Now I’m on it with error message, Hello and welcome, first km the message sporadically, then only if C4 had warmed up after a cool night while driving. Then she was away for a few days and now the error is immediately there, when starting and stays there. In between it beeps and in the display the error is reported. Under sitting already the plugs of both seats controlled. Nothing. Also airbag switch Airbag is deactivated, the error remains. Is there any information from former people who could help you? Thank you, Michele.