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I used duplicate key to start 2008 jetta volks wagon it went into safe mode on odometer am not able after that?

Using a duplicate key should not cause your car to go into safe mode. Safe mode is typically triggered by a problem with the car's engine or transmission, and is meant to protect the car from further damage. If your car is in safe mode, you should have it scanned for trouble codes to determine the root cause of the issue.