Prius (2010-12) Fuel :: Stop Start Idle Technology Won't Work When Transmission Is In B Mode
Aug 7, 2012
This morning I was playing around with my 2010 Prius "B" mode - I realize today that when the Prius CVT is in "B" mode the Prius ICE won't turn off even when it is at a complete stop -- instead the ICE runs/idles at a 996 RPM / .20-.40 GPH while stopped in traffic. The coolant temperature (@190F ) doesn't matter, Battery State of Charge (54% soc) doesn't matter. To re-enable the stop-start idle technology - I had to switch the Prius CVT back to "D" mode. I end up burning a bit more fuel on this trip because it took me a while to realize that I was in "B" mode and that the stop start idle technology had disabled in the "B" mode ...
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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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I have a 2008 F350 with a 6.4 Powerstroke diesel engine that just experienced total engine failure. It has around 65K miles.
There is a heavy burn star pattern on all 8 pistons, a few pistons are cracked, a few cylinder walls are scored, glow plugs are melted, both heads are cracked with multiple stress fractures in each head.
About 1 month previously, the transmission would not work in tow mode and caused the engine to go into limp home mode. The dealership just replaced the entire tranny as a warranty item. About 1 week before the engine failure, I put in a 5.25 oz bottle of Lucas injector cleaner with a full tank of gas.
The Ford dealership is saying that the star pattern on all 8 pistons is due to high pressure fuel overspray and is evidence that I had a tuner on this engine and that the warranty is invalid. I did not have a tuner. What might have caused this engine failure?
Also, they only ripped down the top half of the motor, not the bottom half. I heard this might have been caused by a cracked crank shaft, but Ford refuses to investigate this possibility.
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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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Well been playing with all the mode to see what they do and the one thing I have noticed is I get worst mileage under ECO Mode. Why it doing this.
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I've been hitting the EV switch to keep the car in EV mode for the first couple minutes. It kicks off at about 20 mph. It does let me get up to speed using EV mode so my hope is that will translate into higher fuel savings.
The default and Eco modes require starting up too slow while hitting EV lets me apply more power and faster acceleration. Wondering why Toyota didn't engineer that into the car though?
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In reading the manual, I note that it says to use the ECO mode when you're doing a lot of stop and start driving. Does that mean I should NOT use it on the interstate? My daily commute consists of 11 minutes start and stop to interstate, 11 minutes on interstate, and another 11 minutes of start and stop. My Prius is not quite a month old, so i am still learning.
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New to Prius. I have read everything I can find on getting better MPG and find different ideas about using EV. My car is a 2014. Most say DON'T use EV except to move the car or just before the ending of your trip.
My thoughts are the ICE is not very efficient at or below 25 mph. Why not use EV excelling from a stop? Or driving 20 mph anywhere? I notice my car goes electric below 45 mph using very light throttle on a level or slight down slope.
I haven't lifted my foot to force it there, just driving to go with traffic or maintaining speed. So some Toyota software engineer thought it best to use electric even if I'm doing 44 mph ???
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Several time lately I've gotten in to go to work and the battery shows for half sometimes 3/4 of charge, but it will not go into EV mode. But I can be in town driving and it will go into EV mode with only 2 bars of charge. Whats up with that.
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I searched but did not find a post about entering diagnostic mode of Prius 2010. Is that possible at all?
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Just bought a 2010 Prius IV and loving the car.
Minor annoyance, but wondering why it's so difficult to get the car to enter or stay in EV mode.
When I'm able to get into EV mode, it often beeps that it's leaving EV mode due to excessive speed, but I'm often doing barely 10 mph when this happens. I was under the impression that I could do up to 25 mph. Yesterday, I was floating at 8 mph and it said that was excessive speed.
More often, though, I can't even get into EV mode. It says "EV mode currently unavailable" and why. Doesn't matter if I'm not moving or if I'm driving slowly.
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It has been documented that the computer will let the ICE coolant cool to a lower temperature before mandating it to fire up again to maintain that lower limit.
Why isn't this done in other modes? Is this compromising anything when it comes to emission or engine protection? Since full power is available in ECO mode, one can force the ICE to drive with full output, even when it is a little cold.
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We have 2 trips coming up this summer (600 miles and 1400 miles), these will be my first long distance with the Prius.
Did anyone tested fuel economy using the cruise control in ECO vs NORMAL vs PWR ?
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Gen 3 .... Driving in Power Mode to obtain the best mileage? I find I am getting better mileage in Power Mode.
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Can I assume that my rear brake lights don't come on when I'm in B mode on my transmission? I searched for something about this in my manual and on this website, but found no mention of it. Since it's meant to simulate downshifting, I'm guessing my brake lights don't come on.
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For some reason the wipers only work while moving. At a complete stop, slow, fast, intermittent and the wipe mode do not work. If moving forward all functions operate per the owners manual. The rear works perfect.
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I was interested to purchase the 2016 GX460. Dealer was explaining me the Technology pkg and the Executive pkg. When I researched on the internet, I see that there is a Premium pkg also. tell me the difference between the Technology pkg and Premium pkg.
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I'm still thinking about buying a 2010 Prius. I'd like to know: Suppose I want to, in the morning, move the car from my usual parking spot to another area of the apt. building's parking lot until I leave for work later on. So I would back up a few feet, then slowly drive about 150 feet (at most) to another parking spot. When I press the Power button, does that automatically start the engine (ICE), or can I move the car all in EV mode?
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I have a Viper SmartStart and sometimes forget to turn the AC down to LO and leave it in Auto. Is there any way to set the car to always start up with those AC settings?
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I have read that when accelerating from a full stop, it is better to accelerate briskly, but keeping the bar graph in the ECO zone, to cruising speed is better overall for gas mileage compared to accelerating slower and taking more time to reach cruising speed....
I have also heard that it is better to accelerate using the bar graph and making sure it only goes half an inch past the ECO display above it. This way uses less RPM.
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I have my 2011 and all of a sudden my car stopped being able to sense it in the car or outside the car. The lock and unlock function still works which is puzzling, and when I tapped it to the power button in effort to start the car, the car still does not start and says it can't locate the key. I dropped a 85lb weight on it the other week at the gym but it appears there wasn't any damage when I took the key apart, and it was working fine up till now. The spare works fine, but I'm just hoping I don't have to buy another key...
Also noticed this is the same part number, and since i only need the new circuit board I'm assuming, I wonder if its the same size as the prius one...
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