Hello, my C70 II had a roof flaw and lt workshop was the control unit defective. After researching and thinking because I really liked the C70 I had it changed at Volvo, including everything that belongs to it (software set up, adjustment, etc.) Now after I picked it up I opened the roof 4x in 2weeks and then message trunk not closed, it was checked but everything has to be inside in top opening position the cover below and the trunk m was closed. Then when pressing the roof opening again the windows drove down 2 cm and there were roof defects… workshop. I did this and in the workshop the error was understandable. Error memory gave no information where the problem lies. Fzg then stood for a few days with Volvo and despite this error nothing was to be found. In the workshop it was e.g. when it was open no more to… Then without reason it went back in the workshop and there the roof was opened x times and closed sen. LT. Volvo direct demand of the dealer – it could be the main power connection to the control unit. It should not be the same error and the change of the control unit would have been necessary. Since it worked nothing was done and… I picked it up again after 3 times opening within 2 weeks…. The error is back. Does anyone have an idea or tip? I’m concerned that it works – and after the not insignificant costs I find the result something However, I’m not satisfied with what it costs to pay for the error – that’s why you give the Fzg to the dealer of the manufacturer. My suspicion was in the roof contacts because I had that with the beeping when crossing a floor shaft before the workshop visits, this was solved by pressing the roof closing button. Now I give the Fzg back to Volvo, I am grateful for every tip that helps. Ultimately it is a technical problem. I took the new control unit with me. I noticed the error in connection with higher outside temperature – but that can also be related to the fact that you usually try to open the roof when it is warmer.