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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 04-09-2014, 09:02 PM
justinco justinco is offline
I detail cars
Location: Colorado
 
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Mein Auto: e46 ZHP sedan
Electrical gremlins, windows, radio, mirrors, dome light...

Hey all, first post, not new to BMW's or other forums just a first timer here

I just bought a 1994 325is for a track/autox project and I'm working on fixing the mechanical gremlins.

I have a few electrical problems, I will list them in the order of import....err annoyance:

1. Driver side window works intermittently
- I have cleaned switch contacts and swapped the driver/passenger switches. The problem stayed on the driver side (ie: didn't follow switch)

2. The radio will work for only a few minutes before the volume dies off to the point of no sound. It will then work on and off but mostly just not work.

3. Dome light was turning on and off the other night while driving, not complete on and off, but it would glow a little, then a little brighter, then full on, then die off, etc.

4. Power mirrors don't work at all, I can hear motors trying to do something but that's it.

Really I just care about the driver window working right now, the other stuff is not a huge deal.

Is the ZKE module responsible for any of this other stuff? I don't know if a fuse issue would make things intermittent, I would think it would work or not.

Thanks for any help!
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  #2  
Old 04-09-2014, 09:16 PM
Burning2nd Burning2nd is offline
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  #3  
Old 04-10-2014, 05:56 PM
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drivinfaster drivinfaster is online now
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Quote:
Originally Posted by justinco View Post
Hey all, first post, not new to BMW's or other forums just a first timer here

I just bought a 1994 325is for a track/autox project and I'm working on fixing the mechanical gremlins.

I have a few electrical problems, I will list them in the order of import....err annoyance:

1. Driver side window works intermittently
- I have cleaned switch contacts and swapped the driver/passenger switches. The problem stayed on the driver side (ie: didn't follow switch)

2. The radio will work for only a few minutes before the volume dies off to the point of no sound. It will then work on and off but mostly just not work.need a radio, most likely

3. Dome light was turning on and off the other night while driving, not complete on and off, but it would glow a little, then a little brighter, then full on, then die off, etc.sounds like the door switch, may also relate to the window issue, not sure.

4. Power mirrors don't work at all, I can hear motors trying to do something but that's it.
mot likely broken gears...get mirrors.
Really I just care about the driver window working right now, the other stuff is not a huge deal.

Is the ZKE module responsible for any of this other stuff? I don't know if a fuse issue would make things intermittent, I would think it would work or not. generally a fuse is blwon or not blown...the zke will usually cause issues with windows and sunroof, not mirrors or radio afaik

Thanks for any help!


replies in red


i'm sure others willchimein as well with their experiences.

welcome to the fest!!



df
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  #4  
Old 04-10-2014, 07:50 PM
justinco justinco is offline
I detail cars
Location: Colorado
 
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Mein Auto: e46 ZHP sedan
Thanks for the replies!

I checked the engine bay ground behind left headlight, cleaned it and re-attached. Also checked battery connections and ground, all looked good.

Checked fuses and I did not see any blown ones.

I am not sure what to check next for the driver side window, that is my main focus right now.

I'll check the door open/shut switch. Will coupe windows not work if the door is open?
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  #5  
Old 04-10-2014, 07:55 PM
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hornhospital hornhospital is offline
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Mein Auto: 1995 318is / 1993 325is
You cannot diagnose a blown fuse by appearance only. Test with a DMM for continuity.

Coupe windows will work regardless of whether the door is open or not.
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  #6  
Old 04-11-2014, 04:22 AM
drivinfaster's Avatar
drivinfaster drivinfaster is online now
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knew the windows would drop a tad when closing on the coupes, but figured there still may be an issue with the microswitch??



i usually check the fuses with a testlight, i find it much faster to run the row of fuses in a few seconds. key up, check for power, boom, done.




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  #7  
Old 04-11-2014, 01:01 PM
justinco justinco is offline
I detail cars
Location: Colorado
 
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Mein Auto: e46 ZHP sedan
So if it was a fuse issue, both of my windows would not work. However, my passenger window always works fine, only the driver side works intermittently (more often than not it doesn't work).

Sounds like a good trick with the testlight df!
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Old 04-11-2014, 01:21 PM
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If you end up needing mirror motors/complete mirror, Ill sell you some. I have an extra set.
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