Honestly it sounds like the belt to me. Mine did a much louder scarier version of that when i first bought it... sounded like the water pump was going out with all the screeching and howling going on under there... It would go on for about a min.. then disappear. Threw a new belt on it.. and its whisper quiet again. There is probably moisture/dirt/dust on the belt causing it to squeak until it warms up a little. U should try taking it back to the dealer to see if they will clean/replace it for you