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Lane keep assist?

Discussion in 'Gen 4 Prius Technical Discussion' started by Runningkiya, Sep 7, 2016.

  1. MikeDee

    MikeDee Senior Member

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    Mine doesn't work at night, often fails to detect the lane lines/Botts dots, and sometimes gives false alarms. Rarely do I ever feel the steering assist; which is so slight it's pretty useless. In summary, I give LDA on my Prime an "F" rating. Maybe something is wrong with it or maybe that's the way it's supposed to be. When I take it in for the 5000 mile service, I'll complain about it.
     
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  2. RCO

    RCO Senior Member

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    I played around with all the settings the other day and changed the sensitivity of LDA from Standard to High. With LDA selected then crossing the white line on the road caused the steering to nudge me back as well as beeping. Because the sensor is optical the camera (behind the rear view mirror) must be able to see the lane markings distinctly. Poor markings may not be detected and using the normal setting has minimal steering correction - just the warning as far as I know.
     
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  3. cproaudio

    cproaudio Speedlock Overrider

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    Really? Mine works best at night because shadows from trees and other cars during the day often cause the camera to lost track of lanes. I have more confidence in the system at night than during the day.
     
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  4. bestmapman

    bestmapman 04, 07 ,08, 09, 10, 16, 21 Prime

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    I was surprised how much i like it.
     
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  5. ETP

    ETP 2021 Prime(Limit),24 Venza Limit,B52-D,G,F,H

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    Speed related. 45 is not optimum. 55 and up it works great.

    However, quality of lines makes a big difference. Not sure why as sometimes faded lines work better.

    On a long trip between surgeries and use a towel to increase the lumbar action.
     
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  6. Michael Ge

    Michael Ge New Member

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    I'd like to propose we all sign a petition to Toyota that they make the steering assist work like it does on the other Toyota models. Anyone want to join me?
     
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  7. alanclarkeau

    alanclarkeau Senior Member

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    Bit late now - the design won't change till at least the mid-cycle update or more likely next model. It certainly won't affect cars already sold - TOYOTA doesn't work like that - TESLA is about the only one.

    Our road networks aren't yet marked well enough for it to be totally consistent, but it certainly works as designed.
     
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  8. kithmo

    kithmo Couch Potato

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    I turned mine off, it was so annoying driving home from the pub :whistle:;)
     
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  9. RCO

    RCO Senior Member

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    Yeah, that and the coffee cup together! :confused:
     
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  10. pilotgrrl

    pilotgrrl Senior Member

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    I like the coffee cup, it's very Japanese. I can only imagine what an American car would say before it pulled off the road and refused to start.

    Posted via the PriusChat mobile app.
     
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  11. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

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    I believe @alanclarkeau here was looking for the Qi coffee maker option. :LOL:o_O
     
  12. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    I'm thinking similarly. I intentionally cut over some "lane lines", say an oncoming left turn lane that's jutting out: if there's no oncoming traffic I'm less inclined to slavishly follow the zigs and zags, will intentionally clip it, and wouldn't want a "nanny" nudging me back, beeping. Same thing with winding roads out of town, with clear visibility and no oncoming traffic, again: I'll sometimes intentionally go over the line a bit.
     
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  13. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

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    I believe it does not warn if you are using your turn signal.
     
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  14. RCO

    RCO Senior Member

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    True but you'd not use that to just cut the corners with no other traffic about.
     
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  15. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Yeah, following my "racing line"... :whistle:
     
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  16. Tideland Prius

    Tideland Prius Moderator of the North
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    It won't say anything :whistle:

    You can turn it off. Only turn it on if you're going to be driving on the highway.
     
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  17. kithmo

    kithmo Couch Potato

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    I don't think it really works like that. It's intended for use on highways, i.e. straight or slight curves, it scans the road ahead. On a corner or sharp bend it can't see that you're cutting the corner, on a longer curve it maybe could as it takes into account the amount of steering (yaw rate) you are applying to determine if it will warn you.
     
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  18. alanclarkeau

    alanclarkeau Senior Member

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    I flick it off on mountain roads, keep it on the rest of the time.
     
  19. RCO

    RCO Senior Member

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    @kithmo - It really does. It's when the camera detects you're crossing the white line without prior signalling that is the trigger. If the line is not clear or not present, then it won't!
     
  20. kithmo

    kithmo Couch Potato

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    But if the curve is tight then the camera won't see the line, even if the line is clear, because it's outside the camera's field of vision.
     
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