This warning light illuminates:
NOTICE
Driving with the Malfunction Indicator Lamp (MIL) on may cause damage to the emission control system which could affect drivability and/or fuel economy.
NOTICE - Gasoline Engine
If the Malfunction Indicator Lamp (MIL) illuminates, potential catalytic converter damage is possible which could result in loss of engine power.
In this case, we recommend that you have the vehicle inspected by an authorized HYUNDAI dealer as soon as possible.
Hyundai Kona (OS) 2018-2024 Owners Manual: Electric Chromic Mirror (ECM)
The electric rearview mirror automatically controls the glare from the headlamp
of the vehicle behind you in nighttime or low light driving conditions.
When the engine is running, the glare is automatically controlled by the sensor
mounted in the rearview mirror. The sensor detects the light level ...
Hyundai Kona (OS) 2018-2024 Service Manual: Exhaust Gas Temperature Sensor (EGTS) Repair procedures
Inspection
1.
Turn ignition switch OFF.
2.
Disconnect the connector of exhaust gas temperature sensors #1/#2.
3.
Measure resistance between sensor signal terminal and ground terminal.
4.
...