I have a really irrating problem. every now and again when i lock the doors the locking opens its self again as though a door is open. I have tried other motors that are known to work and the same happens. problem is that when it does do it i cant lock the car. and sometimes it a day till it starts working properly again. any ideas as to what to check?

safe chav?? you good on electrics.. any ideas?

cheers guys