pressure HYUNDAI I20 2020 Service Manual

10-14
Maintenance
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Kmsx1,000
1.51020304050607080
Months
2 1224364860728496
Years
- 12345678
Tyre Pressure,condition & rotation - I,TR I,TR I,TR I,TR I,TR I,TR I,TR I,TR
Fuel lines, hoses and connections IIIIIIII
iMT system clutch tube and line - I IIIIIII
Driveshafts & bootsIIIIIIIII
Fluid leakages IIIIIIIII
Front and rear wheel bearings & bushes Inspect if reqd.
Parking brake (disc/drum ,shoe & operation) - CCCCCCCC
Wheel Alignment & Balancing - Inspect if reqd.
FINAL CHECKS
Bolt and nuts on chasis and body I I IIIIIII
Lubricate locks & hinges ILLLLLLLL
Check all electrical systems (Drive belts ,alterna-
tor)*
9
IIIIIIIII
Warning lights operation & GDS system check I IIIIIIII
Ext & int. lights, horn & gaugesIIIIIIIII
NORMAL MAINTENANCE SCHEDULE - PETROL ENGINE (CONT.)
I : Inspect and if necessary adjust,top-up, clean or replace
R : ReplaceC : Clean and Replace if necessary
TR : Tyre Rotation L : Lubricate

10-20
Maintenance
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE (CONT.)
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Kmsx1,000
1.51020304050607080
Months
2 1224364860728496
Years
- 12345678
Tyre Pressure,condition & rotation - I,TR I,TR I,TR I,TR I,TR I,TR I,TR I,TR
Fuel lines, hoses and connectionsIIIIIIIII
Driveshafts & bootsIIIIIIIII
Fluid leakages I IIIIIIII
Front and rear wheel bearings & bushes Inspect if reqd.
Parking brake (disc/drum ,shoe & operation) - C CCCCCCC
Wheel Alignment & Balancing - Inspect if reqd.
FINAL CHECKS
Bolt and nuts on chasis and body I I IIIIIII
Lubricate locks & hinges ILLLLLLLL
Check all electrical systems (Drive belts ,alterna-
tor)*
9
IIIIIIIII
Warning lights operation & GDS system check I IIIIIIII
Ext & int. lights, horn & gaugesIIIIIIIII
C : Clean and Replace if necessary
TR : Tyre Rotation L : Lubraicate I : Inspect and if necessary adjust,top-up, clean or replace
R : Replace

10-24
Maintenance
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the car
is being driven in severe conditions,
more frequent oil and filter changes are
required.
Drive belts
Inspect all drive belts for evidence
of cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked
periodically for proper tension and
adjusted as necessary.
NOTICE
When you are inspecting the belt, place
the ignition switch in the LOCK/OFF or
ACC position.
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.
We recommend that the fuel filter be
replaced by an authoized HYUNDAI
dealer.
Fuel lines, fuel hoses and
connections
Check the fuel lines, fuel hoses and
connections for leakage and damage.
We recommend that the fuel lines, fuel
hoses and connections be replaced by
an authoized HYUNDAI dealer.
WARNING
Diesel Engine
Never manipulate or modify the
injection system while running the
diesel engine or within 30 seconds
after turning OFF the diesel engine. The
high-pressure pump, high-pressure
pipes, rail, and injectors are still subject
to high pressure immediately after
stopping the diesel engine.
When the fuel leakage vents out, it
may cause serious body injury. Any
people, who are implanted with the
artificial cardiac pacemaker, should
remain away from the ECU or the
wiring harness by at least 30 cm,
while running the diesel engine. The
high currents of the electronic engine
control system produce a considerable
amount of magnetic fields.
Vapor hose and fuel filler cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Make sure
that a new vapor hose or fuel filler cap is
correctly replaced.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

10-32
Maintenance
The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is filled
at the factory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and
before traveling to a colder climate.
NOTICE
• Do not drive with no engine coolant.
It may cause water pump failure and
engine seizure, etc.
• When the engine overheats from
low engine coolant, suddenly adding
engine coolant may cause cracks
in the engine. To prevent damage,
add engine coolant slowly in small
quantities.
Checking the coolant level
OBI3090008OBI3090008
„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen or
deteriorated hoses.
The coolant level should be filled
between F (Full) and L (Low) marked on
the side of the coolant reservoir when
the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water.
Bring the level to F (Full), but do
not overfill. If frequent additions are
required, we recommend that the
system be inspected by an authorized
HYUNDAI dealer.
ENGINE COOLANT

