HYUNDAI I20 2023 Owners Manual

9-32
Maintenance
NOTICE
AGM battery (if equipped)

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are maintenance-free and we
recommend that the AGM battery be
serviced by a HYUNDAI authorised
repairer. For charging your AGM
battery, use only fully automatic
battery chargers that are specially
developed for AGM batteries.

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we recommend that you use parts
for replacement from a HYUNDAI
authorised repairer.

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top of the battery. This may cause
leaks of internal electrolyte that
could result in severe injury.
By jump starting
After a jump start from a good battery,
drive the vehicle for at least 30 minutes
or operate at idle for at least 60 minutes
before it is shutoff. The vehicle may
not restart if you shut it off before the
battery had a chance to adequately
recharge. See “Jump Starting” in
chapter 8 for more details on jump
starting procedures.
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Reset items
Items should be reset after the battery
has been discharged or the battery has
been disconnected.

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(See chapter 5)

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(See chapter 5)

9-33
09
WARNING
Tyre failure may cause loss of vehicle
control resulting in an accident. To
reduce risk of SERIOUS INJURY or
DEATH, take the following precautions:

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inflation as well as wear and damage.

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for your vehicle can be found in this
manual and on the tyre label located
on the driver’s side centre pillar.
Always use a tyre pressure gauge to
measure tyre pressure. Tyres with
too much or too little pressure wear
unevenly causing poor handling.

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time you check the pressure of the
other tyres on your vehicle.

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uneven wear, or are damaged. Worn
tyres can cause loss of braking
effectiveness, steering control, or
traction.

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size as each tyre that was originally
supplied with this vehicle. Using
tyres and wheels other than the
recommended sizes could cause
unusual handling characteristics,
poor vehicle control, or negatively
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accident.
Tyre care
For proper maintenance, safety, and
maximum fuel economy, you must
always maintain recommended tyre
inflation pressures and stay within
the load limits and weight distribution
recommended for your vehicle.
OBC3010021
All specifications (sizes and pressures)
can be found on a label attached to the
left side centre pillar.
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9-34
Maintenance
Recommended cold tyre
inflation pressures
All tyre pressures (including the spare)
should be checked when the tyres are
cold. “Cold tyres” means the vehicle has
not been driven for at least three hours
or driven less than one mile (1.6 km).
Warm tyres normally exceed
recommended cold tyre pressures by 28
to 41 kPa (4 to 6 psi). Do not release air
from warm tyres to adjust the pressure
or the tyres will be under-inflated. For
recommended inflation pressure, refer
to “Tyre and Wheels” in chapter 2.
WARNING
Recommended pressures must be
maintained for the best ride, vehicle
handling, and minimum tyre wear.
Over-inflation or under-inflation can
reduce tyre life, adversely affect
vehicle handling, and lead to sudden
tyre failure that could result in loss of
vehicle control resulting in an accident.
Severe under-inflation can lead
to severe heat build-up, causing
blowouts, tread separation and other
tyre failures that can result in the
loss of vehicle control resulting in an
accident. This risk is much higher on
hot days and when driving for long
periods at high speeds.
NOTICE

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excessive wear, poor handling
and reduced fuel economy. Wheel
deformation also is possible. Keep
your tyre pressures at the proper
levels. If a tyre frequently needs
refilling, we recommend that the
system be checked by a HYUNDAI
authorised repairer.

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excessive wear at the centre of the
tyre tread, and a greater possibility of
damage from road hazards.
Check tyre inflation pressure
Check your tyres including the spare tyre
once a month or more.
How to check
Use a good quality tyre pressure gauge
to check tyre pressure. You cannot tell if
your tyres are properly inflated simply by
looking at them. Radial tyres may look
properly inflated even when they are
under-inflated.
Remove the valve cap from the tyre
valve stem. Press the tyre gauge
firmly onto the valve to get a pressure
measurement. If the cold tyre inflation
pressure matches the recommended
pressure on the tyre and loading
information label, no further adjustment
is necessary. If the pressure is low, add
air until you reach the recommended
pressure. Make sure to put the valve
caps back on the valve stems. 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.

