DETROIT – Federal safety officials are investigating whether a Ford Motor recall of automotive transmissions should be widened to fix more than a million additional vehicles.

File photo taken in 2012 shows the 2013 Ford F-150 XLT pickup truck.
Ford Motors, Wieck

Ford recalled 153,000 vehicles in 2016 because their automatic transmissions could unexpectedly shift into first gear, causing drivers to lose control. The recall involved certain F-150 pickups, Ford Expedition and Lincoln Navigator SUVs, and Ford Mustang sports cars from the 2011 and 2012 model years.

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The National Highway Traffic Safety Administration says it’s now investigating whether Ford should have included up to 1.4 million F-150s, Navigators, and Expeditions from the 2011 and 2012 model years as well as 2013 models.

The federal regulator says it’s continuing to receive complaints from owners, including some who say Ford’s recall repair didn’t work.

Ford said the company is cooperating with the investigation.