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Well there’s a thing, sudden unintended acceleration just happened to me

Discussion in 'Model 3' started by Marc Roberts, Jun 27, 2020.

  1. Knightshade

    Knightshade Well-Known Member

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    Yup.

    You can tell TACC to always engage at current speed.

    Nothing to fix here except the nut behind the wheel.
     
  2. KenC

    KenC Active Member

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    But wouldn't that apply to every vehicle that uses some variant of adaptive cruise? Did reports of unintended accel increase when adaptive cruise features became available with other vehicles?
     
  3. Gasaraki

    Gasaraki Active Member

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    The braking system is redundant. The computer doesn't accept throttle inputs AND there is a mechanical system. Since Tesla doesn't have a blended system, the mechanical brakes function even if the electronics were all messed.
     
  4. Knightshade

    Knightshade Well-Known Member

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    related story


    U.S. finds no defect in review of 662,000 Tesla vehicles




    It's user error.

    Every. Single. Time.
     
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  5. MP3Mike

    MP3Mike Well-Known Member

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    So NHTSA has finished their review of the SUA Defect Petition and have rejected it, finding after a review of the data, that as expected, it is pedal misapplication:

    https://static.nhtsa.gov/odi/inv/2020/INCLA-DP20001-6158.PDF
     
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  6. fuddy

    fuddy Member

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    Close it up, nothing to see here
     
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  7. elptxjc

    elptxjc Member

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    And with 2021 cars with no 'low' regen option, the car is pretty much a one-pedal golf kart now, so once people get used to not having to use a brake pedal, it'll be much harder to press the 'gas' pedal when braking means releasing it. I also agree it's 100% user error, whether they admit it or not. The telemetry doesn't lie.
     
  8. SDKoala

    SDKoala Model 3 LR RWD

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    I don't care if it's not how the car is "intended" to be driven and that it puts me in the minority of drivers--this is why I have the car in Creep and do not use Hold or Roll. Giving up one-pedal driving and the little extra efficiency is worth the trade off. I have a tight garage opening that I have to enter at a 90 degree angle and for me it's much safer and easier to feather the brake pedal than the accelerator when parking. If I do have a SUA event, I'm sure it'll be because my foot inadvertently slipped than the car lurching forward on its own.
     
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  9. elptxjc

    elptxjc Member

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    For those that can't master good throttle control, the 'creep' option is a good alternative for those situations :). I can make the car move an inch with the throttle (and in regular mode, not 'chill'), so it can be done that way; it's just a matter of getting used to it. It's good that Tesla left that option.
     
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  10. SDKoala

    SDKoala Model 3 LR RWD

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    I'm well-aware that the car responds to the lightest touch and people can maneuver their cars in the tightest of spots without being in Creep. I can do it too. According to informal polls here, something like 75% of people use Hold, so clearly it is the favored option.

    What I recognize is that I'm not infallible. I'm just trying to avoid the chance that one day, no matter how many times I have performed the same action and how good I think I am at it, there could be an inadvertent press of the accelerator that leads unnecessary damage to my car and/or my house, or god-forbid, a person. That's not worth the benefits in my opinion, which is why I'm in the minority and use Creep. I'm not trying to convince anyone that they should switch, just giving my reasoning for why I prefer it.
     
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  11. Mr X

    Mr X Future Martian

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  12. stopcrazypp

    stopcrazypp Well-Known Member

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    To be fair to OP and others responding, they have not have their logs examined yet to determine the cause. For example it could be other causes than pedal misapplication, sometimes it's not unintended acceleration, but unintended non-deceleration (expecting car to slow down but it doesn't), which feels similar (car feels like it is lurching forward), but could involve other elements (like TC, ABS, regen interacting). Example here on the Prius forums discussing this:
    Lurchingforward on braking over bump

    However, for instances of pedal misapplication, it is true most people that do that are 100% sure they did not.
     
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  13. KenC

    KenC Active Member

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    No doubt it takes some time to reprogram the brain and foot to feather the throttle.
    Yeah, that sensation or the car speeding up was a common complaint about the Volt's blended brakes, when you transitioned from the blended to friction. There's a transitory moment when you don't get regen, and the car seems to speed up, when actually it's just your perception of less deceleration.
     
  14. bobby g

    bobby g Member

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    Being one, I still agree.

    My thought is that, hopefully, when he made his appointment, Tesla did a log pull remotely and can check again that day. Not sure if that can be done but I would think so.
     
  15. Silicon Desert

    Silicon Desert Active Member

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    YES! and I am one of them, After this happened to me a couple times, I stopped using it. It's a dumb design. I couldn't believe it was trying to speed up to over 35 mph while I was doing a TIGHT right turn into our neighborhood and almost hit the sidewalk.
     
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  16. Sam1

    Sam1 Member

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    what I would assume happened is that Tesla reviewed the logs and instantly observed what happened. They told the customer what actually happened, then the customer refused to accept fault, and filed a complaint thinking that Tesla lied to them for some reason.
     
  17. Knightshade

    Knightshade Well-Known Member

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    As mentioned already- this is already fixed

    You can set TACC to put the set speed at whatever speed you're going when you turn it on, rather than what it thinks the current speed limit is.

    This change came last last year sometime in an update.
     
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  18. dmurphy

    dmurphy Woof.

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    I have the opposite problem. I’ve gotten completely spoiled by one-pedal driving. Anytime I have to drive a gas car, I need to be consciously applying the brakes. Thankfully, decades of muscle memory kick in but my kid’s going to grow up driving nothing but EVs. He won’t have that muscle memory to fall back on. Hopefully by then, rental fleets will have purged the gas cars.

    And yes ....

    3A062271-AD5A-449C-BBF2-0543F01CD116.jpeg
     
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  19. SDKoala

    SDKoala Model 3 LR RWD

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    Yep, even without pure one-pedal driving, I get that feeling when driving an ICE car that it's running away from me unless I'm riding the brake.
     
  20. KenC

    KenC Active Member

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    Yep. The weird thing is my younger bro, who lives nearby, always asks me to help him put in his boat; essentially, he wants me to drive his SUV to trailer his boat to the boat ramp, since he's not good at towing or backing up a trailer, or in this case a boat. He doesn't realize that I've been one-pedal driving for a couple years now, and it's totally weird for me to have to drive his SUV with boat!

    When my Cybertruck Triple comes, it'll be back to normal for me, but until then, I have to constantly remind myself to brake. It'd be far easier if it were a manual, then I could use engine braking like I used to do.

    Which reminds me, I wonder if those people who used to drive manuals have had an easier time adapting to regen, because of their experience with engine braking.
     
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