Hey guys - bought a 2007 TT about two months ago (CPO, 25k miles). On my commute home today in lot's of stop-and-go traffic I started hearing a scraping/screeching noise that I think was coming from the driver side front wheel, like metal on metal. The noise alternated between a rubbing sound to a terrible scraping/screeching noise.

I happen to be driving by an independent shop that works on P-cars when the noise started so pulled in to talk to a tech. Took him for a short drive so he could hear it. Other than confirming the noise was coming from the left side of the car, he didn't have an idea and said there wasn't anyway to diagnose without getting it up on the lift. Unfortunately, he couldn't do it right then and there. He said it didn't sound like something catastrophic and recommended going to a dealer since it's under warranty. I continued home at that point (about 2 miles) figuring i would ask you guys before calling the dealer tomorrow.

The noises continued on the way home and would change a little when turning, braking or accelerating. The noise was unchanged when engaging the clutch and coasting.

Then, when I was a quarter mile from home, the screeching suddenly got very loud, and then there was a clunking noise...and the problem went away... completely.

My first assumption is that perhaps a rock got caught somewhere in the brakes, but no evidence of scoring or anything. There is still a lot of rocks/sand on the roads here in Northern VA from the winter. Sitting here thinking about it, I am remembering a similar thing happened soon after I bought the car about 2 months ago but the problem rectified itself after only about 1/8 mile - but same sounds, then a clunk and all better.

Any thoughts, suggestions, similar experiences? (I forgot to mention I have PCCBs).

Thanks!

 

I think you ran over a lawyer........the screeching will stop soon enough!

 

It could have been a small branch getting stuck between rotor/brake and the metal shield. It happened to me and it sounded just as you described. However, I was able to see it and pull it out without lifting the car. If it's happening on a regular basis then my guess is something is loose or mechanically wrong.

 

Occurred to me as well (I also have PCCBs) and it sounded horrible. Turns out a piece of debris got wedged in the front driver-side braking mechanism. A blast from a pressure washer hose did the trick...

 

I have had the same, rock stuck between rotor and protective shield. The best thing about it was that people would just run away from the car thinking it's about to explode. Having said that, take another look around and under the car and check your suspension pieces, just in case it was something else.