2021 HYUNDAI I20 wiring

4-38
Safety system
WARNING
• Even in vehicles with air bags, you
and your passengers must always
wear the safety belts provided
in order to minimize the risk and
severity of injury in the event of a
collision or rollover.
• SRS and pretensioners contain
explosive chemicals.
If scraping a vehicle without
removing SRS and pretensioners
from a vehicle, it may cause fire.
Before scraping a vehicle, we
recommend that you contact an
authorized Hyundai dealer.
• Keep the SRS parts and wirings away
from water or any liquid. If the SRS
components are inoperative due to
exposure to water or liquids, it may
cause fire or severe injury.
How does the air bag system
operate
• Air bags are activated (able to inflate
if necessary) only when the ignition
switch is placed to the ON or START
position.
• Air bags inflate instantly in the event
of serious frontal or side collision in
order to help protect the occupants
from serious physical injury.
• There is no single speed at which the
air bags will inflate.
Generally, air bags are designed to
inflate based upon the severity of a
collision and its direction. These two
factors determine whether the sensors
produce an electronic deployment/
inflation signal.
• Air bag deployment depends on a
number of factors including vehicle
speed, angles of impact and the
density and stiffness of the vehicles or
objects which your vehicle hits in the
collision. The determining, factors are
not limited to those mentioned above.
• The front air bags will completely
inflate and deflate in an instant.
It is virtually impossible for you to see
the air bags inflate during an accident.
It is much more likely that you
will simply see the deflated air
bags hanging out of their storage
compartments after the collision.

4-46
Safety system
• Never lean against the door or center
console – always sit in an upright
position.
• No objects (such as crash pad cover,
cellular phone holder, cup holder,
perfume or stickers) should be placed
over or near the air bag modules
on the steering wheel, instrument
panel, windshield glass, and the front
passenger’s panel above the glove
box. Such objects could cause harm
if the vehicle is in a crash severe
enough to cause the air bags to
deploy.
• Do not attach any objects on the
front windshield and inside mirror.
• Do not tamper with or disconnect
SRS wiring or other components
of the SRS system. Doing so could
result in injury, due to accidental
deployment of the air bags or by
rendering the SRS inoperative.
• If the SRS air bag warning light
remains illuminated while the vehicle
is being driven, we recommend
that the system be inspected by an
authorized HYUNDAI dealer.
• Air bags can only be used once –
we recommend that the system be
replaced by an authorized HYUNDAI
dealer.
• The SRS is designed to deploy the
front air bags only when an impact is
sufficiently severe. Additionally, the
air bags will only deploy once. Seat
belts must be worn at all times.
• Front air bags are not intended to
deploy in side-impact, rear-impact or
rollover crashes. In addition, front air
bags will not deploy in frontal crashes
below the deployment threshold.• A child restraint system must never
be placed in the front seat. The infant
or child could be severely injured or
killed by an air bag deployment in
case of an accident.
• Children age 12 and under must
always be properly restrained in the
rear seat. Never allow children to
ride in the front passenger seat. If a
child over 12 must be seated in the
front seat, he or she must be properly
belted and the seat should be moved
as far back as possible.
• For maximum safety protection in
all types of crashes, all occupants
including the driver should always
wear their seat belts whether or not
an air bag is also provided at their
seating position to minimize the
risk of severe injury or death in the
event of a crash. Do not sit or lean
unnecessarily close to the air bag
while the vehicle is in motion.
• Sitting improperly or out of position
can result in serious or fatal injury
in a crash. All occupants should sit
upright with the seat back in an
upright position, centered on the seat
cushion with their seat belt on, legs
comfortably extended and their feet
on the floor until the vehicle is parked
and the ignition key is removed.
• The SRS air bag system must deploy
very rapidly to provide protection
in a crash. If an occupant is out of
position because of not wearing a
seat belt, the air bag may forcefully
contact the occupant causing serious
or fatal injuries.

