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Unintended Acceleration - Find the Cause

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  • srs_49srs_49 Member Posts: 1,394
    One of the things I noticed is that on the slides discussing BTSI, everything was oriented towards automatic transmission equipped vehicles.

    I'm curious - does anyone know if there have been any UA incidents involving manual transmission cars?
  • iluvmysephia1iluvmysephia1 Member Posts: 7,709
    excellent question, and one that shouldn't spark any controversy, just give us all some more information to grind our teeth...I....I mean knaw over, I mean kindly consider in this ongoing automotive issue. Anyone know?

    With 90% - 95% of all automotive sales being automatic transmissions these days, dollars ta Winchell's glazed donuts these UA incidents involve pert-near all automatics.

    2021 Kia Soul LX 6-speed stick

  • wwestwwest Member Posts: 10,706
    UA, in the literal sense, is not possible in a manual transmission vehicle as anyone driving one would most certainly know to use the clutch.

    Maybe "engine run-away", but not UA.
  • steverstever Guest Posts: 52,454
    "Electronic problems were not to blame in 58 Toyota crashes reviewed by the National Highway Traffic Safety Administration (NHTSA), Transportation Secretary Ray LaHood and NHTSA Administrator David Strickland told members of the U.S. House Energy and Commerce Committee in a briefing today."

    NHTSA Finds No Evidence of Electronic Glitches in 58 Toyota Crashes (Straightline)
  • tz2026tz2026 Member Posts: 26
    Adds new meaning to "Wipe-Out".
  • tz2026tz2026 Member Posts: 26
    www.softwarefreedom.org/resources/2010/transparent-medical-devices.pdf

    Then there are the easily hacked voting machines.

    The cause was Toyota was unlucky to have people with dyslexic feet?

    And of course there is this hype piece because no automotive company would release unsecured and unreviewed software that could cause major system problems very easily:

    http://blogs.edmunds.com/strategies/2010/08/researchers-show-how-to-hack-tire-pr- essure-monitoring-system.html

    I'm quite sure Toyota's ECMs are of similar quality.
  • srs_49srs_49 Member Posts: 1,394
    The Mercedes R350 cruise control design looks like an abysmal failure from a human factors engineering point of view. Two stalks, right next to each other, which move in the same way (up/down), yet do dramatically different functions.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Interesting. Can you describe this system in a bit more detail. I haven't seen one myself. Are you suggesting that this could cause human error? How so?
  • srs_49srs_49 Member Posts: 1,394
    edited August 2010
    You referring to this, post 1009?

    I looked down once I stopped and noticed that my left hand landed on the cruise control stalk instead of the adjacent turn signal. Thinking that I was signaling for a right turn, I instead engaged cruise.

    I think those words speak for themselves. While it may have been human error, it was a design decision - the placement of the stalks - that made such an error more likely to happen.

    I haven't seen one in person either. I was going by the picture, as to the placement of the stalks.
  • fintailfintail Member Posts: 58,415
    MB has had the cruise stalk next to the wiper/signal stalk for eons (maybe 30 years or more) - it's nothing new for 2010, I've never heard of an issue until this.
  • busirisbusiris Member Posts: 3,490
    All it takes is for one driver not familiar with the setup to cause himself (and maybe others) a huge problem.

    If Toyota vehicles used this arrangement, no doubt there would be more "press" about it, simply due to the much larger # of cars Toyotas on the road.
  • steverstever Guest Posts: 52,454
    "The Toyota EDRs are so unreliable that even Toyota has challenged their reliability in court," said Clarence Ditlow, director of the Center for Auto Safety, told the Washington Post. "Given the demonstrated errors, NHTSA can't rely upon them in its investigation."

    Toyota Skeptical of Data From Its Own Black Boxes (AutoObserver)
  • fintailfintail Member Posts: 58,415
    I don't know...MB sells hundreds of thousands of passenger cars a year these days, more than half a million a year in recent times, most of them likely having cruise. I can see how it could possibly be an issue for someone not used to it, not learning about the car they are driving, or not paying attention..but I haven't heard of it actually being a hazard. This setup has been used for decades.
  • srs_49srs_49 Member Posts: 1,394
    I'm not disagreeing.

