2007~2015 Reverse Camera and reverse tail light always on

Hi Experts,

I am new on this forum and want to share my problem with my CX-9 car. I recently got an issue with my car. The reverse camera and reverse light is always on even car is in parking or in down gear. One of car electrician suspected/diagnose as inhibitor switch has issue but we found no issue with switch (when i get a another switch for replacement and no luck with problem)

Can any one advice me what is issue with car and how to get it done?

Model Year: 2011
Odometer: 113k