Moin! I have a few ugly little stone strokes on the WSS, of course almost all in the immediate field of view repair is therefore not at the place, are all small craters, max. 2mm in diameter, without cracking or similar. Can I get problems with the next TÜV there ? Someone’s link to the hand where exactly is defined, when a WSS is to be exchanged ? Oh yes: Before someone comes with “let it do it, pay anyway the partial cascade “, workshops are only approached if must be absolutely! Thank you and greeting Sascha