Toyota Prius Software Problems - READ ONLY

752 messages, Last post on Sep 10, 2006 at 5:54 PM

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#653 of 752 Re: Prius Recall [stevedebi] by donzi81 Jan 03, 2006 (4:27 pm)
Replying to: stevedebi (Jan 03, 2006 2:13 pm) Doesn't every car have a hit on mileage in the winter? Replies to this message: stevedebi (Jan 05, 2006 10:59 am) donzi81 (Jan 05, 2006 5:27 pm) stevedebi (Jan 25, 2006 10:36 pm) and 1 more...
#654 of 752 Re: Prius Recall [donzi81] by stevedebi Jan 05, 2006 (10:59 am)
Replying to: donzi81 (Jan 03, 2006 4:27 pm) "Doesn't every car have a hit on mileage in the winter?" Ironically enough, my 2003 CR-V EX AWD gets 1-2 MPG better in the winter. However, I think that is because of the Southern California "Winter Blend" gas. The summer blend is very poor for MPG. Replies to this message: donzi81 (Jan 05, 2006 5:27 pm) stevedebi (Jan 25, 2006 10:36 pm) rakers (Feb 02, 2006 5:05 am)
#655 of 752 Re: Prius Recall [stevedebi] by donzi81 Jan 05, 2006 (5:27 pm)
Replying to: stevedebi (Jan 05, 2006 10:59 am) Winter in California is summer temps for me! By winter I mean <40f. Replies to this message: stevedebi (Jan 25, 2006 10:36 pm) rakers (Feb 02, 2006 5:05 am)
#656 of 752 Re: Prius Recall - improved mileage by jay47 Jan 05, 2006 (6:57 pm)
Replying to: gagrice (Dec 30, 2005 4:04 pm) Got a ride with a colleague of mine today. I used to own his 2004 Prius and used to get about 44 mpg on a 12 minute commute. 5 horrible minutes to start with (getting the engine warmed up) and then 7 minutes of great mileage added up to an average of 44 mpg. I usually lost about 2 mpg on really hot days (airco running harder) and lost 2 mpg on really cold days (engine running longer after start-up to get to temperature). I averaged about 43 mpg on highway driving at 70-80 mph with the airco running. Why I sold it is a long story that had nothing to do with my happiness with the Prius (my only issue with the car was the lack of a seat height adjustment). My colleague has a slightly longer commute (30 minutes) and usually gets 54 mpg. He had the software upgrade done this week and was really happy! His mileage went from 54 mpg to around 60 mpg, admittedly on a Prius friendly series of errands. His impression was that the car cycles the battery a bit deeper, i.e. gets more effective battery capacity. Anybody else with an increase in mileage following the upgrade? J P.S.: Our different figures on the same car in the same city (Houston) just confirm that the way you drive and the type / length of commute really influence your mileage. Same happens with normal cars and none of them get EPA mileage under my commuting conditions. So I think 44 mpg was excellent! Replies to this message: fblack (Jan 06, 2006 5:19 am)
#657 of 752 Re: Prius runs AMOK, bumps Tow Truck !!! OMG !!! [midnightcowboy] by fblack Jan 06, 2006 (5:16 am)
Replying to: midnightcowboy (Dec 20, 2005 5:54 pm) There are plenty of other cars out there that have had more software updates than the prius. Unfortunately since the prius is the media darling now, it is in the spotlight. Do a search on the mini cooper and see how many ECU updates it has had. Hybrids not feasible? Explain how I can get 50MPG in a sub 27k car with the same features in some high end vehicles.
#658 of 752 Re: Prius Recall - improved mileage [jay47] by fblack Jan 06, 2006 (5:19 am)
Replying to: jay47 (Jan 05, 2006 6:57 pm) I just had the update done last week with and oil change. My mileage stayed the same with similar type driving. Mild winter here, so not using the heat.
#659 of 752 Re: Prius Recall [stevedebi] by buckeye47 Jan 20, 2006 (8:02 am)
Replying to: stevedebi (Jan 03, 2006 2:13 pm) I dutifully took my 2004 Prius in for recall service in late October. My mileage plummeted by at least 10 to 12 miles per gallon. I don't keep tank by tank records, but my husband has a 2003 Prius, and I had always gotten at least 4 to 5 miles more per gallon than he did, even as each of our averages ebbed and flowed with the seasons in northeastern Ohio. Since the recall "fix," my averages have been decidedly below his, by roughly 5 to 6 gallons. The dealer has offered to run a free diagnostic. Does anyone have any specific suggestions as any particular focus that I should request when I take it back for these further diagnostic efforts? Thanks for any suggestions.
#660 of 752 Re: MY2005 [jkraft3] by grafstein Jan 23, 2006 (2:17 pm)
Replying to: jkraft3 (Mar 24, 2005 11:26 am) My 2005 Prius seems to run the gasoline engine a lot more than necessary. When I called the dealer, I was told that no adjustments are possible. For example, when I first turn the car on, the gas engine will startup immediately or within a minute or two even though I have not touched the accelerator pedal and the battery charge is reported as almost fully charged (one bar below the top). The gas engine also comes on when I am driving below 20 mph and barely pressing on the pedal. Is all this "normal"? Is there anything I can do about it? Replies to this message: fndlyfmrflyr (Jan 23, 2006 6:58 pm)
#661 of 752 Re: MY2005 [grafstein] by fndlyfmrflyr Jan 23, 2006 (6:58 pm)
Replying to: grafstein (Jan 23, 2006 2:17 pm) Yes. No. There is a kit available that allows the car to be driven in EV mode (electric only) below 34 mph and still use moderate 'pedal.' Electric only range is very limited and this 'mode' is not always available due to battery charge state and temperature. Depending on hills, EV only range can be as little as 1/2 mile, though range on essentially flat roads can be two miles or more.