Quote:
Originally Posted by ruimpinho
Thank you very much for all the support. Yes, I have tried unsuccessfully to remove it. It looks like a previous owner for some reason hammered that ring around the wiper shaft.  But why would anyone do that? |
Well, that's why I have suggested RealOEM, because I doubt that this is just some kind of home-grown solution by the previous owner. It would be useful to know what BMW thinks the car left the factory with.
Also, I don't think that hammering has anything to do with this. How that nut/ring/collar looks indicates to me that it's supposed to be removable. In your case, probably it's just corroded on so thoroughly that it's seized.
And in the end, if you can't get the nut removed, you may have to buy new glass and new pivot mechanism. You might also take the thing to a shop that could possibly be more proficient at removing the seized nut But be prepared that they may break the glass and then you'd still need to buy new glass and the mechanism.
Or, just live without opening rear glass. Your choice.
Good luck! Let us know what you end up doing/finding.