maintenance HYUNDAI I20 2022 Workshop Manual

10-48
Maintenance
For best battery service
OBI3090013OBI3090013
• Keep the battery securely mounted.
• Keep the battery top clean and dry.
• Keep the terminals and connections
clean, tight, and coated with
petroleum jelly or terminal grease.
• Rinse any spilled electrolyte from the
battery immediately with a solution of
water and baking soda.
• If the vehicle is not going to be used
for an extended time, disconnect the
negative terminal cable of the battery
to prevent discharge.
i Information - For batteries
marked with UPPER and
LOWER
OHYK077011OHYK077011
If your vehicle is equipped with a battery
marked with LOWER (MIN) and UPPER
(MAX) on the side, you should check the
electrolyte level.
The electrolyte level should be between
LOWER (MIN) and UPPER (MAX).
Be careful not to spill distilled (or
de-mineralized) water over the battery
surface or other adjacent components.
Also, do not overfill the battery cells.
If not, it may corrode the battery or other
components. Finally, securely close the
cell cap. However, we recommend you to
contact an authorized HYUNDAI dealer
for better battery service.
NOTICE
If the Electrolyte level is Low, add
distilled (or demineralized) water.
Never add sulfuric acid or other
electrolyte.
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10-50
Maintenance
NOTICE
If you connect unauthorized electronic
devices to the battery, the battery may
be discharged. Never use unauthorized
devices.
Battery capacity label
OQXI079062OQXI079062
„„ Example Example
 The actual battery label in the vehicle
may differ from the illustration.
1. CMF45L-DIN : The HYUNDAI model
name of battery
2. 12V : The nominal voltage
3. 45Ah(20HR) : The nominal capacity (in
Ampere hours)
4. RC 80min : The nominal reserve
capacity (in min.)
5. CCA410 : The cold-test current in
amperes by SAE
6. 410A : The cold-test current in
amperes by EN
Battery recharging
Your vehicle has a maintenance-free,
calcium-based battery.
• If the battery becomes discharged in a
short time (because, for example, the
headlights or interior lights were left
on while the vehicle was not in use),
recharge it by slow charging (trickle)
for 10 hours.
• If the battery gradually discharges
because of high electric load while the
vehicle is being used, recharge it at
20-30A for two hours.
WARNING
Recharging battery
When recharging the battery, observe
the following precautions:
• The battery must be removed from
the vehicle and placed in an area with
good ventilation.
• Do not allow cigarettes, sparks, or
flame near the battery.
• Watch the battery during charging,
and stop or reduce the charging
rate if the battery cells begin
gassing (boiling) violently or if the
temperature of the electrolyte of any
cell exceeds 49°C (120°F).
• Wear eye protection when checking
the battery during charging.
• Disconnect the battery charger in the
following order.
1. Turn off the battery charger main
switch.
2. Unhook the negative clamp from the
negative battery terminal.
3. Unhook the positive clamp from the
positive battery terminal.

10-51
10
WARNING
• Before performing maintenance or
recharging the battery, turn off all
accessories and stop the engine.
• The negative battery cable must be
removed first and installed last when
the battery is disconnected.
Reset items
Items should be reset after the battery
has been discharged or the battery has
been disconnected.
• Auto up/down window
(See chapter 5)
• Climate control system
(See chapter 5)
• Audio (See chapter 5)
Battery replacement
Replacing a Battery required
precautionary measures.
We recommend that you consult an
authorized HYUNDAI dealer.

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

10-54
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.

10-56
Maintenance
Tire replacement
OEN076053OEN076053
Tread wear indicatorTread wear indicator
If the tire is worn evenly, a tread wear
indicator will appear as a solid band
across the tread. This shows there is
less than 1.6 mm (1/16 inch) of tread left
on the tire. Replace the tire when this
happens.
Do not wait for the band to appear
across the entire tread before replacing
the tire.
NOTICE
When replacing the tires, recheck and
tighten the wheel nuts after driving
about 1,000 km (620 miles). If the
steering wheel shakes or the vehicle
vibrates while driving, the tire is out of
balance. Align the tire balance. If the
problem is not solved, we recommend
that you contact an authorized
HYUNDAI dealer.
WARNING
Replacing tires
To reduce the chance or serious or fatal
injuries from an accident caused by tire
failure or loss of vehicle control:
• Replace tires that are worn, show
uneven wear, or are damaged.
Worn tires can cause loss of braking
effectiveness, steering control, and
traction.
• Do not drive your vehicle with too
little or too much pressure in your
tires. This can lead to uneven wear
and tire failure.
• When replacing tires, never mix
radial and bias-ply tires on the
same car. You must replace all tires
(including the spare) if moving from
radial to bias-ply tires.
• It is best to replace all four tires at the
same time. If that is not possible, or
necessary, then replace the two front
or two rear tires as a pair. Replacing
just one tire can seriously affect your
vehicle’s handling.
• Using tires and wheel other than the
recommended sizes could cause
unusual handling characteristics and
poor vehicle control, resulting in a
serious accident.
• Wheels that do not meet HYUNDAI’s
specifications may fit poorly and
result in damage to the vehicle or
unusual handling and poor vehicle
control.
• The works by comparing the speed of
the wheels. Tire size can affect wheel
speed. When replacing tires, all 4
tires must use the same size originally
supplied with the vehicle. Using tires
of a different size can cause the ABS
(Anti-lock Brake System) and ESC
(Electronic Stability Control) to work
irregularly. (if equipped)

