Driving your vehicle -> ISG malfunction for Your Hyundai I20 4 Door 2021-2026

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.  
ISG malfunction  
The system may not operate when:  
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)  
OBC3060009  
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.  
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