Which part number for this rear-demister button?

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Kalimsnor
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Post Wed Jul 01, 2020 6:37 am

Hi. Seems like I have a different rear-demister button compared to the ones I find online. The bottom part is a different color and it has different plugs. Does anyone know which part number it is?


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Ukhozi
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Post Wed Jul 01, 2020 2:03 pm

1986 325 cabrio is 61 31 1 376 03
E30 is 61 31 1 380 351

Use the EPC at this site. very simple to use. You would need to back up a bit as I have it for 1987 320i auto.

http://bmwfans.info/parts-catalog/E30-4 ... 987/browse

These switches are quite simple to strip and clean, I have done lots, especially window switches which, being horizontal, fill with dust and crap.
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Kalimsnor
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Post Wed Jul 01, 2020 7:17 pm

Ukhozi wrote:
Wed Jul 01, 2020 2:03 pm
1986 325 cabrio is 61 31 1 376 03
E30 is 61 31 1 380 351

Use the EPC at this site. very simple to use. You would need to back up a bit as I have it for 1987 320i auto.

http://bmwfans.info/parts-catalog/E30-4 ... 987/browse

These switches are quite simple to strip and clean, I have done lots, especially window switches which, being horizontal, fill with dust and crap.
Thanks! I looked around realoem.com (just found this today) and seems like it's 61311376413 actually. See https://www.realoem.com/bmw/enUS/showpa ... Id=61_0774
BristolE30
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Post Sat Jul 04, 2020 10:51 am

Does anyone’s rear de mister actually work? Mine looks like it’s trying but fails miserably
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Post Sat Jul 04, 2020 1:18 pm

You mean the switch works intermittently or the heating elements are mostly knackered? I had the latter problem and ended up getting new glass but there are repair kits for the elements.
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Bonymaenjack
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Post Sat Jul 04, 2020 1:53 pm

BristolE30 wrote:
Sat Jul 04, 2020 10:51 am
Does anyone’s rear de mister actually work? Mine looks like it’s trying but fails miserably
yep mine does , I know I've just been put and about and the rain is the miserable type that clings in a fine mist to everything (except my rear screen )
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Ukhozi
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Post Sat Jul 04, 2020 2:00 pm

Would help if you stated what year and model you have, so many versions of E30.
So we are to take it you have a late E30 325E?

Mine works but I have about 6 that need a touch of repair paint.
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biffer
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Post Sat Jul 04, 2020 11:08 pm

My screen is down to 2 working elements-all the rest have failed at their ends where they join the vertical strips.
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Post Mon Jul 06, 2020 8:25 am

BristolE30 wrote:
Sat Jul 04, 2020 10:51 am
Does anyone’s rear de mister actually work? Mine looks like it’s trying but fails miserably
Mine used to work before I broke the button! I took the button apart to see how it looked on the inside, but when I put it back together the button wouldn't stay pressed in. The spring was in the center. So now it stopped working
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Ukhozi
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Post Mon Jul 06, 2020 12:33 pm

Kalimsnor wrote:
Mon Jul 06, 2020 8:25 am
BristolE30 wrote:
Sat Jul 04, 2020 10:51 am
Does anyone’s rear de mister actually work? Mine looks like it’s trying but fails miserably
Mine used to work before I broke the button! I took the button apart to see how it looked on the inside, but when I put it back together the button wouldn't stay pressed in. The spring was in the center. So now it stopped working
I'll bet the little latching hook fell out.
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Post Sat Jul 11, 2020 9:59 am

Ukhozi wrote:
Mon Jul 06, 2020 12:33 pm
Kalimsnor wrote:
Mon Jul 06, 2020 8:25 am
BristolE30 wrote:
Sat Jul 04, 2020 10:51 am
Does anyone’s rear de mister actually work? Mine looks like it’s trying but fails miserably
Mine used to work before I broke the button! I took the button apart to see how it looked on the inside, but when I put it back together the button wouldn't stay pressed in. The spring was in the center. So now it stopped working
I'll bet the little latching hook fell out.
I'm going to assume you don't happen to have a screenshot of that hook laying around so I know what to look for next time I'm in my garage? :-D
Kalimsnor
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Post Sun Aug 23, 2020 11:01 am

I'm completely stuck on these things. I ordered an extra button which looked pretty much identical, turns out it was yet another one. The previous owner of my car also already had bought a new one (wrong one as well), so now I have three different buttons with different partnumbers. I took them all apart carefully (while they were still working), and I'm 100% sure nothing fell off. However, after taking them apart and directly putting them back together they simply won't stay toggled when you press them. They release directly.

Here's an album of the three buttons:

Note: the broken plastic at the "#1"-button is part of the plastic covering the small lamp inside the button.
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Brianmoooore
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Post Sun Aug 23, 2020 2:52 pm

Demister switch is 61 31 1 380 351
I've no idea why your switches won't stay in, and can't make out anything from the pics., but there are no single button E30 switches that don't latch.
The toggle/latching mechanism is fairly obvious when you have one apart, so you should be able to see if it' present or not, and, if it is, what's wrong with it.
When you take these switches apart, keep the buttons on top all the time, if you want to avoid small bits everywhere.
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Post Thu Sep 03, 2020 12:41 pm

Brianmoooore wrote:
Sun Aug 23, 2020 2:52 pm
The toggle/latching mechanism is fairly obvious when you have one apart, so you should be able to see if it' present or not, and, if it is, what's wrong with it.
When you take these switches apart, keep the buttons on top all the time, if you want to avoid small bits everywhere.
I'm starting to feel rather stupid, but by no means can I find a latching mechanism in either one of those three buttons. Not sure what I'm looking for but it's hard to believe all three of them lost their latching parts.
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Post Thu Sep 03, 2020 3:05 pm

The tabs on mine came off the glass but I found electrically conductive glue on the internet and stuck them back. I am left with one line of element not working and cannot see any break, so I presume it is a very small crack. Has anyone got a method of locating that? I have tried running the point of a circuit test along it without effect. My only other idea is to have someone inside holding a sheet of white paper against it while I examine it carefully with a magnifying glass, so has anyone got a patient wife I could borrow? I doubt mine would last 30 seconds.
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Post Tue Sep 08, 2020 7:53 am

ChrisHC wrote:
Thu Sep 03, 2020 3:05 pm
The tabs on mine came off the glass but I found electrically conductive glue on the internet and stuck them back.
Don't suppose you've got a link to the glue you bought have you?
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