Originally Posted by vigalent
This feature has been around since the E9x ED models in the Uk.
The ASS is disabled at temperatures below 3C (32F)
My 2008 E90's ASS only enabled above 3c. In my F30 (320d ED) it still shut off at 1c in the cold snap we had a few weeks ago. Worked perfectly. Got a warning chime at 3c but ASS still enabled. Never had it coded.