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#1 (permalink) Old 05-16-2005, 02:21 PM
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Default Programming Error - Vehicle Shut Down

I read today that owners of some 2004 and 2005 Prius cars have reported that the car shut down while driving. The car had to be towed to the dealer for repair.

According to the article, Toyota spokesman Sam Butto said the automaker identified a programming error in the computer systems of 23,900 Prius cars last year. He said that last May (2004) Toyota sent owners of those cars service warnings telling them to go to their dealerships for a software upgrade.

Does anyone have a copy of the letter Toyota sent to the customers?

Thanks...
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#2 (permalink) Old 05-16-2005, 02:51 PM
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You are referring to ssc-40D, and that was mainly to have the diagnostic codes compatable with industry standards.

There have been a few recalibration bulletins, but not recalls. Most can restart the car after a few tries and drive to the dealer to get the update. Some haven't gotten the update after getting it restarted and the problem never resurfaced.
Kyle indicated there is another calibration code coming out that is already in new ECMs, but hasn't been posted on Techinfo. Toyota tries to balance and find tune gas mileage with low emissions, and sometimes that causes the engine to start just a tad late.
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#3 (permalink) Old 05-16-2005, 03:01 PM
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So, has the 'software glitch' mentioned (can't get to PriusChat for the full story link) actually been tracked down and fixed?

I'm willing to trek to the dealer again to avoid being towed...

Ah. Here we go, from another post here: http://tinyurl.com/9gkvs

I'm guessing they just have a name for the problem and not a ready solution...

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#4 (permalink) Old 05-16-2005, 04:25 PM
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I read the Wall Street article which is a bit of a jolt to 2004 Prius owners. Luckily mine is a recent model. But why is the article only coming out now? Did this computer software glitch occur only after a few months driving, or is it only now that Toyota is admitting the problem? That wasn't addressed.

Don't put off till tomorrow what you can do today.

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#5 (permalink) Old 05-16-2005, 05:02 PM
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How will you know if you car has that software problem and is there a way to check.

I did not receive a notice from Toyota. I got my car April 23rd but the manufactor date might be different.

2005 Prius #BC Driftwood Pearl owner (4/23/2005) 52.6 MPG
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#6 (permalink) Old 05-16-2005, 06:44 PM
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Default article here

http://www.priusonline.com/viewtopic.php?t=4916

http://online.wsj.com/article_email/0,, ... m4,00.html

which seems to have been picked up elsewhere... http://money.cnn.com/2005/05/16/Autos/p ... /index.htm

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#7 (permalink) Old 05-16-2005, 07:02 PM
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if you are concerned, get your VIN and call Toyota and ask if it is covered in the SSC.
1-800-GO-TOYOTA (1-800-46869682)
or as found in the latest SSC owner notifications:
Toyota Customer Experience Center:
1–888–270–9371 Monday through Friday, 5:00 am to 9:30 pm, Saturday and Sunday 7:00 am through 3:00 pm Pacific
Standard Time.

SSC-40A was the first reprogramming for the 2004+ Prius (which superceded/obsoleted a TSB). SSC-40A has since been superceded by SSC-40D, which I'm attaching the owner notification letter. According to the SSC-40D dealer notification:

Quote:
Identification of Involved Vehicles
Nationally, there are approximately 23,800 Model Year 2004 Prius vehicles involved in this special service campaign.
YEAR MODEL VIN Range VDS Range
2004 Prius KB20U 40001086 – 40053733
2004 Prius KB22U 40001142 – 40053728
NOTE: Not all vehicles in the VIN ranges are involved in this SSC. Always consult Dealer Daily or TIS to confirm VIN eligibility and to assure the SSC is applicable. This will verify the vehicle is involved and has not already been completed by another dealer or prior to dealer delivery. TMS warranty will not reimburse dealers for repairs conducted on vehicles that are not affected.
However, there is currently another TSB out that supercedes the SSC-40D programming, for a similar engine stalling condition (you run on battery only until you pull over...)... (TSBs are only performed if your car is exhibiting a certain problem - it's not a proactive mailing like a SSC.)
http://autos.groups.yahoo.com/group/toy ... 047-04.zip or http://www.alldata.com/tsb/Toyota/10980 ... index.html
US TSB EG047-04
Feb. 22, 2005 revision of Oct. 18, 2004, M.I.L. "ON" DTC P3191, P3190, AND/OR P0A0F, 2004-2005 Prius. Replaces TSB EG027-04. (engine does not restart - reprogram the Engine and HV Hybrid ECU after performing the SSC 40D reprogramming.)
Attached Files
File Type: pdf 40downer.pdf (7.7 KB, 169 views)

