Hello ! After a longer service life my SL R230 2005 has no power any more. Both batteries are empty ! Driver door with emergency key opened without any problems, keys in the ignition and nothing happens. No electricity all dead ! Rear flap cannot be opened with the emergency key. I removed the starter battery in front and recharged (battery is full), reinstalled and connected and still nothing happens. I put the key in the ignition and it does nothing (a) I can’t get to the big comfort battery in the trunk. Otherwise I would have charged it again. I hope one of you has an idea how to proceed when both batteries are empty. Thank you!