The trunk lid may not latch closed, this is generally caused by the trunk latch sticking in the open position. Our technicians tell us that in most cases the trunk latch assembly will need to be replaced to correct this issue.Google+
Car Problem Reports
Lincoln MKS Trunk lid may not latch closed
Lincoln MKS Problem
trunk will latch when pushed to the closed position, but it will not lock. the release buttonbelow the trunk lid will always release the latch since the latch will not lock.the hand held fob and the glove box button will always release the trunk latch. since the trunk latch is never locked the trunk lid can be opened by anyone who can then read the code for opening the car doors by means of the door keypad and can the start the engine and drive away (steal) the car.