    But, in general, you don't put controls for two or more disparate functions right next to each other and of the same shape and method of actuation.

    It would be like having the launch and self destruct buttons for a launch vehicle being toggle switches of the same size and shape right next to each other on the control panel in the launch control room. "...Ooops, sorry, I thought I hit the launch button. Me bad!"
  • fintailfintail Member Posts: 58,415
    I still don't see how this really happened, or if it was a real issue, why someone else hasn't mentioned it loudly in the past 30 or more years. This is a very old design, and the most complaints about it are the systems themselves failing to work after a couple decades.

    The cruise control is actuated by moving the stalk forward and backward, not up and down. So even if you bump the cruise stalk up or down when mistaking it for a turn signal, nothing should really happen. If you're moving it forward and backward when flailing for a signal, I think there are some user issues going on, too. And, I don't know if cruise should engage at low in-city crawling speeds anyway, I have always thought there was a minimum speed for cruise control engagement. I am going to try to replicate this in my own car today.
  • busirisbusiris Member Posts: 3,490
    I still don't see how this really happened, or if it was a real issue, why someone else hasn't mentioned it loudly in the past 30 or more years. This is a very old design, and the most complaints about it are the systems themselves failing to work after a couple decades.

    From the article that started this discussion:

    I'd been behind the wheel of a 2011 Mercedes-Benz R350 BlueTEC for less than 10 minutes when it happened: The vehicle took off on its own as I prepared to make a right turn. And on a downtown street crowded with people, no less. I instinctively stabbed the brakes but still felt like an idiot.

    I looked down once I stopped and noticed that my left hand landed on the cruise control stalk instead of the adjacent turn signal. Thinking that I was signaling for a right turn, I instead engaged cruise.

    This isn't a new issue, since Mercedes has used this steering-wheel stalk setup for years. It's also not the first time I've encountered it, and presumably owners get used to it after a while. But with all the hysteria over unintended acceleration, I can see how this could cause confusion -- if not an accident.


    I can only assume the writer is stating what actually happened to him.
  • fintailfintail Member Posts: 58,415
    edited August 2010
    Yeah, I read the article and what the author claims happened, I just can't say I buy it all.

    I tried this in my own car. As expected, cruise doesn't engage at all under 30mph. You can play with the stalk any way you want, and no response. This is what gets me...why would someone be going over 30 on a pedestrian-packed downtown street? If this did happen under 30, there's an issue...otherwise, I can't get excited, it sounds like a user error issue involving something else. I'd need to see it replicated on video.

    Also, the cruise stalk sits markedly back from the signal stalk. If your hand is up there when turning, you're doing it wrong. This setup has existed for ages, and I don't recall reading about issues with it before. I'd think in something that has existed for so long, in cars that are sold in virtually every part of the world, someone would have complained a long time ago if it was a real hazard. I don't think everything needs to be idiot proofed. There's a potential for error, but IMO not by a driver with a reasonable amount of attention and skill.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    edited August 2010
    I have yet to find (and I look all the time) for any case of electronically caused UA where it was scientifically repeatable by a testing organization or forensic lab. In other words, they get into the suspect vehicle and it happens to the tester.

    Of course, I personally HAVE tested cars (older cars, in the past) with jammed accelerators (mechanical linkages) and repeated the incident---usually a busted return spring, or loose linkage that jammed up.
  • busirisbusiris Member Posts: 3,490
    I'm pretty much in agreement with you on this one.

    Downtown crowded street...30+MPH....90 degree turn...

    Maybe in my Z4 or something similar.

    Maybe he was in downtown Boston.
  • busirisbusiris Member Posts: 3,490
    Ditto....
  • steverstever Guest Posts: 52,454
    edited August 2010
    In other words, they get into the suspect vehicle and it happens to the tester.

