Understanding Toyota Sudden Acceleration

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As the materials and manufacturing engineer with decades of experience with failure analysis of manufactured products, and as the owner of Toyota vehicles, I am saddened by the lack of expertise and insight to share with Congress and the public about sudden acceleration problems.

When the product is not due to systemic design, materials or manufacturing defects, a large and statistically significant levels of problems can occur very quickly. This is definitely not the case with the Toyota problem. With many millions of Toyota models on which another million miles are driven, if the material inherent design or manufacturing errors, then we have seen countless thousands of cases of sudden acceleration. It has literally been going on almost a daily event in the entire country in many Toyota models. But, in fact, more than 1,000 Toyota and Lexus owners have reported that since 2001 his vehicle suddenly accelerated on its own. This is a tiny, minuscule percentage of Toyotas.

This rare car has not escaped the problem is analogous to a severe case of bacterial contamination of the main food product causing thousands of cases of food poisoning in a relatively short period. It's even harder to find the cause.

understanding of this type of damage also means that the so-called solutions replacing carpets and gas pedals are sheer nonsense. Indeed, it did not surprise me to read today that it has already been cases of sudden acceleration in cars that received repairs from Toyota. More than 60 Toyota owners have complained to the National Highway Traffic Safety Administration about cars already repaired under the two major Toyota recalls, claiming that they are not fixed and muffler can still race out of control.

While recognizing the agony and suffering of sudden acceleration accidents and deaths also need to appreciate the statistically rare occurrence of this problem. Only in this way it is possible to understand that the ultimate explanation - and solution - that the sudden acceleration problem will be non-systematic lack or defect in a critical component. In other words, any random errors in the material or some unusual and rare variation in the production process of some critical components. Just such a situation can logically explain so few sudden acceleration problems in so many millions of cars are doing for many millions of hours and miles.

In my professional opinion, the likely scenario is a defect in a semiconductor chip used in electronic kontrole.Kvar that caused a rare defect in materials or manufacturing process that would not have appeared in the routine quality control testing of raw materials or components . That so many different Toyota models over many years, were found defective indicates the likelihood of the problem components made in some factory that has been used for some time. Moreover, the lack of obvious does not usually impair performance of the vehicle, but only manifests itself under certain rare conditions, as yet undetermined.

Rita Taylor Fort Worth, Texas experienced fled acceleration, took her car Toyota dealer, and the carpets uklonjen.Nekoliko months later she was still a frightening escape episodes. Ditto for Eric Weiss in California, which also had a second episode after the first months after the removal of carpets. Others who did not die, and kept using their Toyotas have also had to repeat the event. Therefore, it is quite normal performance of vehicles is possible between runaway events.

Make no mistake, the exact cause of such sporadic event is incredibly difficult to pin down and even harder lijek.Iznimno intensive and costly investigation is necessary. This is the classic needle-in-haystack problem.

If my thinking is correct, then it is sheer folly to believe that replacing carpets or gas pedals can solve the sudden acceleration problem. However, there is one aspect of a sudden acceleration problem that is crystal clear and, in some way, even more aggravating than the acceleration problem. To overcome the absence of a system that absolutely prevents fuel injected engine when the brakes are working, as the car accelerates. It is gratifying that the federal government is seriously considering it seeks to override the system in all vozilima.Učinkovit system can be overridden in the long run, be faster and more cost-effective solution than chasing-the-defect strategy, especially for equipment many millions of vehicles.

Also, finding the cause of sudden acceleration problem requires a standard methodology for the analysis of failure, namely to obtain absolutely every Toyota vehicle that has experienced sudden acceleration. Then carefully examine the microscopic and other types of analysis and testing of all critical components of electronic systems (so-called Toyota Electronic Throttle Control System with intelligence). Think of it as an autopsy.

It does not seem to have done. On the contrary, the company hired by Toyota tested several ordinary vehicles and parts. One of the main exponents by the report did not examine any vehicles or components that are unintended acceleration. It makes no sense at all if the defect is rare and, therefore, his finding that nothing wrong is absurd. Above, it is an illusion and a distraction.