Loud Thud! Car Will Not Move
So after installing my H&R Coilovers I took the car in for some alignment. The tech got in the car to back it up to take it in and when he tried to back it up the car mad a loud thud and stalls. I thought he had broken something because the noise was loud. He tried to move forward and backward but the car put itself back to park. He attempted a few more times but could not get the car to move. So I went to see what is going on and got in the car, put my seatbelt on, put the car in reverse and backed up. The tech looked at me with astonish and laugh. I guess you have to put seatbelt on in order drive the car. So after the alignment I tried to replicate the problem again at home it did not happend. I took the car in to BMW and told them what happend, the tech has no idea what can cause this. Has this happend to anyone else? My var is a 2010 528i. Thanks!