John A Smith Posted November 28, 2018 Report Share Posted November 28, 2018 I have a 2014 C-Max Energi. I have downloaded and prepared a USB thumb-drive to start the process. Instruction say engine must be running. How do I keep the engine running 10 to 20 minutes on a plug-in hybrid? Thanks for input. Quote Link to comment Share on other sites More sharing options...
Multitask Posted November 28, 2018 Report Share Posted November 28, 2018 It just means to keep the ignition on, so it does not drain the battery while it does the update. It takes about 15-30 minutes to do the update, so you could just keep it plugged in with the ignition on. Quote Link to comment Share on other sites More sharing options...
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