fuel HYUNDAI I20 2020 Workshop Manual

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

10-67
10
Fuse NameSymbolFuse
ratingCircuit Protected
HEATED
MIRROR10A RR HEATED MIRROR, ECU
SAFETY
P/WINDOW
25A SAFETY ECU
P/WINDOW
RH
25A POWER WINDOW MOTOR
TCU2
10ADCT/ECLUTCH/TCU, S_MODE_SW/ATM_LEVER,
INHIBITOR SW
MODULE 8
10A MUT/VDMS/MOOD_LAMP_UNIT
MEMORY
10A CLUSTER, FATC, MTC
AMP
25A EXT. AMP
SUNROOF
15A SUNROOF MOTOR
P/WINDOW
LH
25A POWER WINDOW MOTOR
SENSOR7
10A FUEL_WATER_SNSR, GLOW_RLY_UNIT
MODULE 2
10A O/S MIRR SW, AMP, IBU,AUDIO
MULTIMEDIA
20A AUDIO
AIR BAG
10A ACU
POWER
OUTLET
15A POWER OUTLET
Inner Compartment Fuse Panel (ICU)

10-71
10
Engine Compartment Fuse Panel (1.0 T-GDi)
Fuse Name SymbolFuse
RatingCircuit Protected
ALT150A Alternator, Multi Fuse - F3, Fuse - F32/F33/F34/F35
MDPS
80A MDPS Unit
DCT1
40A TCU
E-CLUTCH1
40A Electronic Clutch Module
DCT2
40A TCU
ECU1
30A E/R Junction Block (RLY.1)
IG1
30A[With Smart Key] PDM Relay Box (IG1, ACC Relay)
[W/O Smart Key] Ignition Switch
FUEL PUMP
20A E/R Junction Block (RLY.6)
ECU3
15A ECU
ECU2
15A ECU
A/CON 1
10A E/R Junction Block (RLY.3)
DCT4
40A Smart Gear Actuator
BATT4
40AICU Junction Block
(Power Window Relay, Fuse - F3/F10/F11)
BATT1
50A ICU Junction Block (IPS1, IPS3, IPS5, IPS7, IPS8, IPS11)
BATT3
40AICU Junction Block (Fuse - F8/F21/F25/F29,
Long Term Load Latch Relay)
DCT3
15A TCU
E-CLUTCH2
15A Electronic Clutch Module
HORN
15A E/R Junction Block (RLY.11, RLY.12)

10-73
10
Engine Compartment Fuse Panel (Smartstream G1.2)
Fuse Name SymbolFuse
RatingCircuit Protected
ALT125A Alternator, Multi Fuse - F3, Fuse - F32/F33/F34/F35
MDPS
80A MDPS Unit
ECU1
30A E/R Junction Block (RLY.1)
IG1
30A[With Smart Key] PDM Relay Box (IG1, ACC Relay)
[W/O Smart Key] Ignition Switch
FUEL PUMP
20A E/R Junction Block (RLY.6)
ECU3
15A ECU/PCU
ECU2
15A ECU/PCU
A/CON 1
10A E/R Junction Block (RLY.3)
BATT4
40AICU Junction Block
(Power Window Relay, Fuse - F3/F10/F11)
BATT1
50A ICU Junction Block (IPS1, IPS3, IPS5, IPS7, IPS8, IPS11)
BATT3
40AICU Junction Block (Fuse - F8/F21/F25/F29,
Long Term Load Latch Relay)
HORN
15A E/R Junction Block (RLY.11, RLY.12)
BATT2
50A ICU Junction Block (IPS2, IPS4, IPS6, IPS9, IPS10)
IG2
40AE/R Junction Block (RLY.9).
[With Smart Key] PDM Relay Box (IG2 Relay)
[W/O Smart Key] Ignition Switch
C/FAN
40A E/R Junction Block (RLY.2)
IGN COIL
20A Ignition Coil #1/#2/#3/#4

