Steering failure?

Discussion in 'Gen 3 Prius Technical Discussion' started by bwilson4web, Dec 6, 2010.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Without citing the source, I understand a 2010 Prius may have suffered a catastrophic steering failure. The usual hypothesis:
    • loss of a wheel
    • linkage failure
    • unexpected steering motor operation
    Can anyone think of another hypothesis? My understanding is the driver was over 80.

    Bob Wilson
     
  2. bisco

    bisco cookie crumbler

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    senior moment?:rolleyes:
     
  3. NoMoShocks

    NoMoShocks Electrical Engineer

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    Loose nut behind the steering wheel.
     
  4. fuzzy1

    fuzzy1 Senior Member

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    Linkage jam or obstruction, possibly temporary?
    Loss of power assist?

    While I wouldn't consider the later to be catastrophic or even serious (experienced it many times in my youth with stiffer-steering cars), it might catch some drivers by enough surprise to make them think the whole steering has failed.
     
  5. xs650

    xs650 Senior Member

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    Driver was turning the radio volume control thinking it was the steering wheel.
     
  6. telmo744

    telmo744 HSD fanatic

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    List of possible answers after the crash:

    - "The T in the center of the steering wheel is not to be always aligned? Oh gosh..."
    - "I don't find cornering in the owner manual...Probably my lawyer will"
    - "My name is Sikes, don't you recognize me from the tele?"
     
  7. Paul58

    Paul58 Mileage Miser

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    Was the 80 year old in the Driver's or Passenger's Seat?
     
  8. bwilson4web

    bwilson4web BMW i3 and Model 3

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    The report mentions some drainage ditches on each side of the road. One hypothesis is a wheel left the road, the driver overcompensated and the vehicle went 'divergent.' In aviation it is called pilot induced oscillations. I've long suspected many of the teenager, single car events are over-correcting for a wheel off the road.

    It would be interesting to read about what is found when the vehicle is examined.

    Bob Wilson
     
  9. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

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    The Prius isn't exactly a hand-built exotic. I regularly lament certain engineering choises that were made in designing this car, but even Prius critics have to admit that it's a well engineered car. Electricly assisted steering has been around for a while now.
    Yeah, there may have been an assembly in error in Aichi but I do not think you can hang this one on the Toyota....sounds more like a dead short between the driver's seat and the steering wheel.
     
  10. xs650

    xs650 Senior Member

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    An elderly couple in their 80s were were out driving in their new Prius. As they were cruising along they came to an intersection. The stoplight was red but they just went on through. Then Maude in the passenger seat thought to herself "I must be losing it, I could have sworn we just went through a red light."

    After a few more minutes they came to another intersection and the light was red again and again they went right though. This time Maude in the passenger seat was almost sure that the light had been red but was really concerned that she was losing it. She was getting nervous and decided to pay very close attention to the road and the next intersection to see what was going on.

    At the next intersection, sure enough, the light was definitely red and they went right through and Maude turned to George and said, "George! Did you know we just ran through three red lights in a row! You could have killed us!"

    George turned to her and said, "Oh, am I driving?"
     
  11. Paul58

    Paul58 Mileage Miser

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    Exactly!
     
  12. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Apparently the police investigators are also calling it a 'mechanical failure.'

    Bob Wilson
     
  13. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

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    That's GREAT news.
    A couple more PR dings for Toyota aught to be enough to drive the G3 prices down next year. Then I can buy one more cheaply for my personal use, instead of relying on my company car! :D
     
  14. bisco

    bisco cookie crumbler

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    one thing about the police, once they have their experts go over a post crash vehicle, there's no question they've determined the correct cause.
     
  15. Paul58

    Paul58 Mileage Miser

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    Didn't you know, most Beat Cops possess dual degrees, Criminal Justice and Mechanical Engineering degrees... That's why they choose Public Service jobs, they pay so well!
     
  16. xs650

    xs650 Senior Member

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    :rolleyes: [​IMG][​IMG][​IMG]