doors shut windows fail to respond?

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smarty

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hi guys! weird problem with the windows on the motor, 420sel, worked fine before but after washing the car, they fail to respond unless the doors or door is open! merc garage mentioned a comfort diode? im assuming they mean a relay the swiches work, the motors work, but when you shut the drivers door, nada! zip! nowt! any ideas anyone?
 

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This sounds like the switch in the B pillar,, there is a comfort diode that can blow as well
 
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smarty

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thanks, do you mean the switch in the door pillar the one associated with the interior lights, and this diode, is this like a relay and found in the fuse box, and is it sometimes called a window regulator?
 
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new member, still getting used to the site...
the switch ? the one on the door pillar, the one associated with the interior lights, and also this diode, is it in the fuse box and possibly also refered to as a window regulator, thats what my local dealer reckons?
 

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I think that the comfort thing is in the front fuse box. the actual comfort pack is normally under the rear seat

I know that the switch in the pillars operates the doors when open, not sure if it is a change over type.

These things take very much searching,,I have the 124 printed off and I will try and check to see if the 126 is the same
 
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thanks television,
most helpfull, that diode must be the window regulator, sounds logical, ill let you know how it goes.
 

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Let me have an Email address please, eithe put it in your profile or pop it up here for a few mins
 

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That is the circuit of the system.

Go back and edit out your address
 

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I was right, the actual comfort diode is under the bonnet up front in the fuse box
 

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hello just check that none of the fuses are corroded! had this before on a 124 the windows would only work with doors open! may not be but worth a look!
 
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yes you were! they now call it the window regulator, 1990 onwards, the information you supplied was excellent thank you Malcolm, much appreciated
 

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yes you were! they now call it the window regulator, 1990 onwards, the information you supplied was excellent thank you Malcolm, much appreciated

I think that you should be OK with that info,,its hard to get hold of these days, and the electrics are time consuming
 
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an update Malcolm, today after the storms i started the car no problem, the rain poured down the screen, tried the wipers, "nothing" immediately thought a fuse, checked the box no problem with any of them, but checking the manual fuse No 8 was the wipers, windows left and right, horn and comfort ciruit? although the fuse was intact i removed it and simply wiped the ends, replaced it and entered the car i tried the horn,fine i tried the wipers, success! and i thought try the windows? they worked fine!!, amazing, ive bought that relay/diode £35, ill keep it in reserve im pretty sure ill need it eventually. thanks for your help Malcolm..
 

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