Happened to me today key in key slot power on lower all windows open all doors open boot start cleaning car 3 hours later beep beep beep beep beep beep........ does it want me to take the key out? take it out close all doors and boot lock unlock beep beep beep beep beep beep........ try to open boot nothing happens open door try to switch on all warning lights plus big red triangle oh nooooooo battery? clamber inside to boot just read this morning about taking out floor and finding manual catch done boot open find 12V battery right side that is tiny!!!!!!!!!!!!!! back into house grab meter 8.83V oh noooooooooo still beep beep beep beep beep beep........ get charger connect to mains set to 2A connect to battery volts gradually build 12.5V back into drivers seat switch on warning message battery will not charge in neutral put into park oh didnt know it wasnt do that & engine starts beep beep stops phew symbol shows charging main battery but is it charging 12V battery? leave for a while - engine cuts after about 1 minute well thats not going to charge battery - is it? turn off ignition etc continue to charge 12v battery through charger Is this the correct procedure?