engine HYUNDAI I20 2023 Owners Manual

6-35
06
Power brakes
Your vehicle has power-assisted brakes
that adjust automatically through normal
usage.
If the engine is not running or is turned
off whilst driving, the power assist for
the brakes will not work. You can still
stop your vehicle by applying greater
force to the brake pedal than typical.
The stopping distance, however, will be
longer than with power brakes.
When the engine is not running, the
reserve brake power is partially depleted
each time the brake pedal is applied.
Do not pump the brake pedal when the
power assist has been interrupted.
Pump the brake pedal only when
necessary to maintain steering control
on slippery surfaces.
WARNING
Take the following precautions:

[Do not drive with your foot resting
on the brake pedal. This will create
abnormal high brake temperatures,
excessive brake lining and pad wear,
and increased stopping distances.

[When descending down a long or
steep hill, downshift to a lower
gear in order to control your
speed without using the brake
pedal excessively. Applying the
brakes continuously will cause
the brakes to overheat and could
result in a temporary loss of braking
performance.

[Wet brakes may impair the vehicle’s
ability to safely slow down; the
vehicle may also pull to one side
when the brakes are applied.
Applying the brakes lightly will
indicate whether they have been
affected in this way. Always test your
brakes in this fashion after driving
through deep water. To dry the
brakes, lightly tap the brake pedal to
heat up the brakes whilst maintaining
a safe forward speed until brake
performance returns to normal.
Avoid driving at high speeds until the
brakes function correctly.
Disc brakes wear indicator
When your brake pads are worn and new
pads are required, you will hear a high
pitched warning sound from your front
or rear brakes. You may hear this sound
come and go or it may occur whenever
you depress the brake pedal.
Note that some driving conditions or
climates may cause a brake squeal
when you first apply (or lightly apply)
the brakes. This is normal and does not
indicate a problem with your brakes.
NOTICE
To avoid costly brake repairs, do not
continue to drive with worn brake pads.
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BRAKING SYSTEM

6-37
06
Parking brake warning light
Check the Parking Brake
Warning Light by placing the
ignition switch to the ON
position (do not start the
engine).
This light will illuminate when the
parking brake is applied with the ignition
switch in the START or ON position.
Before driving, be sure the parking brake
is released and the Brake Warning Light
is OFF.
If the Parking Brake Warning Light
remains on after the parking brake is
released whilst the engine is running,
there may be a malfunction in the
brake system. Immediate attention is
necessary.
If at all possible, cease driving the
vehicle immediately. If that is not
possible, use extreme caution whilst
operating the vehicle and only continue
to drive the vehicle until you can reach a
safe location.
Anti-lock Brake System (ABS)
WARNING
An Anti-Lock Braking System (ABS) or
an Electronic Stability Control (ESC)
system will not prevent accidents
due to improper or dangerous driving
manoeuvres. Even though vehicle
control is improved during emergency
braking, always maintain a safe
distance between you and objects
ahead of you. Vehicle speeds should
always be reduced during extreme
road conditions. The braking distance
for vehicles equipped with ABS or ESC
may be longer than for those without
these systems in the following road
conditions.
Drive your vehicle at reduced speeds
during the following conditions:

[Rough, gravel or snow-covered
roads.

[On roads where the road surface is
pitted or has different surface height.

[Tyre chains are installed on your
vehicle.
The safety features of an ABS or ESC
equipped vehicle should not be tested
by high speed driving or cornering. This
could endanger the safety of yourself
or others.
ABS is an electronic braking system that
helps prevent a braking skid. ABS allows
the driver to steer and brake at the same
time.

