I have a minor problem with my S60 the dealer has looked at it a couple of times and says the brakes are fine, when I back out of my drive or a parking spot after the car has been sitting a while I get high pitched brake noise. I wonder if the pads are grabbing. The car does this consistently, there is no noise once I get going. The hand brake is released all the way. Any ideas, my wifes V70 does not do this only my S60 T5 M.