All of them. have a 645 convertible and a few problems with it. And the battery (90 AH) was always empty after a day of service, so that I built a new one in there. (110 AH) Now I did not have the (yet) to learn or code it. After 4 days the new battery was empty again – and had to bridge. Has it lasted again 2 days, again empty… Is that because of the “not learning/coding”? Or the 645er any childhood diseases concerning a consumer? One ne Well, had to bridge again yesterday, since the on-board monitor and radio no longer works. Do I assume, or do I hope it’s just a fuse… Unfortunately, I don’t have a manual and look for the fuses, can one of them help me? And, where are the fuses everywhere? Those in the trunk are not to be overlooked… does he also have in the glove box which? In advance VIELEN DANK for the help! Greeting, Mario