Weird high pitch noise can anyone help
 

There’s this weird noise going on my 2013 cx-9 it happens randomly and at first it was super loud sounded like a horn but whirring maybe like a fan. Stops when I turn the car off and back on (panic first time it happened) it don’t stop when I turn ac off or try the brakes/gas. Now it happened yesterday twice and it wasn’t as loud like maybe the part that’s bad is failing. Took to mechanic they said bring it when it happens but it happens random and only lasts maybe 2 mins. Here’s a short vid of one of the first times it happened.
thanks in advance for any help