I'm a little concerned about this and wonder if anyone has heard of anything similar. This afternoon I parked my car on my parents drive - dead straight on a slight slope. When I came to go home the key wouldn't turn in the ignition and the steering wheel was locked. Not normally a problem but I did the normal wiggle of the wheel but nothing unlocked. After about 10mins I called on my Dad to try. He tried the same, tried rolling the car forward, tried wiggling the wheels. Nothing would unlock the wheel. We tried reading up about the immobiliser and couldn't find anything about this or any potential issue in the manual. We tried the spare key. Nothing. Eventually I called Diahatsu Assist/RAC to come and rescue me. They arrived in 5 mins (the RAC man lives up the road from my parents and had just got home!!) and WOULD YOU BELIEVE IT as I went to demonstrate the problem, the car started immediately. What I'm concerned about is why it happened in the first place and whether it will happen again when I am not in such a convenient place. I have realised that I lean on the steering wheel when I get out of the car so wonder if this would have caused something, but I still don't understand why the wheel didn't unlock when wiggled? Has anyone ever had anything like this or any clues as to what might have caused it?