That side panel did come out and I had to disconnect the airbag lock connected to it but no access to top of vent duct unfortunately. Then I got impatient and took a screwdriver to the binnacle surround and off it popped, revealing three torx screws. Popped out the cluster and there it was, sitting all smug and flashing it's LED at me.
Apologies for the wrong orientations
There appears to be a populated sim slot but no obvious removal access and I can't break it open as that'll void the warranty
I'm glad I got it out, though I was going to pull the fuse anyway.
But I've overdone it today and need some extended rest. I'll dissect the box another time.