You either have to do it from inside the wheel well - or inside trunk - is this a manual pull with cable from inside car or push button electronic- reads as this is a 06 lexus _ its electronic- look up in car manual that comes with car to see what fuse this controls that's where I would end up going to additional to find out - you may have fuse out or sensor - I know some are opened with smart key - batteries sometime are low on power - maybe try new batteries if you have smart key first as they say - try the easy approach first

You have to remove the lock cylinder to access it's inside trunk.