I had a free car valet thanks to O2 priority moments and obviously I had it done on my 307. Anyway came back everything was ok until I got home and tried locking the car, it just kept unlocking itself as soon as I locked it. I left it to dry out and I believed that they had got something in the door wet and it seemed to be ok. Until I was driving home another time in the rain, went round a roundabout and the interior light started flashing and the multifunctional display indicated that the passenger door was open (I have deadlock active and had already been driving for 10/15 minutes before hand), during that night it rained hard and was cold and in the morning I found my car unlocked on the drive and the battery was next to lifeless, almost couldn't start the car and had a neighbour tell me that several times through the night they had seen my interior light constantly on/off. I have suspected and got prices for a new door lock assembly but do not fancy paying out unless I am confident that it is the door lock assembly. I guess someone has already asked this question but I was unable to find anything through the search and I apologise about the essay but more information the better! So I anyone has any sort of suggestions or can confirm my suspicions please reply! Funds are tight and trying to live at the same time and need the car for work. Thanks!