i have just done a scan on my girlfriends Tdi 130 mk iv golf because the airbag light keeps staying on. I get the error code 00655 - Seat Belt Tensioner Igniter Passenger Side (N154) . What exactly is the seat belt tensioner?? I was under the inpression it was a device under the seat that snaps the seat belt tight in the event of a crash. i have the R32 seats in the golf but when looking at the seat belts on them they dont seem to have any wires or anything electrical on them and dont look like they would pull tight in a crash. Anybody shed any light on the scene? Thanks in advance.