My car is 2009 3.5d. At random time, the car produce some noise as soon as I open the door before I start the car after overnight, from underneath the car, and last about 1 or 2 mins. I can't tell where exactly

Here is the video:
https://www.youtube.com/watch?v=OZhLZdFsIHg

The only thing I can guess is the air pump is doing inflation, but noise is not from the rear of the car. Can someone tell where this noise is from? Would this represent some premature failure? of the air pump?

Thanks