It should adjust automatically. Do a brief test: while driving, change your currently set temperature 5-6 degrees higher for both driver and passenger. The fan speed should decrease automatically and almost immediately. If that doesn't happen, take it to service.
Originally Posted by zznalg
I do know you have the option to fine-tune/adjust the fan speed. But, can the system automatically adjust fan speed or are you required to adjust it manually?
2011 E92 335i 6MT ZSP ZCW (ED May 17th 2010)
2013 118d BMWNA Special Edition. Black on black cloth (yay!), 5 door hatchback, 140hp diesel. Special edition items
: factory debadge| "VW", "Golf" and "TDI" badges factory applied | MT | Standard go flat tires | Spare tire (yay!) | No moonroof (yay!) .