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#8 (permalink) Old 05-16-2005, 07:15 PM
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Seeing as how this is old news, I rather suspect some news planting by, ahem, those who do not yet make a competitor to the Prius.

2005 Seaside Pearl, BC#6
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#9 (permalink) Old 05-16-2005, 07:33 PM
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Quote:
However, there is currently another TSB out that supercedes the SSC-40D programming, for a similar engine stalling condition (you run on battery only until you pull over...)... (TSBs are only performed if your car is exhibiting a certain problem - it's not a proactive mailing like a SSC.)

Isn't this problem serious enough to merit a so called proactive mailing? If this happens in the middle of Wyoming, for example, it would be inconvenient to say the least.

Nothing in the SSC-40d would have led the recipient to believe that there was a serious problem. There is nothing in the letter that informs the owner that their car's ICE may shut down in the middle of a highway. Or, am I missing the intent of SSC-40d?

Admittedly, a prudent owner would always go to Toyota for the required reprogramming. But it seems as though Toyota should be more clear as to the possible dangers ineherent in not getting the reprogramming.

Regarding the new TSB. Is it applicable to both the 2004 and 2005 models. SSC-40d was applicable to 2004 models.

Assuming that 2005 models had the reprogramming prior to release, is there some additional programming applicable to 2005? I guess the TSB you mentioned would take care of this.

FWIW, there is just one 2005 model listed with the stalling prolblem in the NHTSA database, Here it is.

[quote:2tdkmgc6]I WAS DRIVING MY 2005 TOYOTA PRIUS AT ABOUT 45 MPH WHEN THE VEHICLE WENT DEAD. THE BATTERY CHARGE INDICATOR WENT TO ZERO, THE ENGINE WARNING LIGHT CAME ON, THE MASTER WARNING LIGHT CAME ON, THE VEHICLE STABILITY CONTROL WARNING LIGHT CAME ON. I PULLED TO THE SIDE OF THE ROAD. AT FIRST THE VEHICLE WOULD NOT SHUT OFF. AFTER SEVERAL ATTEMPTS THE VEHICLE SHUT DOWN. I RESTARTED THE VEHICLE, AND WITH THE ENGINE SERVICE LIGHT ON WAS ABLE TO GET IT FIRST HOME, THEN TO A TOYOTA DEALER. THE DEALER SAID THE VEHICLE NEEDED AN "UPGRADE" TO ITS SOFTWARE AND REPROGRAMMED THE ECU. ( AT NO CHARGE TO ME AS THE VEHICLE IS STILL UNDER WARRANTY). IF AN UPGRADE WAS AVAILABLE AND REQUIRED, I FEEL I SHOULD HAVE BEEN NOTIFIED SO THAT I AND MY WIFE WERE NOT PUT AT RISK. *NM
[/quote:2tdkmgc6]

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#10 (permalink) Old 05-17-2005, 01:01 AM
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I completely forgot about SSC-40E. That would lead to a stalling condition. SSC-40E put some weatherstripping under the hood, to keep water from entering the engine compartment and stalling the engine...

[edit: added the owner notification letter for LSC-40E]
Attached Files
File Type: pdf 40eowner.pdf (16.4 KB, 127 views)

-- Michelle Vadeboncoeur, mrv@kluge.net
2001 Aqua Ice Opalescent
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fuel stats: http://www.kluge.net/~felicity/prius.php
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