So I just got my S washed at a brushless car wash and brought her home. I noticed the windshield was still smudged probably from the original manufacturing chemicals on the interior windshield. So I grabbed some windex and a car drying towel. As I began to wipe the interior windshield my led screen started to freak out. The various menus were popping up and car needs service warning came up. This lasted a about 30 seconds and then went away. All seems ok now but was very scary. Thought I might have blown a fuse or circuit. Anyone else experience this? Any suggestions for what to use to clean the windshield? Thx!