Got inspiration to do the mod to my 1M, and success!! Saved me a bunch of Euros. Took a while, but I took my time because I didn't want to break anything. I found that to properly remove all four stoppers, you have to pop the button out of the housing. Was a bit tricky. Maybe a bit more for me, as the plastic was cold.
One note if the mod doesn't work. The headlights have to be in position 1 or 3 for the rear fogs to come on. Confirmation is via the annunciation in the panel.
‘If it even looks like rain and you pretend to be Michael Schumacher in a 599 GTO, you’ll end up in a tree’ -Clarkson