . . . 5-197
Vehicle curb weight . . . . . . . . . . . . . . . . . . . . . . . . 5-197
Warning and indicator lights. . . . . . . . . . . . . . . . . . . . 4-106
Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-115
Warning lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-106
Washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30
Checking the washer fluid level . . . . . . . . . . . . . . . . 7-30
Welcome system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-139
Headlight (Headlamp) escort function . . . . . . . . . . 4-139
Interior light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-139
Pocket lamp (if equipped) . . . . . . . . . . . . . . . . . . . 4-139
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
Power windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32
Windshield defrosting and defogging. . . . . . . . . . . . . 4-157
Automatic climate control system . . . . . . . . . . . . . 4-157Defogging logic . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-158
Winter driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-189
Carry emergency equipment . . . . . . . . . . . . . . . . . 5-192
Change to "winter weight" oil if necessary . . . . . . 5-191
Check battery and cables . . . . . . . . . . . . . . . . . . . . 5-191
Check spark plugs and ignition system . . . . . . . . . 5-191
Don’t let your parking brake freeze . . . . . . . . . . . . 5-192
Don't let ice and snow accumulate underneath . . . 5-192
Snowy or icy conditions . . . . . . . . . . . . . . . . . . . . . 5-189
To keep locks from freezing. . . . . . . . . . . . . . . . . . 5-192
Use approved window washer anti-freeze
in system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-192
Use high quality ethylene glycol coolant. . . . . . . . 5-191
Wiper blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Blade inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Blade replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Wipers and washers . . . . . . . . . . . . . . . . . . . . . . . . . . 4-132
Front windshield washers. . . . . . . . . . . . . . . . . . . . 4-133
Rear window wiper and washer switch . . . . . . . . . 4-134
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . 4-132
W