If you open the heater climate control page on the touch screen you can adjust how fast the heater/Aircon fan runs in Auto.
At bottom of page touch options
This opens a new page with with a single icon in middle.
Touch it and it with change from normal to fast to soft.
I have mine in soft as it makes the fan quieter, I wearhearing aids and on normal it's loud.
Downside it takes a little longer to heat or cool cabin.
NOTE: if your system us running in AUTO mode and you change the fan speed on the main heating/Aircon page it goes to manual mode. Using my tip above it stays in AUTO mode.
