2023 HYUNDAI I20 Isg

6-50
Driving your vehicle
Condition of ISG system
operation
The ISG system will operate under the
following condition:

[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 vehicle is not on a steep road
grade (Except Manual Transmission)

[The steering wheel is not at a sharp
angle

[The vehicle is not at a high elevation

[The front windscreen defroster is off

[You have not selected Manual shift
mode (Except Manual Transmission)

[When sufficient time has elapsed after
shifting to R (Reverse) was released
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06
ISG Indication
The ISG System is indicated by lamp on
the instrument cluster. If your vehicle is
equipped with a supervision cluster, the
notice will illuminate on the LCD display.
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The system may require the engine to
manually restart when the light on the
ISG OFF button will illuminate and if your
vehicle is equipped with a supervision
cluster, a warning message comes on
continuously.
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The engine will not start if the shift lever
is moved from the N (neutral) stage to
the D (driving) stage, manual mode, or R
(reverse) stage without stepping on the
brake pedal whilst the engine is stopped
automatically. At this time, if you press
the brake it will be restarted.

6-52
Driving your vehicle
Conventional MT vehicle (not MHEV or
not equipped with LATE Restart) is able
to restart engine, only in Neutral gear.
If you select a gear, without depressing
clutch pedal fully, then warning will be
displayed with beep. You should restart
the engine in Neutral gear position.
Unintentionally, when the engine is
turned off or the vehicle is moving, if the
gear is engaged and the clutch pedal
is not pressed, the system displays the
warning message as shown below. At
this time, if the driver presses the clutch
pedal all the way, the engine restarts
automatically. (Only with Late Restart
equipped ISG system, except MHEV)
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ISG malfunction
The system may not operate when:
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The ISG related sensors or system error
occurs.
The yellow AUTO STOP indicator
(
) on the instrument cluster will
stay on after blinking for 5 seconds and
the light on the ISG OFF button will
illuminate.
NOTICE

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turned off by pressing the ISG OFF
button again or if the ISG system
continuously does not work correctly,
have your vehicle inspected by a
professional workshop as soon as
possible. Hyundai recommends
to contact a HYUNDAI authorised
repairer.

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on, it may stop illuminating after
driving your vehicle at approximately
50 mph (80 km/h) for a maximum
of two hours and setting the fan
speed control knob below the 2nd
position. If the ISG OFF button light
continues to be illuminated in spite
of the procedure, have your vehicle
inspected by a professional workshop
as soon as possible. Hyundai
recommends to contact a HYUNDAI
authorised repairer.

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06
NOTICE
If you want to use the ISG function, the
battery sensor needs to be calibrated
for approximately 4 hours with the
ignition off and then, turn the engine
on and off 2 or 3 times.
WARNING
When the engine is in Idle Stop mode,
it’s possible to restart the engine
without the driver taking any action.
Before leaving the car or doing
anything in the engine room area,
stop the engine by turning the ignition
switch to the LOCK (OFF) position or
removing the ignition key.