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Embedded Expert: No Pedal Misapplication in Toyota Case

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Charles Murray
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Blogger
Re: Re : a software glitch after all
Charles Murray   12/11/2013 7:31:02 PM
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Agreed, AnandY. It's getting tougher for engineers to keep an eye on those "minor details" (especially when there are hundreds of thousands of lines of code), but they have to do it.

AnandY
User Rank
Gold
Re : a software glitch after all
AnandY   11/24/2013 12:13:01 PM
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We have to understand that motor vehicle design, especially high end motor vehicle design, is a complex process and its hard to keep tabs on every part of the process. In addition, most of the process is automated and a simple glitch in any could have devastating effects such as the one witnessed in the 'acceleration mishap'. This is a wakeup call to designers not so keen on the minor details.

Parris Boyd
User Rank
Iron
Re: What has been proven?
Parris Boyd   11/18/2013 12:44:23 PM
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"Critic," it's time to stop trying to blame drivers for Toyota's lousy products. Time to face the fact that a jury heard expert testimony and found Toyota guilty by a "preponderance of the evidence," which is the legal terminology for the burden of proof in a civil case. The jury was obviously adamant because it went even further, stating that Toyota showed "reckless disregard" for Plaintiffs rights. Recall King Toyota has left a broad swath of destruction, featuring deaths, injuries, and at least one unjustly imprisoned Toyota driver who was finally relaesed after the facts were exposed. Talk about consumers paying a price...   

Critic
User Rank
Platinum
Re: What has been proven?
Critic   11/18/2013 11:38:01 AM
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The locked wheel proves that the brake system was at least partially functional.

The 150-foot skid mark proves that the driver had enough time to turn off the ignition and shift to neutral.  Oh, she had enough time to apply the emergency/parking brake?  Apparently she didn't know the proper procedure for stopping the car!!!

Most cars don't stop themselves- this is the driver's responsibility.  Why didn't she push harder on the service brakes???  She was too weak?  Maybe she should not have been driving.  Maybe she had already ridden the brakes, instead of stopping the car.

Maybe there was something wrong with the car, maybe there was not.  We don't know with 100% confidence.  It's wrong to take one side or the other, except in a civil lawsuit, where the burden of proof is only "more likely than not."

Unfortunately, we consumers are going to pay the price for these lawsuits, regardless of what really happened.

tekochip
User Rank
Platinum
Re: A software glitch after all
tekochip   11/12/2013 9:03:18 AM
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RTristani  you are correct and that's good information to have!  Here's a link to the article:

 

http://www.caranddriver.com/features/how-to-deal-with-unintended-acceleration

 

Even at 120MPH they were able to bring the car down to 10MPH at full throttle before the brakes started smoking.

OLD_CURMUDGEON
User Rank
Platinum
Re: MY two cents....
OLD_CURMUDGEON   11/12/2013 7:48:30 AM
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Ratsky:  Thanks for the heads up.  We have friends close by who have bought & sold HYUNDAIS for the past 10+ years like most people change their socks.  Not exactly sure why, since I never hear any negative comments.  Maybe they just like the "experience" of buying a new vehicle every year or so.

There's a local HYUNDAI dealership in this west central FLA area that inundates the area w/ mail advertising.  There isn't a week that passes that we don't receive at least one or more "SUPER SALE EVENTS of the Century", etc.  Too bad there aren't laws restricting or clamping down on boasting!  This dealership would win the Grand Prize every year.

Funny thing is that the old location of the TOYOTA dealer is almost directly across the highway from the HYUNDAI dealer.  So, you can imagine the competition!!!

To tell you the truth, I've seen a drastic change in the attitude & daily operation of the TOYOTA dealership, and from my perspective, I can't say that I'm pleased with it.  Buying a new vehicle in the coming years is going to be a scary event, I have the feeling.  And, now with the vehicles becoming almost human-like in their intelligence, that scares me even more.....

 

RTristani
User Rank
Iron
Re: A software glitch after all
RTristani   11/12/2013 7:21:01 AM
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One magazine, I think it was Car and Driver, did a test of this.  Even a supercharged Roush Mustang, traveling at freeway speed, with sudden application of brakes and throttle came to a full stop.  Their conclusion was that no ordinary car's engine, even with the car moving at freeway speed, was going to overcome its brakes.

Charles Murray
User Rank
Blogger
Re: A software glitch after all
Charles Murray   11/11/2013 6:51:58 PM
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Absolutely true, Rob. But as I'm sure you know, it was not true in 2002.

Charles Murray
User Rank
Blogger
Re: Evidence
Charles Murray   11/11/2013 6:39:06 PM
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No, Greg, they were not able to demonstrate the skid mark conclusion on a dynamometer. Measurements made at the accident scene served as the evidence. The 150-foot skid mark was believed to be far too long and the reduction in speed far too small if the driver was not fighting an open throttle, this expert said.

Ratsky
User Rank
Platinum
Re: MY two cents....
Ratsky   11/11/2013 2:57:24 PM
NO RATINGS
I hate to say it, but my wife's car is a Hyundai Sonata (2006), and our experience with that dealer are much worse!  I've posted before about our adventures with that car's "designed by monkeys" airbag system, and the fact that the "fix" on the recall notice involved removal of the front passenegr seat and shipment to the factory (in California) so they could change out the (not reflashable) seat micro.  Kicker was this did NOT fix the problem.  NHTSA finally forced them to take action beyond a recall: what Hyundai did was send out a glove box label telling the passenger to set the seat fully upright, in the center of fore-aft range; otherwise the airbag would likely be disabled in the event of a crash!  Cross another brand off my list.....

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