I look after motor claims for a large well known insurer and over the last few years have started to see increasing problems with windscreens fitted by glass companies compared to cases where customers go back to manufactures. In fairness to the glass companies its now no longer a simple case of glass replacement as so many functions / driver aides/ "gadgets" can be linked to the screen.
In some cases its not just sensors for Auto lights/wipers/climate etc but can I believe include City Safe Braking systems that often need re calibrating if the screen is replaced.
Its a diffcult one because the price charged by manufactures to replace sceens is astronomic compared to the glass companies. I'm not an underwriter, but if everyone went back to the manufactures for screen replacement, premiums would no doubt be significantly increased