Squeal

Squeal like a ........

I've the same squeal from my drivers window, other 3 windows are fine.
Squeal starts when the window is down 1", and keeps getting louder until about halfway open, then is OK.

It does seem to have gotten worse over the last few weeks.

This car is starting to drive me nuts.

I don't like the 'clunk' when the windows fully open.
A 'soft' landing would be better.
Another black mark on BMW's engineering blotter.......

karlf wrote: I don't like the 'clunk' when the windows fully open. A 'soft' landing would be better. Another black mark on BMW's engineering blotter.......

I didn't get the squeal, but I did get the clunk & slow motion opening which happened for a couple of weeks before the clunk was followed by the more ominous sound of the glass falling to the bottom of the door!  (why do these sort of things happen just as you're starting a long motorway run?)

The two little X shaped white plastic jobbies that fit onto the bottom of the glass and connect to the motor arm via a ball joint seem to become brittle with age. The ball joint then cracks causing the window to become slightly misaligned - slow or squeaky running.

If this is your problem change BOTH of the plastic bits, I didn't..... but have had to now. While you've the glass out it's a good time to squirt some lubricant into the window runners too.

I had this on my 530. I replaced the rubber strips, both inner and outer at the top of the door frame that act as weather proofing for the window glass. They have a coating on them which wears off after time and causes the rubber to squeal against the glass as it moves downwards. Especially on hot days.

Hope this helps