6-38
Driving your vehicle
Using ABS
To obtain the maximum benefit from
your ABS in an emergency situation,
do not attempt to modulate your brake
pressure and do not try to pump your
brakes. Depress your brake pedal as
hard as possible.
When you apply your brakes under
conditions which may lock the wheels,
you may hear sounds from the brakes,
or feel a corresponding sensation in the
brake pedal. This is normal and it means
your ABS is active.
ABS does not reduce the time or
distance it takes to stop the vehicle.
Always maintain a safe distance from the
vehicle in front of you.
ABS will not prevent a skid that results
from sudden changes in direction, such
as trying to take a corner too fast or
making a sudden lane change. Always
drive at a safe speed for the road and
weather conditions.
ABS cannot prevent a loss of stability.
Always steer moderately when braking
hard. Severe or sharp steering wheel
movement can still cause your vehicle
to veer into oncoming traffic or off the
road.
On loose or uneven road surfaces,
operation of the anti-lock brake system
may result in a longer stopping distance
than for vehicles equipped with a
conventional brake system.
The ABS warning light (
) will stay
on for several seconds after the ignition
switch is in the ON position. During
that time, the ABS will go through self-
diagnosis and the light will go off if
everything is normal. If the light stays
on, you may have a problem with your
ABS. We recommend that you contact a
HYUNDAI authorised repairer as soon as
possible.
WARNING
If the ABS warning light () is on and
stays on, you may have a problem with
the ABS. Your power brakes will work
normally. To reduce the risk of serious
injury or death, we recommend that
you contact your HYUNDAI dealer as
soon as possible.
NOTICE
When you drive on a road having poor
traction, such as an icy road, and apply
your brakes continuously, the ABS will
be active continuously and the ABS
warning light (
) may illuminate. Pull
your vehicle over to a safe place and
turn the engine off.
Restart the engine. If the ABS warning
light is off, then your ABS system is
normal.
Otherwise, you may have a problem
with your ABS system. We recommend
that you contact a HYUNDAI authorised
repairer as soon as possible.
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6-39
06
Electronic Stability Control
(ESC)
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The Electronic Stability Control (ESC)
system helps to stabilize the vehicle
during cornering manoeuvres.
ESC checks where you are steering and
where the vehicle is actually going.
ESC applies braking pressure to any one
of the vehicle’s brakes and intervenes in
the engine management system to assist
the driver with keeping the vehicle on
the intended path. It is not a substitute
for safe driving practices. Always adjust
your speed and driving to the road
conditions.
WARNING
Never drive too fast for the road
conditions or too quickly when
cornering. The ESC system will not
prevent accidents.
Excessive speed in turns, abrupt
manoeuvres, and hydroplaning on wet
surfaces can result in severe accidents.
ESC operation
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When the ignition switch is in the
ON position, the ESC and the ESC
OFF indicator lights illuminate for
approximately three seconds. After both
lights go off, the ESC is enabled.
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When the ESC is in
operation, the ESC indicator
light blinks:

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conditions which may lock the wheels,
you may hear sounds from the brakes,
or feel a corresponding sensation in
the brake pedal. This is normal and it
means your ESC is active.

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may not respond to the accelerator as
it does under routine conditions.

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the ESC activates, the Cruise Control
automatically disengages. The Cruise
Control can be reengaged when the
road conditions allow. See “Cruise
Control System” later in this chapter
7 (if equipped).

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driving on a slippery road, the engine
RPM (revolutions per minute) may
not increase even if you press the
accelerator pedal deeply. This is to
maintain the stability and traction of
the vehicle and does not indicate a
problem.

6-40
Driving your vehicle
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To cancel ESC operation :

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Press the ESC OFF button briefly. The
ESC OFF indicator light and/or message
‘Traction Control disabled’ will illuminate
and a warning chime sounds. In this
state, the traction control function of
ESC (engine management) is disabled,
but the brake control function of ESC
(braking management) still operates.

