My car has less than forty five thousand miles on it. The rear diferential cracked. I have seen a lot of the same problem with other Jeep Cherokees and the differential cracks in the same spot each time, leading many of us to believe this was caused by a manufacturing defect. My car is recently out of power train warranty and the repair is over four thousand dollars. While I don’t know if this is related, in the car wash, my vehicle will flash a warning that I need to put the car in park and press the brake or it won’t go into drive. This is very distressing because in the car wash. There is usually a car moving a couple of feet behind me can I can’t press on the brake and put the vehicle in park.