The interior lights automatically turn off approximately 20 minutes after the ignition switch is turned off.
If your vehicle is equipped with the theft alarm system, the interior lights automatically turns off approximately 3 seconds after the system is armed stage.
Kia Niro (DE HEV) Owners Manual: Securing a Child Restraint System with the “ISOFIX Anchorage System”
To install an i-Size or ISOFIX-compatible Child Restraint System in either of
the rear outboard seating positions:
1. Move the seat belt buckle away from the ISOFIX anchorages.
2. Move any other objects away from the anchorages that could prevent a secure
connection between the Child Restraint ...
Kia Niro 2017 (DE HEV) Service Manual: Front Seat Belt Buckle Repair procedures
Replacement
1.
Remove the front seat assembly.
(Refer to Front Seat - "Front Seat Assembly")
2.
Remove the front seat belt buckle (A) after loosening the mounting bolt.
Tightening torque :
39.2 - 53.9 N ...