1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Lets talk about the self-driving features

Discussion in 'Gen 5 Prius Technical Discussion' started by priusmouse, Dec 31, 2022.

  1. Sharol

    Sharol Member

    Joined:
    Sep 3, 2023
    127
    60
    0
    Location:
    Kansas, USA
    Vehicle:
    2023 Prius
    Model:
    Limited
    LOL That might be helpful. I spent considerable time working through the settings in the informational display trying to find the setting for notification sounds for the LDA. I couldn't feel the vibration in the steering wheel (my husband can), and I'm used to the tone on the HyCam. The manual was some help, but it still required going through the (extensive) list of settings from the steering wheel controls.
     
    friyet likes this.
  2. peternumber2

    peternumber2 Junior Member

    Joined:
    Jan 10, 2024
    80
    14
    1
    Location:
    Rome
    Vehicle:
    2023 Prius Prime
    Model:
    N/A

    Is there a way to permanently disable RSA?
    It's A BIT invasive.....

    Thanks
     
    Maxwell61 likes this.
  3. AndersOne

    AndersOne Active Member

    Joined:
    Jun 10, 2023
    274
    163
    0
    Location:
    Europe
    Vehicle:
    Other Hybrid
    Model:
    N/A
    peternumber2 likes this.
  4. artieb

    artieb Junior Member

    Joined:
    Sep 29, 2009
    68
    15
    0
    Location:
    medford ma.
    Vehicle:
    2024 Prius
    Model:
    Limited AWD-e
    How do YOU set the CC IN 5-10 mph range in LTA assist?
    Im only 3 days in on 2024 LTD pearl white awd
    Rebadged the rear already gorgeous car
     
  5. Beach Dweller

    Beach Dweller Junior Member

    Joined:
    Dec 30, 2023
    46
    28
    0
    Location:
    The Beach
    Vehicle:
    2024 Prius Prime
    Model:
    XSE Premium
  6. Approximate Pseudonym

    Joined:
    Feb 8, 2024
    103
    49
    1
    Location:
    Colorado
    Vehicle:
    2024 Prius Prime
    Model:
    XSE Premium
    My safety systems stopped working in mild snow conditions on an interstate in Colorado. No big deal, but the cameras/radar were completely clear at the start of the drive, and stopped working 10 minutes into the drive.

    Conditions: right around freezing, overcast, not a lot of actively falling snow.

    Driving surfaces: arterial signaled highway 40-45 mph driven at 35-45 mph, and interstate highway 60-65 mph driven at 55-65 mph. No piles of snow but some small amounts at intersections and on shoulders. Wet and fully plowed roads. Low traffic, not following any other cars closely.

    I didn’t really need the dynamic cruise control, but orange lights and error messages let me know that most of the driver and safety aids had stopped working. I also didn’t drive directly through any snow, so I assume water and dirt caused the failure, not actual snow or ice. The car had been recently washed and has no accumulated dirt from driving, so almost all of the buildup was likely from driving on the local arterial roads.

    When parking, the cameras were barely obscured and were still usable for parking, with yellow error messages warning about visibility. Both parking and safety messages were no longer showing after letting the car sit parked for an hour, since the liquid water beaded off and cleared the sensors and cameras. Also, some models (at least Prime XSE Premium with Advanced Parking) can wash the rear view camera with an auto-sprayer, controllable with the multimedia display.

    To be clear, all of this is working as designed, and the car (over)communicated the problem effectively. The multifunction display even says to check the manual for an explanation, which mentions this issue.
     
    #26 Approximate Pseudonym, Mar 14, 2024
    Last edited: Mar 14, 2024
  7. Hammersmith

    Hammersmith Senior Member

    Joined:
    Jul 26, 2021
    1,301
    1,321
    0
    Location:
    North Dakota - USA
    Vehicle:
    2023 Prius
    Model:
    Limited AWD-e
    You said it was right around freezing. I'm guessing a thin layer of ice built up on the front bumper sensors leading to the errors. At a later point, the temps warmed up just enough to melt the ice before you checked it at your destination(or you drove through an area that had been salted or treated with a deicing solution that got transferred to the bumper). I don't think the system can clear the errors without shutting down the car and restarting, which is why the system didn't turn back on after the ice melted.

    That's my guess, at least. I've never had an error while driving due to snow, but noticeable ice accumulation will do it every time.
     
    fuzzy1 and Approximate Pseudonym like this.
  8. Approximate Pseudonym

    Joined:
    Feb 8, 2024
    103
    49
    1
    Location:
    Colorado
    Vehicle:
    2024 Prius Prime
    Model:
    XSE Premium
    Sounds about right. Our roads never use salt, so it’s definitely accumulated water/ice/dirt.
     
  9. Sharol

    Sharol Member

    Joined:
    Sep 3, 2023
    127
    60
    0
    Location:
    Kansas, USA
    Vehicle:
    2023 Prius
    Model:
    Limited
    My Limited (not Prime) has the washer on the rear camera, and it is really useful in our weird Kansas weather. I haven't taken her out in heavy weather, but with splashed mud and gunk, it works perfectly.
     
