Hello there.
I have introduced myself yesterday.
Stated then I was joining the Forum looking for some assistance, as my 3200 is starting to show age.
I have found here one of the answers I was going to ask, so thanks to everyone. The problem we deal with here happens also to my wife´s E46, and is well known to me in the 3200/4200/GS family, so I am always very careful when touching the related switches or controls.
My answer has always been to buy the part, but on this occasion, having to do with the heater control knob, same policy seems not possible, so here I am.
I believe I have understood the procedure, just wonder if I will be brave enough to pull out the knobs using a plier.
I just bought online the spray (Thanks for the picture and the link), in transparent color, hoping it will be a matt finish, rather than gloss.