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Safety system
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• Air bags may not inflate if the vehicle
collides with objects such as utility
poles or trees, where the point of
impact is concentrated and the
collision energy is absorbed by the
vehicle structure.
SRS Care
The SRS is virtually maintenance-
free and so there are no parts you
can safely service by yourself. If the
SRS air bag warning light does not
illuminate, or continuously remains
on, we recommend that the system be
inspected by an authorized HYUNDAI
dealer.
We recommend that the any work on
the SRS system, such as removing,
installing, repairing, or any work on the
steering wheel, the front passenger’s
panel, front seats and roof rails be
performed by an authorized HYUNDAI
dealer. Improper handling of the SRS
system may result in serious personal
injury.
WARNING
• Modification to SRS components
or wiring, including the addition
of any kind of badges to the pad
covers or modifications to the body
structure, can adversely affect SRS
performance and lead to possible
injury.
• For cleaning the air bag pad covers,
use only a soft, dry cloth or one which
has been moistened with plain water.
Solvents or cleaners could adversely
affect the air bag covers and proper
deployment of the system.

4-55
04
• No objects should be placed over
or near the air bag modules on the
steering wheel, instrument panel,
and the front passenger’s panel
above the glove box, because any
such object could cause harm if the
vehicle is in a crash severe enough to
cause the air bags to inflate.
• If the air bags inflate, we recommend
that the system be replaced by an
authorized HYUNDAI dealer.
• Do not tamper with or disconnect
SRS wiring, or other components of
the SRS system. Doing so could result
in injury, due to accidental inflation
of the air bags or by rendering the
SRS inoperative.
• If components of the air bag system
must be discarded, or if the vehicle
must be scrapped, certain safety
precautions must be observed. An
authorized HYUNDAI dealer knows
these precautions and can give you
the necessary information. Failure
to follow these precautions and
procedures could increase the risk of
personal injury.
• If your car was flooded and has
soaked carpeting or water on the
flooring, you shouldn’t try to start
the engine; we recommend that
you contact an authorized HYUNDAI
dealer.Additional safety precautions
• Never let passengers ride in the cargo
area or on top of a folded-down back
seat. All occupants should sit upright,
fully back in their seats with their seat
belts on and their feet on the floor.
• Passengers should not move out of
or change seats while the vehicle
is moving. A passenger who is not
wearing a seat belt during a crash
or emergency stop can be thrown
against the inside of the vehicle,
against other occupants, or out of the
vehicle.
• Each seat belt is designed to restrain
one occupant. If more than one
person uses the same seat belt, they
could be seriously injured or killed in a
collision.
• Do not use any accessories on seat
belts. Devices claiming to improve
occupant comfort or reposition the
seat belt can reduce the protection
provided by the seat belt and increase
the chance of serious injury in a crash.
• Passengers should not place hard or
sharp objects between themselves
and the air bags. Carrying hard or
sharp objects on your lap or in your
mouth can result in injuries if an air
bag inflates.
• Keep occupants away from the air
bag covers. All occupants should sit
upright, fully back in their seats with
their seat belts on and their feet on the
floor. If occupants are too close to the
air bag covers, they could be injured if
the air bags inflate.

4-56
Safety system
• Do not attach or place objects on or
near the air bag covers. Any object
attached to or placed on the front air
bag covers could interfere with the
proper operation of the air bags.
• Do not modify the front seats.
Modification of the front seats could
interfere with the operation of the
supplemental restraint system sensing
components air bags.
• Do not place items under the
front seats. Placing items under
the front seats could interfere with
the operation of the supplemental
restraint system sensing components
and wiring harnesses.
• Never hold an infant or child on
your lap. The infant or child could be
seriously injured or killed in the event
of a crash. All infants and children
should be properly restrained in
appropriate child safety seats or seat
belts in the rear seat.
WARNING
• Sitting improperly or out of position
can cause occupants to be shifted
too close to a deploying air bag,
strike the interior structure or be
thrown from the vehicle resulting in
serious injury or death.
• Always sit upright with the seatback
in an upright position, centered on
the seat cushion with your seat belt
on, legs comfortably extended and
your feet on the floor.
Adding equipment to or modifying
your air bag-equipped vehicle
If you modify your vehicle by changing
your vehicle’s frame, bumper system,
front end or side sheet metal or ride
height, this may affect the operation of
your vehicle’s air bag system.

