Rear window switches not working
07-03-2010, 09:59 AM
#1
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Rear window switches not working
Noticed that both rear window switches have stopped working at the same time along with the center rear dome light(not bulbs). Was wondering if there is a fuse somewhere or if this could be a wiring problem. I did have a puddle of water in the back seat floor a few years ago due to a clogged drain under the ecu, maybe wire corrosion? But again not sure where the wires run? Thanks for the help!
07-03-2010, 03:02 PM
#3
AudiWorld Super User
yeah definitely check that lockout on the drivers door .. mine is busted and rear ones wont work unless i hold the button down . pretty mickey mouse switch . i am going to jumer it when I get around to it..
07-04-2010, 11:41 PM
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My car has the same problem, took the window switch apart and the culprit is the lockout switch...specifically a tiny plastic tab that holds the switch in the down position. I'm going to try and repair it but it looks like I'm buying a new switch.
Here are some pics for reference:
Window Switch
Lock-out close up
Circuit board(small metal pin between red & yellow lights locks into tab)
Broken tab in center of white plastic contact assembly
The metal pin slides down the channel and gets directed to the tab that should be in the center of the channel, mine is broken so it is pushed against the top left edge.
I'll report back if I'm able to repair this or if I have to order a new switch.
Here are some pics for reference:
Window Switch
Lock-out close up
Circuit board(small metal pin between red & yellow lights locks into tab)
Broken tab in center of white plastic contact assembly
The metal pin slides down the channel and gets directed to the tab that should be in the center of the channel, mine is broken so it is pushed against the top left edge.
I'll report back if I'm able to repair this or if I have to order a new switch.
Last edited by sqplus; 07-04-2010 at 11:57 PM.
07-06-2010, 03:12 AM
#5
07-06-2010, 04:47 AM
#6
AudiWorld Member
Hey Joe
Like everyone said above, definitely the lockout switch.
I bought a new unit off eBay for around $30. Came form Hong Kong, but it was a genuine part. Here's one I found:
http://cgi.ebay.com/ebaymotors/Audi-...Q5fAccessories
Install takes about 3 min.
Cheers
Massboykie
Like everyone said above, definitely the lockout switch.
I bought a new unit off eBay for around $30. Came form Hong Kong, but it was a genuine part. Here's one I found:
http://cgi.ebay.com/ebaymotors/Audi-...Q5fAccessories
Install takes about 3 min.
Cheers
Massboykie
07-06-2010, 05:15 AM
#7
AudiWorld Super User
Same here...HongKong FTW!
One thing, the trim piece that holds the switches is easily damaged and doesn't want to stay in...the little **** get broken off...they weren't too robust in the first place!
So I used a couple drops (DROPS!!!) of gorilla glue (gotta love that stuff but watch out for expansion/foaming as it hardens!) and a bar clamp with rubber tips to hold it down overnight...Wala!
Mine is 10 years old and 140+K miles....if I have to replace it in another 10 years and 140K miles I'll be happy.
One thing, the trim piece that holds the switches is easily damaged and doesn't want to stay in...the little **** get broken off...they weren't too robust in the first place!
So I used a couple drops (DROPS!!!) of gorilla glue (gotta love that stuff but watch out for expansion/foaming as it hardens!) and a bar clamp with rubber tips to hold it down overnight...Wala!
Mine is 10 years old and 140+K miles....if I have to replace it in another 10 years and 140K miles I'll be happy.
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07-06-2010, 09:27 AM
#8
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Same problem here.. but I modified a $3 Radioshack switch and installed it in the place of the original switch inside the module... From the outside the module looks absolutely original... the switch is completely inside the module and covered by the original lockout switch cover
07-08-2010, 04:51 AM
#9
AudiWorld Member
Same problem here.. but I modified a $3 Radioshack switch and installed it in the place of the original switch inside the module... From the outside the module looks absolutely original... the switch is completely inside the module and covered by the original lockout switch cover
10-11-2011, 05:21 AM
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(Sorry about my English I am Hungarian) My car has the same problem.I am an car electrician. I took the window switch apart. The problem is if you leave the door open the moisture damaging the printed circuit board. The copper is water sensitive. 
So under the child lock-out button the water can enter. But it does not dry. Because the small gap between the switch and the printed circuit board. If it happened probably you can notice the green copper rust (Or not because that is under the switch). The water eat the wires on the printed circuit board. I tried remove the switch. But I could not do without damage the switch. The plastic of the switch is melted a little bit. And the metal pieces alignment is moved. But now i could see the problem. And it is fixable by 2 wires. You have reconnect these pads by wires.
So under the child lock-out button the water can enter. But it does not dry. Because the small gap between the switch and the printed circuit board. If it happened probably you can notice the green copper rust (Or not because that is under the switch). The water eat the wires on the printed circuit board. I tried remove the switch. But I could not do without damage the switch. The plastic of the switch is melted a little bit. And the metal pieces alignment is moved. But now i could see the problem. And it is fixable by 2 wires. You have reconnect these pads by wires.