I have 2012 L&K panoramic sun roof no issues until 2022 after heavy snow , being away for the weekend went to open car with key fob , roof opened for no apparent reason , not the long press that opens all windows and roof .The car had a couple of inches of water in every footwell. Bailed it out manually closed sun roof ,checked roof drains rear were ok front both sides were kinked almost flat where they attached to rubber grommet drain outlet removed plugs from sunroof an blind switch removed fuses .Took car to vinyl wrapping company had a 2 inch vinyl strip covering all sunroof seals .Still have water ingress with heavy rain coming through passenger side just above bonnet release lever Yet to solve this .also happened to my friends ,Toureg pan roof .