Immobilizer Indicator Light (with Smart Key)

This indicator light stays on for up to 30 seconds:
When the vehicle detects the Smart Key inside the vehicle with the Engine Start/Stop button in the ACC or ON position.
-- Once the Smart Key is detected, you can start the engine.
-- The indicator light turns off after the engine starts.
This indicator light flashes for several seconds: When the Smart Key is not inside the vehicle.
-- If the Smart Key is not detected, you cannot start the engine.
This indicator light comes on for 2 seconds and then turns off:
If the Smart Key is inside the vehicle and the Engine Start/Stop button is on, but the vehicle cannot detect the Smart Key.
In this case, have the vehicle checked by an authorized HYUNDAI dealer. This indicator light flashes:
If there is a malfunction in the immobilizer system.
In this case, have the vehicle checked by an authorized HYUNDAI dealer.
Test yourself
A quick Hyundai Elantra CN7 quiz: every answer comes with an explanation and a link to the manual page.