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Press and hold the ESC OFF button
continuously for more than 3 seconds.
The ESC OFF indicator light and/or
message ‘Traction control and ESC
disabled’ illuminates and a warning
chime sounds. In this state, both the
traction control function of ESC (engine
management) and the brake control
function of ESC (braking management)
are disabled.
If the ignition switch is placed in the
LOCK/OFF position when ESC is off, ESC
remains off. Upon restarting the vehicle,
the ESC will automatically turn on again.
Indicator lights
„ ESC indicator light (blinks)
„ ESC OFF indicator light (comes on)
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When the ignition switch is in the
ON position, the ESC indicator light
illuminates, then goes off if the ESC
system is operating normally.
The ESC indicator light blinks whenever
the ESC is operating.
If the ESC indicator light stays on, your
vehicle may have a malfunction with
the ESC system. When this warning
light illuminates we recommend that
the vehicle be checked by a HYUNDAI
authorised repairer as soon as possible.
The ESC OFF indicator light comes on
when the ESC is turned off with the
button.
WARNING
When the ESC is blinking, this indicates
the ESC is active:
Drive slowly and NEVER attempt to
accelerate. NEVER turn the ESC off
whilst the ESC indicator light is blinking
or you may lose control of the vehicle
resulting in an accident.
NOTICE
Driving with wheels and tyres with
different sizes may cause the ESC
system to malfunction. Before
replacing tyres, make sure all four tyres
and wheels are the same size. Never
drive the vehicle with different sized
wheels and tyres installed.

6-41
06
ESC OFF usage
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The ESC OFF mode should only be used
briefly to help free the vehicle if stuck in
snow or mud, by temporarily stopping
operation of the ESC, to maintain wheel
torque.
To turn ESC off whilst driving, press the
ESC OFF button whilst driving on a flat
road surface.
NOTICE
To prevent damage to the transmission:

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spin excessively whilst the ESC, ABS,
and parking brake warning lights
are displayed. The repairs would not
be covered by the vehicle warranty.
Reduce engine power and do not spin
the wheel(s) excessively whilst these
lights are displayed.

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a dynamometer, make sure the
ESC is turned off (ESC OFF light
illuminated).
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Vehicle Stability Management
(VSM)
The Vehicle Stability Management (VSM)
is a function of the Electronic Stability
Control (ESC) system. It helps ensure the
vehicle stays stable when accelerating
or braking suddenly on wet, slippery and
rough roads where traction over the four
tyres can suddenly become uneven.
WARNING
Take the following precautions when
using the Vehicle Stability Management
(VSM):

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distance to the vehicle ahead. The
VSM is not a substitute for safe
driving practices.

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conditions. The VSM system will not
prevent accidents. Excessive speed
in bad weather, slippery and uneven
roads can result in severe accidents.

6-46
Driving your vehicle
Your vehicle may be equipped with
the ISG system, which reduces fuel
consumption by stopping and restarting
the engine automatically.
The engine starts automatically as soon
as the starting conditions are met.
NOTICE
When the engine automatically starts
by the ISG system, some warning lights
(ABS, ESC, ESC OFF, EPS or Parking
brake warning light) may turn on for a
few seconds. This happens because of
low battery voltage. It does not mean
the system is malfunctioning.
Activating the ISG
Prerequisite for activation
The ISG system operates in the following
situations.

[The driver’s seatbelt is fastened

[The driver’s door and bonnet are
closed

[The brake vacuum pressure is
adequate

[The battery sensor is activated and the
battery is sufficiently charged

[Outside temperature is not too low or
too high

[The vehicle is driven over a constant
speed and stops

[ The climate control system satisfies
the conditions

[The vehicle is sufficiently warmed up

[The incline is gradual

[The steering wheel is turned less than
180 degrees and then the vehicle
stops
Deactivating the ISG
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If you want to deactivate the ISG system,
press the ISG OFF button.
The light on the ISG OFF button will
illuminate.
If you press the ISG OFF button again,
the system will be activated and the light
on the ISG OFF button will turn off.
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6-47
06
Auto stop
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Manual Transmission/Intelligent
Manual Transmission
1. Decrease the vehicle speed to less
than 3 mph (5 km/h).
2. Shift into N (Neutral) position.
3. Release the clutch pedal.
Automatic Transmission/Dual Clutch
Transmission
1. Decrease the vehicle speed to 0 mph
(0 km/h).
2. Press the brake pedal.
The engine will stop and the green AUTO
STOP indicator (
) on the instrument
cluster will illuminate.
NOTICE

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manual transmission or intelligent
manual transmission must reach
a speed of at least 5 mph (8 km/h)
since last idle stop and vehicle
which is equipped with automatic
transmission or dual clutch
transmission must reach a speed of
at least 3 mph (5 km/h) since last idle
stop.

