The sensors are located inside the rear bumper.
Always keep the rear bumper clean for the system to work properly.
Kia Niro 2017 (DE HEV) Service Manual: Reservoir Tank Repair procedures
Removal and Installation
1.
Drain the coolant.
(Refer to Cooling System - "Coolant")
2.
Disconnect the radiator reservoir hose (A).
3.
Disconnect the reservoir hose (B).
4.
Remove ...
Kia Niro 2017 (DE HEV) Service Manual: Rear Washer Switch Repair procedures
Inspection
Multifunction Switch
Inspection
1.
Check for continuity between the terminals in each switch position as
shown below.
[Left Handle
Drive]
Switch
Switch position
Switch terminal
...