this might sound silly but i thought mine had failed the day.
double check all your doors + the boot is/are properly shut - otherwise it wont lock , make a noise or anythin
took me 10 mins to realise my boot was'nt quite shut. and thus my car locked when i shut it : )
thanks, thats the first thing that i did do actually was check all the doors and it took me quite a while as well and after doing that it did actually lock the way it should. But this problems seem to be getting more frequent and I am beginning to look like a nutcase walking round my car opening and shutting the doors several times each time I need to lock my car Lol any more advice......