Has anyone had to replace their RS seatbelts after a crash? We are getting our 300d Turbo back on the road and the warning buzzer buzzes when the key is out and the door is open. I tried one from another car with the same results. Is the warning buzzer tied into the crash sensor and does this need to be replaced after an accident?Also where is it located? Can I use belts from another car despite the warning or will I be OK if I use the belts along with the crash sensor from the other car? Thanks in advance!