2020 Hyundai Ioniq Hybrid spark plugs replace

5-156
Driving your vehicle
Check battery and cables
Winter temperatures affect battery
performance.Inspect the battery
and cables, as specified in the
chapter 7.The battery charging level
can be checked by an authorised
HYUNDAI dealer or in a service sta-
tion.
Change to "winter weight" oil if
necessary
In some regions during winter, it is
recommended to use the "winter
weight" oil with lower viscosity. For
further information, refer to the chap-
ter 8. When you are not sure about a
type of winter weight oil, consult an
authorised HYUNDAI dealer.Check spark plugs and ignition
system
Inspect the spark plugs, as speci-
fied in the chapter 7.If necessary,
replace them. Also check all ignition
wirings and components for any
cracks, wear-out, and damage.
To prevent locks from freezing
To prevent the locks from being
frozen, spray approved de-icing fluid
or glycerin into key holes. When a
lock opening is already covered with
ice, spray approved de-icing fluid
over the ice to remove it. When an
internal part of a lock freezes, try to
thaw it with a heated key. Carefully
use the heated key to avoid an injury.Use approved window washer
anti-freeze solution in system
To prevent the window washer from
being frozen, add authorised window
washer anti-freeze solution, as spec-
ified on the window washer contain-
er. Window washer anti-freeze solu-
tion is available from an authorised
HYUNDAI dealer, and most vehicle
accessory outlets. Do not use engine
coolant or other types of anti-freeze
solution, to prevent any damage to
the vehicle paint.

7-10
Maintenance
Normal maintenance schedule
Number of months or driving distance, whichever comes first
Months1224364860728496
Km×1,000153045607590105120
Spark plugs *4Replace every 150,000 km or 120 months
Vapour hose and fuel filler capII
Fuel tank air filterII
Vacuum hoseIIIIIIII
Fuel filter *5RR
Fuel lines, hoses and connectionsII
HSG (Hybrid Starter & Generator) belt *6Inspect every 15,000 km or 12 months,
and replace every 105,000km or 48 months
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
4: For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
*5: The fuel filter is considered to be maintenance free but periodic inspection is recommended for this maintenance schedule
depends on fuel quality. If there are some important matters like fuel flow restriction, surging, loss of power, hard starting prob-
lem etc, we recommend replacing the fuel filter immediately regardless of maintenance schedule and consulting with an autho-
rised HYUNDAI dealer for details.
*
6: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary.
If drive belt noise occurred, readjust drive belt tension before replace.

7-13
7
Maintenance
Maintenance under severe usage conditions
The following items must be serviced more frequently on vehicle mainly used under severe driving conditions.
Refer to the chart below for the appropriate maintenance intervals.
R : Replace I : Inspect and if necessary, adjust, correct, clean or replace
Maintenance itemMaintenance
operationMaintenance intervalsDriving condition
Engine oil and engine oil filterRReplace every 7,500 km or 6 monthsA, B, C, D, E,
F, G, H, I, J, K
Air cleaner filterRReplace more frequently
depending on the conditionC, E
Spark plugs RReplace more frequently
depending on the conditionA, B, H, I
HSG (Hybrid Starter & Generator) belt
REvery 45,000 km or 24 months
C, D, E, K
IEvery 15,000 km or 12 months
Dual clutch transmission fluidREvery 120,000 kmC, D, E, F, G, H, I, J

7-15
7
Maintenance
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Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the
vehicle is being driven in severe con-
ditions, more frequent oil and filter
changes are required.
HSG (Hybrid starter & genera-
tor) belt
The HSG belt should be changed at
the intervals specified in the mainte-
nance schedule.
Fuel lines, fuel hoses and con-
nections
Check the fuel lines, fuel hoses and
connections for leakage and dam-
age. We recommend an authorised
HYUNDAI dealer replace any dam-
aged or leaking parts immediately.
Fuel filter
A clogged filter can limit the speed at
which the vehicle may be driven,
damage the emission system and
cause multiple issues such as hard
starting. If an excessive amount of
foreign matter accumulates in the
fuel tank, the filter may require
replacement more frequently. After
installing a new filter, run the engine
for several minutes, and check for
leaks at the connections. Fuel filters
should be installed by an authorised
HYUNDAI dealer.
Vapour hose and fuel filler cap
The vapour hose and fuel filler cap
should be inspected at those inter-
vals specified in the maintenance
schedule. Make sure a new vapour
hose or fuel filler cap is correctly
replaced.
Air cleaner filter
A genuine HYUNDAI air cleaner filter
is recommended when the filter is
replaced.
Spark plugs
Make sure to install new spark plugs
of the correct heat range.
Cooling system
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Engine coolant/inverter
coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.