I know this is a very broad and general question, but my gen 3, Camry's rear breaks squeak as i brake. It is most evident during the hot, dry summer. Its not the brakes themselves, since its been squeaking even after I replaced them.
it could also be dust. my cam's brakes used to do that. then me and my dad used this compressed air gun thingy and shot at the brakes and dust came out like crazy. after that my braked didnt squeek anymore.
Alright, I know we got the rotors machined and that didnt help. About the brakes themselves, they are ceramic. Coincidentally, after I made this thread I read another one similar to it. In there, they were saying someting about anit-squeel springs or a anti-squeel oil?