i30 warning lights: 14 checks from stop to service

If an i30 warning light appears suddenly, start with the color and ask whether it is only part of the normal start-up check. Red oil-pressure, brake, charging and coolant warnings can require a stop before any further driving.

This guide follows the verified 2020 Hyundai i30 PD owner's manual and warning-light data. Trim, cluster type and equipment can change the displayed symbols, so compare the final icon with the official page for your exact model year.

14 i30 warning lights at a glance

Icons that appear briefly after startup can be part of the self-check. A light that remains on or returns while driving deserves the action below. The symbols were downloaded from Hyundai's official PD warning-light API and checked for contrast; the selection follows the 2020 manual's applicable gasoline coverage.

Group	Light	Meaning	Next action
Steering	EPS	Electric power steering fault	Stop safely if steering becomes heavy and arrange service.
Safety assist	Front safety	Feature off, sensor blocked or fault detected	Clean the camera/radar area and recheck.
Immediate	Oil pressure	Low oil level or oil pressure	Stop, check the oil and do not continue if the light remains.
Brakes	Brake	Parking brake, low fluid or brake-system issue	Slow down gently, stop and check the braking system.
Protection	Airbag	Airbag or pretensioner fault	Arrange a prompt inspection if it remains after 3–6 seconds.
Brakes	ABS	Anti-lock braking system fault	Restart once in a safe place; service it if it returns.
Engine	Engine	Engine control or fuel-system fault	Arrange service soon; tow the car if it will not start.
Immediate	Charging	Drive belt or charging-system fault	Inspect it and avoid continued driving if it stays on.
Overheating	Coolant temperature	Coolant temperature is too high	Stop driving and arrange an overheating check.
Tires	Low tire pressure / TPMS	Low pressure or sensor fault	Slow down and check all tires for damage and pressure.
Parking	EPB	Electronic parking-brake fault	Check release and service it if the light remains.
Stability	ESC	Flashing means intervention; steady can mean a fault	Slow down on slippery roads and inspect a steady light.
Emissions	GPF	Gasoline particulate filter issue	Follow the manual's safe driving procedure; service it if it remains.
Combined	Master warning	One or more assistance or vehicle issues	Read the cluster message before treating it as minor.

Hyundai's shared library also lists diesel, hybrid and EV items. They are not included here because this guide is narrowed to the 2020 gasoline PD manual.

Red lights mean a stop decision

Oil pressure, charging, coolant temperature and brake warnings should not be dismissed because the car still moves. An oil warning can lead to engine damage, a charging warning can precede overheating or a flat battery, and a coolant warning can signal overheating. If braking feel or steering assistance changes, slow down safely and arrange service rather than testing the car further.

Engine, tire and ABS warnings change the next drive

An engine warning can indicate an engine-control or fuel-supply issue. TPMS calls for lower speed and a tire check, while ABS should be treated seriously even if normal braking still works. GPF guidance in the 2020 manual uses a safe driving procedure; if the light flashes or a message remains afterward, arrange service rather than repeating the test indefinitely.

Use the exact manual for diesel, hybrid and EV versions

This guide is for the 2020 gasoline PD configuration. The shared Hyundai warning-light library can expose diesel fuel-filter or urea items, hybrid power-down or high-voltage-battery items, and EV READY indicators, but those should be checked in the exact manual for that powertrain.

The same model name can have different warning-light combinations in 2018, 2019 and 2020. Open the official manual, change the year selector, and compare the warning-light chapter for your own car.