My 07 Edge SEL Plus FWD has started making a groaning noise at low speeds when braking. Usually this only happens when the car has not been driven for a while. The brakes work fine but the noise doesn't sound good. It almost sounds like the ABS is coming on but there is no vibration in the brake pedal. We had the dealer look at it at the first service but couldn't reproduce the sound. Anybody have a similar issue with their Edge?