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Old 04-10-2012, 10:51 AM   #1
bowtie2bimmer
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A/C Switch not working? Fix it for free

Has your a/c switch not been working properly? Have you had to fiddle with it to get it to stay on? Does it cut out while driving?

All these were happening to me and i figured I would try and fix it before buying a new switch. This is really simple and I'm sure most of you already know how to do this (there may even be another write up, I didn't look)

Here is the culprit:


To get to the inside, all you have to do is take a small flat head screwdriver and pop the out cover around the tabs on the side


When you take it apart you'll see the two bulbs, springs and a little grey plastic tab between them. The little tab fell out as I was pulling it apart so make sure you don't lose it.


You can tell by looking at the connections inside and out that there is a far bit of corrosion. Its 25 years old so that's to be expected.



Take the springs off and push the lights through the bottom, this will give you more room to get in there to clean the leads. I used my handy dandy dremel for the job


After about 5 minutes of scrubbing away, you can clearly see the difference


Put the switych back together and reinstall everything. Now it should work with ease. Before i had to like press it several times to get good contact, not now, works flawlessly with one push


Hope this helps some of the broke e30 owners. You can do this to any of the switches they you are having problems with.
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Old 08-11-2012, 05:24 AM   #2
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I was actually going to do this today when I came across this thread. Thanks for the write up.
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Old 08-13-2012, 09:06 AM   #3
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Does this work on the air recirculation button too? I think the springs on mine broke cause it won't stay pushed in.
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Old 08-13-2012, 09:37 AM   #4
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Nice write up !
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Old 08-13-2012, 10:00 AM   #5
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Useful thread.

If only fixing my AC was this easy.
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Old 08-13-2012, 12:08 PM   #6
bowtie2bimmer
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Quote:
Originally Posted by DisgustipatedAP1 View Post
Does this work on the air recirculation button too? I think the springs on mine broke cause it won't stay pushed in.

Ya, same switch housing so you kinds do both anyway.
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Old 08-13-2012, 05:16 PM   #7
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Thanks for sharing.
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Old 08-13-2012, 06:39 PM   #8
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If your button won't stay pushed in, then your fix probably won't be this easy. There is a tiny white plastic tab that breaks off, and gets lost. So unless you are a glue ninja, you're looking at a replacement switch.
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Old 08-13-2012, 06:43 PM   #9
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Check out the pictures here:

http://www.r3vlimited.com/board/showthread.php?t=250260
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Old 08-13-2012, 07:18 PM   #10
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Sweeeet

You certainly don't need a new camera either, nice photos.

You do need a steady hand, some micro-fine brushes and some white paint to tidy up the markings now!
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Old 08-13-2012, 08:18 PM   #11
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Quote:
Originally Posted by astiv43 View Post
If your button won't stay pushed in, then your fix probably won't be this easy. There is a tiny white plastic tab that breaks off, and gets lost. So unless you are a glue ninja, you're looking at a replacement switch.
Pick-a-part time!!
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Old 08-23-2012, 10:35 AM   #12
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I have a spare switch with perfect white icons that I'm cleaning and selling. Looking for a defrost switch with perfect white icon and a headlight switch knob with perfect white icon if anyone has one they want to sell or trade.
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Old 09-03-2012, 06:13 PM   #13
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If you don't have a dremel handy, try CRC electrical contact cleaner. Works well for these kinds of repairs.
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Old 01-19-2017, 07:27 AM   #14
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Bumping an old thread. My AC button doesn't stay pushed on. The AC works, but I have to press the button many times for it to stick.

Only one of the photos in the original post works.
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Old 01-19-2017, 07:42 AM   #15
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Quote:
Originally Posted by mike.bmw View Post
Bumping an old thread. My AC button doesn't stay pushed on. The AC works, but I have to press the button many times for it to stick.

Only one of the photos in the original post works.
Try now. I fixed the photo links

Sent from my SM-G920V using Tapatalk
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