Hello, in advance, I looked for such an ACC error here in the forum, but found nothing suitable in the execution. Have a GP1 BJ2008 with Frontassist (EZ08/2007 so one of the first) with a strange ACC error. Engine restart everything OK, go off, ACC on and up to the first vehicle in front of me, then immediately ACC error. Tempomat does not work, Frontassist does not work. After engine restart everything OK again until I activate ACC and sometimes meet a vehicle even without a vehicle in front of me, then again ACC error just like that. The error is not always there, but about 80%. Sometimes everything works as it should. Now comes the strange thing: “Display shows ACC error, but error memory is empty???????” Does anyone have an idea what it might be? Greeting Andreas