10-33
10
OBI3090009OBI3090009
„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
OBC3090006OBC3090006
„„Petrol Engine (Smartstream G1.2)Petrol Engine (Smartstream G1.2)
WARNING
Removing radiator cap
• Never attempt to remove the radiator
cap while the engine is operating or
hot. Doing so might lead to cooling
system and engine damage and could
result in serious personal injury from
escaping hot coolant or steam.• Turn the engine off and wait until it
cools down. Use extreme care when
removing the radiator cap. Wrap
a thick towel around it, and turn it
counterclockwise slowly to the first
stop. Step back while the pressure
is released from the cooling system.
When you are sure all the pressure
has been released, press down on the
cap, using a thick towel, and continue
turning counterclockwise to remove
it.
• Even if the engine is not operating,
do not remove the radiator cap
or the drain plug while the engine
and radiator are hot. Hot coolant
and steam may still blow out under
pressure, causing serious injury.
WARNING
The electric motor (cooling
fan) is controlled by engine
coolant temperature,
refrigerant pressure and
vehicle speed. It may
sometimes operate even when the
engine is not running. Use extreme
caution when working near the blades
of the cooling fan so that you are not
injured by a rotating fan blades. As the
engine coolant temperature decreases,
the electric motor will automatically
shut off. This is a normal condition.

10-34
Maintenance
Recommended engine coolant
• Use only soft (distilled) water in the
coolant mixture.
• The engine in your vehicle has
aluminum engine parts and must be
protected by an ethylene-glycol-based
coolant to prevent corrosion and
freezing.
• DO NOT USE alcohol or methanol
coolant or mix them with the specified
coolant.
• Do not use a solution that contains
more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.
For mixture percentage, refer to the
following table.
Ambient
TemperatureMixture Percentage
(volume)
Antifreeze Water
-15°C (5°F)35 65
-25°C (-13°F)40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40

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 causing
serious injury.
Changing the coolant
We recommend that the coolant be
replaced by an authorized HYUNDAI
dealer.
NOTICE
Put a thick cloth or fabric around the
radiator cap before refilling the coolant
in order to prevent the coolant from
overflowing into engine parts such as
the alternator.
WARNING
Coolant
• Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
• Radiator coolant can severely
obscure visibility when sprayed on
the windshield and may cause loss
of vehicle control or damage to paint
and body trim.

10-49
10
WARNING
Battery dangers
Always read the following
instructions carefully when
handling a battery.
Keep lighted cigarettes and
all other flames or sparks
away from the battery.
Hydrogen, a highly
combustible gas, is always
present in battery cells and
may explode if ignited.
Keep batteries out of the
reach of children because
batteries contain highly
corrosive SULFURIC ACID.
Do not allow battery acid to
contact your skin, eyes,
clothing or paint finish.
If any electrolyte gets into
your eyes, flush your eyes
with clean water for at least
15 minutes and get
immediate medical
attention. If electrolyte gets
on your skin, thoroughly
wash the contacted area. If
you feel a pain or a burning
sensation, get medical
attention immediately.
Wear eye protection when
charging or working near a
battery. Always provide
ventilation when working in
an enclosed space.
An inappropriately
disposed battery can be
harmful to the environment
and human health. Dispose
the battery according to
your local law(s) or
regulation.
The battery contains lead.
Do not dispose of it after
use. Please return the
battery to an authorized
HYUNDAI dealer to be
recycled.
• When lifting a plastic-cased battery,
excessive pressure on the case may
cause battery acid to leak, resulting
in personal injury. Lift with a battery
carrier or with your hands on
opposite corners.
• Never attempt to recharge the
battery when the battery cables are
connected.
• The electrical ignition system works
with high voltage. Never touch these
components with the engine running
or the ignition switched on.
Failure to follow the above warnings
can result in serious bodily injury or
death.

