steering wheel will not lock and I can not start the car? What would cause that? on 2004 Honda Odyssey

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Failed ignition switch assembly. Does anything happen when you turn the key? Do you have dash lights? Is the green 'immobilizer' light flashing when the key is in it?Car doesn't start , but does it crank(turn over)?.........Not really enough 'detail' in your question for good answer.