I remember I had the same problem identifying the fuse, as it's not obvious. Yeah, I think it's something like SIR or some other 3-letter acronym. I'm pretty sure I posted it earlier in this thread when I found out which one it was..
So i got the airbag of and started to loosen the torx screw in the middle... I loosened it for a few turns then it started to round on me any tips on how to get it out, in a bit of a pickle i cant loosen or tighten it!