Thats for sure what set the airbag light on, you could do a search on ebay for a reset tool that does airbags,I can not honestly remember if there is, the reason is for safety as then anybody could reset it and the car could be potentially a death trap, I have the kit to do it but im the UK...so thats out..
There is however a software Carsoft 6.5 which is on ebay but you need the leads and a laptop not that expensive and does loads. just put in the ebay search bar "BMW diagnostics"
VELVET BLUE UK INDIVIDUAL , IM THE LAST
UNITED WE STAND DIVIDED WE FALL
I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!