After starting the car, and going in reverse, you can hear a cracking or clicking noise (it's really hard to tell), and sometimes it's really loud, if the brakes or something else was stuck and was about to break a part. it sounds on the read side and in the front side too. you can hear one or 3 clicks. i took my car to the dealer around 3 times in 5 months and first, i was told its normal, the second time i was pushy, and it was a matter of lubrication i wasn't told where exactly, and the last time the dealership manager told me that service department had to keep the car for a week, ( i got a loaner, but it has the same issue). the service department replaced the brake system, and rotors, inspect and lubricate all parts. but, i was told that they couldn't pin point the problem. the noise stopped, but i was told if it comes back, i had to take the car back to the dealer. after this incident, the next day in the morning while driving to work, my car stopped working, i couldn't break (i was driving at 27mph), the steering wheel got locked, i got all the alarms on, fcm, power steering problem, abs problem, asc, acc not available. i got really affraid, luckily i had no cars around.