Originally Posted by mtmcgavock
This allows you to have two phones paired to the car, so if you've got another phone you can set it as the second phone I believe. I've never tried it, but it shouldn't be selected.
Regarding screenshots, I managed to get one today. I would have done one sooner for you but only just got round to it, sorry. (This is paired with BMW X5 2012 model, i'd presume they are nearly the same iDrive)
Thanks! I guess i don't have to worry about it now that the message option is working =)