This warning light illuminates:
CAUTION - Malfunction Indicator Lamp (MIL)
Driving with the Malfunction Indicator Lamp (MIL) on may cause damage to the emission control systems which could affect drivability and/or fuel economy.
CAUTION - 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 Kia dealer as soon as possible.
Kia Niro (DE HEV) Owners Manual: Outside (fresh) air position
With the outside (fresh) air position selected, air enters the vehicle from outside
and is heated or cooled according to the function selected.
✽ NOTICE
Prolonged operation of the heater in the recirculated air position (without
air conditioning selected) may cause fogging of the windshiel ...
Kia Niro 2017 (DE HEV) Service Manual: DCT Control Module (TCM) Components and components location
Conponent Location
1. DCT Control Module (TCM)
...