So last August I bought a 2015 wrx . So the turbo sounds like it’s making a whistling noise now after the winter is over . It also started making a ticking noise on the drivers side area right right behind the oil filter while I drive . As I shut the car off it whines down the tick from loud to quiet . My car now has 42k on it . Also it keeps saying check audio on the screen . Oh one last thing the cruise control would flash and when I red the codes it was the cluster panel not communicating but the car ran fine so I reset it . I also noticed it did this when we had freezing temperatures out side . Any help would be much appreciated. I used to own a Cadillac ATS and it had a turbo on it and it made more of a whooshing noise not a whistling noise . Is this noise common ?