Kia Niro 2017 (DE HEV) Service Manual: Components and components location
Component Location
1. Body Control Module (BCM)
2. Ultrasonic sensor
Front/rear parking assist control unit function is built into the Body
Control Module (BCM).
...
Kia Niro (DE HEV) Owners Manual: Trailer brakes
If your trailer is equipped with a braking system, make sure it conforms to your
country’s regulations and that it is properly installed and operating correctly.
If your trailer weight exceeds the maximum allowed weight without trailer brakes,
then the trailer will also require its own brakes ...