Mine airbag sensor was reset morning after purchase. Brought back next day with airbag warning and seat calibration warning and adaptive headlight failure warning. Replaced seat control module which "fixed airbag warning" and replace driver's headlight. Then, computer told them to replace headlight control module. All's well for two weeks when airbag warning on again. Also noticed small stain on garage floor.

As of yesterday, even talking to BMW they can't get airbag fixed. And, leak is from bad front diff seal. Need to replace. That's where I am now.