Yesterday, I closed the trunk of my car without any problems. When I left the restaurant the trunk wouldn't open with the key or the button in the door on the driver's side. I have read online that there is valet button, but I can't find it in my car (I actually don't think my car has this option). I also checked the Luggage compartment fuse and replaced it anyways. Any other ideas what could it be?

Thank you in advance