    That's rather the definition of a "stray" electronic problem isn't it?

    I wonder if the dealer was able to recreate the screaming engine that the driver was able to coast onto the lot by putting the car into neutral - no foot on the gas pedal.

    I suspect the owner got the shop ticket back with the infamous "could not duplicate" written on it. Dealers can't even recognize squeaky brakes or rough shifting ("they all do that") and you want them to repeat a screaming engine running without benefit of pedal application? :D
  • houdini1houdini1 Member Posts: 8,351
    edited August 2010
    Sorry fintail, looks like a huge issue to me... and you sound like a "denier". I expect to see thousands of these Mercedes SUA issues now that the hysteria has started. Hopefully Mercedes will take Toyota off the hook. :)

    PS-I notice my smiley face has not shown up but it may pop up later !

    2013 LX 570 2016 LS 460

  • fintailfintail Member Posts: 58,415
    Crap, I'm afraid to drive my car now! :shades:
  • fintailfintail Member Posts: 58,415
    If the cruise did engage below 30, there is a valid problem here as I think all cars have such a minimum speed for the feature to work...if not, I chalk it up to operator error. I still can't imagine hitting the wrong stalk...at least in the cars I own, they are not parallel or anything.
  • plektoplekto Member Posts: 3,738
    I guess I am different in that I try to figure out every car before I drive it? :P

    None of my vehicles have had the stalks and levers in the same places. Volvo does it one way(old models were reversed from GM/Ford!), Mercedes another, Buick another(man I loathed those things, but as a college student, what are you going to do?), and so on.

    Failure to understand the complex piece of machinery is no excuse. If you can't understand a modern Mercedes, maybe an old Crown Vic is more your speed.
  • steverstever Guest Posts: 52,454
    edited August 2010
    I try to figure out every car before I drive it?

    It would be interesting (and scary?) to set up shop outside the car rental pickup lots and study how many people take the time to adjust their mirrors and figure out the controls before zooming off.

    There'd be plenty of time to find and interview the drivers as they leave the airport -they're the ones doing U-Turns as they try to figure out where the main road is. :P
  • fintailfintail Member Posts: 58,415
    I'm the same way when I rent a car...I will check out the controls before I drive off, and even drive it around the lot to get used to the brakes and throttle. No doubt many do not do this.
  • houdini1houdini1 Member Posts: 8,351
    edited October 2010
    What happened to all those fancy theories? Did anyone collect? :P

    2013 LX 570 2016 LS 460

  • cloudseedercloudseeder Member Posts: 5
    I heard on the radio about a week ago a spokesman for Toyota saying they were making the cars so if you press the brakes it also slows the fuel, or something. Slows the car anyway. I haven't kept up with this thread so if somebody got paid I wouldn't know. If they had a smidgeon of class they would send everybody a coupon or something. I know one thing I sure could use a pickup but my credit is lacking so there ya go. Keep what I got repaired, I go my way and all the car mfrs can keep going their way, and never the twain shall meet.

    But the car company that runs a we don't care what your credit is holiday would rack up. When Obama had the clunker program I thought at first Hey, that's me (1977 Maverick), but then he tacked on qualifications and more qualifications. One of them was the car's age couldn't go back lower than 1984.

    hahahahaha That's okay. My life doesn't depend on what they offer, or don't.

    I helped them, they don't help me => Normal, all Normal.
  • frankok1frankok1 Member Posts: 56
    There can't be a winner to date. Edmunds.com would not hold it back as lives can be saved, and the NHTSA just announced their study will be reported by late fall.

    It most likely is some single event - see
    http://www.oregonsae.org/Meetings/misra_C.pps

    If they can't find it at least brake override will help.

