Tried to fill up this morning and it wouldn't open. It opened a bit on the popper just enought for me to notice that the little metal locking pin had not retracted. I tried locking and unlocking the car but to no avail. Luckily I still had 100 miles to go so just carried on to work. I checked it again in the car park and it opened albeit with the pin sticking out a bit. I locked the car and tried the cap and it opened so it appears my lock is faulty. I did a search just now and it might be the case that there is a manual override located in the boot. Is this correct? Hope so as I will need to fill up tonight! Cheers, Dave.