Since I never deplete EV, I can't say. I like to save the EV for when I can use it most effectively, going uphill. As for this so called limited EV IN HV MODE, I don't in any away consider that as EV mode. You can very efficiently increase the puny EV charge by pulse and glide in HV mode.
see Yes, you can charge the battery while driving: my plug-in experience | PriusChat also, when I was driving the car from Oregon, right around the CA/OR border, I was able to get about 3 miles of EV range regene'd. of course, i used them all up immediately in high-speed highway driving, but they were there.
You'd need a REALLY big hill. I drove over the Sunol grade once and got nada coming back down. I don't know if Sunol is a mountain or not but if it isn't, it's the tallest definition of a hill. I don't want to call Priuschat members liars but I have yet to discover the flying spaghetti monster. I'm going to need a bigger mountain. I'm going to try the Grapevine on hwy 5 to Los Angeles this Christmas. Anyway, once I exit the freeway, I go the rest of the mile or so to my house in EV mode. Call it whatever you like, my engine is not on. I don't press any buttons. I just feather the accelerator and hope no one comes up behind me because they are going to be pissed. The speed limit is 40 mph but I hardly get to 35 mph before my turn into residential streets.
Yes, it will come back on automatically once you have regen'd about 1.5 miles of EV range. Again, happens to me every single day. I usually have 2 miles of EV range at the bottom of this one hill on my way home.
The Sunol grade may not be steep enough, or long enough to do any significant regen. Coming down from the Sierras will do it as Andyprius#1 has stated. The grapevine in SoCal should be sufficient. Sharp Park road in Pacifica from Highway 35 down to Highway 1 is more than sufficient. That road is only about a mile or so long, and goes from about 600 feet at the top to about 50 or 60 feet.
It's only limited in the sense that it's only good for about a mile or two, and you can't go as fast as in normal EV mode for the PiP. It's definitely very useful. Would you rather we call it EV-lite?
Please specify which posts you are referring to. As others have tried to explain, it WILL come back on with sufficient regen. I've experienced it myself several times.
The post above that says: "Once depleted in EV you cannot regen. When I go on any small trip I will save all of my EV from the beginning and use it going uphill so I get 100 mpg bars. After peaking the hill I revert back to HV and take advantage of further regeneration and also getting more 100 mpg bars. Lately I almost always return home with 3-4 miles of charge to reach my destination the next day when I charge up again, electrically."
And if I went down that mound with fully depleted EV would the green light come back on by the time I reached the bottom?
yes. Marcus, if you go to the post I linked earlier, you can see a map of my driving. there was a fairly short and steep hill that allowed me to regen about 2 miles.
I regen about 1.2 miles each day on my way home from work. The car doesn't automatically go into EV mode but at about .8 of EV range the battery display switches from HEV to EV. At this point I can hit the EV/HEV button and go into EV mode.
I noticed that too. Today's traffic was so bad that I was able to golf cart mode my EV range from some 5 miles down to 0.1 before speed picked up. I usually save my EV for slow traffic and it eventually gets used up. But today was so especially slow that I didn't need to press the EV button to keep up. Nearing my exit, I had an indicated 1.2 EV miles. If i'm able to regenerate that much battery capacity going on flat roads, i wonder why I never recover EV mode once gone?