Servus together, now it’s me too. For a few days ACC defect permanent error in the MFA. Have a Phaeton V10 year 2007 for about 1.5 years. The first year no problems with the ACC. After a year then sporadic. Often when the car was washing, it rained heavily or I have ranked longer with the car (frequently changing the driving stages). For about a week now the permanent error is present. It appears immediately when I start the car. Would like to change try to find the error myself, or at least narrow it down, but what should I start with? Maybe I can post someone a “to-do checklist” with what to do. I don’t have a diagnostic device at hand myself. I would be very grateful about some tips! MfG Benjamin