hi mate, ive just come across this thread via a google search
i have a bmw e60 5 series and the seat belt/airbag light stays on, the diagnostic code is 93b2 safety battery terminal i.e bst
can you tell me if the above will work on mine.. also i am a little confused as to exactly where to place the tap/cardboard you mention...
please view the pics below of mine...am i right in assuming i remove the black cover and locate the shorting pins under this cover and cover them in black insulating tape?