
The National Traffic Highway Safety Administration (NHTSA) said on Monday it's opened an investigation into the 2015-2017 Ford F-150 over a possible transmission defect. The investigation, first reported by Reuters, is over reports that the transmission could unexpectedly downshift when the vehicle is at highway speed, which could cause a sudden rear-wheel lockup and loss of control. NHTSA received 138 customer complaints, and the investigation covers 1,270,970 vehicles.