Moin in the round. I bought a used c320 today. 180tkm,normal traces of use I originally came from the E61 3.0d A corner. No gamebreaker mmn available. What has now been noticed in retrospect: Backup battery seems to be hi. Seller had the main battery changed. (…) Question, the decor in the steering wheel, is there anything new? Lock driver door can sometimes be opened without a key. What can this be about? Where exactly is the backup battery? Question en about questions… Thank you very much