The majority of the trucks are in the United States, but some are located in Canada and Mexico as well. The Super Duty was also resigned for 2017 for the first time in two decades.
Affected vehicles include certain 2015-17 Ford F-150 and 2017 Ford Super Duty trucks.
Dealers can fix the issue by installing water shields over the door latches and repairing the door latch actuation cables, at no cost to the customer.
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Through the first nine months of 2017 the Ford F-Series was the top-selling vehicle in the US with sales of more than 658,636 trucks, a 10.6 percent jump compared with the same period past year, according to industry research firm Autodata Corp.
The Problem: Frozen door latches, as well as bent or kinked actuation cables, may cause the door not to open or close properly.
Ford says it has no reports of accidents or injuries associated with the problem. Under these conditions, owners may still be able to close the door, but the latch may not fully engage.
2017 Super Duty, built at Kentucky Truck Plant, Oct. 8, 2015 to September 1, 2016. Ford sold 820,000 of the F-series trucks in the US past year. It shares were flat at $12.20.