Hi.....I would like to assist you with your question... From what you are describing It sounds like your upper latch on the trunk lid itself is no good. These do go bad on occassion, what happens is the latch mechanism either wears down or breaks where it cannot latch anymore. So it it most likely it will have to be replaced. the part is fairly inexpensive and easy to install. should be around the 60 dollar mark for the part depending on the dealer. the only other thing you may want to check is the opposite end of the latch that is on the body. Sometimes this can come loose and move making it hard to latch. Contact me if you have further questions regarding this issue. Thanks, David
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