10-58
Maintenance
Tire maintenance
In addition to proper inflation, correct
wheel alignment helps decrease tire
wear. If you find a tire worn unevenly,
have your dealer check the wheel
alignment.
When you have new tires installed,
make sure they are balanced. This will
increase vehicle ride comfort and tire
life. Additionally, a tire should always
be rebalanced if it is removed from the
wheel.
Tire sidewall labeling
I030B04JMI030B04JM
22
11
77
5,65,6
33
44
11
This information identifies and describes
the fundamental characteristics of
the tire and also provides the tire
identification number (TIN) for safety
standard certification. The TIN can be
used to identify the tire in case of a
recall.
1. Manufacturer or brand name
Manufacturer or Brand name is shown.
2. Tire size designation
A tire’s sidewall is marked with a tire
size designation. You will need this
information when selecting replacement
tires for your car. The following explains
what the letters and numbers in the tire
size designation mean.
Example tire size designation:
(These numbers are provided as an
example only; your tire size designator
could vary depending on your vehicle.)
185/65R15 88 H
185 - Tire width in millimeters.
65 - Aspect ratio. The tire’s section
height as a percentage of its width.
R - Tire construction code (Radial).
15 - Rim diameter in inches.
88 - Load Index, a numerical code
associated with the maximum load
the tire can carry.
H - Speed Rating Symbol. See the
speed rating chart in this section for
additional information.

10-60
Maintenance
4. Tire ply composition and material
The number of layers or plies of
rubber-coated fabric in the tire. Tire
manufacturers also must indicate the
materials in the tire, which include steel,
nylon, polyester, and others. The letter
“R” means radial ply construction; the
letter “D” means diagonal or bias ply
construction; and the letter “B” means
belted-bias ply construction.
5. Maximum permissible inflation
pressure
This number is the greatest amount
of air pressure that should be put in
the tire. Do not exceed the maximum
permissible inflation pressure. Refer to
the Tire and Loading Information label
for recommended inflation pressure.
6. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that can
be carried by the tire. When replacing
the tires on the vehicle, always use a
tire that has the same load rating as the
factory installed tire.
7. Uniform tire quality grading
Quality grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum chapter
width.
For example:
TREAD wear 200
TRACTION AA
TEMPERATURE A
Tread wear
The tread wear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course.
For example, a tire graded 150 would
wear one-and-a-half times (1½) as well
on the government course as a tire
graded 100.
The relative performance of tires
depends upon the actual conditions
of their use, however, and may depart
significantly from the norm due to
variations in driving habits, service
practices and differences in road
characteristics and climate.
These grades are molded on the side-
walls of passenger vehicle tires. The
tires available as standard or optional
equipment on your vehicle may vary
with respect to grade.

10-62
Maintenance
NOTICE
Because the sidewall of the low aspect
ratio tire is shorter than the normal, the
wheel and tire of the low aspect ratio
tire is easier to be damaged. So, follow
the instructions below.
- When driving on a rough road or
off road, drive cautiously because
tires and wheels may be damaged.
And after driving, inspect tires and
wheels.
- When passing over a pothole, speed
bump, manhole, or curb stone, drive
slowly so that the tires and wheels
are not damaged.
- If the tire is impacted, we
recommend that you inspect the tire
condition or contact an authorized
HYUNDAI dealer.
- To prevent damage to the tire,
inspect the tire condition and
pressure every 3,000km.
NOTICE
• It is not easy to recognize the tire
damage with your own eyes. But
if there is the slightest hint of tire
damage, even though you cannot see
the tire damage with your own eyes,
have the tire checked or replaced
because the tire damage may cause
air leakage from the tire.
• If the tire is damaged by driving
on a rough road, off road, pothole,
manhole, or curb stone, it will not be
covered by the warranty.
• You can find out the tire information
on the tire sidewall.

10-64
Maintenance
Instrument panel fuse
replacement
OBI3090014OBI3090014
1. Turn the vehicle off.
2. Turn all other switches OFF.
3. Open the fuse panel cover.
4. Refer to the label on the inside of
the fuse panel cover to locate the
suspected fuse location.
OBI3090016OBI3090016
5. Pull the suspected fuse straight out.
Use the removal tool provided in the
engine compartment fuses panel.
6. Check the removed fuse; replace it if
it is blown. Spare fuses are provided in
the instrument panel fuse panels (or in
the engine compartment fuse panel).
7. Push in a new fuse of the same rating,
and make sure it fits tightly in the
clips.If it fits loosely, we recommend
that you consult an authorized
HYUNDAI dealer.
In an emergency, if you do not have
a spare fuse, use a fuse of the same
rating from a circuit you may not need
for operating the vehicle, such as the
cigarette lighter fuse.
If the headlights or other electrical
components do not work and the fuses
are undamaged, check the fuse panel
in the engine compartment. If a fuse
is blown, it must be replaced with the
same rating.