really need assistance if possible, 2003, 807, Went to start car yesterday, opened ok with remote, turning ignition on, loud beeping from all speakers, front foglights came on, turned off to find dash warning lights all on, numbers for mileage all at zero, dash lights on but dim, front foglights still on, engine would turn but not start, managed to cure all this by disconnecting battery but afraid im going to get stranded if i dont find root cause of this fault, any help would be greatly appreciated