It's a huge thread about AC problems with the G30 line. I think this post explains things pretty well, though:
https://g30.bimmerpost.com/forums/sh...1395349&page=9
"I decided that I'd try and get a jump on the inevitable Vegas heat. I reached out to my Service writer and Service manager in hopes of them having received word from Munich with a solution. My primary complaint was extremely low flow from the entire right side of the center stack and the need to endlessly experiment with the HVAC settings.
I'm pleased to report that after a software update and removal of some "excessive foam" from the right supply plenum the A/C is flowing like my 2017 X5 and the 15 previous 7 series I've owned. Very happy to hit summer head on with greater than 50% of cabin airflow restored."
That SIB (from my earlier post) can be found on this page:
https://www.bimmerfest.com/forums/sh...t=HVAC&page=56
But you KNOW that BMW is going to blame your "new" HVAC controls.
