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German automaker BMW is recalling some of its 7-Series luxury cars due to reports of transmission control problems that can cause parked vehicles to roll away.

The National Highway Traffic Safety Administration says the problem has caused at least 14 crashes and possibly 5 injuries. It involves cars with model years from 2005 to 2008 that have push-button start and electronic transmission controls.

Federal safety officials say the system may leave a parked car's transmission in neutral if the driver presses the engine's start-stop button two or three times in a short span. The cars can then roll away unexpectedly and crash.

The recall involves 45,500 vehicles. Safety regulators first started looking into reports of the problem more than a year ago.

BMW will start notifying vehicle owners next month.