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: Inside Rear View Mirror Components and components location
Component Location
1. Inside rear view mirror
...
Toyota Corolla 2019-2023 Owners Manual: Using the interior lights. Interior lights list
Location of the interior lights
A - Rear interior light
B - Door trim lights
C - Front interior/personal lights
D - Center tray light
E - Cup holder lights
Operating the interior lights
■ Front
1 Turns the door position on/off
When a door is opened while the door position is on, the lights turn ...