Hi all, I have a 2003 TD5 110 Defender which has sat on the drive for several weeks and the battery has gone completely flat. I have tried to charge the battery but as soobn as I switch the booster charger on the alarm goes off. some years ago someone told me how to switch the alarm off with a combination o 'key position' and pressing the key fob so manny times but I can't remember. Can anybody help?