Toyota Prius Software Problems - READ ONLY

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

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#71 of 752 Prius Computer by parklandtoad Apr 14, 2005 (4:36 pm)
My 2004 Toyota Prius computer malfunctioned right in the middle of the most dangerous intersection in my city in clear, dry daylight conditions. Every warning light came on and so did a big "problem" message light. The car continued to drive, using mostly the electric motor, and I was able to reach a local Toyota dealer a few miles away. They told me my computer had to be "reset" and asked if I had gotten notice of a recall for the computer on my vehicle. The answer is "no" to the recall question, but now I am concernied that there is a recall out there for the computer on the 2004 Prius. Replies to this message: stevedebi (Apr 18, 2005 9:00 am)
#72 of 752 failure today by khs Apr 15, 2005 (2:00 pm)
My 2004 Prius (3300 miles) suddenly beeped and warning lights came on, inlcuding red triagle, engine warning, etyc. Took to dealer--ECM reprogrammed. Service person told me "this has happened to almost all "Prius' they sell. If happens again, just drive to Toyota Dealer--nothing to worry about--no explanation." I just finished reading these messages. I plan to pursuewith Toyota and file a complaint with NTSB Replies to this message: gagrice (Apr 15, 2005 3:41 pm)
#73 of 752 Re: failure today [khs] by gagrice Apr 15, 2005 (3:41 pm)
Replying to: khs (Apr 15, 2005 2:00 pm) Service person told me "this has happened to almost all "Prius' they sell. Welcome to the forum. At least the Service people were honest about the occurrence of the problem. Many act like it is a fluke and have never seen it happen before. Did the car quit or just all the Warning lights came on? Did you buy the extended warranty? How do you like the car? Would you buy another one? Good luck with getting an answer. I am sure that Toyota is aware and working on it. It does not hurt to make the NHTSA aware of the issue.
#74 of 752 Re: Prius Computer [parklandtoad] by stevedebi Apr 18, 2005 (9:00 am)
Replying to: parklandtoad (Apr 14, 2005 4:36 pm) Be sure to file a complaint with the NHTSB... it is the only way to get Toyota's attention.
#75 of 752 My 2004 Prius just died by pamsmom Apr 20, 2005 (6:19 pm)
I was stopped for a crossing guard and it just stopped. I have 12,500 miles on it. The Exclamation point in a triangle was there and I could not get it turned on or off - just all the warning lights. I had it towed to the dealer, although it eventually turned back on long enough to get it into neutral for the tow truck. The dealer mentioned there might be water in the gas. Sounds unlikely after everything that I've read here. I'll give them this website. Thanks. It's really scary when your car just dies in the middle of the road. I couldn't even push it out of the way until I managed to get it into neutral. It's a really neat car, but if you can't rely on it, it's not worth much. Anyhow, thanks for the advice.
#76 of 752 Re: Screen Failure [eprupis]. I also had all same, "A/C not connected" by ncarolina Apr 27, 2005 (10:09 pm)
Replying to: eprupis (Apr 09, 2005 5:53 pm) (This is my first posting... also did a search for prius computer problems and found this thread). I Dear Eprupis: You are not the only one. I also have had every single one of the exact same symptoms as well-described in post #67 "Screen Failure". The failure has occured about 5 minutes at a time, several times in last few days. Most of the time it seems to eventually correct itself. I'd like more info about the TSB that suggests replacing the screen #68). I've emailed the dealer with a link to this, and we'll see if they can fix it. FWIW, it seem to me like a software issue rather than hardware for this reason: when it has locked up and I have pressed a few buttons like Display, then Audio, then Climate it seems just like a windows-pc with a hung-program: after about a minute, the computer finally seems to process the minutes-old button pushes that were stacked up, displaying the 3 screens rapidly. Occasionally I see the "Air conditioner not connected" message upon first starting up in the morning, before hitting any buttons at all. If not software, then maybe faulty inputs due to moisture (hood seal). Or perhaps due to the pine pollen that coats everything like a green dust this time of year in North Carolina: I wonder if it is conductive? Replies to this message: ncarolina (Apr 27, 2005 10:25 pm) falconone (Apr 28, 2005 3:28 am) tempusvn (Apr 28, 2005 4:52 am) stevedebi (Apr 28, 2005 11:05 am) Sylvia (Apr 28, 2005 7:17 pm) ncarolina (Jun 04, 2005 6:23 am) john1701a (Jun 04, 2005 7:02 am) templedancer (Jul 29, 2005 3:52 pm) falconone (Jul 29, 2005 5:14 pm) gagrice (Jul 29, 2005 7:02 pm) railroadjames (Jul 29, 2005 7:08 pm) mincha24 (Sep 10, 2006 5:54 pm)
#77 of 752 Stuck "Climate" button causes "Screen Failure" "A/C not connected" by ncarolina Apr 27, 2005 (10:25 pm)
Replying to: ncarolina (Apr 27, 2005 10:09 pm) I just found a probable fix in 2-28-2005 posting at http://john1701a.com/prius/prius-log183.htm namely, a stuck "Climate" button may be all that is causing the "Screen Failure" and "A/C not connected" as described in my posting in 76 and that of eprupis (68) John does not describe any fix other than unsticking a Climate button. Since it's happened a few times to me, I think I'll try to clean around the button and lubricate with a litte wd40 or dry-silicone drawer-glide lubricant to try to prevent the button from sticking in the depressed (down)_position. Replies to this message: falconone (Apr 28, 2005 3:28 am)
#78 of 752 Screen by falconone Apr 28, 2005 (3:28 am)
Replying to: ncarolina (Apr 27, 2005 10:25 pm) I've heard that Toyota will replace the screens as there appears to be a problem. Not sure if a stuck button is the answer. It appears to be quite isolated from other sites I've visited.
#79 of 752 Screen Failure not a Prius-Only Problem by tempusvn Apr 28, 2005 (4:52 am)
Replying to: ncarolina (Apr 27, 2005 10:09 pm) Toyota uses that same MFD screen on other vehicles, and the lockup is occuring on all of them. The TSB covers replacement of the screen, which fixes the problem. For those interested in parts prices, apparently the touch screen new costs around $2K and a remanufactured one costs around $400 if you were paying for it yourself. If you have access to it, the TSB is EL002-05 "Multi-Display Functions are Inoperative" Warrantee time to replace the display is .2 hours so it's not a biggie. I'd post a link to the TSB but it would be deleted. However, if you search around you can find it posted a number of places. Replies to this message: stevedebi (Apr 28, 2005 11:05 am) Sylvia (Apr 28, 2005 7:17 pm) ncarolina (Jun 04, 2005 6:23 am) john1701a (Jun 04, 2005 7:02 am) templedancer (Jul 29, 2005 3:52 pm) falconone (Jul 29, 2005 5:14 pm) gagrice (Jul 29, 2005 7:02 pm) railroadjames (Jul 29, 2005 7:08 pm) mincha24 (Sep 10, 2006 5:54 pm)
#80 of 752 Re: Screen Failure not a Prius-Only Problem [tempusvn] by stevedebi Apr 28, 2005 (11:05 am)
Replying to: tempusvn (Apr 28, 2005 4:52 am) "I'd post a link to the TSB but it would be deleted. However, if you search around you can find it posted a number of places." NOTE FOR THE HOST: Would posting a link to a toyota website violate the Edmunds link policy? (of course, he may have been thinking of posting to a different forum). Replies to this message: Sylvia (Apr 28, 2005 7:17 pm)