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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 09-01-2007, 10:02 AM
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1canary 1canary is offline
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Angry Fuse Box Meltdown

I thought I was so clever replacing my passenger window motor today at last.
Window worked perfectly..........for a while.
Then came the smoke through the blower vent from the fuse box.
For some reason fuse #14 (front window lift) MELTED and fuses#43 and#35 (central locking) blew as well.
Now I have no central locking (so no alarm) and NO front window operation
There's more......it's saturday afternoon and I can't get an auto electrician until the middle of next week. One said on the phone it could be a problem with the window control unit or the ECU (but it hasn't rained for two weeks and I haven't just washed the car).
So WHY would the window control unit cause a melting of wires after a motor had been replaced????????????? or does anyone know of a different culprit.
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  #2  
Old 09-01-2007, 10:08 AM
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E36 Phantom E36 Phantom is offline
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Whoa....sounds like a serious short buddy. I'd imagine you misgrounded something or really got your wires tired. Leave the window fuse out, and replace your central locks fuses. They should work OK. If they blow again without any fuse being in #14, sounds like your comfort relay is really FUBAR. And of course check to see if somehow any wires at all from your window and central locks are touching. You have wires from your door lock since its all electronic, so if they somehow got crossed with your window motor....
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  #3  
Old 09-01-2007, 10:16 AM
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That sounds like a sh1tty afternoon. I hate electrical problems
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Old 09-01-2007, 10:35 AM
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Old 09-01-2007, 10:35 AM
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Location: Doncaster, England
 
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Quote:
Originally Posted by E36 Phantom View Post
Whoa....sounds like a serious short buddy. I'd imagine you misgrounded something or really got your wires tired. Leave the window fuse out, and replace your central locks fuses. They should work OK. If they blow again without any fuse being in #14, sounds like your comfort relay is really FUBAR. And of course check to see if somehow any wires at all from your window and central locks are touching. You have wires from your door lock since its all electronic, so if they somehow got crossed with your window motor....
Thanks for reply. It may have been that the window snagged the door lock wires when it opened and somehow shorted them, but I can't see how that would fry the other fuses.
I am now so concerned about potential damage to the wiring loom under the fuse box that I dare not start the car again until it's been checked by a sparky. May have to resort to trying it though if I can't get one out soon.
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