- Ford recalls 1.4 million F-150s after surprise downshifts spook drivers.
- Software fix comes first, but Ford isn’t ruling out pricier hardware fixes.
- Feds previously opened a probe after receiving reports of wheel lockup.
Plenty of learner drivers getting to grips with a manual gearbox for the first time manage to hook second from third when they were actually planning on fourth. But now Ford is recalling almost 1.4 million vehicles in the US because their automatic transmissions are treating owners to similar unpleasant shift surprises.
According to National Highway Traffic Safety Administration’s (NHTSA) files, 1,392,935 F-150 trucks from the 2015 through 2017 model years equipped with a six-speed automatic may suffer an intermittent signal issue between the Transmission Range Sensor and the Powertrain Control Module.
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The result of that very techy-sounding glitch is that the truck can momentarily get confused, then droop all the way from sixth gear to second without warning. Besides being seriously jerky for those onboard, that sudden downshift can cause rear-wheel lockup, and in some situations the rear tires may even kick loose.
Ford says the root cause is degradation of electrical connections in the transmission lead frame caused by thermal cycling and vibration over time. Essentially, years of heat, shaking, and general truck life have worn things down until electrical signals start misbehaving.
New Recall, Old Problem
This isn’t a new issue. In February of this year, the Feds opened an investigation after receiving reports of problems from F-150 drivers. As of April 2, Ford said it was aware of 444 warranty claims, 121 field reports, 105 customer service reports, and 316 owner questionnaires potentially related to the issue. It also cited two injuries and one accident that may be connected.
Software Fix Comes First
Now that NHTSA probe has sparked a full-on recall of mammoth proportions. The remedy starts with software. Dealers will update the PCM calibration so the system better recognizes a failing sensor before commanding the downshift. If a truck previously logged certain diagnostic trouble codes, dealers will also replace the transmission’s lead frame under an extended warranty program at no charge.
Ford announced over 150 recalls last year but says it’s working hard on fixing quality gremlins to ensure the cars and trucks coming off the line today will be more reliable. For now though, its dealer techs have plenty of recall work to keep them busy.
