Repeat winodow regulator failure - BMW Forum -

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post #1 of 2 (permalink) Old 01-15-2013, 05:14 PM Thread Starter
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Repeat winodow regulator failure

I have a customer with a 2003 330xi. I have been struggling with window regulators on this thing. When he brought this thing to me, he had replaced both front doors with aftermarket pieces. Those lasted 2 months. I replaced them with OE pieces (51337020659, 51337020660) they lasted a little longer, but the OEs have failed twice. I talked with the customer about it he said he could tell someone had replaced the regulators before he got in there the first time. The car doesn't show any signs of collision damage, with the regulators the windows go up and down smoothly, no binding. I sprayed a heavy film of silicone spray in the window runs the last time. I know these high failure units, but I would expect more than 2 or 3 months life from them. I feel like their is underlying issue I just haven't found it. Any help or insights from the group would be gratefuly appreciated.
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post #2 of 2 (permalink) Old 01-25-2013, 03:20 PM
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A while back I was having issues with one of my door handles staying out after opening in cold weather. I sprayed a little silicon on the mechanism and immediately blew a fuse. In googling the problem I found BMW service bulletins stating you should never use silicon spray. I wonder if that may be your issue.
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