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Discussion Starter #1
Hi all! We purchases a passion red LX for our son about 3 weeks ago. We love the vehicle but the brakes squeal. This happens especially after it has been sitting for a while. I called the service department today and they said this generally stops after about 1500 miles (Our current mileage is about 850). They said the rotors hav e coating on the, that needs to burn off. Anyone else have any experience with this?
 

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I'm not sure if what the service department said makes sense. My K5 EX has never made such a sound though. Bought on August 4, and currently only has about 1,100 miles on it.
 

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I think my '17 Optima had some weird brake oddities going on, for as long as I owned it, though it wasn't a squeal / squeak. They just sounded rough sometimes, and I never figured out why.
 

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Discussion Starter #6
I went home at lunch and got my son to back it up. It seems to only make a noise while in reverse and comes from the front drivers side brake. We couldn't get it to squeal while in drive.
 

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Discussion Starter #7
Sitting for extended times outside allows surface rust to form on rotor surfaces.
This could very well be it. I took it for a drive a while ago. Gave it a few good hard brakes. Came home and no squealing in reverse. i just wish it didn’t do it at all. Next week he starts in person school so he will be driving it a lot more. Maybe that will solve the issue.
Thank you both for your replies.
 

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To be clear, this happens on any make or model vehicle.
There’s really no way to stop it if it’s going to sit undriven outside, those shiny clean metal surfaces on the rotors are going to get some surface rust.
Not to worry, as you said just using the brakes a little bit cleans it right up.
There may be excessive oxidation buildup after some time, it could contaminate the pads.
But that’s gonna take a while and it may not happen at all.
Just be sure he cleans the brakes up by using them before needing to come to some type of emergency stop.
 
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