7-53
07
Winter precautions
Use high quality ethylene glycol
coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because it
helps prevent corrosion in the cooling
system, lubricates the water pump and
prevents freezing. Be sure to replace or
replenish your coolant in accordance
with the maintenance schedule in
chapter 8. Before winter, have your
coolant tested to assure that its freezing
point is sufficient for the temperatures
anticipated during the winter.
Check battery and cables
Winter puts additional burdens on the
battery system. Visually inspect the
battery and cables as described in
chapter 8. The level of charge in your
battery can be checked by an authorized
HYUNDAI dealer or a service station.
Change to “winter weight” oil if
necessary
In some climates it is recommended that
a lower viscosity “winter weight” oil be
used during cold weather. See chapter
2 for recommendations. If you aren’t
sure what weight oil you should use, we
recommend that you consult with an
authorized HYUNDAI dealer.
Check spark plugs and ignition
system
Inspect your spark plugs as described
in chapter 8 and replace them if
necessary. Also check all ignition wiring
and components to be sure they are not
cracked, worn or damaged in any way.
To keep locks from freezing
To keep the locks from freezing, squirt
an approved de-icer fluid or glycerine
into the key opening. If a lock is covered
with ice, squirt it with an approved
de-icing fluid to remove the ice. If the
lock is frozen internally, you may be able
to thaw it out by using a heated key.
Handle the heated key with care to avoid
injury.
Use approved window washer anti-
freeze in system
To keep the water in the window washer
system from freezing, add an approved
window washer anti-freeze solution in
accordance with instructions on the
container. Window washer anti-freeze is
available from an authorized HYUNDAI
dealer and most auto parts outlets. Do
not use engine coolant or other types
of anti-freeze as these may damage the
paint finish.

10-7
10
WARNING
Do not leave gloves, rags or any other
combustible material in the engine
compartment. Doing so may cause a
heat-induced fire.
NOTICE
• Do not put heavy objects or apply
excessive force on top of the engine
cover (if equipped) or fuel related
parts.
• When you inspect the fuel system
(fuel lines and fuel injection devices),
we recommend that you contact an
authorized HYUNDAI dealer.
• Do not drive long time with the
engine cover (if equipped) removed.
• When checking the engine room, do
not go near fire. Fuel, washer fluid,
etc. are flammable oils that may
cause fire.
• Before touching the battery, ignition
cables and electrical wiring, you
should disconnect the battery “-”
terminal. You may get an electric
shock from the electric current.
• When you remove the interior trim
cover with a flat head (-) driver, be
careful not to damage the cover.
• Be careful when you replace and
clean bulbs to avoid burns or
electrical shock.

10-8
Maintenance
The following lists are vehicle checks
and inspections that should be
performed at the frequencies indicated
to help ensure safe, dependable
operation of your vehicle.
Any adverse conditions should be
brought to the attention of your dealer
as soon as possible.
These Owner Maintenance Checks are
generally not covered by warranties and
you may be charged for labor, parts and
lubricants used.
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.
Owner maintenance schedule
When you stop for fuel:
• Check the engine oil level.
• Check the coolant level in coolant
reservoir.
• Check the windshield washer fluid
level.
• Look for low or under-inflated tires.
• Check the radiator and condenser.
Check if the front of the radiator and
condenser are clean and not blocked
with leaves, dirt or insects etc.
If any of the above parts are extremely
dirty or you are not sure of their
condition, we recommend that you
contact an authorized HYUNDAI
dealer.
WARNING
Be careful when checking your engine
coolant level when the engine is hot.
Scalding hot coolant and steam may
blow out under pressure. This could
cause burns or other serious injury.
OWNER MAINTENANCE