2003 BMW Z4 Drivers window

B

Bill Dixon

New member
Hello my wife's BMW z4 drivers window wont roll up, It goes down in both positions (up will go down) I took it to a bmw service garage and he hooked up a computer to it and rolled the window up and down with the computer, so he said its not the window motor, its the window switch, so I bought another switch and installed it, and it does the same thing? any ideas?
 
My wife accidently rolled the window down a little and I had to take it back to have him hook it back up to his lap top computer and he rolled it back up?
 
Bill Dixon said:
My wife accidently rolled the window down a little and I had to take it back to have him hook it back up to his lap top computer and he rolled it back up?
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If it's not the switch then it could be the wiring, can you check for voltage at the switch connector?
Rob
 
Probably a broken wire in the door to bodywork area, switch operates the relay, hooking it up to diagnostics allows the relay to be operated without using the switch.

Mike
 
I took it to bmw guy, he hooked it up to his computer and rolled the window up and down with his computer, so would it still be a broken wire?
 
Bill Dixon said:
I took it to bmw guy, he hooked it up to his computer and rolled the window up and down with his computer, so would it still be a broken wire?
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It could be Bill, as already mentioned the dealers machine can control the window by directly operating the controlling relay up/down.
When you try the window, the relay is operated via the door switch. I would disconnect these wires and mega/continuity test them to find the damaged conductor :thumbsup:
Rob
 
raymond.harper said:
Have you tried windows reset ?
http://www.zpost.com/forums/showthread.php?t=62834
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That should only re-teach auto up/down, the op has a complete lack of up movement which is something different altogether :thumbsup:
Rob
 
As I said, broken wire or faulty switch. The windows aren't can-bus, so have different switch circuits for up and down.

Mike
 
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