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Discussion Starter #1 (Edited)
No idea if this has been discussed yet, if so forgive me. I was sitting in my car on my lunch break yesterday and playing with my gas pedal feeling the 2 stage pedal. Car was “running” (vehicle on, ready to drive) and going through it’s normal 60 second engine start and run every few mins to keep the battery charge above 2 bars. Just for S&G’s, I held the pedal down to the floor for 8-10 seconds and to my surprise the engine started and idled. I figured I had just caught it in one of its charging cycles so I let off the gas and about 2-3 seconds later the engine shut back off. So I ended up doing it again, and the engine started and stayed running as long as I had the pedal down. This feature could be extremely useful or totally useless, but either way I wanted to share.
 

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There are several different comments packed into above...

Were air conditioning or any other systems running to trigger the engine cycling? I don't think I've experienced a cycling 60-second run of the engine, but then again I haven't idled the car for long when not driving.

Regarding the car shutting down, how long had the car been on and in Park? Perhaps it hit the "30-60 minute" window mentioned below (OM19 pg 191), after which time the car powers down to conserve 12V battery. And when re-tried with the gas pedal held down, maybe this time limit was overridden (?).
5797
 

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Discussion Starter #3
There are several different comments packed into above...

Were air conditioning or any other systems running to trigger the engine cycling? I don't think I've experienced a cycling 60-second run of the engine, but then again I haven't idled the car for long when not driving.

Regarding the car shutting down, how long had the car been on and in Park? Perhaps it hit the "30-60 minute" window mentioned below (OM19 pg 191), after which time the car powers down to conserve 12V battery. And when re-tried with the gas pedal held down, maybe this time limit was overridden (?).
View attachment 5797
Allow me to clarify a bit. The car was “running” (All systems on, ready to drive but engine was not running). The A/C was off, but climate control was on. The car usually starts the engine and runs for 60 seconds or so every 5-10 mins if you’re just sitting in park with it running to keep the battery above 2 bars. Regarding shutting off, I meant the engine stopped running, not the vehicle shutting off. I will edit my original post to clarify these points.
 

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I will have to try this after my next oil change. It is always a pain to get the engine actually turning to see if things leak. So yes, this is useful.
 

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The climate control system can also be used to keep the engine on... though less directly/predictably as foot-on-pedal since it depends on relative cabin-to-exterior temperature difference. But using the climate control system in this way would allow someone working on car by themselves to get the gas engine running and still be able to walk around to inspect.

In winter, cranking up the heat set poin should keep the ICE running. And in summer, keeping the A/C running by entering a low set point (while also at low HV battery level) should also keep the ICE running.
 

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Discussion Starter #6
The climate control system can also be used to keep the engine on... though less directly/predictably as foot-on-pedal since it depends on relative cabin-to-exterior temperature difference. But using the climate control system in this way would allow someone working on car by themselves to get the gas engine running and still be able to walk around to inspect.

In winter, cranking up the heat set poin should keep the ICE running. And in summer, keeping the A/C running by entering a low set point (while also at low HV battery level) should also keep the ICE running.
That’s why you keep the good ol’ “fast idle stick” around. :)
 

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Discussion Starter #7
So just to caveat, I tried this again this afternoon. Pushing any amount on the gas pedal and holding it for 8-10 seconds will cause the engine to start and run until you release it.
 

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So just to caveat, I tried this again this afternoon. Pushing any amount on the gas pedal and holding it for 8-10 seconds will cause the engine to start and run until you release it.
Does this occur independent of HV battery level? Have you noticed whether the 8-10 seconds equates to any 'bar' depletion of the HV battery level?
 

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I tried it after getting to work, at least with pushing the pedal fully down. It works. I was at about 3/4 full on the battery, so it appears to not care.
 

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Discussion Starter #10
Does this occur independent of HV battery level? Have you noticed whether the 8-10 seconds equates to any 'bar' depletion of the HV battery level?
yes. This is entirely independent of charge level. However, the car will default to charging the battery while you’re forcing the engine to run. But I tried this method with 2 bars, 6 bars and 8 bars of battery and it worked the same.
 
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