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"Hold steering wheel"??

Discussion in 'Gen 4 Prius Main Forum' started by dslomer64, Jan 21, 2017.

  1. dslomer64

    dslomer64 Member

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    I got this message today. I was holding the steering wheel. What does it mean/why do you think I got it?

    Gen 2 (2006) and Gen 4 (2017)
     
  2. alanclarkeau

    alanclarkeau Senior Member

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    Were you holding your wheel firmly? Were you awake?
    upload_2017-1-21_15-58-7.png
     

    Attached Files:

    #2 alanclarkeau, Jan 21, 2017
    Last edited: Jan 21, 2017
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  3. WilDavis

    WilDavis Senior Member

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    Reading this thread, reminded me of growing up in the UK in the 1960s, and this being on the radio:


    Now how about that for an ear-worm! :eek: ;)
     
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  4. Moving Right Along

    Moving Right Along Senior Member

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    I agree with alanclarkeau. Sounds like an automated driving safety warning to me. Everything Toyota sells in model year 2017 or after has a lot of automation features standard.
     
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  5. alanclarkeau

    alanclarkeau Senior Member

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    Thinking about it - I think you get this alert:
    upload_2017-1-21_17-2-16.png
    if you've dozed off.

    Whatever, it's probably part of the Lane Departure Alert system.
     
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  6. robsnyder20

    robsnyder20 Active Member

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    I get that also, usually for a split second, till the system noticed I moved the wheel ever so slightly again (it thinks you aren't holding on to the steering wheel and I think thats because you're not moving it), it will beep if you don't do anything as well after a bit.
     
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  7. hyhi

    hyhi Member

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    It happened to me on my ga trip. With no cars around me on the highway I allowed the vechile to travel without my hands on the steering wheel, With my hands not touching but ready to take control.

    As the car begin to sway right into next lane (interstate highway) the LDA system displayed I was moving into a wrong lane then began to move car back into my lane. In just a bit the car moved to the left and did the same correction back to my lane though believe it then displayed the message to put hands on the wheel.
    At least that was my experience.

    Thus automated driving though I would offer much more a safety thing then the Prius being able to drive itself like a Tesla.

    That is way you feel the steering wheel pull against you a drop also, if you change lanes but fail to use a turn single.
     
  8. au_prius

    au_prius Australian Prius Driver

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    It's to deter people from relying on the LDA as a pseudo "auto pilot" device and try to drive hands-free. The LDA does provide small steering corrections to nudge the vehicle back into line if you deviate over the lane markings, but not enough to actively steer the car, like other manufacturers' systems (e.g., Tesla, Mercedes-Benz).
     
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  9. I'mJp

    I'mJp Senior Member

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    LDA puts little pulls to the left and right on the steering wheel. If there is no resistance, the wheel moves with the pulls, it declares "hands off".
    You might have been holding it, but went with the little pulls that LDA does, and tricked it into thinking there were no hands on.

    In other words, if there is no motion on the steering wheel other than the stimulus that LDA provides, it concludes that no one is holding the wheel.
     
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  10. dslomer64

    dslomer64 Member

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    Now, what would be the point of showing the message to a snoozing driver? Duh.

    Gen 2 (2006) and Gen 4 (2017)
     
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  11. I'mJp

    I'mJp Senior Member

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    Sounds the alarm, but your right, same sense as having braille instructions in a drive -thru.
     
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  12. dslomer64

    dslomer64 Member

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    I think you highlighted the word that FOLLOWS the key word. I had both hands in my lap, as BOTH shoulders are hurting, and I was steering with a finger on a straight stretch of expressway with no traffic around. I didn't see any lane departure alert, but I can't rule it out, since I was probably asleep. (OI see orthopedic surgeon Wednesday.)

    Gen 2 (2006) and Gen 4 (2017)
     
  13. RCO

    RCO Senior Member

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    Alan was joking, guys! Actually the light comes on if LDA detects no input from from driver after a preset interval. :ROFLMAO:
     
  14. alanclarkeau

    alanclarkeau Senior Member

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    Funnily enough - non I didn't highlight it. I did a search for "HOLD" in the PDF manual - it was still highlighted from the search when I "snipped" the screenshot. You're right - the word firmly is the operative. I believe that the system senses whether the wheel has been being moved according to an algorithm in the computer - which is probably sampled on a 36yr old male 5'11" holding the wheel on a road which isn't dead straight and flat with a grip at 9:30 and 2:30 on the wheel. Less movement than the algorithm makes the computer a bit edgy - I think I read that it also logs it.

    And, yes, with the coffee cup, I think it buzzes, beeps - (though I think a loud snore might be more appropriate).
     
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  15. drysider

    drysider Active Member

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    You mean that isn't the Starbucks Ahead warning??
     
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  16. I'mJp

    I'mJp Senior Member

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    Could be done.

    In my Garmin GPS I've uploaded a POI containing all Bars in the USA. My gps will alert me when I'm close to one with a "Beer nearby" notification.
     
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  17. dslomer64

    dslomer64 Member

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    FYI/FWIW, I got the message again while quite firmly holding the steering wheel with ONE hand. "TEN AND TWO, SONNY"?

    Gen 2 (2006) and Gen 4 (2017)
     
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  18. The new Start button, standard on the V :ROFLMAO:
     
  19. Zardoz

    Zardoz Member

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    Perhaps there is a calibration for this. I have started to get this error on a routine basis. At LEAST once a day. In all cases both hands have been on the wheel...
     
  20. RCO

    RCO Senior Member

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    Perhaps the camera detects you've wandered close to, or across a lane line without signalling first. It can get very techy in those circumstances.
     
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