I have a problem with my 2005 407 saloon, the boot and fuel flap won't open. The boot does not open with the key fob or manually and when I close close the central locking the rear lights stay on for about 2 mins before going off. The central locking is working and the doors close ok. This started two days ago, they did open once and I thought it was just a temporary fault, but I has re occurred. Anyone got any ideas? Thanks!