This indicator light illuminates :
When you select "ECO" mode as drive mode.
WARNING
Do not watch the ECO indicator light while driving. This will distract you and may cause an accident that results in severe personal injury.
Hyundai Sonata LF 2014-2019 Owners Manual: Electronic Parking Brake (EPB) Warning Light
This warning light illuminates:
Once you set the ignition switch or the Engine Start/Stop button to the
ON position.
- It illuminates for approximately 3 seconds and then goes off.
When there is a malfunction with the EPB.
In this case, have your vehicle inspected by an authorized HYUNDAI de ...
Hyundai Sonata LF 2014-2019 Service Manual: Audio Remote Control (Sonata Sports) Schematic Diagrams
Circuit Diagram
...