    Just hope it wasn't a cover up as the Chrysler hatch case according to poster in post no. 1001.
  • iluvmysephia1iluvmysephia1 Member Posts: 7,709
    where sharonkl is and her Diane Sawyer reporting style. I really miss it. I hope our friend is all right. ;)

    2021 Kia Soul LX 6-speed stick

  • steverstever Guest Posts: 52,454
    edited October 2010
    "LOS ANGELES — Toyota Motor Corp. bought back cars from drivers who reported sudden acceleration defects, but the company didn't tell federal regulators about the problem, according to court documents filed in the sprawling litigation against the automaker."

    Court documents: Toyota quietly bought back surging vehicles from owners (Austin Statesman)

    The plaintiff lawyers are calling these cases "sudden acceleration" while the owners seem to be saying their cars are surging after coming to stops.

    More over in larsb, "Toyota Halts Sales of Popular Models - Accelerator Stuck Problem Recall" #3523, 29 Oct 2010 12:28 pm.
  • mkriley1mkriley1 Member Posts: 3
    Toyota bought the vehicles back so that they could run tests on them. After repeated attempts, they could not get the vehicles to accelerate unintendedly. And Toyota did notify the NHTSA of the action. The plainiff's lawyers are grasping for straws now that the NHTSA's own investigation could not yeild even a single instance of UA. The NHTSA concluded that the complaints were driver error.
  • steverstever Guest Posts: 52,454
    Toyota bought the vehicles back so that they could run tests on them.

    Then why swear the owners to secrecy? More straws for the plaintiff's lawyers to grasp at? Sometimes I think this stuff would blow over faster if companies didn't try to play hide the ball.
  • houdini1houdini1 Member Posts: 8,351
    You hit the nail on the head here and very early on. What you said would happen did happen. Good for you.

    2013 LX 570 2016 LS 460

  • iluvmysephia1iluvmysephia1 Member Posts: 7,709
    edited October 2010
    it might just be my giddiness over Toyota's new FT-86 coming out in a year but I have come to think that these SUA problems are all driver imcompetence. I see the crappy drivers out there and the dumb things they do and I think it is really within their scope of driving skill to press the wrong pedal, etc. I am on Toyota's side in this and don't excuse them for trying to cover up errors or problems, or if they're trying to "buy out" problem cars and make former owners swear this whole thing to secrecy.

    image

    But think a minute about it. Why can't investigators duplicate this SUA problem? I know this happens with cars when you take them to the mechanic and bring up a complaint, but come on, why can't the problem be duplicated? Huh?

    Is this Unintended Acceleration tied to Toyota's cruise control systems in their automatic tranny models only, ya thinkin'?

    If I get a 2012 Scion FR-S (how Toyota will market the new FT-86 in the U.S.) I am pretty certain I will get a 6-speed manual transmission in it. From what I've read it's automatic trannied Toyota's that are surging out of control in forward motion, not the stick shifter Toyota's. That's if this problem is really a mechanical problem needing fixing by Toyota at all. Right now I remain unconvinced that it is a problem at all.

    And I am fine with all the work Toyota has done fixing the gas pedals, floor mats and brake surge cut off, etc. They've gotten down to business and addressed every issue they've found needing addressing, that I'm aware of. I'm just not convinced like I was just a few months ago that this is a Toyota ECU software problem of some sort. Now all the fixes have been done for their affected rigs, including the brake pedal override fix. I would not hesitate to buy a new Toyota at this time, and as of about 3 months ago there was nothing in their stable worthy of my attention. That has all changed, baby. :D

    2021 Kia Soul LX 6-speed stick

  • plektoplekto Member Posts: 3,738
    It's simpler than that, really. The fact that you have a clutch makes it essentially impossible that a throttle problem would be any sort of safety concern. Doubly so since you can just drop in into neutral in a second or less.

    Also, you can turn off the engine on most cars with a manual transmission without it being in park first. This is true for most automatics, but some of the new key-less systems aren't so happy with trying to shut it off while in drive.

    Three ways in which you can overcome the problem in a couple of seconds. It's at best annoying if it does happen.
  • houdini1houdini1 Member Posts: 8,351
    Doubly so since you can just drop in into neutral in a second or less.

