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#1
08-05-2010, 09:59 PM
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What happened to my windows, I'm stumped!
Tonight as I was driving home in my 83 300D, all my windows stopped working. The pass side were already down and the driver's side were up. None of the switch were working, I assume it was a fuse but all the fuses are ok. I didn't spill anything. I'm stumped what it can be. It would be a rare coincidence that all 4 switches would go at the same time. Any thoughts? Thanks.
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85 300CD Signal Red/Tan sold 83 300D Manganese Brown 109K 97 E420 Midnight Blue 197K sold 98 BMW 328i Vert White 100K, sold 95 BMW 525i White 125K, sold 93 BMW 525iT Red 193K, sold 95 E320 Green Wagon 125K, sold 94 E320 White 127K, sold 85 300SD 156K Grey (Annie), sold 84 300D Lapis Blue 170K (Judy), sold 99 ML 320 Black (lease), 1998 C230 White (lease) 00 Honda S2000 Red (lease) 86 Mercedes 300E (sold) 84 Porsche 911 Red (sold), 1965 Porsche 911 White (sold) 
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#2
08-06-2010, 01:06 AM
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Answer
Possible answer, picture attached.
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#3
08-06-2010, 10:55 AM
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Quote:
Window relays are behind the instrument cluster.
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg
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#4
08-06-2010, 11:02 AM
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Quote:
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85 300CD Signal Red/Tan sold 83 300D Manganese Brown 109K 97 E420 Midnight Blue 197K sold 98 BMW 328i Vert White 100K, sold 95 BMW 525i White 125K, sold 93 BMW 525iT Red 193K, sold 95 E320 Green Wagon 125K, sold 94 E320 White 127K, sold 85 300SD 156K Grey (Annie), sold 84 300D Lapis Blue 170K (Judy), sold 99 ML 320 Black (lease), 1998 C230 White (lease) 00 Honda S2000 Red (lease) 86 Mercedes 300E (sold) 84 Porsche 911 Red (sold), 1965 Porsche 911 White (sold)
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#5
08-06-2010, 11:54 AM
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Solved!
Well I checked the fuses and pulled the switches and yes, they did receive power. Then I check all light switches, sunroof, warning, etc. and found out that the turn signals were out. I looked at the fuse which looked good but when I took it out, the top fell off! In fuse position #12 not only does it fuse the turn signals but it fuses the window relay! Thank goodness, I almost ordered 2 relays from the dealer for $60. It was killing me with the windows up and my a/c out in this freakin' hot weather.
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85 300CD Signal Red/Tan sold 83 300D Manganese Brown 109K 97 E420 Midnight Blue 197K sold 98 BMW 328i Vert White 100K, sold 95 BMW 525i White 125K, sold 93 BMW 525iT Red 193K, sold 95 E320 Green Wagon 125K, sold 94 E320 White 127K, sold 85 300SD 156K Grey (Annie), sold 84 300D Lapis Blue 170K (Judy), sold 99 ML 320 Black (lease), 1998 C230 White (lease) 00 Honda S2000 Red (lease) 86 Mercedes 300E (sold) 84 Porsche 911 Red (sold), 1965 Porsche 911 White (sold) Last edited by edge; 08-07-2010 at 01:42 AM.
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#6
08-06-2010, 12:47 PM
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i don't know how, but those cheezy fuses get microscopic hairline cracks in em and you got to poke at em to find out their bad. why did they continue to use those lousy fuses for so long?
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1984 300TD "MAX" 303K+ still going... fast '70 Chevelle 200k+ home built Shovelhead chopper
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#7
08-06-2010, 10:46 PM
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This happened to me recently - yes, the window fuse looked good but fell apart when I removed it.
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Charlie --------------------------- '66 VW 1300 96K miles '97 E300D 239K miles '85 300D 203K miles (sold Sep 2012) 
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#8
08-07-2010, 01:40 AM
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I believe the window motors use two separate fuses but the power window relay uses another, separate fuse that also powers the turn signals. That is the one that failed. Usually it's one of the other fuses and then two windows (one front, one rear, diagonally) won't work.
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 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#9
08-07-2010, 02:23 PM
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One of the first things I did to my 300D was to replace all the mish mash of fuses the PO had in there. $9 from ebay as I remember and I have extra fuses too. All are now copper.
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1985 300D 198K sold 1982 300D 202K 1989 300E 125K 1992 940T "If you dont have time to do it safely, you dont have time to do it" "The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."
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