GT Drivers Window Not working - motor okay
So...this week's fault with the Italian Supercar as my neighbour calls it.
About a week ago I went to a drivethrough to get a coffee and the drivers window wouldn't raise as I drove away. I tried the soft reset and the window rose about 3 inches but no more. Further experiments failed including a battery disconnect (although only for 30 secs rather than 15 mins) didn't resolve the problem so I had to drive home on the motorway in the rain with the window wide open!!!
Tried a new alfa specialist for this one and they stripped the door and attached a multimeter to a few things. They tried raising the window by sticking a probe attached to the battery in one of the plugs inside the door card and hey-presto the window went up - ergo the motor / regulator is fine.
After some suggestions about the body computer unit under the dash the eventual diagnosis was that the control panel in the drivers armrest must be faulty and would need to be replaced (£170 for the part plus labour to calibrate it - fitting is easy). However the mirrors and the passenger window work fine from the control panel and the diagnosis seemed to be based upon the fact that they had the same problem with another car - not that a specific port on the control panel output had failed.
Does anyone have any other suggestions before I part with any more hard earned - the diagnosis has already cost some labour time? I keep reading about window nodes but cant determine what they actually are. Is it another word for the contol unit or something else?
Another thread about a 156 referred to relays inside the glove box - might the GT have the same?
Thanks in anticipation.