Kia Niro 2017 (DE HEV) Service Manual: Repair procedures
Replacement
Use a plastic panel removal tool to remove interior trim pieces without
marring the surface.
1.
Open the fuel filler door and then filler door cap.
2.
...
Kia Niro (DE HEV) Owners Manual: Hill-start assist control (HAC)
A vehicle has the tendency to slip back on a steep hill when it starts to go
after stopping. The Hill-start Assist Control (HAC) prevents the vehicle from slipping
back by operating the brakes automatically for about 1~2 seconds. The brakes are
released when the accelerator pedal is depressed ...