Question For Unknown Box under Body
 

Hi people, I have 2008 grand Vitara, 2.7 Engine V6,
Can anybody tell me what is this box(PP-T30)?
The location is under the left passenger door. Also, I am
attaching a photo.
https://cimg5.ibsrv.net/gimg/suzukif...1d728ce1f.jpeg
https://cimg7.ibsrv.net/gimg/suzukif...bd8ecd619.jpeg
https://cimg8.ibsrv.net/gimg/suzukif...3ab5d57aa.jpeg