    You can do the same thing with an automatic if the driver has a brain.

    2013 LX 570 2016 LS 460

  • iluvmysephia1iluvmysephia1 Member Posts: 7,709
    Do you think there's anything to this Toyota SUA thing at all? Is it possibly ECU software?

    2021 Kia Soul LX 6-speed stick

  • srs_49srs_49 Member Posts: 1,394
    Anything is possible. But just because there's a possibility does not make it so, or even likely.

    The possibility of it being SW was discussed in some detail a number of posts ago.
  • steverstever Guest Posts: 52,454
    edited October 2010
    "Toyota is refuting a new court filing that accuses the automaker of secretly repurchasing vehicles in which owners had reported unintended acceleration.

    "Recent news reports have stated that Toyota dealership technicians were able to duplicate customer claims of unintended acceleration," said Toyota late Thursday. "That Toyota repurchased the vehicles in question; and that Toyota failed to properly inform the National Highway Traffic Safety Administration of the situation. Field technical specialists and engineers were deployed in response to reports of two acceleration events that dealer technicians recently observed. At these dealerships, Toyota FTS and engineers were unable to duplicate the condition and the vehicles were repurchased from the customers for further engineering analysis."

    Toyota Denies It Secretly Repurchased Vehicles To Hide Defect (Inside Line)
  • steverstever Guest Posts: 52,454
    I think Toyota is talking about those recent news reports where plaintiff's lawyers said that the techs could duplicate the error. And Toyota is denying those reports.

    It is a bit confusing though.
  • houdini1houdini1 Member Posts: 8,351
    Yes, I re-read the entire article and deleted my post because it was so confusing !!

    2013 LX 570 2016 LS 460

  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Sounds suspiciously like Area 51 and other famous conspiracy theories.

    Doesn't everyone realize that in This Media Age any technician who really experienced this and was suppressed, would by this time have a book out and be on coast to coast TV to pitch it? They could cash in so big on this that they'd never have to pick up a wrench for the rest of their lives.
  • steverstever Guest Posts: 52,454
    Well, that tech still has two months to finish up the paperwork showing what causes SUA and win the million bucks from Edmunds next May. :)
  • steverstever Guest Posts: 52,454
    "Police suspect problems with a Toyota Camry's accelerator or floor mat caused a Utah crash that left two people dead and two others injured.

    [A]uthorities are continuing to investigate whether the recalls and repairs for a short accelerator pad and a sticky floor mat were also completed.

    Croft said investigators' suspect that one of those problems caused the crash."

    Police: Faulty Camry likely caused fatal UT crash (Fresno Bee)
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Uh, terrible thing.

    It will be interesting to see if (once again), when they start exploring the wreck, they find everything in working order again.

    I keep waiting for one of these UI cases to come up with a car that will jam its gas pedal upon request, at least one time, for testers.
  • houdini1houdini1 Member Posts: 8,351
    A couple we know has a new Toyota Venza. The wife was talking to my wife today and told her that they thought the gas pedal was sticking but her husband finally realized that his shoe was on the brake and the gas pedal at the same time. Probably a very common occurrence.

    Another friends daughter just ran her husbands corvette through their garage doors a couple of weeks ago. She was in the driveway, thought she had it in reverse, hit the gas and went forward through the garage door.

    She did not try to blame someone or something else, just admitted she made a mistake. Refreshing.

    2013 LX 570 2016 LS 460

  • phdhyperdphdhyperd Member Posts: 18
    edited November 2010
    Its very simple to an able science tasker,I assure you as to the causation of these anomalies,but certain folks do not want it fixed,so they would not ever at Toyoda Imperialist Mansion pay my consultancy fee.
    They have their pride,you know and those kooks even still commit "Sepeku" over a premium parking space.
    They are under systems attack,and they will never accept failure and a non Japanese Man to provide the fix science,"You'll See"
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