I drive a 2018 HRV LX AWD and I have noticed in the past few weeks that Ive been hearing a whistle sound coming from the engine as I accelerate my car while I'm in drive. Sometimes I even hear a loud humming sound. Its more noticeable after a cold start or in colder climates. I'm not sure what exactly it is but I need help to figure this out. I am planning to take the car to the dealership and see what's going on.