NAP1947

The internal components of the external mirrors have severely corroded causing very bad paint marks and lifting where the mirrors touch the door skin. The mechanisms no longer work properly.
Has anyone else experienced this problem?
What was done to fix it?
I am we'll out of warranty and apparently the extended we purchased does not cover damage caused by water!
Apparently all newer ES350s have the mechanisms coated to prevent this problem, the rest seem to be left out in the cold.
Thanks for any input.
Norm