Hi All,

My driver's side electric window has suddenly stopped working - showed no signs of slowness or heaviness, just stopped working. Fortunately whilst the window was closed.

I have checked the switch by swapping the left and right side wiring over, and the switch operates the passenger side window just fine. So it's not the switch.

Is there anything else obvious to check before I go and fit a replacement motor? For example, somewhere where the wiring might get caught/cut/chafed commonly?

Cheers,
Steve

Check the voltages at the plug the switch connects too. and then again at the plug where the motor is. If there is a break it'll let you know roughly where it is and if there is 12V getting all the way to the motor you know the motor is broken

If the voltages are ok (also check when the switch is pressed that the voltage isn't dropping significantly, the lights should dim a little) then the gearbox/motor can be overhauled fairly easily.

Often is it just the pinion/bearing on the gearbox that has seized, although this might be normally be indicated by slowing first. Take it off the motor and work it loose with WD40. Pack the gearbox with grease after. If the gears wobble in the gearbox you need a new unit (gearbox or complete unit).

On the motor inspect the commutator contacts and brushes, rub down gently with fine wet&dry until the surface is shiny. Brushes can usually be renewed, but I've never needed to, usually the contacts surfaces are just burnt from overheating.

You can buy new complete units from GSF, but £100+.

Well. we've had the door apart, and it seems that it's the motor that's knackered. It was seized, but we freed it up and then it seized again. So I need a new motor basically.

Will any of these (meant for 240s or 440s) do the job at all? Anyone know?

http://tinyurl.com/6jdsutb

Cheers,
Steve

if you grind the siezing shaft of the motor a few thou thinner then use graphite grease to lubricate it, it should last a good few years, thats what i'd do.