My buddy leases a new Caddy SUV. Very low miles and easy driving short tripping around town. Started hearing intermittent noise from front wheel when driving and not applying brakes. Took it in and dealer said pads are glazed and glazing will go away as the pads wear. I thought glazing came from high temperatures due to hard braking or a sticky caliper. Also, once pads are glazed, braking capacity is diminished causing a safety issue. Does the glazing explanation sound right? Should the pads be replaced or at least deglazed? Thanks.