[batmobile]

I had the same issue, only I heard the high pitch noise everytime I pressed the accelerator. Just a tap and I would hear the noise, i took it to the dealer 6 times ( I do not give up!) and finally had it fixed. It is the bose system that causes the issue, A bose rep came to the dealership and actually replaced all of my speakers (don't know if they are updated or not, but the back ones sound better) and now I do not have that noise. Maybe the speakers they used prior are not as good as the '09 models?