Walter745 Topic starter Hello Together, I also put the text here, because last year around this time exactly the same problem had a colleague with the 850er. I have an AEB LEONARDO175 from FRAGATEC from the Westerwald. on the last 200,000km the system ran absolutely without problems. However, the ECU had lost the setting in the first year after an empty battery. That was then adjusted by Mr. Frank from the Westerwald and everything was good. Mr. Frank from Questiontec doesn’t want to help me anymore, because he is retired. Does any of you have an address that can re-adjust something like this? I would like to add software and interface to make a backup of the settings. Does any of you have any experiences with it? Thank you very much Walter