W169 A150 - left automatic window makes a noise but no longer goes up/down

[anyweb]

hi,
first of all the buttons (drivers side) for controlling the front left, front right windows snapped off for the right window, which means that you can only open the passenger window using the button on the passenger door,
I bought a replacement button from ebay but it was as plasticy as they come and broke within weeks of being put back...

but a more serious issue has now developed and i'm not sure what the cause is, when driving the a150 yesterday i tried to open the drivers side window (i'm in sweden, so that's the LEFT front window) and i heard what sounded like a pathetic buzz but nothing happened, no matter how i pressed the button nothing happened, so i was forced to open the passenger side window to let air in (ac is dead...)

later on in the drive the window button DID respond i could raise/lower the window just fine, but after closing it and trying to re-open, again the pathetic electrical buzz but no action

the motor that opens/closes it sounded fine when it did work so what could be the issue here, any ideas ?

 

[anyweb]

so i fixed this today, it was a broken wire in the rubber hose that 'protects' the wires from the car into the door, I had to remove the door card, then disconnect everything, and locate the busted wire,
lofty shows the same problem more or less here http://www.aclassinfo.co.uk/page.37.169.htm