Windows don't roll up or down
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Joined: Jul 2004
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Windows don't roll up or down
I just got another W126 which I'm very pleased about. This one has an issue with the windows. There is power going to the window switch and the motor works fine, but when you press the switch nothing happens. This is the case with 3 out of the four door windows. Anyone ever had this happen. Could it be a relay or something. I checked the fuses and they are fine.
Super Member
Joined: Jun 2003
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From: Middlefield, CT
1994 E320
There is not much to the window electrics. The motor might be burned out. I don't think it is the regulator, because from what you are saying, the motor does not even budge or make sound.
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Joined: Jun 2004
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From: Canada
1985 380SE
I'm not sure I understand your problem. How do you know "the motor works fine" (motors? 3 out of 4 don't work?) if the windows don't move? Which window does work? There are 2 little buttons on the consol switches that cut power to the rears, as a safety thing. Are they in or out?
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Originally Posted by donbryce
I'm not sure I understand your problem. How do you know "the motor works fine" (motors? 3 out of 4 don't work?) if the windows don't move? Which window does work? There are 2 little buttons on the consol switches that cut power to the rears, as a safety thing. Are they in or out?
Thread Starter
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Here she is!!
I really haven't been able to figure this out. Does anyone know what's going on with these windows.
First day home. Looks like crap cause she hasn't been cleaned in almost a year. Bought her from the police impound.
First day home. Looks like crap cause she hasn't been cleaned in almost a year. Bought her from the police impound.
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Newbie
Joined: Jul 2004
Posts: 5
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From: United Kingdom
W126 500SEC and 560SEL
Hi
If the car has been stood a while, water may have leaked into the door rusting the the strip of metal that 'grips' the window.
Carefully remove the door trim and inspect the mechanism.
The window on my 500SEC is held in three places - two adjustable 'grips' (for want of a better word) which slid up and down, then the window winder mechansim itself.
There is a metal sleeve with a rubber strip which bolts to the top of the scissor action of the window winder mech. This rusts and doesnt push / pull the window upand down.
repair/ replace/ service this area on each door (most likely just needs regreasing) and you windows should wind once more.
I hope I've explained things well enough!
If the car has been stood a while, water may have leaked into the door rusting the the strip of metal that 'grips' the window.
Carefully remove the door trim and inspect the mechanism.
The window on my 500SEC is held in three places - two adjustable 'grips' (for want of a better word) which slid up and down, then the window winder mechansim itself.
There is a metal sleeve with a rubber strip which bolts to the top of the scissor action of the window winder mech. This rusts and doesnt push / pull the window upand down.
repair/ replace/ service this area on each door (most likely just needs regreasing) and you windows should wind once more.
I hope I've explained things well enough!
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Junior Member
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Actually I can get the window to function properly with an outside source for power. What I do is spice into the wires to the motor and give it power. When I do this the window functions properly. I think I have maybe boiled it down to the window switches themselves. The only window switch that works is the rear passenger window from the driver's seat. If you press it from the rear it won't work. I might just try to replace some switches and see what happens.
Thread Starter
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Thanks for the help those that gave me feedback. You all where correct in some way or another. I managed to get the rears working perfectly now. THe fronts need motors. I'm gonna get them and hopefully put them in next weekend. can't wait to drive the baby around!!
Newbie
Joined: Aug 2004
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RE window switches
You are correct to figure out it is the switches. I know you think," 3 of 4 switches bad?" but yes it happens. If the wires bring power to the switch and the wires from the switch don't have power, it's the switch. Especially since you tested the motors with another power source and they worked. I have not tried it on an MB but I have taken switches apart on other makes and cleaned the contacts and regained use of the switches. Try one and see what happens. Good luck.
