Servus! Now for the second time after heavy rain/high humidity under the carport it showed me the message “distance warning defective …” something at the engine start. The message disappears however within <100ms and therefore I can not even read completely. Also the "Check" button shows no stored error and all distance warning works as they should. I sent my wife around the car extra. Error is directed almost with a blink of itself ^^ How can I find out now , which of the warners triggers the problem? Should be easy to fix if it only happens at humidity from time to time.