This indicator light illuminates when:
Hyundai Kona (OS) 2018-2021 Service Manual: Description and operation
Description
Ignition timing is controlled by the electronic control ignition timing system.
The standard reference ignition timing data for the engine operating conditions
are pre-pro grammed in the memory of the ECM (Engine Control Module).
The engine operating conditio ...
Hyundai Kona (OS) 2018-2021 Owners Manual: FCA sensor
In order for the FCA system to operate properly, always make sure the sensor
cover or sensor is clean and free of dirt, snow, and debris.
Dirt, snow, or foreign substances on the lens may adversely affect the sensing
performance of the sensor.
NOTICE
Do not apply license plate molding or foreig ...