Yes, that was what I meant by the siren like sound. I just found that sound funny.Is the siren-like sound when starting the engine? If yes this is normal.
Something is wrong with your math, just saying.So i recently bought my 2017 Elantra GL early last July, and have already put on 33000km(52800miles) and today when I pulled away from the light slowly engine was warm, a lot of noise coming from the air vents. The radio is turned off and the fan is off as well. Side note also have a whistling issue on my passenger right side mirror.