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Strange brAKE pulse when driving in heavy snow

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by ssdesigner, Dec 12, 2016.

  1. Coast Cruiser

    Coast Cruiser Senior Member

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    It's kind of odd that you can't be going more than 19 miles an hour, for the pedestrian collision to work.
     
  2. Prodigyplace

    Prodigyplace Senior Member

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    For 2016, you are correct. For 2017, all come with TSS-P
    Toyota Safety Sense™ P (TSS-P) —
    Pre-Collision System with Pedestrian Detection (PCS w/PD),
    Lane Departure Alert with Steering Assist (LDA w/SA),
    Auto High Beams (AHB)
    and Full-Speed Dynamic Radar Cruise Control (DRCC)
     
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  3. Coast Cruiser

    Coast Cruiser Senior Member

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    Thanks. That is correct. ssdesigner has the basic Two model with no sensors.
     
  4. Prodigyplace

    Prodigyplace Senior Member

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    OK, sorry.
    I thought you were talking about me & my 2017 Two
     
  5. Coast Cruiser

    Coast Cruiser Senior Member

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    I think we have determined that the OP does not have collision sensors on his 2016 basic Two model.
    He must have felt the traction control kick in.

    It's very interesting to see how the Prius performs in snow conditions. Jetlash didn't mention what brand of tires he has on his Two. But I would definitely get snow tires if I lived in that type of weather.


    Double merge


    I know your new car has them prodigy. I wish I had waited now, and bought a 2017.



    Merged




    But I'm confused about something. In the video, he said the pedestrian detection system will only work at speeds of 19 MPH or below.

    How does the dynamic radar cruise control work? Does it slow down your car, or stop your car at any speed?
     
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  6. RCO

    RCO Senior Member

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    The pedestrian detector is camera based as far as I know.
     
  7. Coast Cruiser

    Coast Cruiser Senior Member

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    Thank you.
     
  8. krmcg

    krmcg Lowered Blizzard Pearl Beauty

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    Yes any speed. And brings the car to a full stop.
     
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  9. wrprice

    wrprice Active Member

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    Any speed, down to a stop when it's following a leading vehicle. The radar can only "see" a few hundred feet in front of the car. Keep in mind how long your stopping distance will be at any given speed. If you're paying attention, you will see stopped or slow traffic ahead long before the radar does. Don't wait to let DRCC (really the PRE-COLLISION System at that point) slam on the brakes.

    Search for some of the automatic braking test videos. It's iffy as to whether the car can completely avoid a collision when the delta-V to the approaching object ahead is above 35 MPH.

    DRCC does very well at pacing a car ahead, and slowing down with it assuming that vehicle is reacting appropriately for the situation. Of course if that car were to slam full speed into a brick wall, your car probably will too.
     
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