If you can get into the boot then, on the right hand wall of boot there is an access panel to the vehicle tools. Remove the panel and there is a small opening into the skin of the car. Reach through the opening and you should be able to move the petrol cap locking mechanism with your hand. It is a tight squeeze and be careful not to cut yourself on the edge of the the body panel. If you can't get into the boot then I have no idea, sorry. To lock the cap push the locking bar into place AFTER closing the filler cap.
Joseph Booth, May 2007
