My 135i is 2007/12 N54 MT CCC, so may be near your car spec, and not carrying out special modification.
I do not think that the difference in a function is brought about by the difference in stalk.
stalk which I got is 61319123041 and this is actually common to almost all E8 and E9 series.
The information which I have acquired about cruise control is the following.
http://www.bmw.com/com/en/insights/t...cruise_control
S540A Cruise control
S541A Active cruise control
S544A Dynamic cruise control
Since information is not displayed on kombi, it does not understand in detail, but it seems that my cruise is two steps, 1kph and 10kph.
But the rate control in a curve is not certain.
I do not know why your setup does not return, either.
In search of a 135i owner with other auto-cruise, I am going to acquire information.