My back hatchback door won't open. The key fob sounds like the mechanism works.

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There doesn't appear to be any object stuck in the lock latch inside. How can I get it opened?. The key fob nor inside car buttons will to open it. They sound like they work. But the back latch won't open still. Just started doing this today. Help! Thanks so much. There doesn't appear to be a manual cable way to open like older minis.