So I got a new one from my dealer the other day. My 2017 Pilot's AC stopped working. I took it in to get fixed as I thought it was uncommonly soon to have just such a problem. I was told from my dealership's service director that this has been coming up lately and they've started to call it the "Black Death". Essentially the motor in the compressor starts to breakdown and pollutes the entire AC system with black particles. So, much so that the entire system stops working. In my case America Honda is cover a large portion of the repair but I have no doubt that it will still be expensive. It is taking my dealership 4 days to do the work and this is after waiting several weeks for the parts. So, if I were you I'd have my AC system checked and try to get ahead of this particular problem. Also, it would not surprise me if there is a recall about it soon.