  10. Winston Smith

    Winston Smith Junior Member

    Joined:
    Dec 9, 2020
    27
    13
    0
    Location:
    OH
    Vehicle:
    2021 Prius
    Model:
    N/A
    I have 2.0 in a Corolla hatch. It steers the car back from crossing into the next lane, but it does not keep the car centered. It will ping pong from side to side a few times before beeping at me to put my hands back on the wheel. The adaptive cruise is neat but it turns off when the engine dips below 1K rpm in which ever gear I am in. It's good down to about 30mph in sixth.

    The Prius system in the new ones actually centers the car in the lane; it feels much more precise.

    My garage gave me a Sentra as a loaner a few years ago. I couldn't find the cruise control which was a problem on the highway. This was my first time with a CVT. I couldn't understand why everyone else was driving so slowly, looked down and saw I was going 85mph. I slowed to a less ticketable speed but then a moment later was back up to 80mph. I'm sure the cruise was easy to find if you know where it is.

    The complexity and automaticity are real issues for safety. We all see people who check out while walking because they are hypnotized by their cell phones. Big screens and kinda/sorta self driving cars will almost certainly teach people to be less attentive.
     
  11. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

    Joined:
    May 12, 2018
    7,131
    6,679
    1
    Location:
    Pennsylvania
    Vehicle:
    2018 Prius c
    Model:
    Two
    I've made the argument before that I'm not interested in driver automation as described in SAE levels 2-4. It's just too in-between, and it seems like an ever-increasing portion of it is monitoring and nannying the human driver.

    I'd rather just drive my self right up until the day it does it all.
     
    Jabog6 likes this.
  12. Gokhan

    Gokhan Senior Member

    Joined:
    Oct 5, 2008
    4,605
    1,848
    0
    Location:
    Paramount CA
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    LOL Give it up and upgrade to a modern car.

    PS: That reminds me of people who used to tell me that they would never ever own a smartphone, until they got one a couple of years later and then they were telling me that the smartphones were the best thing in the world.
     
  13. Gokhan

    Gokhan Senior Member

    Joined:
    Oct 5, 2008
    4,605
    1,848
    0
    Location:
    Paramount CA
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    Not sure if everything here is accurate. I have TSS 2.0, and it has full-speed DRCC. Also, there is no P in TSS except in the first version.
     
    Serenity Now likes this.
  14. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    44,896
    16,122
    41
    Location:
    Canada
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Probably wasn’t clear but the 2.5 adds to the full speed DRCC the stop and go function.

    I could add full speed DRCC to TSS-2.0 but certain Camry and RAV4 versions got low speed DRCC in the same model years. You had to get the Camry XLE or higher RAV4 trim levels to get full speed DRCC.
     
  15. Gokhan

    Gokhan Senior Member

    Joined:
    Oct 5, 2008
    4,605
    1,848
    0
    Location:
    Paramount CA
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    DRCC with LTA on my 2021 Prius Prime Limited with TSS 2.0 works in stop-and-go traffic. If the car comes to a complete stop, you have to tap the accelerate to resume, but that is a necessary safeguard to avoid an unintended outcome.
     
    Tideland Prius likes this.
  16. jdenenberg

    jdenenberg EE Professor

    Joined:
    Nov 21, 2005
    3,850
    1,843
    1
    Location:
    Trumbull, CT
    Vehicle:
    2020 Prius
    Model:
    LE AWD-e
    The other issue I have with Prius DRCC is the tendency to come to a full stop on an Interstate when the car in front of me is turning off the highway.

    JeffD
     
  17. Gokhan

    Gokhan Senior Member

    Joined:
    Oct 5, 2008
    4,605
    1,848
    0
    Location:
    Paramount CA
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    Hmm, that does not sound like DRCC.

    It sounds like AEB. I am guessing that something like this would only happen if you are tailgating very close and AEB thinks you are about to crash.
     
  18. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    44,896
    16,122
    41
    Location:
    Canada
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Same as my 2018 Prime. The difference is that on the highway, it does that too while more sophisticated systems can auto restart if you came to a complete stop for a very short time. (Or in the case of my EV6 with HDA-II, it will resume automatically on a designated highway)
     
    Gokhan likes this.
  19. jdenenberg

    jdenenberg EE Professor

    Joined:
    Nov 21, 2005
    3,850
    1,843
    1
    Location:
    Trumbull, CT
    Vehicle:
    2020 Prius
    Model:
    LE AWD-e
    The DRCC was controlling the distance. When the leading car slows down and turns onto the ramp, the DRCC doesn't recognize that the car is no longer an obstacle. I have to step on the accelerator to avoid coming to a full stop (which would be quite dangerous).

    JeffD
     
  20. Gokhan

    Gokhan Senior Member

    Joined:
    Oct 5, 2008
    4,605
    1,848
    0
    Location:
    Paramount CA
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    I don't understand. When the car in front of you is gone, DRCC will accelerate to the set speed by itself. To me this sounds like AEB. Do you see the "BRAKE" message on the MID?