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Toyota Camry, Toyota RAV4, Toyota Highlander, Toyota Corolla, Toyota Avalon, Toyota Tundra, Toyota Sequoia, Pontiac Vibe, Automotive News
#320 of 3623 Video - The Pedal in Question Assembly Demonstration
Feb 01, 2010 (10:55 am)
I am just passing theses videos along for individuals to review and help explain in basic/nonprofessional language how pedal in question is assembled, functions, etc. Video is quite informative, especially if you have even a small degree of knowledge/experience about computer technology and the little bugs that can occur and can be difficult to pinpoint/and/or correct. Yes, multiple computer technology systems are undeniably a part of the sequencial steps of process in pressing gas pedal to ultimately the actual engine acceleration.
This below video is great - done by Consumer Reports Auto Engineer on auto comparison between a Toyota and VW - HOW TO STOP YOUR TOYOTA. I did like the VW demonstration that has brake override system so vehicle can always be stopped. I do not personally like VW autos, but did like how brake override system works, and how it appears to be great safety device for any possible problems with unexplained accleration problems. AS MEDICAL PROFESSIONAL I FEEL THIS IS MUST WATCH FOR ALL OF US.
Toyota is not the only auto manufacturer that has higher complaints than other manufacturers. But their complaints do seem higher than other auto manufacturers per government statistics. Since I own a 2006 RAV4, I am very interested about the issues and my own safety. My vehicle is not among the recalls, but have had intermittant minor unexplained increases of aceleration incidents - all could be controlled though. I am not sure my vehicle issues are related, but feel I must stay informed and be knowledgeable for my own safety. Presently I have no intention of trading my vehicle in. But I can not honestly say my position will not change if problems increase and/or cannot be taken care of.
Good luck to everyone.
#322 of 3623 Re: another when it rains it pours story [graphicguy]
Feb 01, 2010 (11:20 am)
CTS, while seemingly admitting to their gas pedal sticking or binding, is denying responsibility for these WOT run-a-way engine episodes. So Toyota continues, must continue, to look elsewhere for the primary causative factor.
Until that time comes any vehicle of asian manufacture that uses the same parts and firmware design source (NipponDenso/Denso US) as Toyota/etc will remain "suspect".
The way Denso has been known to operate in the past not even Toyota may ever know what the problem was/is, nor the FIX. I would imagine the fix will come as a "reflash" with a public announcement that the "reflash" will be to facilitate a failsafe. Failsafe will be to drive the throttle plate to idle when the brake is used but also "buried" in the reflash will be a true fix for the firmware problem that is the root cause of these current episodes.
Does Boeing get to look at, certify, the firmware source code from a parts vendor..?? Possibly....
But I rather doubt that Toyota/etc has access to NipponDenso/Denso US firmware source code, and less likely certification ability. Toyota/etc probably doesn't even have the talent required for firmware source code validation/certification even given access.
Then there remains the question of anomalous behavior, as yet undiscovered anomalous behavior, possibly, of the microprocessor, computing engine, and surrounding/supporting hardware. Anomalous behavior just random enough to be almost, if not altogether, untraceable.
#323 of 3623 Re: Step away from the pedal [kirstie_h]
Feb 01, 2010 (11:24 am)
I applaud you for your objective comments and your apparent attention for screening blog comments.
#324 of 3623 Databank of unintended Acceleration claims
Feb 01, 2010 (11:55 am)
Click on the left to see claims from all sorts of manufacturers
#327 of 3623 Re: "I would imagine" [beachfish2]
Feb 01, 2010 (12:07 pm)
Obviously you have never seen an "errata" sheet for, for instance, one of the X86 processors. Over the past 30 years my software development team has independently found/discovered not just 1 or 2 of these hardware "bugs" and provided the appropriate documentation to the manufacturer so they could added to the errata sheet.
And I'm quite sure we are no alone in this matter.
#328 of 3623 Re: "I would imagine" [wwest]
Feb 01, 2010 (12:28 pm)
To the point that there may be something wrong in the computer(s) that control the acceleration, I offer the computer in my washing machine. It lost its mind a week or so ago when the wash cycle was cancelled. It would not unlock the glass top on the washer. No picking new cycles and starting them would work any miracle and reboot the computer. Pushing buttons to initial new cycle or cancel would do anything.
So I unplugged it for 10-15 minutes. Apparently on a complete restart it bootstrapped the right program into place and the Whirlpool Cabrio operates just fine--until the next time it decides to get lost when a wash cycle is cancelled.
The parallel is that computers are programmed by someone. Despite all the best checks, hopes, prayers over the binary coding, things go wrong. A PC can be rebooted. A washing machine computer required unplugging to drain the memory (little humor there, "drain"). But a car's computer may have a quirk that only occurs on a certain input at a certain conditions within the processor and motherboard. Those are hard to find.
When car computers have a quirk, it is a major danger. A consistent comment in the many reports in various places is that when the car was turned off, everything was back to normal on restart. To me that says not mats in all cases, that says not sticking gas pedal in all cases, but says there's another problem in some cases--scientfic method at work. So various hypotheses can be posited and tested carefully with only one variable changed to allow a conclusion.
#329 of 3623 Prius ('07) Shut down malfunction
Feb 01, 2010 (12:36 pm)
I suspect the Toyota problem is more than a floor mat or mechanical accelerator pedal malfunction.
I own an '07 Prius. For about the first 15-20,000 miles the car always shut down immediately upon depressing the power button. Since then, the engine frequently does not shut down on the first push, and my car will move forward if I take my foot off the brake. I have to push the power button a second time to stop the engine.
The dealer could find nothing wrong and told me the problem was I should be pushing the "Park" button before pushing the Power button to turn the car off. (It says nothing about doing that in the manual.)
I wrote to Toyota, and to my dealer, explaining I was concerned that a computer software or hardware malfunction was the cause of the problem with my Prius. They reassured me there was no danger.
My wife and I continue to drive our car, and I'm careful to be sure the engine has actually stopped before I take my foot off the brake. However, I'm now concerned that the minor problem I'm experiencing could progress into something much more dangerous.
I sure would like to know why my car refuses to turn off with one push of the power button, as it did when I first bought it.