Hyundai i30 N Owner's Manual page 282

Button Position
ON
Press the Engine Start/Stop button whilst it
is in the ACC position without depressing
the clutch pedal.
The warning lights can be checked before
the engine is started.
START
To start the engine, depress the clutch and
brake pedals and press the Engine Start/
Stop button with the shift lever in neutral.
Action Notes
Do not leave the Engine Start/Stop button in
the ON position when the engine is not run-
ning to prevent the battery from discharging.
If you press the Engine Start/Stop button
without depressing the clutch pedal, the
engine does not start and the Engine
Start/Stop button changes as follows:
OFF → ACC → ON → OFF or ACC
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