This warning light illuminates:
When there is a malfunction with the hybrid system.
In this case, we recommend that you have the vehicle inspected by an authorized Kia dealer.
Kia Niro 2017 (DE HEV) Service Manual: Hybrid Starter Generator(HSG) Components and components location
Components
1. Hybrid starter generator (HSG)
2. HSG bracket
...
Kia Niro 2017 (DE HEV) Service Manual: Specification
Specifications
Item
Specification
Rated voltage
DC 13.5 V
Operating voltage
DC 9.0 - 16.0 V
Operating temperature
-86 - 167°F (-30 - 75°C)
Dark current ...