Taking off the driver door panel to get at the window regulator motor controller and window clip.
Sorry, shot this in wide screen, but somehow it's been imported as a squashed up 4:3.
My driver window died last summer and I've been searching the forums to find out how to fix it, since it's obviously a fault in the power going to the motor.
Garages simply tell you that the whole lot needs to be replaced -- costing about £300!
If the window has dropped, but the motor still works, the a £5 clip on ebay will fix it. If the motor is dead, chances are that it is the motor controller that is faulty. This is the Temic clip on electronic module. A substitute or reconditioned one costs from £20 to £50 on ebay depending on how much functionality you want to restore.
The daunting part is getting the door panel off and back on.
But it is not as hard as you might think.
I managed it, and was able to replace the Temic controller with a substitute from Peter Callum on eBay for £23. It doesn't do "one touch", but at least it stops when the window reaches the top and same when the window reaches the bottom.
You do need to secure it into the cavity somewhere out of the way of the falling and rising window.