The seat belt buckle/latch in the backseat is a dangerous defective design that can cause injury. It is available for inspection, see photos provided. Merely taking a seat can result in a bruised or broken coccyx. The car was parked when the incident occurred. No, the problem has not been reproduced by a dealer or independent service center. No, the component has not been inspected by the manufacturer, police, insurance reps or others. No, there are no warnings or messages. The danger is inherent in the design.