There’s a high pitched squeaky sound my car keeps making. Been happening for months, I’ve gone to the dealership twice to have it fixed and both times they ‘couldn’t figure it out’ here is a video of the sound. I’m walking around the car to help pinpoint the closest place where it could be coming from.
https://youtube.com/shorts/ovE2Q-YzZ_U?feature=share
Start by checking the fan belts for looseness and wear and the idler pulley. After that, put a long metal bar on your alternator and power steering pump to listen for bearings going out.
Did you drive through water recently? Very odd for a 2yr old car to have one of the pulleys go out.
Still, in addition to @doc ‘s advice -
take off the serpentine belt and see if the squeak goes away
Apparently all those things were checked at the dealership unfortunately.
Then you need to find an honest, independent mechanic in your area and let them diagnose what’s going on.