Update on this - I don't think it's about the servo - I thightened/checked all the srews I could get to and lubricated some joints ( the one for wheel and break too) and after the change to summer wheels the squeeling got even worse.
With it gotten worse i could test the squeeling easier.
Now I see the squeeling depends on wheel turning and on the break pressing too.
On the wheel it squeels more on turning to the left and often stops on turning to the right.
On the break it starts on slight break press and stopa on hard break press.
Should I change the break pads? They seem still fine to me (even after 130k km)
Or should I just lubricate the break calipers and the pad holders?
Btw. The mechanic said he can hear some strange sounds from serpentine belt and said I should change 2 rollers and the tensioner.
I thought of changing pnly the belt as I read here pn forum some guy never changed nor the belt nor the tensioners with roller even after (I think) more than 250k km.
The guy at the service said it takes 2 hours and I think it takes much less time.
