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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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#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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