2005 Lexus GS300 Q&A

2005 Lexus GS300 Question: my heat and air conditioner to 1 or 2 setting, there is a loud whistling sound?

but when I increase the setting to 3, 4 or 5 it stops, what might this indicate as a problem -
Answer 1
Hello Possible there is something in the vents or your blower motor bearing is showing signs of wear. Hope this helps RJ -