10-52
Maintenance
Tire care
For proper maintenance, safety, and
maximum fuel economy, you must
always maintain recommended tire
inflation pressures and stay within
the load limits and weight distribution
recommended for your vehicle.
Recommended cold tire
inflation pressures
All tire pressures (including the spare)
should be checked when the tires are
cold. “Cold Tires” means the vehicle has
not been driven for at least three hours
or driven less than 1.6 km (one mile).
Recommended pressures must be
maintained for the best ride, top vehicle
handling, and minimum tire wear.
For recommended inflation pressure,
refer to “Tire and wheels” in chapter 2.
OAI3019023OAI3019023
All specifications (sizes and pressures)
can be found on a label attached to the
driver’s side center pillar.
WARNING
Tire underinflation
Severe underinflation (70 kPa (10 psi) or
more) can lead to severe heat build-up,
causing blowouts, tread separation and
other tire failures that can result in the
loss of vehicle control leading to severe
injury or death. This risk is much higher
on hot days and when driving for long
periods at high speeds.
NOTICE
• Underinflation also results in
excessive wear, poor handling
and reduced fuel economy. Wheel
deformation also is possible. Keep
your tire pressures at the proper
levels. If a tire frequently needs
refilling, we recommend that the
system be checked by an authorized
HYUNDAI dealer.
• Overinflation produces a harsh ride,
excessive wear at the center of the
tire tread, and a greater possibility of
damage from road hazards.
NOTICE
• Warm tires normally exceed
recommended cold tire pressures
by 28 to 41 kPa (4 to 6 psi). Do not
release air from warm tires to adjust
the pressure or the tires will be
underinflated.
• Be sure to reinstall the tire inflation
valve caps. Without the valve cap,
dirt or moisture could get into the
valve core and cause air leakage. If a
valve cap is missing, install a new one
as soon as possible.
TIRES AND WHEELS

10-53
10
WARNING
Tire Inflation
Overinflation or underinflation can
reduce tire life, adversely affect
vehicle handling, and lead to sudden
tire failure. This could result in loss of
vehicle control and potential injury.
NOTICE
Tire pressure
Always observe the following:
• Check tire pressure when the tires
are cold. (After vehicle has been
parked for at least three hours or
hasn’t been driven more than 1.6 km
(one mile) since startup.)
• Check the pressure of your spare tire
each time you check the pressure of
other tires.
• Never overload your vehicle. Be
careful not to overload a vehicle
luggage rack if your vehicle is
equipped with one.
• Worn, old tires can cause accidents.
If your tread is badly worn, or if your
tires have been damaged, replace
them.
Checking tire inflation pressure
Check your tires once a month or more.
Also, check the tire pressure of the spare
tire.
How to check
Use a good quality gage to check
tire pressure. You can not tell if your
tires are properly inflated simply by
looking at them. Radial tires may look
properly inflated even when they’re
underinflated.
Check the tire’s inflation pressure when
the tires are cold. - “Cold” means your
vehicle has been sitting for at least three
hours or driven no more than 1.6 km (1
mile).
Remove the valve cap from the tire valve
stem. Press the tire gage firmly onto the
valve to get a pressure measurement. If
the cold tire inflation pressure matches
the recommended pressure on the tire
and loading information label, no further
adjustment is necessary. If the pressure
is low, add air until you reach the
recommended amount.
If you overfill the tire, release air by
pushing on the metal stem in the
center of the tire valve. Recheck the
tire pressure with the tire gage. Be
sure to put the valve caps back on the
valve stems. They help prevent leaks by
keeping out dirt and moisture.

10-54
Maintenance
WARNING
• Inspect your tires frequently for
proper inflation as well as wear and
damage. Always use a tire pressure
gauge.
• Tires with too much or too little
pressure wear unevenly causing poor
handling, loss of vehicle control,
and sudden tire failure leading to
accidents, injuries, and even death.
The recommended cold tire pressure
for your vehicle can be found in this
manual and on the tire label located
on the driver’s side center pillar.
• Worn tires can cause accidents.
Replace tires that are worn, show
uneven wear, or are damaged.
• Remember to check the pressure
of your spare tire. HYUNDAI
recommends that you check the
spare every time you check the
pressure of the other tires on your
vehicle.
Tire rotation
To equalize tread wear, it is
recommended that the tires be rotated
every 10,000 km (6,200 miles) or sooner
if irregular wear develops.
During rotation, check the tires for
correct balance.
When rotating tires, check for uneven
wear and damage. Abnormal wear
is usually caused by incorrect tire
pressure, improper wheel alignment,
out-of-balance wheels, severe braking
or severe cornering. Look for bumps
or bulges in the tread or side of tire.
Replace the tire if you find either of
these conditions. Replace the tire if
fabric or cord is visible. After rotation,
be sure to bring the front and rear tire
pressures to specification and check lug
nut tightness.
Refer to “Tire and wheels” in chapter 2.