10-75
10
Engine Compartment Fuse Panel (1.5 WGT)
Fuse Name SymbolFuse
RatingCircuit Protected
GLOW100A Glow Relay Unit
ALT
180A Alternator, Multi Fuse - F3, Fuse - F32/F33/F34/F35
MDPS
80A MDPS Unit
ECU1
30A E/R Junction Block (RLY.1)
IG1
30A[With Smart Key] PDM Relay Box (IG1, ACC Relay)
[W/O Smart Key] Ignition Switch
FUEL PUMP
20A E/R Junction Block (RLY.6)
ECU2
15A ECU
A/CON 1
10A E/R Junction Block (RLY.3)
FUEL HEATER
30A E/R Junction Block (RLY.14)
BATT4
40AICU Junction Block
(Power Window Relay, Fuse - F3/F10/F11)
BATT1
50A ICU Junction Block (IPS1, IPS3, IPS5, IPS7, IPS8, IPS11)
BATT3
40AICU Junction Block (Fuse - F8/F21/F25/F29,
Long Term Load Latch Relay)
HORN
15A E/R Junction Block (RLY.11, RLY.12)
AMS
10A Battery Sensor
BATT2
50A ICU Junction Block (IPS2, IPS4, IPS6, IPS9, IPS10)
IG2
40AE/R Junction Block (RLY.9).
[With Smart Key] PDM Relay Box (IG2 Relay)
[W/O Smart Key] Ignition Switch

10-92
Maintenance
Bright-metal maintenance
• To remove road tar and insects, use
a tar remover, not a scraper or other
sharp object.
• To protect the surfaces of bright-metal
parts from corrosion, apply a coating
of wax or chrome preservative and rub
to a high luster.
• During winter weather or in coastal
areas, cover the bright metal parts
with a heavier coating of wax or
preservative. If necessary, coat the
parts with non-corrosive petroleum
jelly or other protective compound.
Underbody maintenance
Corrosive materials used for ice and
snow removal and dust control may
collect on the underbody. If these
materials are not removed, accelerated
rusting can occur on the underbody
parts such as the fuel lines, frame,
floor pan and exhaust system, even
though they have been treated with rust
protection.
Thoroughly flush the vehicle underbody
and wheel openings with lukewarm
or cold water once a month, after off-
road driving and at the end of each
winter. Pay special attention to these
areas because it is difficult to see all
the mud and dirt. It will do more harm
than good to wet down the road grime
without removing it. The lower edges
of the doors, rocker panels, and frame
members have drain holes that should
not clog with dirt; trapped water in these
areas can cause rusting.
WARNING
After washing the vehicle, test the
brakes while driving slowly to see if
they have been affected by water. If
braking performance is impaired, dry
the brakes by applying them lightly
while maintaining a slow forward
speed.
Aluminum wheel maintenance
The aluminum wheels are coated with a
clear protective finish.
• Do not use any abrasive cleaner,
polishing compound, solvent, or wire
brushes on aluminum wheels. They
may scratch or damage the finish.
• Clean the wheel when it has cooled.
• Use only a mild soap or neutral
detergent, and rinse thoroughly with
water. Also, be sure to clean the
wheels after driving on salted roads.
This helps prevent corrosion.
• Avoid washing the wheels with high-
speed car wash brushes.
• Do not use any alkaline or acid
detergent. It may damage and corrode
the aluminum wheels coated with a
clear protective finish.

10-98
Maintenance
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained in the Service
Passport in your vehicle.
Your vehicle is equipped with an
emission control system to meet all
emission regulations.
There are three emission control systems
which are as follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to assure the proper function
of the emission control systems, it
is recommended that you have your
car inspected and maintained by
an authorized HYUNDAI dealer in
accordance with the maintenance
schedule in this manual.1. Crankcase emission control
system
The positive crankcase ventilation
system is employed to prevent air
pollution caused by blow-by gases
being emitted from the crankcase. This
system supplies fresh filtered air to the
crankcase through the air intake hose.
Inside the crankcase, the fresh air mixes
with blow-by gases, which then pass
through the PCV valve into the induction
system.
2. Evaporative emission control
system
The Evaporative Emission Control
System is designed to prevent
fuel vapors from escaping into the
atmosphere.
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in
the canister are drawn into the surge
tank through the purge control solenoid
valve.
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve
is controlled by the Engine Control
Module (ECM); when the engine coolant
temperature is low during idling, the
PCSV closes so that evaporated fuel
is not taken into the engine. After
the engine warms up during ordinary
driving, the PCSV opens to introduce
evaporated fuel to the engine.
(0,66,21&21752/6<67(0

