The probe began in September and found roughly 2,700 grievances and over 33,000 warranty claims with the 2011 to 2013 Edge SUV.
The complaints involved 14 drivers who said doors had opened unexpectedly. The investigation covered over 440,000 SUVs.
However, the National Highway Traffic Safety Administration ascertained the doors were either opened by passengers or not latched properly.
The agency found no excessive safety risk because the latches work correctly and no crashes or related injuries were reported.
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