Rear Window will not go up! It tries but immediately goes back down. 2007 328 Sedan

[SRQJules]

Please help diagnose:

The driver's side rear window will not go up. When I press the up button, it raises 1/2 inch then immediately goes back down. So there is power and can't be a fuse. The window was working fine until this acute problem manifested. I have tried resetting any anti pinch by holding the up button for 10 seconds then down for 10 and again and again until my finger hurt - I tried 30 seconds with no effect. I have disconnected the battery all to no effect.

How does the anti pinch feature work? Does it sense over-current of motor?

Thanks in advance for your assistance

[turbovrGTI]

window regulator probably...it usually has play or binding which is made worse by the seals at the bottom of the window opening so it causes anti trap. Theres a flow chart we use at the dealer which normally needs a regulator if it hasnt been replaced before...

[mystreba]

I had this same problem - it was a snagged cable. Try pulling up on the window as you press the switch - this may enable you to at least get the window closed.

I wrote up a DIY for removing the door panel.

http://forums.bimmerforums.com/forum...8#post23591468

You inspired me to spend some time today fixing my DIY. It was lame without photos. So I removed and replaced my panel, taking photos along the way to update the DIY.

[apskinner01]

My 2007 335i does the same on both rear windows if rolled down completely while driving. Soon as I turn the engine off, they roll right up.

[jrose7004]

More that likely the rear regulator needs to be replaced. I had to do one a couple of months ago. Fairly common problem.

[bighorns]

I had both regulators in the rear of my E90 replaced under warranty. When it came time to upgrade the car I went with an E92. Problem solved!