10-100
Maintenance
Operating precautions for catalytic
converters (if equipped)
WARNING
Fire
• A hot exhaust system can ignite
flammable items under your vehicle.
Do not park, idle, or drive the vehicle
over or near flammable objects, such
as grass, vegetation, paper, leaves,
etc.
• The exhaust system and catalytic
system are very hot while the engine
is running or immediately after the
engine is turned off. Keep away from
the exhaust system and catalytic, you
may get burned. Also, do not remove
the heat sink around the exhaust
system, do not seal the bottom of the
vehicle or do not coat the vehicle for
corrosion control. It may present a
fire risk under certain conditions.Your vehicle is equipped with a catalytic
converter emission control device.
Therefore, the following precautions
must be observed:
• Use only UNLEADED FUEL for petrol
engine.
• Do not operate the vehicle when
there are signs of engine malfunction,
such as misfire or a noticeable loss of
performance.
• Do not misuse or abuse the engine.
Examples of misuse are coasting with
the ignition off and descending steep
grades in gear with the ignition off.
• Do not operate the engine at high idle
speed for extended periods (5 minutes
or more).
• Do not modify or tamper with any
part of the engine or emission
control system. All inspections and
adjustments must be made by an
authorized HYUNDAI dealer.
• Avoid driving with a extremely low fuel
level. Running out of fuel could cause
the engine to misfire, damaging the
catalytic converter.
Failure to observe these precautions
could result in damage to the catalytic
converter and to your vehicle.
Additionally, such actions could void
your warranties.

10-101
10
Diesel particulate filter (DPF)
(if equipped)
The Diesel Particulate Filter (DPF)
system removes the soot in the exhaust
gas. Unlike a disposable air filter,
the DPF system automatically burns
(oxidizes) and removes the accumulated
soot according to the driving condition.
In order words, the active burning by
engine control system and high exhaust
gas temperature caused by normal/high
diving condition burns and removes the
accumulated soot.
However, if the vehicle continues to
be driven at repeated short distance
or driven at low speed for a long time,
the accumulated soot may not be
automatically removed because of low
exhaust gas temperature. More than
a certain amount of soot deposited,
the malfunction indicator light (
)
illuminates.
When the malfunction indicator light
illuminates, it may turn-off after driving
the vehicle at more than 60km/h (37
mph) or at more than second gear with
1500~2500 engine rpm for a certain time
(for about 25 minutes).
If the malfunction indicator light (
) is not turn-off or blinking continuesly
in spite of the procedure, visit a
professional workshop and check the
DPF system. HYUNDAI recommends
to visit an authorized HYUNDAI dealer/
service partner.
If you continue to drive with the
malfunction indicator light blinking for
a long time, the DPF system can be
damaged and fuel consumption can be
worsen and the engine durability can be
worsen by oil dilution.
CAUTION
Diesel Fuel (if equipped with DPF)
We recommend you to use only the
regulated diesel fuels, when your
vehicle is equipped with the DPF
system.
When you use other diesel fuels, which
is high in sulfurs (above 50 ppm) or
contains unspecified additives, it may
damage the DPF system and cause the
white smoke emission.
Lean NOx Trap (if equipped)
The Lean NOx Trap (LNT) system
removes the nitrogen oxide in the
exhaust gas. The smell can occur in the
exhaust gas depending on the quality
of the fuel and it can degrade NOx
reduction performance, please use the
regulated automotive diesel fuel.

10-102
Maintenance
4. Self Regeneration Mode
LCD Type
If the warning message “Self
Regeneration” is stored in inspection
message tap, it is operable in LCD
warning message page.
WARNING
• Make sure the vehicle parked on
safety zone (to avoid the flammables
like grass and traffic accident)
• Check remained fuel above 1/5 of
full level fuel gauge to prevent fuel
overheat
• Open the hood to prevent engine
room overheat
• Self regeneration should be done
only when DPF indicator illuminates
OSU2I089042OSU2I089042
If the warning message “Diesel filter
regeneration required, See owner’s
manual.” appears on the LCD display,
Self Regeneration is required
To initiate Self Regeneration
1. Engage parking brake and shift lever
at P state.
2. Turn on the engine
3. Warm up the engine and check engine
temperature gauge at the middle
position
4. Turn on the air conditioner and set the
blower to the maximum.
5. Turn on the high beam.
6. Operate the rear defog function.
7. Hold the OK button on the LCD
warning message page.
OSU2I089039OSU2I089039
8. Turn off and turn on the engine again.