Prius (2010-12) :: PWR Mode - ICE Tend To Turn Off Less Often
Jan 15, 2011
I have clearly noticed that in PWR mode, apart from the obvious change in gas pedal response, the ICE tends not to shut down and burn fuel when releasing completely the gas pedal, especially - but no exclusively - at higher speeds (e.g. >90km/h).
In normal or ECO mode the ICE will turn off (though still turning, I know, if at "high speeds") and fuel consumption will show 0L/100km.
With PWR the engine spins and you see a fuel consumption not equal to 0.
My theory is that the engine management will be a bit more aggressive and tend to keep the ICE spinning with gas to make sure that when the gas pedal is pressed the reaction is immediate and there is no lag due to the MG1 spinning it first to turn it on. Moreover, the battery is charged more than just letting the wheels spin, but less than braking, in this way, since the engine can actively drive MG1 to generate energy for the battery (not very efficient, but after all this is PWR mode... ).
This would justify,BTW, in a more scientific way the statement on the User's Manual that says that PWR mode will tend to increase fuel consumption.
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I have a concern about my 2010 Prius V(five). I've noticed some issues lately that may all tie in to one big problem.
1. My ev mode will not work at all. My battery will be fully charged and not in "B" mode. Turning car off and on will not work.
2. Engine will not turn off when coming to stops. Mind you when the battery is above 3 lines.
3. Throttle response feels like it's in PWR mode(super sensitive) but the engine is leggy. If I floor it for a sec the RPMS are super slow to come down.
4. The Eco line is quick to go in PWR portion and I'm not pushing it any harder than I was before all of this started. It seems like when I push the gas it skips the electric and automatically pulls from the engine.
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My car: RX 350 - 2010
I never really pay attention on this ECO thing until someone drove my car and this ECO green light is disappeared and also I tried to check with the toggle button and it saw the ECO mode is OFF but I cannot figure out how to turn it back on?
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You arrive at your destination and you are in the middle of listening to a hot news item or a song on the radio. It may be a while before this may finish and so you want to SHUT OFF the engine only and stop idling, but don't want to shut the rest of the electronics off.
So, yes you can do this by turning the engine off and then pressing the start button without placing the foot on the brake paddle. But by then you have lost so much important information streaming down from the radio (as it shuts off when you stop the engine).
So I was wondering if there is a way to go from ENGINE ON mode to just ACCESSORIES only mode without 1st stopping engine, then pressing start button.
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So I have heard that, it is only good to turn on the ECO mode when you are driving in the city or town. When you drive onto highway, you should turn ECO off. Any good explanation of what is the best method of using the ECO button?
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When turn on the start on my car the engine kicks in, how come the Ev mode doesn't turn on the I select it?
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I've had my nice new red Prius now for 2 1/2 weeks now, and I'm noticing a disturbing trend. Other drivers don't seem to see me! I'm not taking about drivers who don't look while changing lanes. I've now had 4 separate incidents where people have turned left RIGHT IN FRONT OF ME, causing me to slam on my brakes.
Now, prior to my Prius, I had a gray Matrix for 7 years. I would think the gray Matrix would have blended in more than the red Prius would have, but I don't think in the 7 years I had the car, I've had this many of this kind of close calls I've had in the past couple of weeks.
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When I put the car in ready, the car will beep 3 times. It's like, foot on brake and press start button, then car shows ready, at the same time it goes chirp-chirp, then beep beep beep. I'm just wondering if the 3 beeps can be turned off? I didn't find any thread regarding this beep. I did find many about turning off the seat belt beep, reverse beep, etc. and I already turned off those beeps.
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It happens yesterday when I passed an accident caused traffic jam. The day is hot, about 100 F and the traffic is very slow. It lasted for about 15 to 20 minutes, of course the battery had only 2 bar left. After the traffic jam, the battery is charge quickly, but I realized that the EV will not turn on, or the car has only gas engine running. I can feel the acceleration is different with only gas engine running, not as smooth as normal. I got home, turned off my car. After two hours, I tried to drive it again, it's still the same. Until this morning, it got back to normal. During the whole time, there's no any sign showing there's any problem.
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When I'm leaving the house and I pull out onto the street, I have to go close up a very annoying gate which takes a good few minutes to do. The car is still in it's warm up mode so the ICE is running the whole time. I know just turning it off would save gas, but would it be bad for the engine, to turn it off with the key before it shuts itself off?
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My 2010 has no ACC mode. Took it to dealer to have key fob programed and dealer could not put car into ACC mode.
I'm second owner. This is not an issue of how to put in ACC mode. It does not enter ACC.
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I didn't see anything in my search. Why is EV mode not available sometimes? i know for sure it isn't available when i start the car. But sometimes else it is not available. And I don't mean "excessive speed" or "low battery"
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So there I am, showing off my new car (1 week old) to my family, and I'm bragging how I can go up to 25 MPH while in EV mode.
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When I start my car at the beginning of the day I can never put my prius in EV mode even when the battery (battery at half) is not in low.
Also, as I am driving down my small street for about a few mins then it let me put in EV mode. When I do put it in EV mode, I only can drive up to 10mph and it cuts off.
This is when I'm already been driving for a good period of time like 30 mins. For example when coming from work my battery is charged pretty well because I'm on the freeway for about 24 miles. I put my prius on EV mode and I'm able to go up to 25 mpg. How come I am able to go 25mpg in EV mode after being in the prius for at least 30 mins and when in the morning in EV mode only at 10mpg?
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I've been driving an 2007 Prius unitl last week, when I upgraded to an 2010 model. I'm very happy with it so far.
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I notice my Prius sometimes turns-off the engine & runs pure EV when cruising at 40-45 miles/hour. Sometimes for a few miles! That seems very inefficient vs. taking power directly from the engine:
- Gasoline--->burn---> transmission--->wheels
- 1 state transition (chemical-to-mechanical)
- Gasoline--->burn--->transmission--->generator--->store in battery--->extract from battery--->motor--->wheels
- 5 state transitions
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Prius Five 2012 fully loaded in Blizzard Pearl. A/C keep changing mode from face/head only to feet every 2-3 minutes on its own. Auto button light is off and this continues..... I've stumped all the dealers, no one has a fix.
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New owner of a used 2010 here, and I cannot get the car into accessory mode. It should be simple, press the power button without your foot on the brake, right? but no... it just doesn't do anything.
But here's the thing - the car is a former rental (Zipcar), and I wonder if they somehow disabled accessory mode to avoid dead-battery issues?
The other (less appealing) possibility is that they broke it accidentally somehow while wiring up their magical gizmo that allowed Zipcard holders into the car with no key... but that doesn't make as much sense to me.
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I cannot figure out what to do when cold weather comes and I want heat in the car. I've never owned or driven a hybrid. Looks like there are two alternatives:
Set the internal temperature setting to whatever warmth I want, disable the "Automatic" setting, and assume that outside air will be drawn in and warmed by the engine and circulated inside.
Use "Automatic" and let the A/C setting automatically run to warm the air to the temperature I set.
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What's top speed for EV mode? I was able to keep it in EV when driving through town, after a hill, and keep it around 41-42 for a little while before my speed dropped and I had to use a little more throttle.
I don't understand why you can't lock in EV and deplete more of your battery at times, such as a few miles before getting on the freeway. Seems a bit wasteful, since the highway portion would give you plenty of time to build up charge again.
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When I first got my generation III, I had it on Eco. I found this hard to adjust to after being in a Camry. So I got the car out of Eco mode, but didn't put it in either EV or Power mode. I've been assuming this is OK for over 35,000 miles now. Is there something wrong in what I'm doing?
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