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Prius ECM problems! Please advise!

11 messages,  Last post on Nov 02, 2009 at 7:48 AM

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#2 of 11 Re: Prius ECM problems! Please advise! [skyfield] by stevegold Aug 21, 2007 (3:46 pm)
Replying to: skyfield (Aug 21, 2007 12:40 pm) I have a 2004 which of course is a very different kettle of fish. I had that problem a few times and was always able to clear it myself somehow. It did have the gas tank/odometer panel replaced under warrantee because I was and still get strange but consistent fuel gage readings. I also had the display screen replaced under warrantee when it went totally blank. If I had your problem I would leave it as is saving $1,100 which is more than $700. If you make sure they record the incident, since there was a TSB, there is a good chance they will honor the current offer, at least for the next six months or so. I would be more nervous about doing such a big job for a problem that may be gone unless it was 100% free.
#3 of 11 Re: Prius ECM problems! Please advise! [skyfield] by czarlos Aug 24, 2007 (8:09 pm)
Replying to: skyfield (Aug 21, 2007 12:40 pm) skyfield,   I am having the EXACT same issues and problems as you are. My car happens to be at around 96,000 miles, but as of about 10 days ago, it has been fine with just a "reset" as you said.   I am worried as well, but so far so good. I'd really like to avoid the expensive repair. Let me know if anything goes poorly with you, or if you hear anything new on this issue. I'm going to try to do more research on the internet too.   czarlosyahoo.com
#4 of 11 prius extended warranty by janetw1 Nov 18, 2008 (1:46 pm)
I'm about to hit 36,000 miles with my 2006 prius. I'm considering getting the 6 yr. 100,000 mile warranty, but Consumer Reports says it's not necessary. Please let me know if you have had any expensive problems with the Prius under 100,000 miles...thanks. janetw1
#5 of 11 please help by marinefireman May 28, 2009 (5:29 pm)
i need serious help i need a whole new ecm and i am not able to pay 600 dollars from the dealer for what do i do please help
#6 of 11 Prius ECM Problems by brokerbiker Sep 26, 2009 (6:38 pm)
My wife has a 2005 Prius- the last 6 weeks have been pure hell for her due to problems with her Prius and the incompetence of Toyota of Boerne and the Toyota zone staff. At about 50k miles, the car starting generating random error messages and the warning lights all started to go on. The dealer has replaced a variety of components, after having the car for a week this time, and consulting with Toyota, pronounced it 99% sure it was repaired. Today after 112 miles, the warning lights, including the Red Triangle (Tow car to dealer) came on again. This time, the brake warning light and buzzer came on also. The Prius may be a good idea, but the execution and repair work is the worst we have ever seen in a car. It is going back to Toyota of Boerne on Monday and we are filing a formal complaint with Toyota and the NTSB. Thank goodness we bought the extended warranty, but we will never buy another Toyota hybrid again. Replies to this message: dmathews3 (Sep 27, 2009 6:55 am) stevegold (Sep 27, 2009 8:22 am) sullypa (Oct 09, 2009 4:56 pm)
#7 of 11 Re: Prius ECM Problems [brokerbiker] by dmathews3 Sep 27, 2009 (6:55 am)
Replying to: brokerbiker (Sep 26, 2009 6:38 pm) I don't have a Prius as I could never get past the door stop look but thats another story. We have ordered a Fusion Hybrid after driving all the hybrids. But to get back to your problem/statement of never buying another Toyota Hybrid makes me ask. Is this problem you are having a hybrid problem or a problem that could have happened on any Toyota? To me I'd be finding a different dealer which brings up another problem for most Toyota owners. There most likely isn't another dealer within a hundred miles. This was one of the deciding factors on buying the Ford besides it gets better mileage then the Camry. There are 6 dealers within 30 miles of me. If mine turns out to be a dog I can try another. Replies to this message: stevegold (Sep 27, 2009 8:22 am)
#8 of 11 Re: Prius ECM Problems [dmathews3] by stevegold Sep 27, 2009 (8:22 am)
Replying to: dmathews3 (Sep 27, 2009 6:55 am) There have been a number of problems like this reported over the years. I had to have a new screen/odometer installed, a new fuel line and gas tank, and a few other major TSB's, all under warrantee. A number of Prius' just stopped on the highway (software/sensor problem) but I have not had any problem that wasn't already a TSB. I am waiting until the 2011 or late 2010 for a new one as my 2004 runs great. That way, I should miss the five or six annoying trips to Bighorn Toyota, in Glenwood Springs, CO who are just great.
#9 of 11 Re: Prius ECM Problems [brokerbiker] by sullypa Oct 09, 2009 (4:56 pm)
Replying to: brokerbiker (Sep 26, 2009 6:38 pm) Toyota's ECMs have been prone to reliability problems. I have a Toyota Matrix with 86,000 miles, and the check light has been going on. The problem is with the design of the original ECM, and since the car is 6000 miles out of warrantee both the dealer and Toyota have denied any adjustment. I know the problem is the ECM. Toyota issued Technical Service Bulletins in 2006 and again in 2007 describing the problem. But again, 6000 miles beyond warrantee, no adjustment.   I'm buying Honda next time.   BTW, I bought the part at another Toyota dealership, installed it in 10 minutes, and will have that other dealership register the VIN. All at a cost $250 less than the original dealer where I bought the car. So be careful and shop around. Service shops have been known to jack the price up so that they can claim to adjust it down.
#10 of 11 Engine computer by airbags Oct 28, 2009 (7:51 pm)
Yes this is true Toyota ecm and Mitsubishi ecm's are sent from the factory with design flaws. There is a plethora of ecm information about engine computer repair they really go into detail on all engine computers.
#11 of 11 Automatic light control sensor failure by al1998 Nov 02, 2009 (7:48 am)
Hello, Prius owners! I've got a red triangle warning and yellow "light icon" on the display for my 11/04 Prius. it has 115k miles. In the repair manual it's described as an automatic light sensor malfunction, but I don't have this option installed originally from Toyota. All the lights operate normally. Any suggestions before I take it to a dealer.   Thank you.

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