9-35
09
If you overfill the tyre, release air by
pushing on the metal stem in the centre
of the tyre valve. Recheck the tyre
pressure with the tyre gauge. Be sure
to put the valve caps back on the valve
stems. 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.
Tyre rotation
To equalize tread wear, HYUNDAI
recommends that the tyres be rotated
every 10,000 miles (15,000 km) or
sooner if irregular wear develops.
During rotation, check the tyres for
correct balance.
When rotating tyres, check for uneven
wear and damage. Abnormal wear
is usually caused by incorrect tyre
pressure, improper wheel alignment,
out-of-balance wheels, severe braking
or severe cornering. Look for bumps or
bulges in the tread or side of the tyre.
Replace the tyre if you find any of these
conditions. Replace the tyre if fabric or
cord is visible. After rotation, be sure to
bring the front and rear tyre pressures to
specification and check lug nut tightness
(proper torque is 11~13kgf.m (79~94 lbf.
ft, 107~127N.m).
CBGQ0706
„With a full-size spare tyre (if equipped)
„Without a spare tyre
CBGQ0707
„Directional tyres (if equipped)
CBGQ0707A
Disc brake pads should be inspected for
wear whenever tyres are rotated.

9-36
Maintenance
i Information
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9-37
09
WARNING
To reduce the risk of DEATH or SERIOUS
INJURY:

[Replace tyres that are worn, show
uneven wear, or are damaged. Worn
tyres can cause loss of braking
effectiveness, steering control, and
traction.

[Always replace tyres with the same
size as each tyre that was originally
supplied with this vehicle. Using
tyres and wheels other than the
recommended sizes could cause
unusual handling characteristics,
poor vehicle control, or negatively
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accident.

[When replacing tyres (or wheels), it
is recommended to replace the two
front or two rear tyres (or wheels)
as a pair. Replacing just one tyre
can seriously affect your vehicle’s
handling.

[Tyres degrade over time, even when
they are not being used. Regardless
of the remaining tread, HYUNDAI
recommends that tyres be replaced
after six (6) years of normal service.

[Heat caused by hot climates or
frequent high loading conditions can
accelerate the aging process. Failure
to follow this warning may cause
sudden tyre failure, which could lead
to a loss of vehicle control resulting
in an accident.
Compact spare tyre replacement
(if equipped)
A compact spare tyre has a shorter
tread life than a regular size tyre.
Replace it when you can see the
tread wear indicator bars on the tyre.
The replacement compact spare tyre
should be the same size and design
tyre as the one provided with your new
vehicle and should be mounted on the
same compact spare tyre wheel. The
compact spare tyre is not designed to
be mounted on a regular size wheel,
and the compact spare tyre wheel is not
designed for mounting a regular size
tyre.
WARNING
The original tyre should be repaired or
replaced as soon as possible to avoid
failure of the spare and loss of vehicle
control resulting in an accident. The
compact spare tyre is for emergency
use only. Do not operate your vehicle
over 50 mph (80 km/h) when using the
compact spare tyre.

9-38
Maintenance
Wheel replacement
When replacing the metal wheels for any
reason, make sure the new wheels are
equivalent to the original factory units in
diameter, rim width and offset.
Tyre traction
Tyre traction can be reduced if you drive
on worn tyres, tyres that are improperly
inflated or on slippery road surfaces.
Tyres should be replaced when tread
wear indicators appear. To reduce the
possibility of losing control, slow down
whenever there is rain, snow or ice on
the road.
Tyre maintenance
In addition to proper inflation, correct
wheel alignment helps to decrease tyre
wear. If you find a tyre is worn unevenly,
have your dealer check the wheel
alignment.
When you have new tyres installed,
make sure they are balanced. This will
increase vehicle ride comfort and tyre
life. Additionally, a tyre should always
be rebalanced if it is removed from the
wheel.
Tyre sidewall labelling
This information identifies and describes
the fundamental characteristics of
the tyre and also provides the tyre
identification number (TIN) for safety
standard certification. The TIN can be
used to identify the tyre in case of a
recall.
OLMB073028
2
1
7
5,6
3
4
1
1. Manufacturer or brand name
Manufacturer or brand name is shown.
2. Tyre size designation
A tyre’s sidewall is marked with a tyre
size designation. You will need this
information when selecting replacement
tyres for your car. The following explains
what the letters and numbers in the tyre
size designation mean.
Example tyre size designation:
(These numbers are provided as an
example only; your tyre size designator
could vary depending on your vehicle.)
185/65R15 88 H
185 - Tyre width in millimeters.
65 - Aspect ratio. The tyre’s section
height as a percentage of its width.
R - Tyre construction code (Radial).
15 - Rim diameter in inches.
88 - Load Index, a numerical code
associated with the maximum load
the tyre can carry.
H - Speed Rating Symbol. See the
speed rating chart in this section for
additional information.

