A glitch in the ECU software may be responsible for at least one crash, according to Ram and Stellantis.
, the software bug causes the ECU to miscalculate the fuel mixture and can cause the vehicle to stall. Neither thereport nor the NHTSA bulletin details if the ECU was running the fuel too lean or too rich, only that the mixtures are"incorrect."equipped with the 5.7-liter"eTorque" engine
. For those unfamiliar, Ram's eTorque engine replaces the traditional alternator with a 48-volt battery powered, belt-driven motor generator that functions as what Ram calls a"mild hybrid system." Basically, the system can use electric power to smooth shifting transitions, and e-roll assist the wheels for a half turn in start/stop situations before smoothly switching to the ICE.
The good news is that if you happen to own a 2021 Ram 1500 with a 5.7-liter eTorque engine, you can take your truck to your local dealer and their service department will update the ECU software free of charge for you. For more information you can contact FCA US customer service at 1-800-853-1403 and give them the recall identifier:"37A."
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