I stored my 08 V6 TT for the winter, and now when driving above 35 MPH I hear a whining noise, like a small bearing gone bad. The noise does not get louder or faster between 35 MPH and 75 MPH. It does not change with engine speed. It does not change with car speed. It does not change when I apply the brakes. It does not change when I alter the climate control fan speed, or turn the climate control off completely. Any thoughts?