The sensor detects the distance to the vehicle ahead.
If the sensor is covered with dirt or other foreign matter, the vehicle to vehicle distance control may not operate correctly.
Always keep the area in front of the sensor clean.
Kia Niro 2017 (DE HEV) Service Manual: License Lamps Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the license lamp assembly (A) after pressing the locking pin.
3.
Disconnect the license lamp connector (A).
4.
...
Kia Niro (DE HEV) Owners Manual: Interior overview
1. Inside door handle
2. Power window switch
3. Central door lock switch
4. Power window lock button
5. Outside rearview mirror control
6. Outside rearview mirror folding
7. Headlight leveling device
8. Instrument panel illumination control
9. BSD On/Off button
10. LKAS On/Off button
11. ...