I had the howling rear brakes, when reversing (parking), dealer cleaned stopped for a while but returned.
I upgraded to ss brakes and now no noise.
The steering noise could be dry top mounts due to cold weather - spray some wd40 on the bushes/mounts.
I had a slight creak from the top mounts after i installed the eibach pros, greased up now fine.
The brake noise is very annoying and loud, as of yet no cure, dealer informed me of this.