I have a 2019 EX-L AWD. I get like a grinding noise when the AC is turned on, right after a cold start. This doesn't happen when the engine is warm/hot. I have a video that shows this: Youtube. The noise can be heard around the 5/6 second mark. As the vehicle is still under warranty, took it to the dealer, but they were not able to replicate it. Any thoughts on what may be causing this?