My 2000 540i sport was involved in a left side collision...I slid into a sign at about 50mph. I've got everything worked out except for the airbags. The driver door and driver side curtain airbags deployed. I know the airbags have to be replaced but what sensors would need to be replaced? I have read about having to replace the airbag module under the dash and some stuff about something under the driver seat and the seatbelt that was in use. I also read that if there was no stress on the seatbelt during the crash, which there was absolutely none, then it would be standard BMW procedure to be replaced but not necessary. Any info on this would be nice as I've read conflicting things on here and Bimmerforums.