...only if you ask BMW.
In another post , we talked about the coding for TMC etc., while the guy was working on programming my TMC etc., he mentioned the rear fog light. I told him that it is almost impossible, lots of work, cabling etc. etc.! He just laughed and said that all I need is the modified switch near the light switch and one update. That's it. According to him, all wires etc. are in place and they just didn't put the switch into it.
No, I haven't done it myself since the technical control here was complaining but completed my papers anyhow. So until 2012, I'm good to go.
But, again, the guy from car-coding.de said it can be done and he offered it...
Guess I'll have to look into that in 2012.