BMW 6 Series - Tech Talk E24,E63,E64,F12,F13
Would a 5/6 series owner try the following....
Switch to AUTO
Turn OFF aircon
Set both duel temperature controls to the coldest setting
Give it a moment and check to see if warm air is coming out of the lower footwell vents.
The outside temperature needs to be about +5 to +10 degrees.
The...