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A working door with uncertain key copies is a rekeying discussion; a door that resists closing needs its operating fault described for repair. If both concerns apply, ask how each is included. The number of openings also matters: one front door is a different scope from several entrances with different keys.
For a vehicle, identify whether a working spare remains and confirm support for the make, model and year. Car key replacement should be described against that vehicle, not simply as a generic fob.