Dear Forum, in my 2009er (i.e. the first RNA 810 series) I got a restart under certain conditions. The error occurs under the following conditions: – With the RNA 810 a route is programmed without ignition and after the vehicle is switched on the return camera is needed immediately. After that the RNA restarts and I have to reprogram the route. It only restarts once. I have stored the following in the error memory: 01300 – Control unit for navigation with CD drive (J401) 004 – no signal/communication – sporadic Is then simply the CANBUS completely “full” ?