2017 rx 350 makes a noise when turned off

What is your question?

my 2017 rx 350 has been parked in the garage for about 3 hours and it is making some type of electric-like noise, maybe a pump like noise. what is causing this?

What makes this problem better or worse?

nothing makes it better or worse, sometimes it is making the noise and sometimes is't not.

How long has your 2017 Lexus RX350 had this problem?

about 1 year that it has been noticed