I tried, for nearly 5 years after reading about the phenomenon on this forum. It never happened for me. This included a trip where the battery was depleted to 2 bars within the first 25 miles while traveling south on I-5 over the Siskiyou Pass and into the mountains of N Cal. This was during the first week of ownership, and not being familiar with the vehicle, I just got in and drove.
While fueling up near Redding, after buzzing over mountain passes on 2 bars, at 70mph for the previous 2 hours, I read a part of the manual on HV Charge and engaged that to get the battery to roughly 50% for the remainder of the 700 mile drive. Never saw 1 bar on that trip, and I never figured out how to get it to 1 bar.
This is, in my experience, a narrow band. At any speed when EDM may engage, it must also be in, and remain in a limited range of torque relative to that speed. I operated the vehicle exclusively in ECO and never pushed the accelerator beyond the “click point”. That said, I could get EDM to disengage easily and consistently with anything more than the slightest amount of acceleration. On one occasion, an opportunity presented itself to ever so gently accelerate while in EDM and I managed to achieve a speed of 85mph.
My actual experience with the vehicle doesn’t align perfectly with your data. I’ve observed the power flow screen while EDM is engaged and it occasionally shows the generator charging the battery while the engine is directly driving the wheels. Of course this has always occurred with 2 or more bars remaining on the battery gauge, but it appears to demonstrate that EDM can propel the vehicle without assistance from the battery and motor.
Also, I had mistakenly presumed that since we were tossing around terms such as “too low” “very wide” “narrow”, etc, that 45mph might be considered “close enough”.
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