2020 Hyundai Tucson spark plugs replace

5-159
Driving your vehicle
5
Check battery and cables
The winter temperature increases
the battery consumption.Inspect
the battery and cables, as speci-
fied in chapter 7.The battery charg-
ing level can be checked by an
authorised HYUNDAI dealer or in a
service station.
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 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 so are the
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 (Petrol Engine [1.6 T-GDI])
Months1224364860728496
Km x 1,0001020304050607080
Drive belts *1IIII
Engine oil and engine oil filter *2 *3RRRRRRRR
Intercooler, in/out hose, air intake hoseIIIIIIII
Fuel additives *4Add every 10,000 km or 12 months
Air cleaner filterIIIRIIIR
Spark plugs *5Replace every 70,000 km or 84 months
Vapour hose and fuel filler capI
Fuel tank air filter (if equipped)I
Vaccum hose (if equipped)IIIIIIII
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
1: Inspect drive belt tensioner, idler and alternator pulley and if necessary correct or replace.
*2: Check the engine oil level for leaks every 500 km or before starting a long trip.
*3: The engine oil level should be checked regularly and maintained properly. Operating with an insufficient amount of oil can dam-
age the engine, and such damage is not covered by warranty.
*
4: If good quality petrols meeting Europe Fuel standards (EN228) or equivalent are not available, using one bottle of additive is
recommended. Additives are available from your authorised HYUNDAI dealer along with information on how to use them. Do
not mix other additives.
*
5: For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

7-14
Maintenance
Maintenance itemMaintenance
operationMaintenance intervalsDriving
condition
Engine oil and engine oil filterR5,000 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 plugsRReplace more frequently
depending on the conditionB, H
Steering gear rack, linkage and bootsIInspect more frequently
depending on the conditionC, D, E, F, G
Front suspension ball jointsIInspect more frequently
depending on the conditionC, D, E, F, G
Disc brakes and pads, calipers and rotorsIInspect more frequently
depending on the conditionC, D, E, G, H
Parking brakeIInspect more frequently
depending on the conditionC, D, G, H
Driveshaft and bootsIInspect more frequently
depending on the conditionC, D, E, F, G, H, I, J
Maintenance Under Severe Usage and Low Mileage Conditions (Petrol Engine [1.6 T-GDI])
The following items must be serviced more frequently on vehicles mainly used under severe driving conditions.
Refer to the chart below for the appropriate maintenance intervals.
R : Replace or change. I : Inspect and if necessary, adjust, correct, clean or replace.

7-16
Maintenance
Normal Maintenance Schedule (Petrol Engine [2.0 GDI])
Months1224364860728496
Km x 1,000153045607590105120
Drive belts *1IIII
Engine oil and engine oil filter *2 *3RRRRRRRR
Fuel additives *4Add every 15,000 km or 12 months
Air cleaner filterIIRIIRII
Spark plugs *5Replace every 150,000 km or 120 months
Vapour hose and fuel filler capII
Fuel tank air filter (if equipped)II
Vaccum hose (if equipped)IIIIIIII
Fuel filter *6RR
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
1: Inspect drive belt tensioner, idler and alternator pulley and if necessary correct or replace.
*2: Check the engine oil level for leaks every 500 km or before starting a long trip.
*3: The engine oil level should be checked regularly and maintained properly. Operating with an insufficient amount of oil can dam-
age the engine, and such damage is not covered by warranty.
*
4: If good quality petrols meeting Europe Fuel standards (EN228) or equivalent are not available, using one bottle of additive is
recommended. Additives are available from your authorised HYUNDAI dealer along with information on how to use them. Do
not mix other additives.
*
5: For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
*6: The fuel filter is considered to be maintenance free but periodic inspection is recommended for this maintenance schedule
depending on fuel quality. If there are some important matters like fuel flow restriction, surging, loss of power, or hard starting
problems etc, we recommend replacing the fuel filter immediately regardless of maintenance schedule and consulting with an
authorised HYUNDAI dealer for details.
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

7-20
Maintenance
Maintenance itemMaintenance
operationMaintenance intervalsDriving
condition
Engine oil and engine oil filterR7,500 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 plugsRReplace more frequently
depending on the conditionB, H
Steering gear rack, linkage and bootsIInspect more frequently
depending on the conditionC, D, E, F, G
Front suspension ball jointsIInspect more frequently
depending on the conditionC, D, E, F, G
Disc brakes and pads, calipers and rotorsIInspect more frequently
depending on the conditionC, D, E, G, H
Parking brake (if equipped)IInspect more frequently
depending on the conditionC, D, G, H
Driveshaft and bootsIInspect more frequently
depending on the conditionC, D, E, F, G, H, I, J
Maintenance Under Severe Usage and Low Mileage Conditions (Petrol Engine [2.0 GDI])
The following items must be serviced more frequently on vehicles mainly used under severe driving conditions.
Refer to the chart below for the appropriate maintenance intervals.
R : Replace or change. I : Inspect and if necessary, adjust, correct, clean or replace.

7-28
Maintenance
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 that a new
vapour hose or fuel filler cap is cor-
rectly replaced.
Vacuum crankcase ventilation
hoses (if equipped)
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
We recommend that the air cleaner
filter be replaced by an authorised
HYUNDAI dealer.
Spark plugs (For petrol
Engine)
Make sure to install new spark plugs
of the correct heat range.
Valve clearance (For petrol
Engine)
Inspect excessive valve noise and/or
engine vibration and adjust if neces-
sary. We recommend that the system
be serviced by an authorised
HYUNDAI dealer.
Cooling system
Check the cooling system parts,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Do not disconnect and inspect
spark plugs when the engine is
hot. You may burn yourself.
WARNING