Moin, at the moment I have unfortunately little time and am constantly on the go. Must be well or bad with the thickness in the workshop. So that the there not “wildly poking around” and something goal-oriented are looking here my problem and “my” guess. Give please opinion. Thank you! Symptoms: – After approx. 2 hours highway ride comes the message “key not found” – voltmeter shows times 14,1 volts, times 14,5 volts. fluctuates, but unfortunately not comprehensible (speed independent) – comfort battery (new) is almost empty after about 15 hours of service life – right xenon flickert (only the right) facts: – I do not drive short distances (at least 1 hour per direction approx. 50 km, 2 x daily morning/evening) – Both batteries are NEW, changed 2 weeks ago – error memory is empty – footrooms dry – sitting heating/cooling is not used – standing heater off – test method radio omitted guess: – ground points. The question is only … which. The battery management unfortunately hangs on x-different mas The stupid thing is, I have to get out of here (abroad) and don’t want to let the fat guy run and be unreachable at the same time. Thanks & Greetings, Pete