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Recall 16V621000 (2016) covers certain 2013-2015 Ford Taurus and Flex (plus Lincoln MKS/MKT and Taurus Police Interceptor) equipped with the 3.5L GTDI EcoBoost engine: a component in the fuel pump electric module (PEM) can overheat and cut electrical power to the fuel pump, so the engine can stall or shut off while driving. Complaint texts on the 2013-2015 Taurus and Flex describe the vehicle shutting off without warning and needing a tow -- this recall is how the 3.5 twin-turbo shows up in the Taurus SHO / Flex EcoBoost windows.

Check — Run the VIN through Ford / NHTSA recall lookup and confirm 16V621000 shows completed; ask about any history of the engine stalling or shutting off while driving, and confirm the fuel pump module was replaced under the recall.