While driving recently with the cruise control I was going up and hill and the car accelerated to maintain 80km, when descending down the hill the car picked up speed and then i noticed a weird noise as if the gears where grinding. So i took the car to the dealership, he couldn't anything wrong, he explaines it was the ABS brakes kicking in to slow the vechile and said it sounds like a motor starting, just wondering if anyone else has experienced the same issue