Hello all, bought 2008 c-70 2 years ago and while driving with top down I got loud alarm with message "stop car immediately rooftop malfunction ". We put top up then down and it was fine. Now it is faulting more frequently. There seems to be no similarities to the roof position when alarm occurs. Can be driving it can happen upon starting when car has been fine for months. Top seems to be fine. Does anyone have any ideas? Can I disconnect alarm? Any advise would be greatly appreciated!