Feb 2 (Reuters) - The National Highway Traffic ‌Safety Administration said on Monday ‌it had expanded a safety-related investigation into 1.27 million Ford F-150 pickup trucks following reports of unexpected downshifts with ‍rear-wheel lockup.

Federal regulators are expanding an investigation into 1.27 million Ford F-150 pickup trucks after reports of safety issues related to the vehicles' transmissions. The National Highway Traffic Safety Administration said it had received reports from drivers ...

Ford is recalling more than 550,000 F-150 pickup trucks because of transmission issues, according to the National Highway Traffic Safety Administration. The recall covers 552,188 2014 F-150 vehicles due to a loss of signal between the transmission output ...

Owners reported sudden deceleration, downshifting, and temporary rear wheel lockups in 2015-2017 models. The investigation by the National Highway Traffic Safety Administration could potentially lead to a recall. Ford has led all automakers in the number ...

Software fix planned after investigation into transmission problem.