The engine compression can be used to slow the vehicle. The regenerative braking system can be used to charge the hybrid system.
(Wheel ➞ Engine & Battery)
Kia Niro 2017 (DE HEV) Service Manual: Mode Control Actuator Repair procedures
Inspection
1.
Switch "OFF" the ignition.
2.
Disconnect the mode control actuator connector.
3.
Verify that the mode control actuator operates to the defrost mode when
connecting 12V to terminal 3 and ground ...
Kia Niro 2017 (DE HEV) Service Manual: Rear Bumper Cover Components and components location
Component Location
1. Rear bumper cover
...