Can the 'Max' setting be adjusted so both the fan and temperature go to max when the button is pressed to speed up defrosting / demisting?

Temp doesn't matter in climatronic, when you hit max the A/C operates and dries the air that hits the windscreen, until the engine is warm it would not blow hot anyway even if you choose max or 20'.

 

 I leave mine on auto all the time and just change the temp between 20' and 22' seems to work well.

Ok, makes sense. I'll leave mine on auto and give it a try Thank you.

I've never understood why the fan stops one notch short of full speed when the MAX / windscreen button is pressed.