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power windows 83 240D
83 240D
And next on my to do list is,,,,, ta da,,,, power windows. So far what I know is (not much) Two windows are inoperative. The front passenger, and the rear drivers side. no motor sounds that I can hear, and the rear window will not work with either switch. I will be into the doors to fix the vacuum elements, anyway, so i was wondering if there is a slick way to eliminate or point the finger at the offending component? It's a long drive to any parts house or boneyard. What say ye all? Jon j
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Jon J. 81 240D |
#2
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Check the fuses first, then check the switches. If you have power at the switches then take the switch apart and clean with brake clean which most likely will fix it, unless the window motors are bad which is unlikely.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
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Quote:
Mercedes wired the car so that one Fuse controls one Front Window and the Rear Window but on the opposite side. When this happend to me a visual check of the Fuse looked good. However, when I pulled the Fuse the tip of the Fues was burned off. The next most frequent cause is the Window Switch Contacts being burned inside of the switch. There is threads in the DIY section on how to clean the Switches. DIY Repair Links http://www.peachparts.com/shopforum/forumdisplay.php?f=82 http://www.peachparts.com/Wikka/DoItYourSelf
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84 300D, 82 Volvo 244Gl Diesel |
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Quote:
1. Fuses 2. Switches 3. Motors. Sometimes moisture can leak in and corrode the gears and motor mechanism. A good cleaning and lube with WD-40 or PB will get them working again (did all 4 in my SD this way) 4. wiring in the doors. The wiring in the "accordian" rubber boot in the doors can get stripped and brittle with age. Before hacking it all up, check for continuity from the switch to the motor using a multimeter.
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TC Current stable: - 2004 Mazda RALLYWANKEL - 2007 Saturn sky redline - 2004 Explorer...under surgery. Past: 135i, GTI, 300E, 300SD, 300SD, Stealth |
#5
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RANT :
I do not understand why MB was not smart enough to put some kind of manual emergency window crank in their cars... they had that feature for the moon roofs....
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html |
#6
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a fuse?
Quote:
And I was going to order a pair of switches. I think I'll hold off on that now Jon J
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Jon J. 81 240D |
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X2
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Codifex 1981 240D ChinaBlue (Got her running with a donor engine.) 1983 300DTurbo w/sunroof. 1984 300TD manual sunroof. (Electrical Gremlins) |
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Not the fuse
83 240D
I checked the fuse, there is power to both sides. I did remove them and clean the ends and the holder. Also switched the fuses with each other, no change. I noticed in the fuse box lid there is a relay for the windows. Could this be the gremlin, and if so where is the little bugger hiding? I have not ruled out power supply, because of the noted symptoms. Jon J
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Jon J. 81 240D |
#9
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Check for power at the switch.
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Codifex 1981 240D ChinaBlue (Got her running with a donor engine.) 1983 300DTurbo w/sunroof. 1984 300TD manual sunroof. (Electrical Gremlins) |
#10
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?????
Where do i test on the switch. I have no idea where the hot wire is as I have never had the switches out. also If I have power to the fuses does that mean the relay is OK?
Jon J
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Jon J. 81 240D |
#11
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No. But the fact that at least one window has power would so indicate.
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I'm confused
Quote:
Jon J
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Jon J. 81 240D |
#13
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Where the devil is it
I have been searching the posts trying to find the location for the window lift relay. So far it 's located,
1. In a box on the fender 2. Behind the instrument cluster 3. On the firewall above the brake booster. There seems to be either one or two. Is the relay ahead of the fuse or behind the fuse in the circuit? Does anyone know from PERSONAL experience where it is. 83 240D
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Jon J. 81 240D |
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The relay powers all the windows. If the relay was bad, no windows would operate.
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#15
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Which of the four window-related fuses are you calling "the" fuse? Relay actuation is fused, relay power is fused, and power from the relay to the window switches runs through a pair of fuses.
The single window relay is in front of the instrument cluster. (Also sometimes described as "behind" the instrument cluster.) Not much point in looking for it, though. Power to fuses a and b, combined with two windows that work, rules out the relay as the culprit. Last edited by tangofox007; 06-17-2011 at 01:37 AM. |
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