For the past month or so my brakes have been making a grinding noise right before i stop at low speed. It does not happen all the time. Seems to be louder when the brakes are cold. Not just first time in the morning. Brought it to the dealer twice and it did not happen when it was there. Figures. Dealer did take all four wheels off and showed me the brakes and they are good. Rotors and pads still in good shape. Dealer thinks it may be early ABS engagement but needs to hear the noise to be sure. Has anyone heard of this ABS issue or have any ideas what else it could be?