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the driver’s door (engine bonnet), ISG
system will be deactivated.
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Manual Transmission/Intelligent
Manual Transmission
Three versions of idle stop are available
for MHEV which is equipped with
manual transmission or intelligent
manual transmission.
- Conventional Idle STOP

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than 4 mph (7 km/h).

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- Extended Idle STOP

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- During Sailing Mode
You can keep engine off status from
sailing to standstill by pressing clutch
and brake pedal nearly at the same time.
NOTICE
1. If last gear position was the 1st, ISG
STOP will not be activated.
2. Vehicle which is equipped with
manual transmission or intelligent
manual transmission must reach
a speed of at least 5 mph (8 km/h)
since last idle stop.
3. During ISG STOP status, you can shift
into N(Neutral) position and release
clutch pedal, then ISG STOP status
will remain as STOP.
4. Extended Idle STOP operates even
over 4 mph (7km/h) if it meets the
speed requirement in each gear
position. (example: Extended Idle
STOP operates even at the 3rd speed,
24 mph (40km/h)).
5. If you unfasten the seat belt or open
the driver’s door (engine bonnet), ISG
system will be deactivated.

6-48
Driving your vehicle
Automatic Transmission/Dual Clutch
Transmission
- Conventional Idle STOP

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(0 km/h).

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- Extended Idle STOP

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15 mph (25 km/h).

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- During Sailing Mode
You can keep engine off status from
sailing to standstill by pressing brake
pedal below 24 mph (40 km/h).
NOTICE
Vehicle which is equipped automatic
transmission or dual clutch
transmission must reach a speed of at
least 18 mph (30 km/h) for Extended
Idle STOP or 3 mph (5 km/h) for
Conventional Idle STOP since last idle
stop.
- If you unfasten the seat belt or open
the driver’s door (engine bonnet)
in auto stop mode at standstill, ISG
system will be deactivated.
Auto start
To restart the engine from idle stop
mode (except 48V MHEV)
Manual transmission vehicle/ Intelligent
Manual Transmission
Vehicle which is equipped with manual
transmission or intelligent manual
transmission is available two version of
restart.
- Conventional restart
Press the clutch pedal when the shift
lever is in the N (Neutral) position.
- Late restart (if equipped)
1. Depress the clutch pedal
2. Engage the gear
3. Release the brake pedal
NOTICE
1. Late restart function is only operated
when it is on a level ground and the
vehicle is stable.
2. To start the engine when the brake
pedal is not pressed or gear is already
engaged, press the brake pedal first
and press on the clutch pedal for
safety.
3. To turn on the engine without vehicle
movement with the brake pedal
pressed (only with Late Restart),

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immediately
4. After the engine stall, If you operate
as below the engine will start.

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engine completely stop

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6-49
06
Automatic Transmission/Dual Clutch
Transmission
- Release the brake pedal.
The engine will start and the green AUTO
STOP indicator (
) on the instrument
cluster will go out.
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Manual Transmission/Intelligent
Manual Transmission
- Before standstill
Press the clutch pedal if the clutch pedal
has not pressed.
If the clutch pedal has already been
pressed, release the brake pedal or
move the gear to a position other than N
position.
- After standstill

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pressed, release the brake pedal or
move the gear from N (Neutral).

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engine will restart in accordance with
the LATE Restart procedure.
1) Depress the clutch pedal
2) Engage the gear
3) Release only the brake pedal
NOTICE
1. Late restart function is only operated
when it is on a level ground and the
vehicle is stable.
2. To start the engine when the brake
pedal is not pressed or gear is already
engaged, press the brake pedal first
and press on the clutch pedal for
safety.
3. To turn on the engine without vehicle
movement with the brake pedal
pressed (only with Late Restart),

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immediately
4. After the engine stall, if you operate
as below the engine will start.

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engine completely stops

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5. After operating ISG STOP, if the
vehicle speed increases instead of
decreasing, the engine may restart
automatically.
Automatic Transmission/Dual Clutch
Transmission
Release the brake pedal
NOTICE
After operating ISG STOP, if the vehicle
speed increases instead of decreasing,
the engine may restart automatically.