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Power Window Switch

>I understand that the windows on the 4 door models can be fully opened or
>closed automatically by tapping the window control switch but the 2 door
>models such as my 92 318IS do not have that function. Does anyone know why
.this is and is it possible just to replace the switch with the version from
>the 4 door to make it work the same?

Unfortunately the switches themselves have nothing to do with it; they simply 
close a circuit.  It's the car brains that determines what the stepper motors 
in the doors do from that moment on.

This said, my BMW dealer here in France installed a console switch for me in my 
new 328is coupe (we do not have the door lock/unlock button here in europe).  I 
had asked only for a lock-when-depressed button, but he went a step further and 
connected it to the same circuit as the driver side door lock (pin # 6 or 9, I 
believe) so that it works exactly as the key.  If I depress it briefly it will 
lock the doors (no deadbolting), and if I keep it depressed it will close the 
two main windows first, and then the sunroof and rear triangles (I ordered it 
with the power option).  Quite nice when you see a large cloud of diesel 
exhaust coming up and you wish to close the car quickly.  I also find it more 
practical to close my sunroof by holding down a button next to the shifter 
rather than up in the air by the rear-view mirror.  (For those of you who are 
interested I had them use a second ASC switch mounted where the driver-side 
seat heater switch would have been.  I replaced the pictogram with one I drew 
up with my computer, and it looks factory - without the risk of them drilling 
holes in my console!).

It however does not address your window-opening wish...

[email protected]
Paris, France
'96 328is coupe