9-39
09
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Wheels are also marked with important
information that you need if you ever
have to replace one. The following
explains what the letters and numbers in
the wheel size designation mean.
Example wheel size designation:
6.0J X 15
6.0 - Rim width in inches.
J - Rim contour designation.
15 - Rim diameter in inches.
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The chart below lists many of the
different speed ratings currently being
used for passenger vehicle tyres. The
speed rating is part of the tyre size
designation on the sidewall of the tyre.
This symbol corresponds to that tyre’s
designed maximum safe operating
speed.
Speed Rating
SymbolMaximum Speed
S112 mph (180 km/h)
T118 mph (190 km/h)
H 130 mph (210 km/h)
V 149 mph (240 km/h)
W 168 mph (270 km/h)
Y 186 mph (300 km/h)

3. Checking tyre life (TIN : Tyre
Identification Number)
Any tyres that are over six years old,
based on the manufacturing date,
(including the spare tyre) should be
replaced by new ones. You can find
the manufacturing date on the tyre
sidewall (possibly on the inside of
the wheel), displaying the DOT Code.
The DOT Code is a series of numbers
on a tyre consisting of numbers and
English letters. The manufacturing date
is designated by the last four digits
(characters) of the DOT code.
DOT : XXXX XXXX OOOO
The front part of the DOT shows a plant
code number, tyre size and tread pattern
and the last four numbers indicate week
and year manufactured.
For example:
DOT XXXX XXXX 1521 represents that the
tyre was produced in the 15th week of
2021.
4. Tyre ply composition and
material
The number of layers or plies of
rubber-coated fabric in the tyre. Tyre
manufacturers also must indicate the
materials in the tyre, 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.

9-40
Maintenance
5. Maximum permissible inflation
pressure
This number is the greatest amount
of air pressure that should be put in
the tyre. Do not exceed the maximum
permissible inflation pressure. Refer to
the Tyre 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 tyre. When replacing
the tyres on the vehicle, always use a
tyre that has the same load rating as the
factory installed tyre.
7. Uniform tyre quality grading
Quality grades can be found where
applicable on the tyre sidewall between
tread shoulder and maximum section
width.
For example:
TREADWEAR 200
TRACTION AA
TEMPERATURE A
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The tread wear grade is a comparative
rating based on the wear rate of the tyre
when tested under controlled conditions
on a specified government test course.
For example, a tyre graded 150 would
wear one-and-a-half times (1½) as well
on the government course as a tyre
graded 100. The relative performance of tyres
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
sidewalls of passenger vehicle tyres. The
tyres available as standard or optional
equipment on your vehicle may vary
with respect to grade.
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The traction grades, from highest to
lowest, are AA, A, B and C. Those grades
represent the tyre’s ability to stop on wet
pavement as measured under controlled
conditions on specified government
test surfaces of asphalt and concrete. A
tyre marked C may have poor traction
performance.
WARNING
The traction grade assigned to this tyre
is based on straight-ahead braking
traction tests, and does not include
acceleration, cornering, hydroplaning,
or peak traction characteristics.

9-41
09
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The temperature grades are A (the
highest), B and C representing the tyre’s
resistance to the generation of heat
and its ability to dissipate heat when
tested under controlled conditions on a
specified indoor laboratory test wheel.
Sustained high temperature can cause
the material of the tyre to degenerate
and reduce tyre life, and excessive
temperature can lead to sudden tyre
failure. Grades B and A represent higher
levels of performance on the laboratory
test wheel than the minimum required
by law.
WARNING
The temperature grade for this tyre is
established for a tyre that is properly
inflated and not overloaded. Excessive
speed, under-inflation, over-inflation,
or excessive loading, either separately
or in combination, can cause heat
build-up and possible sudden tyre
failure. This may cause loss of vehicle
control resulting in an accident.
Low aspect ratio tyres
Low aspect ratio tyres, the aspect ratio
is lower than 50, are provided for sporty
looks.
Because low aspect ratio tyres are
optimized for handling and braking, their
sidewall is a little stiffer than a standard
tyre. Also, low aspect ratio tyres tend to
be wider so that they consequently have
a greater contact patch with the road
surface. In some instances, they may
generate more road noise compared
with standard tyres.
CAUTION
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ratio tyre is shorter than a standard
tyre, the rim of the wheel and the
tyre itself are more easily more easily
susceptible to damage. Use caution
when driving and follow the guidelines
below to help minimise damage to the
wheel and tyre:

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driving off a road, be careful not to
damage the tyres and wheels. After
driving, inspect the tyres and wheels.

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bump, manhole, or kerb stone,
drive the vehicle slowly so as not to
damage the tyres and wheels.

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impact, we recommend you have
the tyre and wheel inspected by a
HYUNDAI authorised repairer.

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pressure every 3,000 km (1,800 miles)
to prevent tyre damage.

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if there is the slightest hint of tyre
damage, have the tyre checked or
replaced because the tyre damage
may cause air leakage from the tyre.

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on a rough road, off road, pothole,
manhole, or kerb stone, it will not be
covered by the warranty.