This is a "name that sound" thread. I'm hoping to get a diagnosis since I have an appointment scheduled for Saturday for some routine maintenance at the dealership where I bought the car (I recently moved about 40 miles to be closer to work and the dealership is now ~40 miles away). I'm hoping for some advice on what the noise is and whether or not I should hold out or get in right away at a local dealership.
So, driving home on the highway (~40 miles) last night, I did not notice anything odd until I pulled in to park (although, I was listening to music fairly loud). When I pulled in to park, I heard a very loud screech like nails on a chalk board. I got out, walked around the vehicle looking for signs of the screech and found nothing. I got out and backed up and went forward again--no sound at all.
This morning I drove into work (~6 miles) and heard a very slight whirring noise coming from the passenger side of my vehicle only in the last half mile, but it vanished before arriving at work.
I then went out for lunch and heard a louder "nails on chalkboard" type of sound. I kept driving to try and identify where it was coming from and narrowed it down to the passenger side for sure. The noise would lessen when I applied the brake and then revert back to making a ton of noise.
I immediately scheduled an appointment with a local dealer because I don't want to mess around with metal on metal sounds. But then, on my way home tonight, I started out with really loud nail on chalk board sound, but the more I drove and applied my brakes, it eventually went away.
So, my prognosis so far:
1. It shouldn't be brake wear indicators since the problem goes away when I apply the brakes.
2. Possibly a bearing went? The only time I've had a bearing go previously on another vehicle, it started out relatively quite and increased to just a loud low-pitch whirring noise with increased speed--though I know you can get grinding depending on if you don't take care of it.
3. Possibly it was a rock that was stuck? (I don't know why it would come and go though)
4. Could rapidly transitioning between below freezing to 58 degrees Fahrenheit have anything to do with it?
I plan to take it out for another test drive tonight and if it continues to behave, I'm thinking I will let it go until Saturday and cancel my appointment for tomorrow. I'm just curious if anyone else has encountered something like this or if anyone really thinks I should get it in the shop ASAP even if it the noise has stopped for now.
P.S. My car just went out of warranty last month and has 51k