Got the corolla hatchback not even a week ago and whenever the blower is running, there is this annoying, high pitched sound that gets louder as the fan blows harder.

I can only use the air or heat on a low setting because the faster the blades move the higher the noise gets. After a couple minutes I will get a headache but I deal with it because I can't drive with no A/C on its way too hot here.

High pitch whine that comes from the engine bay at certain fan speeds. I have fiddled around trying different fan speeds and it seems like half of them produce this whine. It's very annoying and has even given me a headache (only had it for one day). I am going to take it in back to the dealer after the weekend. I'm hoping it just needs to be broken in (only 50kms at the moment).