why does my 2018 camry sqeak when backing up on a little incline
That would be a good question to ask your dealer at your next free oil change.
You have a warranty have the dealer take a look.
Squeaks and squeals are often brake or accessory-belt related. Your dealership shop techs have heard these sort of sounds of every description, and know what causes most of them on Camrys, so the advice above to ask at your dealership is spot on.
That’s to warn people around your car that you are backing up (lol)
Could be a little rust build-up on the parking brake drum assembly.How often do you drive this vehicule? Rust can form overnight due to temperature change,humidity,rain etc.